MTC SWAT Prismatic 12x50 Scope
SWAT | PRISMATIC 12 x 50
With its short eye relief, the SWAT Prismatic ‘sits back’ further than any other scope, leaving plenty of mounting rail to allow headache-free attachment of all kinds of Night Vision fittings. Its multi-faceted SCB2 crosshair can also be illuminated at the push of a button, and comes with brightness control to suit all lighting situations.
The field of view from its 50mm front lens is three times more than a conventional scope. Put another way: here we have a 12x magnification scope that has the same field of view as a ‘conventional’ scope dialled into just 4x power.
Just as amazing is the 12×50’s light-gathering credentials. It sucks in more light than any comparable 12x scope, making it a top choice for shooting in low-light situations.
Size-wise, the stacked prismatic lenses of the SWAT 12×50 means it measures up at just 156mm – significantly shorter than, say, MTC’s ever-popular Mamba model (at 370mm).
Complete with MTC’s magnetic flip cover and a cool new mount that features integral tilt adjustment to achieve close to optimum optical zero – before even dialling-in the scope’s turrets – the SWAT Prismatic is a scope that’s totally unlike any other available in the shooting optics world.
And that is the truth of it… SWAT Prismatic – brighter than your average scope.
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BAGGAGE X-RAY MACHINE
Baggage X-Ray Machine
Minimum Order Quantity: 1 Piece
|W660mm x H510mm
|17 inch LED
ZKX6550 X-ray inspection system increases the operator ability to identify potential threats; the device is designed to scan briefcases, carry-on baggage, small cargo parcels.
ZKX6550 uses reliable high quality dual energy X-ray generator. With the superb image algorithm, ZKX6550 could offer clear scanning image, which allows operators to identify potential threat items visually.
ZKX6550 has innovative biometric identify function for operators, improving the security of system and preventing operator from forgetting password.
With ergonomic modern design, ZKX6550 could help operators to identify suspicious items fast and accurately.


A special magnifier bundle put together by your friends at Canadian Coin News and Canadian Stamp News.
The bundle consists of three magnifiers in total. They include:
Hand-held 7X magnifier with LED (Sku # 344396):
Handy pocket magnifier with Perspex aspheric lens, powerful white LED, and 7x magnification at an affordable price – which is just right for many collectors. Lens diameter: 1 3/8″ (35 mm). Includes three batteries (AAA).
Overall size: 4 ¾x 1 3/8 x 1″ (120 x 42 x 26 mm).
Clip-on Magnifier (Sku # 326886):
A quality magnifier for reading glasses. Adjustable to fit all frames. Diameter of lens 1 1/4″ (30 mm). 5 x magnification. The flexible link allows for precise adjustment for frame and eye.
The popular “5 in 1” Pocket Magnifier (Sku # 339919):
Stainless steel frame with acrylic housing and 2 aspheric lens: rectangular, 1 1/8 x 1 1/2 (30 x 37 mm) with 2.5X, round, ½ (15 mm) diameter with10x magnification. 3 lighting functions: powerful 3-LED flash light (sideways), 1-LED research light (down), simple 395nm long-wave UV light (down). Also includes pull-out mini ball-point pen and leatherette case. 3 LR927 batteries incl. Dimensions: 1 ½ x 3 ½ x ¼ (38 x 91 x 8 mm).
Combined, these three magnifiers have a total retail value of $32.85, before taxes.
This special bundle offer, limited to only nine sets (while quantities last), is available for only $25.62 (20% off).


D – 99 Standard Test Method for Refractive Index and Refractive Dispersion of Hydrocarbon Liquids, hydrocarbons, refractive dispersion, refractive index. ASTM D(R07) – Designation: D – 02 (Reapproved ) An American National Standard. As well as adding a sample changer or special density cell for high pressures and temperatures, a DMA Generation M density meter from Anton Paar (Austria) .
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D — 02 Reapproved An American National Standard Standard Test Method for Refractive Index and Refractive Dispersion of Hydrocarbon Liquids1 This standard is issued under the xed designation D ; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon e indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. NOTE 1—The test method may be suitable for measuring the refractive indices of liquids above 1.
Verication of the accuracy of such measurements will depend upon the availability of reliable, certied reference standards that demonstrate the performance of the instrument used under the particular measuring conditions.
For convenience in calculations, the value of the difference thus obtained is usually multiplied by 10 It may also be dened as the sine of the angle of incidence divided by the sine of the angle of refraction, as light passes from air into the substance. This is the relative index of refraction. If absolute refractive index that is, referred to vacuum is desired, this value should be multiplied by the factor 1.
The numerical value of refractive index of liquids varies inversely with both wavelength and temperature. Summary of Test Method 4.
Refractive Index Measurements According to ASTM D1218
Liquid color should be limited to No. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Current edition approved Nov. Originally approved in Last previous edition approved in as D — Originally published as Lawrey, D. The instrument principle is based on the critical angle concept. Signicance and Use 5. However, this instrument is no longer manufactured. There is a variety of refractometers that have been found to be suitable for this measurement.
Some instruments offer a wider measuring range but it is important to verify the uniformity of accuracy across the entire measuring range and to ensure suitable calibration materials are available for this verication. Reagents and Materials 7. Vapors may satm ash re. If an external bath is used, the thermostating liquid shall pass the temperature measuring device on leaving, not on entering the prism.
The temperature control v1218 external or internal shall have the following control specication: Stability Uniformity Display Resolution 6 0. Warning—2,2,4trimethylpentane, methylcylcohexane, and toluene are all ammable. Their vapor can be harmful. The precision of the test method see For apparatus using nonmercury in glass thermometer, a platinum resistance probe, thermocouple, or equivalent temperature sensors are acceptable. NOTE 3—Measurement of refractive dispersion requires more than one type of light source.
The sample shall be free of suspended solids, water, or other materials that may settle onto the prism surface and affect the measured reading. Water can be removed from hydrocarbons by treatment with calcium chloride followed by ltering d12118 centrifuging to remove the desiccant.
The possibility wstm changing the aatm of the sample x1218 action of the drying agent, by selective adsorption on the lter, or by fractional evaporation, shall be considered. Warning—Volatile hydrocarbon samples are ammable. Preparation of Apparatus 9. Dust and oil can impair the optical component of the instrument. Thoroughly clean the prism faces with toluene, 2 6.
Filters can be used to eliminate unwanted lines borderlines. Do not dry the prism faces by rubbing with dry cotton. Turn on the light source and allow the refractometer to equilibrate for 30 min. NOTE 6—The constancy of the prism temperature can be seriously d12218 by variations in ambient conditions such as air drafts or changes in room temperature.
Reasonable precautions should be taken to minimize these factors. Determine the refractive index at the secondary wavelength following Satm 7—When determining refractive dispersion, it is expected that the instrument would astk been calibrated at both wavelengths used. Open the prism assembly.
Apply a drop of 1-bromonaphthalene contact liquid, about 1. Press the reference standard against the surface of the prism face with the polished end towards the light source. If the observed refractive index for the chosen reference material astmm a specied test temperature differs by more than 0. Check that the prism temperature is within 0. Close the prism assembly and lock if necessary.
Turn on the light source. Allow 3 min temperature equilibration time. Calculation and Report Report the calculated value and the test temperature, for example: Precision and Bias The instrument shall incorporate a solventresistant prism seal. The accuracy and resolution awtm the temperature measuring device shall be 0. Reagents and Materials Preparation of Apparatus Ensure that the instrument has a solvent resistant prism seal.
They may require a atm, two-point, or multi-point calibration. Ensure the prism temperature is correct and the instrument has been properly calibrated. Do not introduce an excessive amount because this can slow the thermal equilibration. Lower the sample presser if tted. Record or report, or both, this value as the refractive index of the sample at the test temperature. NOTE 8—From experience using the instrument, the user will be able to judge with a safe margin aatm amount of time needed for a sample to thermally equilibrate on the prism.
Based on this, it may be possible on some models to set an automatic delay time for readings. This enables a xed measuring time to be written in to the experimental protocol.
NOTE 9—When successive readings are drifting, the direction of drift will indicate what is happening to the sample. An upward drift means the sample is cooling on the d218 a downward drift means the sample is warming up. This is particularly noticeable when samples are much hotter or cooler than the prism.
This can be manually recorded or, if the refractometer is equipped with a computer interface, readings can be sent to a printer or to a computer. D — 02 Rautomatic 5 0. The relative change in refractive index with temperature temperature coefficient is different for each liquid under test. Hydrocarbon liquids have a higher temperature coefficient than water and aqueous solutions.
For hydrocarbon liquids, the coefficient will typically be in the range -3 3 to -5 3 Refractive index should, therefore, be measured using light of a single wavelength monochromatic light. Most measurements traditionally have been made at the sodium D line Other light sources include mercury, cadmium, helium, and hydrogen where lters are used with the refractometer to eliminate unwanted emission lines.
Different substances have varying degrees of refractive dispersion sometimes called dispersive power. Some instruments can utilize a white light source, but often these instruments are limited in accuracy because of sstm light source. High accuracy Abbe refractometers require a pure spectral light source such as a sodium arc lamp see 6.
The refractive index at this wavelength is denoted as nD.
The degree of impurity band width will cause a dispersion of the detected light from the sample. Instrument software can be used to compensate for and thus minimize this error source but it will nevertheless be a factor in determining the limiting accuracy of the instrument. The dispersion error will however differ according to the substance measured. This is why instrument manufacturers may specify the instrument accuracy as typically or better than in order to cover a broad application scope.
However, for practical purposes, because of the proximity of the lines, it is regarded as a single wavelength source and the average value of The optical system in a refractometer is subject to microscopic movement as materials expand and contract with uctuating ambient thermal conditions. This effect leads to calibration drift, which must be periodically corrected to ensure measurement reliability. Solid plates are often preferred for their stability shelf lifebut have the disadvantage of limited accuracy in use because of the errors associated with the placing of the plate on the refractometer prism.
Typically, a plate may not allow an accuracy better than Test plates are particularly difficult to apply to sapphire prisms of the type typically used in digital electronic refractometers. This is because the micro-roughness of sapphire is greater than that of softer optically atter glasses used in optical Abbe refractometers.
Invariably, liquid reference standards will be preferred and will be recommended by instrument manufacturers for this reason. Automatic digital refractometers may require a single zerotwo-point, or multi-point calibration.


A photo-transistor plus LED combination can be used for measuring light transmission and for sensing the timing of mechanical movements. The LED is powered by SQR1. The collector of the photo-transistor is connected to SEN, which is connected to 5 volts through a 5.1k resistor. The voltage at the collector of the photo transistor changes according to the amount of light falling on it. The built-in analog comparator on SEN input is used for timing measurements when the light crosses a certain threshold.


Now more and more people are starting to use special devices to detect hidden cameras and other devices. And today we will talk in more detail about such devices.
That is called a bug detector. They are able to identify many devices that can interfere or disturb you.
Hidden Camera Detector is a portable device that you can easily carry anywhere, such as an office, sauna, hotel, dressing room, etc. With this device, you will be sure that no one will follow you. If you use it correctly, it will detect any hidden camera, even a professionally installed one embedded in everyday objects like paintings, pens, etc.
Every hidden camera has a lens. The principle of operation of the device is to detect reflections reflected by the lenses of hidden cameras. The hidden camera detector emits a powerful red spectrum of light, and as soon as the emitted flux hits the camera lens, it will be reflected towards the camera detector lens, and you will see a specific flash that is difficult to confuse with anything else.
Now you know everything about the detectors that will protect you and will not allow you to penetrate into your personal life.


- Health Devices
- Braces & Supports
- Bathroom Safety
- Living Aids
- Physical Therapy
Ideal for seniors, hobbyists, professionals, and people with low vision or macular degeneration, a magnifying glass with a light can bring fine print and small visuals to life. From floor or table magnifying lamps to hand held magnifying glasses with a light, these products usually feature a variety of magnification levels. If you are struggling to read the small text on pill bottles or do close-up work such as stitching, any of these best flashlight magnifying glasses will help you stop straining your eyes.
This handheld magnifying glass with a light comes with two high-quality acrylic lenses—a 5x lens and a 10x lens. Simply press the two-button system to attach or release them. Plus, it features two integrated bright LED lights for reading in dark conditions, and an ergonomically-designed nonslip handle.
This bestselling head magnifier features three multi-coated acrylic lenses: a fixed 1.9x lens, a 1.9x flip lens, and a 4.5x loupe lens. It comes with a removable LED light with a pivoting tilt and angle. Plus, the head strap can be customized to make this device suitable for men, women, and children.
Ideal for reading books or pursuing hobbies such as stamp collecting, model building, and needlepoint, this desk lamp features a 5x spot lens with two in-built LED lights. The flexible neck lets users direct the beam of light exactly where they need it. This lamp comes with an AC/DC adapter.
This flashlight magnifying glass lets users alternate between three different lenses—2x, 3.5x, and 10x for examining very fine details. It features two integrated energy-efficient LED lights, which run on three AAA batteries, and comes with a convenient storage bag and a lens cleaning cloth.
Billing itself as the widest magnifying lamp on the market, this appliance features an elongated five-diopter lens for a 2.25x magnification. The 60 miniature LED lights embedded around the lens produce a cool white hue without generating heat. Plus, this lamp can be placed on a desk or the floor thanks to a removable metal pole extension.
This compact hand held magnifying glass with a light packs a lot of punch. Featuring 3x and 15x magnification areas, it can be used to do stitch work or read fine print. The easy-to-grip handle is comfortable and will not cause muscle fatigue, even after prolonged use. Plus, the three integrated LED lights make reading in low light a breeze.
Designed for those with vision problems, this magnifying lamp features a 2.25x lens and an aluminum clamp that can be easily attached to desks or other pieces of furniture. The triple-joint arm swivels 360 degrees to let you aim the light where it is required. Plus, according to the manufacturer, the in-built LED light will last over 20 years.
Ideal for seniors, children and those with a vision impairment, this stylish hand held magnifying glass with a light has a five-inch-wide frame, and a classic black and silver design. It features an ergonomically-designed handle, a 2x magnifying lens with 6x bifocal, and a bright LED light.
This bestselling flashlight magnifying glass features a solid and smooth frame, and a crystal glass lens that does not distort text. It has two magnification levels—3x for people with low vision or macular degeneration and 45x for reading extremely fine print. Plus, the three energy-efficient LED lights, which are located on the handle, are ideal for illuminating fine print.
Billing itself as the biggest hand held magnifying glass on the market, this 5.5-inch scratch-resistant reading device features a distortion-free lens with a 2x, 4x, and 10x magnification levels. The three in-built LED lights are energy-efficient, and can be switched on and off at a push of a button.
While magnifying glasses with a light are ideal for illuminating small text and intricate images, here are a number of other products for those with weak eyesight.
Keeping on top of your vital signs is important to monitoring your overall health. From digital bathroom scales to body fat scales, the best measuring scales not only provide accurate readings, but are sturdy and easy to operate. If you suffer from low vision, select a scale with an easy-to-read backlit LCD display.
Ideal for late night strolls, a cane with an in-built light will help you navigate around any potential obstacles. Usually positioned on the handle, most cane lights can be adjusted up and down, and from side to side. Choose a quality cane if you tend to travel a lot and require minimal support, or a cane with a wide base and four tips if you are more unsteady on your feet.
Whether you are looking for an oral thermometer, a forehead thermometer, or an ear thermometer, a large display is essential if you suffer from poor vision. Luckily, many thermometers on the market today feature easy-to-read backlit displays that not only show temperature in both Fahrenheit and Celsius, but also feature a fever and a low battery alert.
A popular choice for the visually impaired, magnifying glasses with an in-built light are ideal for reading in dark areas. Most magnifying glasses feature energy-efficient LED lights, which run on standard batteries. Select a budget-friendly hand held magnifying glass with a light, or opt for a floor or table magnifying lamp. Many flashlight magnifying glasses also feature different levels of magnification. Check out our list of the best magnifying glasses with a light, and get on with the activities you love the most, no matter the lighting conditions.
Do you suffer from fatigue, lethargy, daytime sleepiness, or decreased vision? Then you might need energy supplements for seniors to boost your mood and energy levels. These supplements are rich in essential vitamins and minerals, that support the immune system, increase mental clarity, promote healthy joints, enhance vision, and enable you to carry out your daily activities with ease.
While gyms can be a great place to exercise and build muscle, rainy days and general lethargy can quickly put an end to a gym trip. If you want to bring a little bit of the gym into your home, there’s a wide selection of hand weights for home use you can choose from.
Digestive enzymes supplements include proteins that support the breakdown and absorption of nutrients in the body. Your body produces an amount of these enzymes itself, and the best enzyme tablets promote healthy digestion naturally. These chemicals are linked to a range of health benefits, such as reducing bloating and gas, improving conditions like constipation and helping the body absorb the maximum nutrient value of different foods.
An underactive thyroid gland can cause fatigue, slow metabolism, and weight gain. While a lifestyle change is required, using supplements for hypothyroidism is recommended to stimulate the production of the thyroid hormone. These supplements are formulated with essential vitamins, minerals, herbs, and amino acids to enhance metabolism as well as increase energy levels.


(USA) +1 (855) 4-VIALITE
(UK) +44 (0)1793 784389
2005 - OEM module format now available for all PPM fiber optic links
New to PPM's extensive RF-over-fiber ViaLite range are the OEM Transmitter and Receiver modules. These small, high-performance modules have been designed for manufacturers who wish to add a fiber optic interface to their existing RF product. They have generated much interest from suppliers of satellite up/down-converters, mobile radio equipment, cellular and many others.
.The OEM modules are available for a wide range of operating frequencies from <2kHz to >3GHz including: L-band; 70/140MHz and GPS. PPM's RF over fiber products offer a very wide dynamic range, and allow the transmission of RF signals of any modulation format on optical fibre over distances from a few metres to >50km with very low loss and signal degradation. All of PPM's ViaLite modules require little or no previous knowledge of optical fibre for product selection, installation and use.
Tel: +44 (0)1793 784389
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A typical non-dispersive infrared (NDIR) detector passes a source of infrared energy through the sample and measures the energy received by one of two detectors. The active detector responds to wavelengths in the same band as the sample gas, while the other detector measures a reference to compensate for changes within the instrument. When specific combustible gases are present, they absorb some of the infrared energy and produce a signal in the active detector relative to the reference detector. Energy absorbed by the combustible gas for a given wavelength varies exponentially with the particular gas's absorptivity, the concentration, and the path length. This means that infrared detectors must be specifically calibrated for a particular gas, and can have very high variations in response factors and linearity for other gases. Infrared detectors are usually limited to detecting a single combustible gas.
Control Instruments infrared detector uses an integrated sampling system that extracts a sample from the process using a built-in aspirator that develops suction from compressed air. Infrared energy is passed through the sample, and the amount of infrared energy that is absorbed determines the concentration of solvent vapors. Multiple infrared detectors at select wavelengths help convert concentration data into % LFL flammability readings with greater accuracy for a wider range of solvent types.


UV CAP HOOD CPL FLD ND Graduated Lens FilterType UV Size 82mm in Camera Filters from Consumer Electronics
Quantity: 1 UV filters reduce haze and improve contrast by minimizing the amount of ultraviolet (UV) light entering the camera lens. Especially useful in areas of high altitude or snowy regions. Serves as a great and inexpensive lens protector. Use consistently to protect your delicate lens from dirt, scratches, and other forms of damage. A must have accessory for every photographer's kit! Double Threaded Size:82mm Material: optical glass + metal Package Included: 1 x UV Filter 1 x Case Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
UV CAP HOOD CPL FLD ND Graduated LE Ns Filter Flower ... - Vova
UV CAP HOOD CPL FLD ND Graduated LE Ns Filter Flower Hood 67mm. US$
2.64. Color: Black. Black. Size: 67mm. 67mm. ADD TO CART OUT OF STOCK.


Wednesday, 4 February 2009
Fujifilm Launch Medium Format Film Camera
It cheered me up to see that Fujifilm are launching a new medium format film camera this spring. We are not sure when it will sell in the UK as yet.
First shown as a prototype at the Photokina trade show in Cologne last year, the GF670 Professional will now be released in Japan in mid-March as a portable folding bellows camera, jointly developed by Fujifilm and Cosina. The production may be limited to just 5000 units.
Its most unusual feature is a mechanism for switching between two different film formats - 6x7cm and 6x6cm. It is also fitted with an 80mm f/3.5 fixed focal length lens, which is composed of six glass elements in four groups. The GF670 has an automatic lens shutter, and an SPD sensor with both automatic and manual autofocus. The ISO sensitivity ranges from 25 to 3200.


The precise knowledge of the point spread function is central for any imaging system characterization. In fluorescence microscopy, point spread function (PSF) determination has become a common and obligatory task for each new experimental device, mainly due to its strong dependence on acquisition conditions. During the last decade, algorithms have been developed for the precise calculation of the PSF, which fit model parameters that describe image formation on the microscope to experimental data. In order to contribute to this subject, a comparative study of three parameter estimation methods is reported, namely: I-divergence minimization (MIDIV), maximum likelihood (ML) and non-linear least square (LSQR). They were applied to the estimation of the point source position on the optical axis, using a physical model. Methods’ performance was evaluated under different conditions and noise levels using synthetic images and considering success percentage, iteration number, computation time, accuracy and precision. The main results showed that the axial position estimation requires a high SNR to achieve an acceptable success level and higher still to be close to the estimation error lower bound. ML achieved a higher success percentage at lower SNR compared to MIDIV and LSQR with an intrinsic noise source. Only the ML and MIDIV methods achieved the error lower bound, but only with data belonging to the optical axis and high SNR. Extrinsic noise sources worsened the success percentage, but no difference was found between noise sources for the same method for all methods studied.
- Project type: Investigation


This unit is an integrated, calibrated optical channel with a built in OC 192/STM 64 filter that can be switched in for a standards base transmitter compliance test.
When the filter is switched out, the 86106B offers 28GHz of unfiltered optical bandwidth for accurate characterization of high speed lasers.
The frequency response variation of the unfiltered optical channel also has been improved to minimize the distortion on measured optical pulses.
A 40GHz electrical channel is available for wide bandwidth measurements on electrical waveforms.
Reference receiver capability
Characteristic RMS Noise
Wavelength range: 1000 to 1600nm
Characteristic RMS noise: 10uW to 18uW
Maximum average input power: 2mW
© 2024 Alliance Test Equipment, All Rights Reserved.
Alliance Test is not affiliated with Agilent Technologies or any other OEM manufacturer and all trademarks are owned by their respective manufacturers


EASYHIT Fibre Optic Shotgun Bead
The EASYHIT Fibre Optic Shotgun Sight.
This is the long (131mm) model. The most effective for gathering maximum light.
Available in red or green, 3mm diameter bead.
- Easyhit is a luminous bead suitable for all lighting conditions.
- Manufactured using the best optic fibres
- Gains in speed and accuracy
- Improve your shot due to an improved simultaneous view of the target and the luminous point
- Allows aiming with both eyes open: the luminous point indicates the firing axis
- Perfect for beginners or experienced shooters, allowing constant concentration while shooting
- Helps to correct problems with eye dominance
- Significantly better in weak light, dark background or a back ground with little contrast
- Simple attachment using an adhesive strip
- No adjustment, your aiming height remains unchanged
- Full instructions included
- Your original bead can remain in place, the Easyhit will fit behind your original bead


The market for luminaries is very complicated because there are many manufacturers and suppliers with different technologies. Acquiring a luminary is not difficult but when we decide to do it we have to look for the best option in terms of price, quality, performance, durability, and warranty.
Currently, we can choose the luminary with the technology that we want although the LED (light emitting diode) technology is preferred since it is developed up to this moment.
LED lamps with their high-quality electronic components and their designs in keeping with modernity, have a superior performance, their efficiency is higher compared to the older technologies, and their energy consumption is much lower. They can also replace traditional lamps. Tube Light with ultra bright LED chips serves as direct replacement of fluorescent tubes.
LED technology is today a state-of-the-art technology, so it is intended to replace traditional lamps (incandescent or fluorescent) with LED lamps. This replacement is due to the increased power consumption of traditional lamps, which causes LEDs to be preferred as their power consumption is half that of traditional lamps.
The LED technology is forming and will form a fundamental part of the lighting in our homes and buildings, since with the development of the technology the automation of the buildings is inevitable. It should be mentioned that there is a new development in the field of lighting such as luminaries produced from carbon nanotubes.
In addition, LED and OLED technologies are used in televisions so that the images are clearer and its design has less volume; in traffic lights, avoiding them more power consumption and making them more visible and durable than traditional traffic lights.
LEDs have also been used in applications in extraterrestrial space, as well as for artistic designs and facades of skyscrapers. The reflection of the growth of the use of this technology is in the manufacturing capacity; the creation of new jobs. This demonstrates that LED technology can lead the market for solid state lighting.


|Place of Origin:||Guangdong, China||Brand Name:||SEEYEYE|
|Model Number:||Magic||Lenses name:||Magic blue、Magic gray、Magic Hazel、Magic chestnut、Magic moss、Magic gem、Magic sugar|
|Using Cycle Periods:||Yearly /Monthly||Lenses Hardness:||Soft|
|Center Thickness:||0.08mm||Base curve:||8.6 mm|
|Power:||-0.00||Selling Units:||Single item|
|Made in:||Guangdong, China||Tone:||2 tones|
|Packaging Details:||PP||Expiry date:||5 years|
|Single package size:||7*8*1.2cm||Single gross weight:||0.019 kg|
1. CE and FDA certified materials
All contact lenses are CE marked and approved by the FDA, complying with international quality medical standards.
2. "Sandwich" lens technology
The "sandwich" lens technology puts the colored layer in the middle of the two layers of contact lenses to prevent the color from polluting the eyeballs and safely protect the eyes.
3. High-quality lens material
The lens is made of HEMA+NVP material, which minimizes the adhesion of ocular proteins to the lens, thereby reducing the sensation of foreign bodies in the eye.
1.Do your lenses come with prescription?
Yes! All of them are available with prescription. If you have normal eyesight or you simply need a decoration. choose -0.00.
Consult your eye doctor to confirm the diopter counts before ordering.
2.Why is the actual color different from that on website?
Due to variable factors. such as light. camera lens filters. surrounding colors. original eye color/ eye shape/ makeup. etc. the color of the lenses may vary and look different. Such cases should be acceptable.
Please contact us within 24 hours after you have received your lenses if you have any doubt about your lenses. Please don’t forget to enclose the lens picture so that we can check for you.


Fiber Optic Cabling Business Phone Systems
Corpus Christi Business Phone Systems: Transformative Fiber-Optic Cabling Solutions
In the landscape of data transfer, the adoption of fiber-optic cabling emerges as a pivotal advancement, revolutionizing communication with unparalleled speed, expansive bandwidth, and remarkable long-distance transmission capabilities. Businesses are swiftly integrating this transformative technology to meet the escalating demand for swift and reliable communication, gaining a competitive advantage in the process. The high-speed transmission and broad bandwidth of fiber-optic cabling effortlessly support bandwidth-intensive applications, including video conferencing and cloud computing. Its versatility extends across various sectors, such as healthcare, telecommunications, and networking. Whether establishing a new communication network or upgrading existing infrastructure, opting for fiber-optic cabling is a strategic decision, ensuring lasting advantages for your business. With our unwavering commitment to cutting-edge solutions, Corpus Christi Business Phone Systems prioritizes the deployment of fiber-optic technology to keep your business at the forefront of speed, reliability, and efficiency in today’s fast-paced world.
Single-Mode Fiber Optic Cabling (100BaseBX Standard):
Representing a high-performance solution for data transmission, single-mode fiber optic cabling adheres to the 100BaseBX standard. This standard is characterized by a single strand of optical fiber, facilitating the transmission of a single mode of light. This focused approach minimizes signal dispersion, enabling longer-distance communication with enhanced speed and reliability. The 100BaseBX standard, denoting a Fast Ethernet transmission rate of 100 Mbps, makes single-mode fiber optic cabling ideal for scenarios requiring high bandwidth over extended distances, such as long-distance telecommunications, data centers, and enterprise networks. Its efficiency in transmitting data over extended ranges positions it as the preferred choice for businesses seeking robust and dependable connectivity.
Two industry standards for Fiber Optic Cabling
Multimode Fiber Optic Cabling (100BaseSX Standard):
Compliant with the 100BaseSX standard, multimode fiber optic cabling is designed to meet the demands of high-speed data transmission within relatively shorter distances. Unlike single-mode fiber, multimode fiber accommodates multiple modes of light, allowing for the simultaneous transmission of signals along different paths. The 100BaseSX standard, signifying a Fast Ethernet transmission rate of 100 Mbps, makes multimode fiber optic cabling well-suited for applications where high bandwidth is required within a confined space. This includes local area networks (LANs), campus networks, and shorter-distance connections within buildings. Its cost-effectiveness and versatility in supporting various communication needs make multimode fiber optic cabling a practical choice for businesses seeking efficient and economical connectivity solutions.
In choosing Corpus Christi Business Phone Systems as your provider, you opt for a partner committed to delivering cutting-edge fiber-optic cabling solutions, ensuring your business remains ahead in terms of speed, reliability, and overall efficiency.
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Widespread assortment of HPSV Lamps are being provided by us in the international market. They produce light at a distinctive wavelength of 589 nm approximately by utilizing sodium in an excited state. These lamps are installed in industries as well as commercial places such as runways, airports, parks and many other places. They can be availed in different specification to cope with the needs of users. The High Pressure Sodium vapor lamps are mainly used for indoor lighting and give yellow light. They produce broad spectrum of light that help in providing a proper view at night.


The T15 sensor for the GapGun Pro2 is now available. This is a super high resolution sensor that is designed for feature sizes between 0.1 and 5mm.Because of its high resolution over a relatively shorter laser line compared to the T60 sensor, the new T15 sensor is especially capable of measuring scratches, defects, fasteners, chamfers, profiles, turbine parts, very small gap & flush and small radii.
The T15 sensor is available as V and M series. The violet laser is capable of measuring on a wide variety of materials, just like the T60 sensor. The M series sensor has a specialised filter for improved performance while measuring bright machined metal, turbine components, bright chrome and other highly reflective surfaces.


The Fisheye lens is a 10MM multi-coated lens that gives you 5x more field of view. Ideal for capturing mega-landscapes, closed interior spaces and more. Fisheye Lens Edition comes with the world's thinnest lens case mount along with a clip mount if you wish to use your own case or have no case at all.
WHAT'S IN THE BOX?
- Fisheye Lens - iPhone XR Lens Case - Clip-on Mount - Lens Cap + Pouch
Quite a large part of the outer parts of the photos are not sharp. This is not as good optically as your telephoto lens, which I also have. Otherwise it good. A bayonet might be easier to mount than a screw fitting.


Machine vision technology is becoming a requisite for many manufacturers because it can be used to improve quality while also providing automation. Vision systems are approximately defined as computers equipped with the sensors and facilities needed to first identify, then examine, then communicate vital information with high accuracy and precision. Errors in the manufacturing process are immediately detected, allowing necessary modifications to be done quickly and efficiently. This means that a vision system identifies, examines, and communicates critical information all at once, and provides for consistent quality in manufacturing products. As such, they are widely prevalent in many fields, including the automotive, semiconductor and electronics industries. My project will consider them mainly in their use in plastic fabrication and injection molding, specifically with respect to the inspection of battery seals at MicroTech Southwest. I will focus on the utility, efficacy, and efficiency of this technology in manufacturing fields, as well as the comparative advantage of machine vision technology over other methods or technologies.


The technologies of QMTWheeltest-Vision
The optical assembly is digital, it allows the acquisition of the image flow with a high resolution and a high speed. The lens is telecentric to ensure optimum optical accuracy.
This optical technology allows the removal of optical defects from
magnification, errors of perspective and distortion.
1.3 MPixels camera (1'300 x 1'000 pixels) at 30 frames / second
This light only allows you to view and measure the outline of the room.
Rotation of the workpiece for dynamic measurement. With the 5 positions, all the components can be controlled: mobile, boards, gables, ...
The applications of QMTWheeltest-Vision
The QMTWheeltest-Vision with Wheeltest 1, 3 or 5 positions allows the component to rotate with a constant speed. The optical system can thus make the dynamic measurement to calculate the axial and radial beats as well as possible splits. The Wheeltest 5 offers a clearance at the ends of the pivots in order to be able to measure on these areas.
The QMTWheeltest-Vision with the Wheeltest 2 or 4 positions allows the rotation of the board with a constant speed. The optical system can thus make the dynamic measurement to calculate the axial and radial beats.
The software allows the measurement of toleranced components in GPS.
The software has been completely developed by Qualimatest. It has an intuitive user interface and measures all features automatically.
Fit for you program (F4Y)
Qualimatest products can be customized from both an equipment and software point of view. The first level of software customization is the addition of additional functions ( full list of functions ) or the development of a custom function. It is also possible to customize the equipment for example by changing the field of vision or by adding an incident light.
On the basis of Qualimatest products, it is proposed the realization of product labeled on behalf of our customers who can be private or marketed by themselves
|Fields of view [mm]||9.1 x 6.8||According to specifications|
|Precision [μm]||2||According to specifications|
|Time for a measurement||<5 seconds (single pieces)||According to specifications|
|Binocular||When setting up the component||According to specifications|
|Lighting||Diascopic and episcopic (setting up the component)||According to specifications|
|Measurement software||QMTWheeltest-Vision||According to specifications|
|Focus (z axis)||manual||According to specifications|
|Component training||VOH Wheeltest 1, 2, 3, 4 and 5 training systems (optional)||According to specifications|
|data processing||External PC in Windows 10||According to specifications|
| Dimensions (H x W x D) [mm] |
|420 x 330 x 335||According to specifications|
Automated machines for 100% quality control


Axiocam Family Camera Technology from ZEISS In contrast to digital cameras for photography or industrial inspection, many aspects of the microscope cameras are optimized to meet specific requirements of applications in science, research and documentation.
As each application has very specific requirements, there is a wide range of different digital camera models to choose from. Different pixel sizes, for example, regulate camera sensitivity and spatial resolution. Lower pixel count enables higher frame rates and larger sensors offer better coverage of the field of view.
For maximum image quality, some Axiocam cameras feature low-noise electronic designs with cooled image sensors. Our color cameras excel through the best color rendition with a very high range of resolvable intensity levels. Monochrome cameras are the best choice for imaging of fluorescent samples at low light intensities with an extended sensitivity spectrum.
For easy documentation, some digital cameras can record images either completely without a computer, or through a connected PC, laptop or iPad running the ZEISS Labscope software. All our microscope cameras are fully supported in our ZEN software environment, offering fast live image display and easy-to-use user interface.
|Small, No-Frills Microscope Camera With its compact design, it makes quick and efficient work of your daily documentation needs. Experience a high data transfer rate with the USB 3.0 port for processing high-resolution 5-megapixel color images. Offering an exposure time range of 100 μs to 2 s and a live frame rate of up to 33 images per second, the camera allows you to be well prepared to cover multiple tasks. Document your results quickly and conveniently. With its attractive price-performance ratio, you can also expand the capability of your fluorescence imaging system with color imaging. Axiocam 105 color is ideal as a secondary camera on fluorescence microscopes that are traditionally equipped with monochrome cameras. The camera’s small form factor also lends itself well to environments with limited space.
|Axiocam 202 mono
|For Routine Fluorescence Documentation With smart microscopy, digital documentation has never been easier. Axiocam 202 mono is your smart 2 megapixel microscope camera for digital documentation of fluorescent samples.
|Axiocam 208 Color
|For Smart Digital Documentation With smart microscopy, digital documentation of your samples has never been easier. Axiocam 208 color is your 8 Megapixel color microscope camera for Smart Microscopy. This CMOS camera is suitable for education, fast digital documentation and all your routine applications.
|Axiocam 305 mono/color
|ZEISS Axiocam 305 Your Fast 5 Megapixel Microscope Camera for Routine Fluorescence Applications Enjoy High Resolution Imaging at Fast Speeds Axiocam 305 is a 5 megapixel CMOS microscope camera. You acquire images with various high contrasts and intensities thanks to its high dynamic range. The dark homogenous background helps you see even the finest structural details. And it's a really fast camera, acquiring up to 36 frames per second at full resolution.
|Axiocam 503 mono/color
|ZEISS Axiocam 503 color Image Large Sample Areas - Fast, in True Color, and High-Resolution Your 3 Megapixel Microscope Camera For Fast Image Acquisition in Research Labs This fast 2.8 megapixel scientific grade color camera allows high resolution live images and time-lapse recordings at video speed. Axiocam 503 color brings the convenience of fast color HDTV cameras to the digital domain, including all the advantages of extended parameter control and the image quality you expect from scientific camera products.
|Axiocam 506 mono/color
|ZEISS Axiocam 506 color 6 Megapixel Microscope Camera for Fast Imaging in True Color High-Resolution Images of Large Sample Areas This high quality 6 megapixel color camera offers you an amazingly fast live image and acquisition speed despite its large pixel count and the very large 16 mm diagonal field of view. This makes it the camera of choice whenever large sample areas have to be screened and recorded by taking many image tiles repeatedly in a minimum amount of time due to reduced number of tile positions.
|Axiocam 512 mono/color
|ZEISS Axiocam 512 color Acquire Large Object Fields with Low Magnification and High Aperture Objectives without Stitching Your 12 Megapixel Microscope Camera Fast, in True Color, and High Resolution This 12 megapixel scientific grade color camera has a 1” (16 mm diagonal) CCD sensor. Given its large sensor size combined with small pixel sizes, you are able to acquire large object fields with low magnification and high aperture objectives without stitching. You can zoom into the digital image and still see the finest details of your sample. The USB 3.0 interface delivers an excellent live image at high acquisition speeds.
|Axiocam 705 mono/color
|ZEISS Axiocam 705 color Your Fast 5 Megapixel Microscope Camera True Color Imaging in High Resolution Axiocam 705 color is your flexible 5 megapixel color camera for demanding microscopy applications. Its sensor strikes the perfect balance of speed and resolution. Delivering more than 60 frames per second at full 5 megapixel resolution, this microscope camera will capture even the most dynamic processes without compromising the image resolution. Subsampling or sub-region readout accelerates your acquisition speed to hundreds of frames per second.
|Axiocam 712 mono/color
|ZEISS Axiocam 712 color Your All-round 12 Megapixel Microscope Camera True Color Acquisition of Large Specimen Areas in High Resolution Your Axiocam 712 color combines a large image sensor, small pixel size, precise color rendition and fast imaging speed in one versatile and flexible color microscope camera. You profit from a 12 megapixel color CMOS sensor which delivers more than 20 frames per second in a large field of view. You can now acquire large specimen regions quickly and with uncompromised image quality.


Bright lights and glare can cause discomfort, distraction, and vision fatigue.
You Need This !
Car Visor Glare Protector
Car Visor Glare Protector provide clear glare filter catches the messy light from all sides and filters them out reflecting through the lens allowing you to clearly see the road ahead.
Car Visor Glare Protector is designed with multi protection layers - scratch resistant, UV400, corrosion resistant, and PC lens to protect you while also providing you with more comfortable vision.
Car Visor Glare Protector offering 24 hour protection the day-night protect visor filters headlights and bright street lights during the night, while also effectively blocking UV rays and filtering glare and sunlight during the day.
- Weight( Approx.) :305g
- Material: PC, PMMA
- Color: Yellow, Transparent gray
- Use: Daytime and Night
- Size:12.5" x 4.7"


The new Ranger camera system is being used to film Stranger Things
Red Digital Cinema has released their new Ranger camera system, now being used on the locally filmed Netflix show Stranger Things. The show may look like it is in the 1980’s, but they are using the newest and best technology available on the market. Available now to authorized rental houses, the new camera system has excited camera crews throughout the industry.
The RCS is a high end all in one camera that is well suited for studio configurations. It boasts great temperature management, an ability to handle heavyy duty power sources and more. The RCS “includes the benefits of Red’s cinematic full frame 8K sensor, MONSTRO, in an all-in-one camera system that includes three SDI outputs (two mirrored and one independent) allowing two different looks to be output simultaneously; wide-input voltage (11.5V to 32V); 24V and 12V power outs (two of each); one 12V P-Tap port; integrated 5-pin XLR stereo audio input (Line/Mic/+48V Selectable); as well as genlock, timecode, USB and control.”
To learn more about the new camera system filming this fan favorite show, please click here.


LASER CUTTING SERVICE
Using our laser machine we are able to shape all types of plastic and other materials with super fine, precision cutting. From single items to larger productions, we are able to help.
Oculus 1525 Flatbed Laser
The Oculus 1525 Flatbed laser is our medium flatbed laser machine and is ideal for those looking to run larger processes. With a 1500 x 2500mm bed, this highly adaptable CO2 laser machine makes light work of cutting large sheets of material, such as Acrylic, MDF, plywood and soft wood, with speed. From sign-makers, to exhibition stand builders, to packaging manufacturers, the list of users who could benefit from the high precision Oculus 1525 Flatbed laser is endless.
Events & Exhibition Stands
& Many More..


Best Shooting Glasses UK
SR shooting glasses are the latest in competitive shooting sports protection from Napier UK. Designed by shooters, the SR allows for a full 180 field of view maximising performance and comfort. Complete with 5 interchangeable lens to suit all lighting conditions. The new Napier Ricochet lens is optically correct and made from the highest quality polycarbonate to offer unrivalled protection.
Shooting Glasses UK
Ricochet lens colour guide: What Colour Shooting glasses for sporting clays?
Grey: Good for the highest light level conditions, this lens reduces eye fatigue, provides accurate colour perception, and minimizes glare.
Vermillion: Ideal for low lighting and enhancing orange clays. This lens improves visual depth, reduces eye strain, enhances visibility, and offers the most significant amount of contrast.
Sodium: Ideal for fog, haze, and extreme weather conditions, this lens filters out blue light.
Bronze: Good for general use and everyday conditions, this lens enhances contrast and contains a red element to improve depth perception.
Lilac: Good for low light levels and impact protection without colour change.
Removing & changing lens.
How to keep Shooting Glasses from fogging up?
Glasses can sometimes fog up because of condensation from your breath or sweat; there's not much you can do to prevent it, particularly if you are wearing a mask. Ultra Soft micro filament gun cleaning cloth is an extra soft non-scratch fibre ideal for cleaning barrels, action, stocks, and optics. Keep one of these tucked in your pocket so if your glasses do fog up, you have a quick, safe and convenient way to restore them in the field.


Apple filed in 2009 an interesting patent called “Systems and methods for receiving infrared data with a camera designed to detect images based on visible light.” In a nutshell, the camera captures a picture or a video, attempts to detect the presence of an infrared signal. If present the camera decodes the payloads and acts correspondingly. This is what claim 1 protects.
Claim 1. A method for using a camera, comprising: using the camera to detect an image based on at least visible light; determining whether the image includes an infrared signal with encoded data; in response to determining that the image includes an infrared signal with encoded data, routing at least a portion of the image to circuitry operative to decode the encoded data in the infrared signal; and in response to determining that the image does not include an infrared signal with encoded data, routing the image to a display operative to display the image.
The obvious application is to block the capture, or decrease the quality, in presence of such signal. For instance, a movie theater (or a classified facility) could beam such infra-red signal. The compliant camera/phone would then block the capture. The claims 4-7 clearly highlight this feature.
4. The method of claim 1, further comprising: decoding the encoded data in the infrared signal; and modifying a device operation based at least on the decoded data.
5. The method of claim 4, wherein modifying a device operation comprises applying a watermark to a detected image.
6. The method of claim 4, wherein modifying a device operation comprises disabling a device function.
7. The method of claim 6, wherein the device function is a record function.
Another usage, which is not related to content protection, is that the payload is analysed by an application that may display specific information on the screen. The typical example would be a museum which would provide an application. Each room or specific item would beam a code, the application would use this code to ask a server contextual information to display. Obviously, if you would combine captured video + contextual display, you have an augmented reality device :Happy:
8. The method of claim 1, further comprising: decoding the encoded data in the infrared signal; displaying information on the display based at least on the decoded data.
Potential applications are numerous as described in subsequent claims.
Is this the solution against camcorders in theaters? I don’t think so. According to me, there are at least two issues:
- It requires the camera to be equipped with the system. Unless all manufacturers of cameras would adopt it, which is highly unlikely, there will be models without this system. Pirates will use these ones.
- Infra-red can be filtered by correctly tuned IR filters. Soon the pirates would find the frequency of IR, and use the corresponding filter. This is why IR jamming in theater did not work. Some companies tried to blast IR beams towards the audience to blind cameras. It was not a success.
The patent is available at http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=”20110128384″.PGNR.&OS=DN/20110128384&RS=DN/20110128384


Eye Surgical treatment has actually come to be a mainstream method of vision correction, and this post will certainly discuss the benefits and disadvantages of three different techniques being provided to the medical consumer.
Lasik Eye Surgical procedure
LASIK is the acronym for Laser-Assisted In Situ Keratomileusis and also is an eye medical system which completely fixes vision by removing a thin layer of the cornea. This treatment works best on clients with moderate to high levels of myopia (nearsightedness), low to modest degrees of hyperopia (farsightedness) and also astigmatism associated with myopia, and who have thick corneas. It is one of the most popular surgical vision adjustment technique.
People with regular eye sight see objects clearly since pictures are brought into a right focal point by the cornea and lens of the eye. Ideally, the cornea's curvature is uniformly matched to its size in a regular eye. People with astigmatism, nearsightedness or hyperopia have off-and-on formed corneas, so the items seen are not concentrated properly. LASIK adjustments corneal shape by precise removal of corneal cells, as well as by doing so corrects the eyes' concentrating power.
There are, nevertheless, risks to LASIK eye surgical procedure.
There is a remote possibility of total loss of vision. If this happens, it is usually since the individual had a pre-existing condition which ought to have averted the surgical procedure in the first place, such as pregnancy, cataracts, joint inflammation, diabetic issues, glaucoma, or lupus. People with big pupils are additionally bad candidates for LASIK. Dry eye syndrome will be aggravated by this procedure.
A couple of clients complain that they completely see "ghost" images, have blurred vision, diminished contrast as well as negative night vision. When LASIK wased initially introduced, 5% of patients had post-operative problems; nevertheless, improvements in the treatment have caused this rate to drop to less compared to 1% if LASIK is executed by proficient professionals as well as individuals are effectively evaluated before surgical procedure. If issues do happen, they can frequently be resoved by a retreatment.
FDA has actually authorized LASIK laser eye surgical treatment given that 1998. While there are a great deal of pleased patients, there are however no long-term research studies regarding its results. Recognize the limitations and also the dangers of LASIK eye surgical treatment before you sigh up for the procedure.
Though much less well known, these tiny implants could improve vision in individuals with moderate to moderate nearsightedness without the threat of long-term eye damages intrinsic in the tissue elimination technique of LASIK. Intacs are semi-circular disks dental implanted in the cornea which stretch it to assume a flatter shape. Though somewhat much less accurate than LASIK, they are removeable and also changeable, so if the individual has an unexpected over- or under-correction, the dental implant could be removed as well as an additional of a various dimension placed to obtain the preferred correction. The implants are located at the edge of the cornea, so the central visual area is totally intact as well as undamaged, and the toughness of the cornea is undiminished, making it a much better alternative for pilots as well as those who participate in call sports where eye injury is an opportunity.
Intacs disagree for severe nearsightedness and also greater than small astigmatism (1.00 diopters), as the cornea can only be stretched up until now. If the Intacs are gotten rid of, vision returns to its preoperative level. Besides vision adjustment, Intacs are also made use of to treat keratoconus.
Intacs are FDA approved as well as Ten Years researches have actually exposed no significant issues with Intacs and very few client problems; however, due to the fact that the procedure takes much more training compared to LASIK, there are less eye surgical procedure clinics providing it. Nevertheless, the Intacs internet site offers a listing of experts in each check these guys out state, as well a few in Canada, Europe as well as Mexico.
Due to the fact that lots of people do not wish to run the risk of LASIK as well as Intacs can not help those with extreme vision problems, intraocular lens implants (IOL) are a new choice accepted by the FDA in 2004 to deal with modest to severe nearsightedness. The Artisan lens, produced by Ophtec, resembles the sort of lens dental implant used to recover vision complying with cataract eye surgical treatment.
The new IOL, called the Artisan, is planned for only clients who have 2.5 diopters or much less of astigmatism.
The man-made lens does not change the all-natural lens, yet is placed before it. The primary problem discovered with the implant was the constant loss of endothelial cells in the corneas of individuals who got the implants. The endothelium is a layer of cells that line the undersurface of the cornea and also are necessary in keeping the cornea clear. A three-year research revealed a continual steady loss of endothelial cells of 1.8 percent a year. At this moment, no person can forecast whether this loss will proceed at the very same rate forever, and even its effect on corneal function.
To minimize lasting impacts of the device on the corneal endothelium, the FDA is requiring that the brand-new lenses be identified to specify that they must only be dental implanted in over at this website patients whose corneal endothelial cells are thick sufficient to endure small cell loss.
Extra serious problems were couple of: retinal detachment (0.6%), cataract growth (0.6%), and also corneal swelling (0.4%). The FDA is needing Ophtec to conduct a five-year follow-up survey of its implant people to better examine the post-surgical occurrence of cataract development, retinal detachment and other ocular diseases.
The Artisan lens is intended to be an irreversible implant.Though it could be eliminated surgically, vision might not constantly go back to just what it was before getting the lens. Due to the fact that it does not influence astigmatism, individuals with this trouble may still need glasses.


Temporal optics is a new and evolving field, and utilizing it can revolutionize optical data processing. Our lab focuses on developing advanced temporal optics devices. We design, fabricate and assemble the main building blocks of any temporal scheme which is the ultra-fast laser and the highly nonlinear fiber. Thus, we tailor the wavelength, bandwidth and repetition rate of the ultra-fast fiber lasers and the dispersion curve of the highly nonlinear fiber to the specific temporal scheme. Thanks to these abilities, and together with the experience in complex temporal schemes we are able to pursue advanced temporal schemes which were never been done before. Our temporal devices are useful for the telecommunication field since they will replace electronic devices leading toward optical data processing.


NanoLight: light and matter at the nanoscale
Invisibility cloaks are related to solar energy new trends to fight global warming. And medieval rose windows can explain some aspects of nanomedicine, early diagnosis and noninvasive phototherapies. How? All these phenomena share a common ingredient: the interaction of light with nanomaterials. Come and fabricate your own nanoparticles and use them on a series of photonic challenges involving ultimately the interaction of light with living cells, at the core of cancer diagnosis and therapies.
Light usually refers to the visible part of the electromagnetic spectrum, plus the infrared (heat) and the near ultraviolet. Light waves, as any other electromagnetic radiation, transport energy and momentum. Being able to control the interaction of light with matter at the nanoscale allows the construction of materials to concentrate heat in very small places, or select specific wavelengths (colors) of an incoming white radiation. Roughly speaking, we can engineer materials to deal with energy and information with accuracy and precision unreachable before the arrival of nanotechnology.
In this course, we have focused on the interaction of light with metallic nanoparticles. You will understand how the free electrons on these nanoparticles resonate with the electric field of light, and how this resonance depends on the composition and more critically on the size and form of the nanoparticles. You will then be asked to solve a series of chained challenges –which go from aligning an optical experiment to being part of the process of nanofabrication– with the ultimate goal of controlling and measuring heat generation at the nanoscale.
A potential application of this technique is photothermal cancer therapy, in which cancerous cells are destroyed with concentrated heat, but during your stay at ICFO you will be also exposed to many other uses and features of the interaction of light and matter at the nanoscale, dealing with nanomedicine, solar cells, new materials, and even quantum information.
Physics, photonics, engineering, biomedicine
Lab coat, laptop


Overview Energy-saving lamps, also known as energy-savi […]
Overview Energy-saving lamps, also known as energy-saving light bulbs, electronic light bulbs, compact fluorescent lamps, and all-in-one fluorescent lamps, are lighting devices that combine fluorescent lamps with ballasts (ballasts) into a single unit.
Philips was born in the Netherlands in the 1970s. The official name should be a rare-earth trichromatic compact fluorescent lamp. Just because the light source achieves the same light output, it only consumes 1/5 to 1 of the power of an ordinary incandescent lamp. /4, which can save a lot of lighting power and costs, so it is called energy-saving lamps.


TelescopesGriffith Observatory is one of the premier public observatories in the world. One of the principal reasons is the presence and regular availability of high-quality public telescopes. Griffith J. Griffith wanted the public to have the opportunity to look through a telescope, which he felt might broaden human perspective. Mounted in the copper-clad domes on either end of the building, the Zeiss and solar telescopes are free to the public every day and night the sky is clear.
Since opening in 1935, more than seven million people have put an eye to Griffith Observatory's original 12-inch Zeiss refracting telescope. More people have looked though it than any other telescope in the world. Located in the roof-top dome on the building's east end, the Zeiss telescope is intended mainly for nighttime viewing by the general public, commonly targeting the Moon, planets, and brightest showpiece objects of our galaxy. A popular public destination when special celestial events occur, more people viewed Halley's Comet and comets Hale-Bopp and Hyakutake through the Observatory's Zeiss telescope than any other telescope on the planet.
The telescope itself is in excellent condition and was unchanged by the renovation and expansion project. The copper roof of the telescope dome was repaired and restored, and the dome's drive mechanisms were replaced. The most significant change is the addition of a new exhibit station located in the Hall of the Eye exhibit hall below the telescope dome. The station provides live video and audio feeds from the telescope and allows visitors unable to climb the stairs into the telescope dome to have an observing experience. Most nights, other telescopes also are available on either the roof or front lawn to allow those in wheelchairs to observe directly.
When the night sky is clear, the Zeiss telescope is open from the roof and serves up to 600 visitors per night. One of the Observatory's experienced telescope demonstrators guides the public in looking through the eyepiece of the 12-inch Zeiss refractor (so called because its light is collected and focused by a 12-inch diameter glass lens at the front of the 16-foot-long telescope tube). The main telescope tube carries a smaller 9 -inch refracting telescope piggyback, which permits two different views of a single object, as appropriate.
The telescope sits on a tilted mounting (an equatorial mount) aligned with the Earth's axis, and it is slowly turned by a motor to compensate for the Earth's rotation so that objects remain centered in view for as long as is desired. Counterweights precisely balance the telescope so that the Telescope Demonstrator can easily move the instrument by hand in spite of its 9,000-pound weight. The unique design of construction by Zeiss also counteracts the bending of the telescope due to gravity with counterweighted levers in the telescope's tube and mounting. Such a system is said to be "stress compensated."
The genesis of Griffith Observatory's public telescope occurred when Griffith J. Griffith was invited to visit to Mount Wilson Observatory, then home to the world's largest operating telescope, the 60-inch reflector. While there, he was given the opportunity to view a celestial wonder through the telescope. Profoundly moved by the experience, Griffith seized on the idea of constructing a public observatory with a telescope that could be used by all residents of Los Angeles. He specified in his will that the telescope was to be "at least 12-inches in diameter" and "complete in all its details" and was to be located "high and above the Hall of Science." In 1931, the Griffith Trust ordered the telescope from the Carl Zeiss Company of Jena, Germany; the $14,900 spent on the instrument was the first purchase of material for Griffith Observatory.
For more information about the Observatory's Zeiss telescope, please click here.
Griffith Observatory's three solar telescopes bring the Sun directly to visitors in the west rotunda of the Ahmanson Hall of the Sky. On clear days, each of these telescopes provides a different real-time view of our local star, including sunspots and solar flares. The three beams of sunlight for the telescopes are focused into the rotunda by a triple-mirrored tracking device called a coelostat (Latin for 'sky-stopper'), which is located above in the western dome of the building. The solar telescopes operate only during clear daytime hours.
Coelostats are often used in solar observatories where moving small tracking mirrors is preferable to moving large telescopes attached to heavy equipment. Designed by Russell Porter, whose drawings served as the basis for both the 200-inch telescope at Palomar Observatory and Griffith Observatory, the three mirrors of the Observatory's coelostat move continuously during the day to remain focused on the Sun as it appears to move across the sky. The incoming light bounces off one mirror to another and then down through openings in the rotunda ceiling to the telescopes below. The telescopes show a white light image of the Sun, a view through an H-alpha filter (spectrohelioscope), and a solar spectrum (spectroscope). One of the largest and most-visited public solar observatories in the world, Griffith Observatory has enabled millions of people to observe the Sun safely.
The coelostat instrumentation in the dome and three telescopes housed in the rotunda remain essentially unchanged by the renovation and expansion project, other than new motors for the dome, new electrical service, and restoration of the telescope bronze and optics. A new station in the gallery receives live signals from each of the telescopes to provide an equivalent observing experience for those unable to climb the stairs to the rotunda where the telescopes are mounted.
For more information about the Observatory's solar telescope, please click here.
On any given night, Observatory staff may set up one or more free-standing telescopes on the lawn or East Observation Terrace to enable more people to put their eyeball to the sky. Once a month, the Los Angeles Astronomical Society and Sidewalk Astronomers hold a star party at the Observatory in which many more telescopes are available for public viewing.
In addition, the Observatory has mounted a number of coin-operated telescopes along the south and west perimeters of the building. These devices enable visitors to look at objects in the Los Angeles Basin and surrounding mountains.


Color animated solar cells are tightening the effectiveness space, carbon solar cells have actually ended up being a fact as well as clear solar cells are coming to be functional. Regardless of these growths there is still substantial area for 3rd generation solar cell modern technology to enhance.
Because Michael Gratzel’s site paper on color animated solar cells in 1991, clear cells have actually been an appealing location of solar research study. Most significantly the effectiveness of clear cells might not complete with crystalline modern technology, which stays the king of solar. Clear cells, and also various other 3rd generation modern technologies, are not extremely reliable or long lasting, they can be versatile, very easy to set up and also have distinct physical residential or commercial properties.
The group’s natural solar cell was 1.7% performance as well as higher than 65% openness. The brand-new solar cell established at UCLA has actually taken substantial actions to enhance efficiency.
70% is a document for photovoltaic or pv openness and also, while 4% might not appear like a lot, maintain in mind that slim movie solar cells have a standard of 10% performance. Yang Yang, the teacher that led the research study, claimed “These outcomes open up the possibility for noticeably clear polymer solar cells as add-on parts of mobile electronic devices, building-integrated photovoltaics as well as clever home windows and also in various other applications.”
Usually 3rd generation innovations, such as clear solar cells, utilize titania (TiO2) nanoparticles to enhance their effectiveness. The cell’s conductor, which is completely clear, is composed of a silver nanowire movie doped with titania nanoparticles. Previous styles consisted of nontransparent conductors which, rather normally, did not make for really great clear photovoltaic or pv cells.
Acquiring a grid connection inverter for solar home windows might enforce an additional expense on the home owner, yet it would certainly not be extremely substantial. Keep in mind that if the specific currently has actually a dispersed power resource, including solar home windows ends up being also a lot more easy.
Clear photovoltaic or pv product can be made use of in all of these applications to generate tidy, trusted power. When brand-new home windows are required in a structure, https://www.jdkenergy.com/ clear solar cells can be change glass panels for really little added expense. Solar glass is a simple selection for companies as the cells, which are most likely to be really affordable, will certainly decrease their electrical power expenses.
Reduced price and also resilient clear cells can match existing solar modern technology by raising the variety of wavelengths of light that are soaked up. The UCLA cell, which runs mostly on infrared light, might not be corresponding to this innovation, however a cell with a various band space could be.
Color animated solar cells are tightening the effectiveness space, carbon solar cells have actually ended up being a truth and also clear solar cells are coming to be sensible. Given that Michael Gratzel’s site paper on color animated solar cells in 1991, clear cells have actually been an appealing location of photovoltaic or pv study. Clear solar cells run utilizing the very same device as even more usual solar panels to create electrical power: the photovoltaic or pv result. Typically 3rd generation innovations, such as clear solar cells, utilize titania (TiO2) nanoparticles to boost their performance. The UCLA cell, which runs primarily on infrared light, might not be corresponding to this innovation, however a cell with a various band void could be.
Numerous various layouts and also products are made use of to make clear solar cells. The cell as a result creates many of its electrical energy from infrared light. The scientists were not really worried regarding this, claiming that some added study might prolong the cell life substantially.
Clear solar cells run making use of the very same system as even more usual solar panels to generate electrical power: the photovoltaic or pv result. Clear cells vary from slim as well as crystalline movie panels in that they take in just non-visible light, such as infra red and also ultraviolet. In enhancement, the cells are typically adaptable given that they are not made from silicon wafers and also have effective production techniques, such as rolling, that create massive economic climates of range.
Styles have actually currently been made where the cell would certainly live straight on the display, listed below the capacitance degree, enabling for customers to maintain utilizing their phones as touch displays. Numerous likewise think that the cells can be effectively set up in high-rise buildings as well as various other huge companies which have a whole lot of home windows as well as sunlight. 3M has their very own clear solar cell that they are intending to pitch to federal government and also company structures.


One of the huge arguments currently circulating about LED lighting is whether it comprises Ultra Violet (UV) light. # & you 39;ll discover many announcements online saying that”LEDs don’t have any UV emissions” Then there are the ones that state this isn’t entirely correct. So which is it? It is dependent upon how you look at it.
It 's crucial that you know what folks are actually inquiring. Most actually appear to get concerned about one of 2 things: Can there be a health issue from utilizing LEDs, and / or are LEDs better compared to other light sources for shielding UV movie and maintaining art, artifacts, and even décor from discoloration and aging?
To answer the questions we have to first look at just how White Light LEDs are created. Without getting into all of the scientific details of this varying Gallium doping combinations of semiconductor diodes, it's important to see that LEDs in and of these are oblivious of white light. White light consists of all of the colours of the spectrum. While science managed to create LEDs from the three additive primary colors of light (Red, Blue and Green) and varying colors of those colours, a real white proceeded to bypass them.
It wasn’t before 1993 when Vibrant Blue LED's were made which White LEDs could take a look. Science found when a Vibrant Blue LED is coated with phosphor, together with a rare earth chemical, the blue light is transformed by the phosphor to some other colour wavelength producing exactly what the naked eye perceives as white lighting.
Unlike a shared beliefs, the range of the light emitted by this phosphor mixture is broadband in nature also elicits at more wavelengths providing a complete range of visible light.
It is worth noting that although Fluorescent technology also uses phosphors (the coat to the interior of the fluorescent and CFL lamps), the light spectrum once the phosphor unites with LED light is a lot thinner.
With White LEDs, the depth of the phosphor coating and the total amount of yellow in the phosphor itself, in part decides the quantity of vivid blue LED light that’s absorbed by the phosphor. This results in the various CRI and Kelvin Temperatures of this LED. The more blue consumed by the phosphor, the lower the Kelvin temperature as well as also the yellower (redder) the mild. This also impacts the efficiency of this LED. The reduced the Kelvin temperature, the greater of the true LED light is absorbed by the phosphor and the more energy needed to receive the exact same light output.
back to our initial question, do White LEDs used in general lighting applications comprise UV lighting? Brilliant Blue LEDs used in producing White LEDs do create some UV (from the 400-425nm scope )nonetheless, that the quantity of UV emitted by the phosphor, is significantly less than that which is generated. In fact, the last quantity of emitted UV is so modest as to mathematically state that white LEDs don’t emit any UV light.
So, is there sufficient UV emitted to present a wellness risk? ) No, the quantity of UV emitted by White LEDs is well under a single percentage point. For this exact same reason LED Lighting has come to be the light kind of option for museums forcing to maintain valued artifacts and preserve their original colours. But you would rather not use an unfiltered LED at a clean room in which a few kinds of movie are sensitive to UV to be influenced by mild to wavelengths of 415nm.
In conclusion, does LED lighting comprise Ultra Violet Light? ) It is dependent upon how you look at it. White LEDs create some UV lighting, however they exude less.


The item is a simple and practical digital golf range distance finder scope, which is a precision optical instrument designed for finding the distance between you and the flag. It adopts ruby coated optical lens with UV protection , and features 7 times magnifications with 462 ft, field of view at 1000 yards. It supports two operational modes, namely green mode and general mode. Besides, it comes with a soft carrying case bag to protect the golf scope. With pocket design and easy to use, it is really a wonderful 7 x digital golf range finder for choice.
- Color: as shown in the pictures.
- Material: durable hard plastic.
- 100% brand new and high quality 7 x Digital Golf Range Distance Finder Golfscope Scope.
- A precision optical instrument designed for finding the distance between you and the flag.
- 7 Times magnification with 462ft - field of view at 1000 yards.
- Ruby coated optical lens with UV protection.
- Two operational modes: Green mode and general mode:
1. The green mode is designed especially for golfers - you can easily measure the distance from where you stand to the cup.
2. The general mode can be used in other situations - it can calculate the distance between you and the target you desired.
- Powered by 2 * CR 2032 3V batteries (included).
- Come with a soft carrying bag case to protect the golf scope.
- Pocket size, lightweight, and easy to carry.
How to Use
1. Press the ON /Adjust Button.
2. Aim the base line on the screen on a level with the green.
3. Press ON / Adjust button to lower the location of horizontal line to the top of the pin.
4. The number displayed on the top of the screen is the distance in yards.
1 * Carry Strap
1 * Soft Carrying Bag Case
2 * CR2032 3V Batteries


It is a photographic lightening device that is used to create a soft and diffused light. The design of a soft box is such that it is an enclosure around the light source, has sides for reflecting, back walls and diffusing material in front of source. The make the reflecting efficient sides and back walls are made of bright surface –either they are aluminized or covered with aluminum foil. So it does not matter if your light source is flash or continuous like florescent bulb. But keep in mind that to bear the wattage of heat of light it must be heat rated.


Photodiode is A photodiode is a semiconductor device that converts light into electrical current. The current is generated when photons are absorbed in the photodiode. Photodiodes can contain optical filters
There are 4 types of photodiode Avalanche Photodiode, PIN Photodiode, Schottky Photodiode and PN photodiode. Avalanche Photodiode: Avalanche photodiode technology is used in areas of low light due to its high gain. In contrast,
As the applied reverse bias increases, the photodiode current increases sharply. The blocking voltage applied at this point is called the breakdown voltage. This is the maximum applied reverse voltage
Insert the 100 ohm resistor into the breadboard and connect each leg of it to one leg of the photodiode. Connect the probes of the digital multimeter to the legs
Light enters the photodiode region which is not folded and causes the formation of electron-hole pairs. Under the action of the electric field, electrons migrate to the avalanche region.
Main Difference between LED and Photodiode is that LED converts electrical energy in to Light and Photodiode convert light in to electrical energy.
A photodiode is a transducer that captures light energy and converts it into electrical energy. Flow is generated when photons are absorbed in the photodiode. A small amount of current
The responsivity of a photodiode can be defined as the ratio of the photocopic current produced to the power of light that occurs at a certain wavelength. Responsivity (or radiation
What is a light dependent resistor? a ldr is a photo-conductive material. when the light is exposed to ldr, the electromagnetic radiation is sufficient to excite the electrons towards the
The photodiodes are mainly used as a switch, that is to say when the light comes on. now the current generated by a photon is very small. If the diode
Why is photodiode operated in reverse bias? a reverse-biased pn junction receives only a small leakage current. the photocurrent generated by the incoming light is therefore easy to detect. if
Why is photo diode reverse bias while LED is forward bias? The most used applications are to emit light, while the photodiode detects the presence of light. when it is
How to measure light absorption percentage using a photodiode let’s trying to find the absorption of some sort of glass filter plate. connect your photodiode (pd) to a series resistor and


Eye Surgical treatment
Eye Surgical treatment has come to be a mainstream technique of vision correction, and also this post will clarify the advantages and also downsides of three various methods being supplied to the medical customer.
Lasik Eye Surgical treatment
LASIK is the phrase for Laser-Assisted In Situ Keratomileusis as well as is an eye medical system which completely remedies vision by eliminating a thin layer of the cornea. This treatment works best on individuals with moderate to high degrees of myopia (nearsightedness), low to moderate degrees of hyperopia (farsightedness) and also astigmatism related to nearsightedness, and also who have thick corneas. It is one of the most widely known surgical vision modification method.
People with typical eye view see objects clearly due to the fact that pictures are brought into a right centerpiece by the cornea and lens of the eye. Preferably, the cornea's curvature is equally matched to its length in a typical eye. People with astigmatism, nearsightedness or hyperopia have irregularly shaped corneas, so the items seen are not concentrated appropriately. LASIK changes corneal form by precise removal of corneal cells, and also by doing so fixes the eyes' focusing power.
There are, nonetheless, risks to LASIK eye surgery.
There is a remote opportunity of full loss of vision. If this takes place, it is typically due to the fact that the patient had a pre-existing condition which ought to have averted the surgical treatment in the first place, such as maternity, cataracts, arthritis, diabetes mellitus, glaucoma, or lupus. People with big students are also bad candidates for LASIK. Dry eye disorder will certainly be intensified by this procedure.
A couple of patients complain that they completely see "ghost" pictures, have obscured vision, decreased contrast and bad night vision. When LASIK was first presented, 5% of individuals had post-operative problems; however, improvements in the procedure have actually created this rate to go down to much less compared to 1% if LASIK is carried out by skilled professionals as well as people are properly evaluated before surgical treatment. If troubles do occur, they can typically be resoved by a retreatment.
FDA has actually accepted LASIK laser eye surgical procedure because 1998. While there are a lot of pleased individuals, there are nevertheless no long-term researches concerning its effects. Recognize the constraints and also the threats of LASIK eye surgical procedure prior to you sigh for the treatment.
Though much less popular, these tiny implants could boost vision in individuals with moderate to modest nearsightedness without the risk of permanent eye damage fundamental in the cells elimination strategy of LASIK. Intacs are semi-circular disks dental implanted in the cornea which extend it to assume a flatter shape. Though slightly less accurate than LASIK, they are removeable and replaceable, so if the person has an unanticipated over- or under-correction, the dental implant can be removed and an additional of a various dimension placed to obtain the preferred correction. The implants are located beside the cornea, so the central visual area is completely undamaged and also intact, as well as the stamina of the cornea is undiminished, making it a much better alternative for pilots and those that take part in call sporting activities where eye injury is an opportunity.
Intacs are unsuitable for extreme nearsightedness and greater than minor astigmatism (1.00 diopters), as the cornea can just be stretched until now. If the Intacs are eliminated, vision returns to its preoperative degree. Besides vision correction, Intacs are additionally utilized to deal with keratoconus.
Intacs are FDA authorized and also Ten Years studies have actually revealed no significant problems with Intacs and also very few person grievances; nonetheless, since the treatment takes much more training compared to LASIK, there are fewer eye surgery facilities using it. Nonetheless, the Intacs web site gives a checklist of specialists in each state, as well a couple of in Canada, Europe and Mexico.
Due to the fact that many people do not intend to run the risk of LASIK and Intacs could not help those with serious vision problems, intraocular lens implants (IOL) are a brand-new option authorized by the page FDA in 2004 to correct modest to extreme nearsightedness. The Artisan lens, made by Ophtec, is similar to the kind of lens dental implant utilized to bring back vision adhering to cataract eye surgical treatment.
The brand-new IOL, called the Artisan, is planned for only people who have 2.5 diopters or much less of astigmatism.
The synthetic lens does not change the all-natural lens, however is put in front of it. The primary trouble found with the dental implant was the steady loss of endothelial cells in the corneas of clients that got the implants. The endothelium is a layer of cells that line the undersurface of the cornea and are necessary in keeping the cornea clear. A three-year research revealed a regular steady loss of endothelial cells find this of 1.8 percent a year. At this moment, no person can anticipate whether this loss will proceed at the exact same price forever, or even its effect on corneal function.
To reduce long-lasting effects of the gadget on the corneal endothelium, the FDA is calling for that the new lenses be labelled to define that they need to only be implanted in clients whose corneal endothelial cells are thick adequate to withstand minor cell loss.
A lot more serious problems were couple of: retinal detachment (0.6%), cataract growth (0.6%), and corneal swelling (0.4%). The FDA is needing Ophtec to perform a five-year follow-up study of its dental implant patients to better assess the post-surgical incidence of cataract development, retinal detachment and various other ocular conditions.
The Craftsmen lens is planned to be an irreversible implant.Though it could be gotten rid of operatively, vision might not constantly go back to just what it was before obtaining the lens. Due to the fact that it does not affect astigmatism, individuals with this problem might still call for glasses.


Magpul is very well known for its firearm accessories and outdoor equipment. Regarding their eyewear, they elevate to a new standard with their inventive Eyewear Performance Technology. They understand the demand for suitable and durable eyewear that makes all the difference during outdoor activities, tactical operations, or simply a day at the shooting range. That’s why they create ballistic-rated eyewear from high-quality material with an enduring design. It enhances the wearer’s vision, comfort, and safety in the most demanding environments. Suitable for military and law enforcement operations to sports and outdoor adventures.
Magpul’s eyewear can withstand high-velocity impacts. The frames are made of TR90NZZ, the strongest thermoplastic frame material you can find. It will give the wearer maximum impact resistance, flexibility, and comfort. In other words durable ballistic protection. They test them to high impact levels comparable to being hit by bomb shrapnel. Most of their models exceed MILSPEC (MIL-PRF 32432) and ANSI Z87.1, an important norm for the eye protection industry in the USA.
The unbreakable lenses are made from polycarbonate, the same material that flight helmet visors are made of. They give a clear view and several lens options are available as polarized and non-polarized lenses, or mirroring options. The lenses are engineered to minimize distortion and enhance visual clarity. This contributes to situations in which identifying targets, assessing surroundings, and making accurate judgments are crucial. The lenses are oleophobic coated to provide liquid and chemical protection and they are scratch-resistant. An anti-reflective coat is applied to minimize the distraction of reflections and maintain an unobstructed field of view.
Magpul’s frames offer you comfort through the padded and low-profile temples that can be easily integrated underneath helmets, communication headsets, and over-the-ear hearing protection. The frames also feature rubber nose and temple pads that are overmolded into the frame which ensures dependable, non-slip reliability and comfort.


Read on for more explanations of some of the most common and useful terms.
All cameras have a diaphragm inside them that can change size to admit more or less light. This is very similar to how the human eye works a circular opening that changes size depending on light levels. For many, the most confusing part about aperture is the nomenclature used. This is quoted in what are commonly referred to as ‘f-stops’. To better explain, a smaller f-stop number such as f/1.8 means the aperture will open wider while a larger f-stop number such as f/22 means the aperture will open very slightly. Unless it is an SLR, your camera will have a range of available f-stops, for example f/2.8-f/8. This means that the widest the aperture can open is f/2.8 and the narrowest, f/8.
Your digital camera contains a light-sensitive panel that records the light that hits it when you press the button to take a photo. This performs the same function that film does in older cameras. The sensor remains hidden behind the closed shutter (see below) and is only exposed when a photo is taken. Your camera records the light hitting the sensor when you take a picture, and stores the result on the memory card in the camera.
A cameras shutter sits just in front of the image sensor. It is normally closed so that no light is getting through to the sensor, but when you press the button, it opens for a certain length of time to expose the sensor to light. The shutter in most cameras will be comprised of two curtains. For longer exposures, the whole sensor might be exposed for a period of time before the second curtain closes it. In the case of fast shutter speed however, the first curtain opens only a tiny gap between it and the second curtain, and travels across the sensor with the second curtain following close behind. The speed of the shutter is expressed in whole seconds as well as fractions of a second. A shutter speed of 1/640 means the shutter will open and the sensor exposed for only one-six-hundred-and-fortieth of a second.
The term ‘exposure’ refers to exposing the sensor or film to light in order to take a photograph. In addition, a photograph is referred to as an ‘exposure’ for this reason. When you take a photograph, how much light the light-sensitive part of the camera is exposed to is determined by the aperture and shutter speed settings, as explained above. Darker conditions will require an exposure with a lager aperture setting, a slower shutter speed, or both. The term ‘correct exposure’ refers to the approximation of what could be seen by the photographer’s naked eye at the time of the photograph, however this is truly a matter of taste. It is possible however, to take a photo in the dark of night at a shutter speed so long that the photo appears to have been taken in the daytime.


Included Components AF FX NIKKOR 70-300mm f/4-5. 6G Zoom Lens for Nikon DSLR Cameras LC-62 Snap-on Front Lens Cap LF-4 Rear Lens Cap HB-26 Bayonet Lens Hood PRODUCT HIGHLIGHTS F Mount Lens/FX Format Aperture Range: f/4 to 32 Super Integrated Lens Coating Auto and Manual Focus Minimum Focus Distance: 4. 9′ Filter Diameter: 62mm Rounded 9-Blade Diaphragm specs Aperture Control Design : Aperture controlled by camera Color: Black Compatible Lens Hood Part Number: HB-26 Compatible Mountings: Nikon F (FX) Focus Type: Screw drive from camera Image Stabilization: No Item Dimensions: 2. 91 x 2. 91 x 4. 61 inches Item Display Weight: 0. 93 pounds Item Weight: 0. 94 pounds Lens Design: Telephoto Lens Type : Zoom lens Macro Focus Range : 1. 50 m Material Type: Plastic barrel, plastic mount Maximum Aperture: ?/4 Maximum Aperture Range: F4. 0 – F5. 6 Maximum Focal Length: 300 mm Maximum Format Size: 35mm full frame Minimum Aperture: ?/45 Minimum Focal Length : 70 mm Minimum Focal Range : 58. 8 inches Model Year: 2013 Number of Diaphragm Blades: 9 Number of Elements: 13 Number of Groups: 9 Optical Zoom: 4. 3x Photo Filter Thread Size: 62 mm Real Angle Of View: 34° 20′ – 8° 10′ DX Picture Angle: 22° 50′ – 5° 20′ Style Name : Zoom Lens with Auto Focus UNSPSC Code: 45121603 Zoom Type : Motorized Zoom Package Weight 1. 5 lb. Box Dimensions (LxWxH) 7. 0 x 5. 0 x 5. 0″ Note: all lens covers have to be opened counterclockwise.
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This lens only work on AF with the Nikon D7000 cameras and up
Autofocus is not supported by DSLRs lacking an autofocus motor, such as the D40, D40x, D60, D3000, D3100, D3200, D3300, D5000, D5100, D5200, D5300, and D5500 cameras, and the lens may be used with manual focus only.
This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, A minimum 90-day , and may arrive in a generic box.