Making the lens fit the camera
OK, to answer the burning
question: will the lenses from my old film camera fit any digital camera?
Minolta XG-1 or other
manual focus Minoltas, such as the SRT-101 - no, they won't fit.
Lenses that fit an
automatic focus Minolta - Maxxum or Dynax - will generally work on a Sony or
Canon AE-1 or other manual
focus Canons, such as the FT series or F1 - no, they won't fit.
Lenses that fit an
automatic focus Canon EOS - Rebel - will generally work on a Canon DSLR.
Pentax K-Series (bayonet
lenses) - yes, they will fit Pentax and Samsung digital SLRs but they won't
focus automatically and they may be a pain to set the exposure.
Nikon F (bayonet lenses) -
yes, they will fit Nikon digital SLRs but they won't focus automatically and
they may be a pain to set the exposure.
Even if they will fit,
you may not want to use old lenses on a new digital camera.
Digital SLRs mostly have a
sensor that is smaller than 35mm film. That means that the 28mm lens from
your film camera is not a wide-angle lens when used on a digital camera. So
you're going to need one of the lenses that usually is included - pretty
cheaply - with the purchase of a DSLR. Most come with an 18-55mm lens that
gives a field of view similar to a 28-90mm lens used on a film camera. And
they function properly with the new camera, and they focus automatically,
and some even have image stabilization.
Old lenses you may want
to use with a DSLR:
50mm f1.8 or f1.4 have
much more light gathering ability than the typical zoom lens, so you can
take better photos in low light levels. An old 135mm f2.8 or f2.5 lens is a
great "long" portrait lens or action and stage lens because of its greater
I'm talking about high
quality lenses here - crappy lenses are even crappier when used on a DSLR.
Digital cameras work best with lenses designed for them, particularly late
model lenses with low internal flare levels.
Back to the original
article, written in 1998
One of the reasons our customers buy advanced cameras is to have the option of choosing
different lenses. Some think that any camera can take any lens, but no! None of the
autofocus SLR's on the market take lenses designed to fit any other brand.
In the older, non-AF SLR, here's a brief rundown on what fits what:
Pentax Screw mount (also called Universal thread, M-42 mount) was actually first
used on the East German Contax S and D cameras. The basic thread mount fits
- old Pentaxes (Spotmatic, H-series, S-Series) old Yashicas old Rollei
- old Mamiya-Sekors and Mamiyas
- old Ricoh and most older Sears (Tower) cameras
Pentax F and ES had an extra cam for full-aperture metering.
Mamiya MSX and DSX did too, as did some Fujica ST cameras -- but each had that extra cam
in a different spot!
With adapters, screw-mount lenses can be mounted on Rolleiflex SL 35 and still
have automatic diaphragm.
With a different adapter, they can be mounted on Pentax bayonet, but with no automatic
With still different adapters, they can be mounted on Yashica/Contax bayonet, Minolta,
Canon with non-automatic diaphragm.
PENTAX M, K BAYONET: (PK mount) Fits Pentax M, K, A series cameras. The earlier
ones are not programmed on Pentax A- and P- series. Fits many Ricoh, Sears, and Chinon
PENTAX A and PROGRAMMED LENSES will fit all model cameras with Pentax K mount.
Aftermarket models for Pentax bayonet mounts:
Vivitar PK/A/R lenses Will fit all Pentax and Ricoh,
Sigma KPR lenses will fit, and operate in program modes, on all Pentax and Ricoh Program
Manual mount Pentax bayonet lenses will fit and function on autofocus
Pentax cameras, and AF lenses will fit the manual cameras too. The autofocus
function only works when both the camera and lens are an autofocus model, of
- Nikkor-F fits Nikon through F-2. Nikkormats, Nikkorex F and Ricoh Singlex
(reportedly Mamiya made the Nikkorex F camera for Nikon
and possibly also the Singlex models that used the Nikon lens mount.).
- Late model Nikon reflexes use AI (Automatic Indexing) instead of the meter-coupling
prong to connect to the light meter. AI lenses were made with the prong as well for full
- The Series E Nikon lenses didn't even have the prong, so will fit all models but will
not couple to the meter of the early ones.
- Early (non-AI) lenses put on late model cameras will usually fit - but try it gently to
make sure the rim doesn't bind against the camera's lens mount. Don't put early lenses on
an EM, FG, or 4004 or "low-end" AF models.
Fuji and Fujica SLR cameras
- Fuji ST cameras use a Pentax thread-mount lens
- Fuji STX lenses are a Pentax thread lens with an extra cam for full aperture metering.
- Fuji AX lenses are a special bayonet mount. With an X-S adapter, thread mount lenses can
be used on AX series cameras. They will always have automatic diaphragm operation, and
with the X-D adapter will even work in programmed mode. This bayonet
mount is not the same as the Pentax
bayonet mount lens.
Every lens from the earliest SR-7 fits every SLR camera before Maxxum. MC lenses are
meter-coupled. Earliest ones did not couple to the light meter -- they were designed for
the earlier SR-1, SR-2 and SR-7.
MD lenses are capable of programmed operation with X700, shutter priority with XD-5 or
XD-11. If an MC lens is used in the program mode, exposure will be correct but the
in-camera display will not work right. The lens must be closed down to its
smallest marked aperture for this to work.
Lenses to fit a Minolta MD series can be used on a MAXXUM with the special adapters
made by Rokunar and others. The focal length is slightly increased, about 10 %. They're
really a weak teleconverter with a Maxxum mount at the back and an SRT mount at the front.
Mirror lenses used on "ai" Maxxums, or anything else adapted, will not
autofocus. Some Minolta Maxxums can't be used at all with non-automatic lenses - check
with the Minolta fax-on-demand technical hotline about this.
Some independent manufacturers lenses that functioned properly with early
model Maxxums won't work with later models. Minolta changed the chip at one
point. All Minolta AF lenses should work with all Minolta cameras, except
that the 500mm mirror lenses only works with "better" Maxxums.
- Sears cameras have usually used the same lens mount, be it thread or bayonet, as
contemporary Pentaxes. Most were made by either Mamiya or Ricoh. Years ago some Sears
"Tower" brand cameras were made by Pentax.
- At least one Tower camera, the Model 37, used an Exacta bayonet mount!
Canon FD lenses will fit and work automatically on all AE, A, AV, AL. and T series
cameras. Also F- 1, FT-B, TL-B, etc. The older FL lenses have the same breech-lock bayonet
mount, but do not have full-aperture metering pins for the later A and T series cameras.
EOS lenses work only on EOS.
Konica had a series of cameras before the Autoreflex that used a different lens mount.
It's rarely that you'll encounter one -- Konica was the first company to "bite the
bullet" and make the change in lens mount necessary for full automation. No new
lenses are available for those older Konicas, though from time to time we run across used
Less popular lens mounts
Exacta, Petri, Alpa, Topcon, Miranda, Praktica, Leicaflex - each has its own bayonet,
not interchangeable with much of anything, not a significant factor in the marketplace.
Exacta lenses can usually be mounted on Topcon focal-plane models but upside-down!
Interchangeable mount systems:
Some lenses don't fit directly on any camera without a mount. They are designed so that
when the proper mount is attached, they will fit almost any camera.
- T-Mount lenses: many pre-set lenses, mirror lenses, slide duplicators and other devices
that don't have an automatic diaphragm use a system of interchangeable
"T-mounts". Most T-mounts cost about $15-20. There are some female T-mounts
available that allow you to do things like mount a Leica (39mm thread) enlarging lens on a
bellows for close-up work. Example: the Beseler Dual Mode Slide duplicator uses a T-mount
at the top, to mount the camera. It uses a female T-mount at the bottom to mount an
enlarging lens, which is an excellent choice for copying or duplicating slides.
- T-4 mounts are an interchangeable mount system that allow automatic diaphragm operation.
Vivitar and Soligor made them. Mounts and lenses are interchangeable between the two
makers.. T-4 lens adapters were not made for Konica or any shutter- priority system --
with the possible exception of Canon (the mount fits, but EE exposure is erratic.) TX is a
later system that allows programmed operation and shutter priority. Some TX and T-4 mounts
- Tamron has had three separate systems:
- Adapt-a-Matic (adapters for these lenses are no longer available
- Adaptall-2 (almost the same is Adaptall)
Most mounts are $40.
Uniswitch adapters from Samigon let you use Pentax screw mount lenses on various
bayonet mount cameras. None will provide full-aperture metering or even automatic
Reverse adapters let you turn the normal lens of an SLR around, so that you can
take sharp extreme closeups. They do not use the automatic diaphragm mechanism, and leave
the delicate levers exposed.
Return to the Photo/Image News Network Technical Index


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Transparent Solar Technology
Dr. Richard Lunt
Assistant Professor in the Department of Chemical Engineering and Material Science
Transparent solar concentrators can be deployed on existing infrastructure to discretely harvest solar energy. Former attempts at transparent photovoltaics have fallen short, coloring or dimming the light that passed through them. Now, new solar materials can be installed on nearly any transparent surface without affecting the incoming light. Small organic molecules within the concentrator can be tuned to absorb only non-visible wavelengths, allowing natural visible light to pass through. Solar power is converted to electricity by thin photovoltaics strips. This technology is a flexible and inconspicuous means of harvesting solar energy that can be integrated onto building windows and mobile electronic displays.
MSU Technologies is pleased to recognize Dr. Lunt and his team for their research and innovations.


Much talk and excitement has been building up since Nikon launched 2 mirrorless systems almost 2 week ago. Leaked photos and speculation on what the camera was going to look like and what it will sport in terms of specs was right on point.
• 30.3MP Full-Frame CMOS Sensor
• DIGIC 8 Image Processor
• UHD 4K30 Video; C-Log & 10-Bit HDMI Out
• Dual Pixel CMOS AF, 5655 AF Points
• 3.69m-Dot OLED Electronic Viewfinder
• 3.15" 2.1m-Dot Swivel Touchscreen LCD
• Expanded ISO 50-102400, 8 fps Shooting
• Wi-Fi and Bluetooth, SD UHS-II Card Slot
• Multi-Function Bar, Dual Pixel RAW
While some vlogs mention no image stabilization on the camera nor lenses I cannot speculate about image quality or stabilization at the moment.
Canon did put more enphasis on the Lens lineup more than the camera of course by releasing 4 lenses and 3 adaptors for the camera. Each adapter has its own purpose.
a drop in filter adapter for polarizing filter, an ef-eos R mount adapter for connecting old canon glass, and a control ring adapter for settings.


OpenVLC is an open-source, flexible and low-cost Visible Light Communication System platform. Research and development are conducted at IMDEA Networks Institute, in the Pervasive Wireless Systems group led by Dr. Giustiniano.
What is Visible Light Communication - LiFi? Visible Light Communication (VLC), sometimes also referred to as “LiFi", uses standard off-the-shelf visible light LEDs to transmit data using the visible light spectrum. VLC is receiving strong attention from the designers of the 5G networks and beyond. VLC can enable new pervasive wireless systems in the context of the Internet of Things.
Our Mission. The lack of an open-source and low-cost reference platform is hindering the progresses of research and industry in VLC systems. A general-purpose platform would add momentum to VLC and would open up new avenues of VLC research and spark the interest of researchers and engineers. We take an initial step toward this and we design OpenVLC, an open-source Visible Light Communication platform for fast prototyping of new system protocols to build a LiFi network. It runs on a cost-effective yet powerful credit-card-sized embedded board.


Canon has introduced its latest mirrorless camera, the Canon EOS R 100. The 24.1MP APS-C sensor and Dual Pixel CMOS AF camera comes in a compact and lightweight body.
The EOS R100 features a 24.1MP APS-C sensor, several times larger than those found in high-end smartphones, providing a significant improvement in photo and video quality. Not only does this provide flawless colors and stunning detail, but it also gives users the ability to shoot in low-light conditions and get beautiful, authentic bokeh while smoothing out the background, allowing the subject to come into focus. Highlight.
Thanks to the EOS R range’s intelligent autofocus, the EOS R100 has Dual Pixel CMOS AF with fast and accurate subject detection, tracking of subjects’ eyes when using the viewfinder or LCD monitor, keeping up with the action and focusing. issues.
The EOS R100’s video performance has improved compared to a smartphone or DSLR camera, delivering 4K 25p video.1, bringing the advantages of the EOS R System to this easy-to-use, entry-level camera. It’s also capable of recording Full HD video at 60fps and 120fps at 720p, which is ideal for smooth slow-motion videos, which is especially useful when getting creative with vacation content. Reliable Dual Pixel CMOS AF also enables face detection and eye tracking when shooting in Full HD.
More information on the entry-level Canon EOS R100 can be found on the Canon website at the link below, and the camera will start at $480.
Filed Under: Camera News, Technology News
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A total station or TST (total station theodolite) is an electronic/optical instrument used for surveying and building construction. The total station is an electronic theodolite (transit) integrated with an electronic distance measurement (EDM) to read slope distances from the instrument to a particular point, and an on-board computer to collect data and perform advanced coordinate based calculations.
Robotic total stations allow the operator to control the instrument from a distance via remote control. This eliminates the need for an assistant staff member as the operator holds the retroreflector and controls the total station from the observed point.
Most total station instruments measure angles by means of electro-optical scanning of extremely precise digital bar-codes etched on rotating glass cylinders or discs within the instrument. The best quality total stations are capable of measuring angles to 0.5 arc-second. Inexpensive "construction grade" total stations can generally measure angles to 5 or 10 arc-seconds.
Main article: Distance measurement
Measurement of distance is accomplished with a modulated infrared carrier signal, generated by a small solid-state emitter within the instrument's optical path, and reflected by a prism reflector or the object under survey. The modulation pattern in the returning signal is read and interpreted by the computer in the total station. The distance is determined by emitting and receiving multiple frequencies, and determining the integer number of wavelengths to the target for each frequency. Most total stations use purpose-built glass corner cube prism reflectors for the EDM signal. A typical total station can measure distances with an accuracy of about 1.5 millimeters (0.0049 ft) + 2 parts per million over a distance of up to 1,500 meters (4,900 ft).
Reflectorless total stations can measure distances to any object that is reasonably light in color, up to a few hundred meters.
The coordinates of an unknown point relative to a known coordinate can be determined using the total station as long as a direct line of sight can be established between the two points. Angles and distances are measured from the total station to points under survey, and the coordinates (X, Y, and Z or easting, northing and elevation) of surveyed points relative to the total station position are calculated using trigonometry and triangulation. To determine an absolute location a Total Station requires line of sight observations and can be set up over a known point or with line of sight to 2 or more points with known location, called Resection (Free Stationing).
For this reason, some total stations also have a Global Navigation Satellite System receiver and do not require a direct line of sight to determine coordinates. However, GNSS measurements may require longer occupation periods and offer relatively poor accuracy in the vertical axis.
Surveying or land surveying is the technique, profession, and science of determining the terrestrial or three-dimensional positions of points and the distances and angles between them. A land surveying professional is called a land surveyor. These points are usually on the surface of the Earth, and they are often used to establish maps and boundaries for ownership, locations, such as building corners or the surface location of subsurface features, or other purposes required by government or civil law, such as property sales.
Surveyors work with elements of geometry, trigonometry, regression analysis, physics, engineering, metrology, programming languages, and the law. They use equipment, such as total stations, robotic total stations, GPS receivers, retroreflectors, 3D scanners, radios, handheld tablets, digital levels, subsurface locators, drones, GIS, and surveying software.
Surveying has been an element in the development of the human environment since the beginning of recorded history. The
This Content Originally Published by a land surveyor to Land Surveyors United Network


Digital Light G-802A
1. Digital lights are characterized by the continuous output,
2. Use E27 daylight bulb, 5400K standard color temperature, accurate light position, high efficiency, low power consumption and high color rendering properties.
3. They are reliable light source for shooting portraits,fashionable dresses,wedding photos and advertisements.
4. Radiating angle: 60°.
Digital light continuous light source with a compact and luminous brightness strong design concept, each has its unique performance and scope of application , lamp and lampshade can be demolished, Reduce the transport volume and cost; light effect and light loss is small, simple operation cost-effective, is the first choice for personal light source. Technical parameters
Rated voltage: AC110V or AC220V
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Measuring time-varying signals with a single 2D image
Semiconductor sensors have extended the range of human's ability to sense photons from a mere 400-700 nm to 200-3000 nm. We can measure single photons, and we can measure them with increasingly higher spatial resolution. However, we have more difficulty measuring photons' arrival times. Mostly, we just collect photons in pixels over an exposure and integrate the result. We can take multiple exposures over time, and these are time stamped. But the arrival times of photons within an exposure are not measurable using current techniques. The standard approach to get some temporal resolution is to simply take more exposures with shorter integration periods but this has issues with data throughout and signal to noise.
The concept is to measure the light from the same star with a group of pixels, each having a different temporal exposure modulation. In the same way that an RGB array acts as spectral separator, a modulation array acts as a separator of temporal information that occurs during the integration period. Instead of red, green, and blue pixels, we have different exposure modulations for each pixel. This technique allows the user to find temporal behavior during the exposure itself by multiplexing time information on spatial pixels. Beyond stars, the same technique can be used to achieve higher frame rates in optical cameras, thereby overcoming limitations from sensor readout and shutter speed.
This document accompanies a presentation given for the Rice University Astronomy Seminar and describes a method for subtracting ambient light that can be generalized via a Gram system to measure time variability of optical signals using a single image exposure. As the RGB Bayer filter projects the wavelength spectrum onto a wavelength bandpass basis, the temporal filter herein described projects the temporal function of a signal onto temporal basis using an array of optical modulators. Reconstruction of the original optical signal can then be achieved by solving a Gram system.
Liquid Crystal Display
The ideal solution would be a programmable modulation for each pixel. With current state of the art LCD technology, it is possible to place an individually programmable modulator in front of each pixel for pixel pitches as small as 27.5 microns. This means the modulation function and the number of modulators can be chosen on the fly or perhaps in response to previous measurements. Because they are used for RGB displays and have undergone decades of industry research, LCDs are optically broadband and highly robust over varied operating conditions. Perhaps the only drawback of the LCD is a standard refresh rate of at most 120 Hz.
An extra benefit of an LCD placed at the focal plane is its dual use as a locally adaptive shutter to enhance the Dynamic range of the sensor. Dynamic range problems have arisen by which increasingly larger telescopes are saturating on dim reference stars. Saturation of stars can lead to banding and global offsets for the entire chip leading to errors that are difficult to correct. It is then desired to attenuate the brightest objects without attenuating the dim objects. The LCD can be used to variably attenuate all stars to achieve non saturating measurements. In practice, a test image would be produced with no attenuation that identifies the brightest objects. The exposure over the brightest objects in the array can then be adjusted by dimming pixels only over those objects.
Micro Patterned Analyzers
If pixel pitch becomes a limiting factor for an LCD approach, a polarizer grid can be placed directly on the silicon sensor, either as part of the 1st metal layer during sensor fabrication, or as an added ion beam etched wire grid polarizer. The superpixel would be composed of 4 states: 0, 45, 90, and 135 allowing for a complete identification of the Stokes’s parameters. There are several manufacturers for pixellated or micro patterned polarizer grids that have achieved optical wire grid polarizers as small as 5.6 microns. On top of the grid, a global polarization rotating mechanism rotates the polarized input beam through 180 degrees. When analyzed by the 4 polarizer states, this yields 4 distinct modulation functions. The polarization can be rotated globally by a a single ITO coated liquid crystal, a mechanically rotating half-waveplate, or a Pockels Cell.
An emerging practice in High Dynamic Range sensors is to use dual simultaneous exposures of different lengths to effectively increase the dynamic range of the sensor. Even rows are exposed at one exposure length and odd rows at another. This is done by using multiple transfer gates and sense nodes. A similar approach can be taken to incorporate different modulations for N rows in the final read out.


The Flow Cytometer Maker lab is intended to be assembled by students under the guidance of an instructor. It starts with an empty carbon fiber breadboard, and the various components of the cytometer (laser, optics, flow cell, etc.) are added in sequence. The instrument is then aligned and connected to its electronics an computer. Fluorescent microspheres are usually used as analysis material, although it can also run cells. By running microspheres, we can visualize the stream on the camera.
The system is constantly being improved. Feedback is very welcome!
Here is the breadboard. It is supported on 3D printed ABS plastic legs, and already has some optical rails mounted on it to facilitate assembly of the other components.
First, we mount the flow cell and light collection optics. These are mounted in a single unit that clamps to the breadboard. The flow cell and optics are both from a BD FACScan flow cytometer, and are coupled together using an optical gel. The fluidic and air lines for the flow cell are already attached.
The air lines of the flow cell are green, the sheath buffer feed line is blue, and the waste line is orange.
Next, we mount the stream camera on the long camera arm protruding from the front of the breadboard. This CCD camera is equipped with a 5X widefield objective to visualize the flow cell capillary channel and stream. The camera has a 488 nm notch filter to exclude laser light and only visualize the stream running fluorescent microspheres.
We now mount the 488 nm laser. This small DPSS unit manufacturered by Vortran Laser is mounted on a heat sink, and used micro optical rail mounts (like most components on the system) to attach to the breadboard.
The laser focusing lens and steering prism are then attached. The lens is a 100 mm focal length achromat taken from a BD Biosciences FACSVantage, and focuses the laser beam on the flow cell and the stream. The steering prism is a flat glass prism that allows the laser beam to be translated up or down and left or right by adjusting the angle of the prism. The prism has both course adjustment (by moving the mount) and fine adjustment, using fine actuators to adjust the position of the beam.
The laser is then turned on, and the camera activated and focused onto the flow cell with the 488 nm notch filter removed. Even if the laser light is not directly hitting the flow cell capillary, the stray light should be enough to visualize the capillary. The laser beam alignment can then be adjusted until the laser is approximately hitting the flow cell capillary.
The walls of the flow cell capillary and the beam are both visible on the camera.
The air pump module is then set up. This unit contains two air pump, two air switches to turn on and off the air pressure, two regulators, and two pressure gauges. The left hand components control pressure for the the sheath air, the right hand components for the sample air.
The air line tubing is colored green, the sheath line is colored blue and the waste line is colored orange. The sheath air line use opaque green tubing, the sample air lines use clear green tubing. Two bottles with caps equipped with two Luer ports are used as sheath and waste containers. The sheath container must be air-tight.
To connect the air and fluidics:
(1) Connect the blue sheath line from the flow cell to the sheath bottle.
(2) Connect the clear green sample air line from the flow cell to the sample air port on the fluidics unit
(3) Connect the orange waste line from the flow cell to the waste bottle.
(4) Connect the opaque green air line from the sheath bottle to the air pump unit.
The air pumps, pressure gauges regulators and pneumatic switches are visible on the front of the console. Power supplies for the air pumps and lasers are also visible.


Aging Eyes and Multifocal Lenses
Many of our 40 to 45 year old patients notice that their eyes have lost the ability to focus up close, especially in low light. Stretching their arms away from their eyes to read a book or restaurant menu is a typical sign of presbyopia.
Presbyopia affects nearly everyone. It happens because as we age the eye’s crystalline lens loses its elasticity, making it more difficult to focus. Fortunately, presbyopia is a very treatable condition.
Reading glasses are often the first solution that comes to mind. The hectic pace of the day makes it easy to be caught without a pair, however. And for some people, the idea of pulling out reading glasses at a restaurant–say during a business lunch or dinner with someone special–isn’t very appealing.
Thankfully, multifocal contact lenses are an option that many people now favor.
One solution we recommend is CooperVision Biofinity® multifocal lenses with Balanced Progressive™Technology. Some contact lenses for presbyopia are like miniature bifocal glasses with near vision correction on the bottom and distance vision correction on top. In other cases, a different lens for each eye–one for distance vision and one for close-up vision.
But Biofinity multifocal lenses are different. This advanced design features multiple zones of vision correction in both lenses, so both of your eyes can see near, far and in-between with excellent clarity. These lenses are naturally wettable and very breathable, so they’re soft, comfortable and healthier for your eyes, too.
*Nothing in this article is to be construed as medical advice, nor is it intended to replace the recommendations of a medical professional. For specific questions, please see your eye care practitioner.


Uni-Fit™ 10W Integrated IP44 Dimmable LED Downlight
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“We use a portable surveillance device,” the soldier said. According to him, the complex, equipped with a thermal imager and a laser rangefinder, is designed to observe and collect information about the area, including the detection of various objects. He can also use the device to record videos.
The interlocutor noted that the complex gives the range and coordinates of the targets. With it, you can “direct and adjust the artillery and our favorite plane.”
The military added that the situation in the Kupyansk sector is now steadily tense. Enemy team movement was noted. This data was transmitted to the artillery, which hit the targets.
Earlier it was reported that the Russian army is training in Ukraine to fire from a low-noise 82mm “Gall” mortar. Due to the lack of flash and sound when fired, as well as the small size of the weapon, she was nicknamed “Saboteur Howitzer”.


Fiber Optic Cabling
FIBER OPTIC SOLUTIONS
Globalcom Technologies is BICSI certified in fiber optic distribution design and installation for a wide range of network applications. We can help you integrate data and telecommunication networks over Fiber Optic Backbone effectively. Our Fiber Optic certifications, extensive experience in Fiber Optic installation, and knowledge of Fiber Optic technologies and standards are key factors in our successful delivery of fiber network solutions. We can deliver the solution that best meets your application needs, now and over the long term.
Globalcom fiber optic services include:
- Design and Installation of Fiber Optic Cabling Systems
- Terminations of Fiber Optic Cable Using the Latest Standards and Products
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- Innerduct, Conduit, and Cable Tray Installation
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Fiber Optic Technology
We have extensive experience working in various complex environments, including:
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In our extensive portfolio you will be able to find mid- and large-size projects Globalcom has had the privilege to work on.
As a premier provider of security systems, voice and data networks, and structured cabling systems, Globalcom Technologies provides single source accountability for all security, voice/data/video, and wireless applications.


Fiber Optic Cables Laying And Maintenance
we are a global market research firm and are seeking experts who can assist us identify key trends and practices in the laying and maintenance of “fiber optic cables” in the us.
List of requirements are given below:
leading vendors (scope - us)
• key suppliers involved in “fiber optic cable” laying and maintenance
o construction companies
• experience (if possible in fiber optic laying)
• industries served & types of construction projects
• innovations & trends in fiber operations and laying process /new methods of construction (prefabricated, modular etc.) /technology etc.
Pricing models (scope - us)
• engagement models/pricing models, contract structures & payment terms while engaging with construction companies during fiber optic cable laying
• cost structures & key drivers
• pricing for installation, deployment & maintenance – standard rates for fiber optic cables per meter
• hypothesis –
o is it possible to engage directly with sub-contractors?
O “prices of smaller sub-contractors are higher than larger players”
industry trends & practices (scope - us)
• what are telecommunication companies doing in terms of pricing model and engagement model?
• best practices from other industries that can be incorporated in the telecom industry?
• negotiation levers while engaging with construction companies for fiber laying process
we would like to engage via phone consult with experts knowledgeable about fiber optic cable laying/construction industry. Ideal candidates should have deep knowledge of industry trends and practices, key suppliers, pricing models, contract structures, best practices etc.
We are looking for a phone consult for a time period of 1-2 hours to discuss all points mentioned above. Kindly drop in a note with your cv/relevant experience in the “fiber optic cable laying/construction” industry, if you are interested to proceed.
thomas+9 Other Responses
I need a fiber optic consultant or optical engineer with expertise in coupling light into single mode fibers, imaging fibers, multimode fibers.+14 Other Responses
I am trying to find a solid core single mode optical fiber with a core refractive index well above or below 1.5 (e.G. Say greater than about 1.7 or less than about 1.3) for a special relativity experiment. Also it would be nice to have attenuation of <3 db/km.
Please don't contact me if you don't know of such a product.
dan wagner+1 Other Responses


Seek Thermal RT-ABAX RevealXR Long Range Thermal Imager Camera, Black
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|I came home from work today to find a package from brianlh, containing the 17-40L I bought from him. I went out back to snap a few test shots, and on a whim I grabbed a 12mm extension tube. After playing with the lens in "normal" shooting mode, I attached the extension tube, set the focus to manual and infinity, and shot a couple wide angle macros:
It's neat to be able to get in tight, but still capture that wide view of the background. Unlike the complete blurring that occurs with a long focal length macro lens, the background remains somewhat recognizable. A very different way to shoot macro.
I'm really liking the 17-40. It's excruciatingly sharp when stopped down, a really nice landscape lens.


Businesses usually require high-speed internet and this is why established businesses should get business fiber optic. Quick uploading and downloading of content requires one to get high-speed internet. Voice services require high-speed internet and this is why businesses should get business fiber optic. When one has high speeds for their internet, they can have cloud services that are essential for a business. Businesses need fast internet so that they can communicate with customers, suppliers, employees etc and this is easily achievable with business fiber optic.
There will be no slow speeds when one is using the internet which can lead to a lot of time wastage for a business that uses business fiber optic. Startup businesses can also benefit when they get business fiber optic from the very beginning. There is an easy collaboration of employees when a business is using business fiber optic because they can be able to respond to each other quickly due to fast speeds.
One can have an advantage over their competitors when they get business fiber optic.
Businesses which want reliable internet can get business fiber optic which is always reliable. Businesses which must have internet to operate need to get a reliable source such as business fiber optic. Another advantage of using business fiber optic is that it is not interrupted easily by power lines as well as high voltage electrical items. When one requires high uptime they should get business fiber optic for their business. Business fiber optic is stable and this makes clients happy with their internet.
Businesses which use business fiber optic do not have to worry about the size of the content that they want to put online. In this day and age when one needs to keep updating their content online, this is very beneficial to businesses. This will ensure a strong online presence in social media platforms and other platforms.
Businesses which use business fiber optic can allow their employees to work remotely because they can be able to access company systems without any problems of speed. When employees can work from any location, they will be happy with their work schedule which allows them some flexibility and this can improve their performance.
Another advantage of getting business fiber optic is because businesses can be able to use video conferencing and interact with clients from different countries. Businesses should get business fiber optic because it cannot easily be hacked since it is a secure network. Businesses can also enjoy a private connection when they get business fiber optic.


This 4-in-1 Laser Tape Measurer is perfect for your work. Our 4-in-1 Laser Tape Measurer can measure distances up to 40 meters, can perform area measurements of walls, floors, etc., can perform volume measurements of rooms, and can even perform Pythagorean measurements. The device features a one-button-ranging system, ensuring easy and quick use. The readings are accurate to .001 meters and show on the device's intelligent digital display for improved visibility. The 4-in-1 Laser Tape Measurer features a built-in rechargeable battery that sustains a charge for up to a week. It is built with high-quality plastic and features a waterproof, dustproof, and drop-proof design. Get work done like a pro with our 4-in-1 Laser Tape Measurer.
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Measures distance, area, volume, and even Pythagorean distances!
The 4-in-1 Laser Tape Measurer gives measurements accurate to .001 units.
The 4-in1 Laser Tape Measurer is light and attaches right to your belt, toolkit, etc.


Eye Surgical treatment has become a mainstream approach of vision improvement, as well as this post will explain the benefits and also drawbacks of 3 various methods being supplied to the medical consumer.
Lasik Eye Surgery
LASIK is the acronym for Laser-Assisted Sitting Keratomileusis as well as is an eye medical system which permanently deals with vision by removing a thin layer of the cornea. This treatment works best on individuals with moderate to high degrees of myopia (nearsightedness), reduced to moderate levels of hyperopia (farsightedness) and astigmatism associated with nearsightedness, and that have thick corneas. It is the most widely known surgical vision correction technique.
Individuals with normal eye sight see things plainly because pictures are brought right into a correct centerpiece by the cornea and also lens of the eye. Ideally, the cornea's curvature is uniformly matched to its size in a regular eye. Individuals with astigmatism, myopia or hyperopia have actually off-and-on shaped corneas, so the objects seen are not concentrated appropriately. LASIK changes corneal shape by specific elimination of corneal cells, and also by doing so corrects the eyes' concentrating power.
There are, nonetheless, risks to LASIK eye surgery.
There is a remote chance of total loss of vision. If this happens, it is typically due to the fact that the person had a pre-existing condition which ought to have precluded the surgical treatment in the first place, such as maternity, cataracts, joint inflammation, diabetes mellitus, glaucoma, or lupus. People with huge pupils are likewise poor candidates for LASIK. Dry eye disorder will certainly be intensified by this procedure.
A couple of individuals complain that they completely see "ghost" pictures, have obscured vision, diminished contrast and poor evening vision. When LASIK was first introduced, 5% of individuals had post-operative complaints; nevertheless, improvements in the procedure have actually created this rate to drop to less compared to 1% if LASIK is executed by skilled experts and also patients are appropriately evaluated prior to surgical treatment. If troubles do occur, they can often be resoved by a retreatment.
FDA has actually approved LASIK laser eye surgical treatment since 1998. While there are a lot of pleased individuals, there are nonetheless no long-term studies about its effects. Recognize the restrictions and the threats of LASIK eye surgical treatment prior to you sigh for the treatment.
Though less well known, these tiny implants can boost vision in people with light to moderate myopia without the threat of long-term eye damage inherent in the tissue elimination method of LASIK. Intacs are semi-circular disks dental implanted in the cornea which extend it to think a flatter form. Though somewhat much less precise than LASIK, they are removeable and also changeable, so if the person has an unexpected over- or under-correction, the implant more helpful hints could be eliminated as well as one more of a various dimension placed to acquire the wanted correction. The implants lie at the special info edge of the cornea, so the central aesthetic location is totally undamaged and intact, and also the stamina of the cornea is undiminished, making it a much better option for pilots as well as those who engage in contact sporting activities where eye injury is an opportunity.
Intacs disagree for extreme myopia and also more than small astigmatism (1.00 diopters), as the cornea can just be stretched so far. If the Intacs are removed, vision returns to its preoperative degree. Aside from vision adjustment, Intacs are additionally used to deal with keratoconus.
Intacs are FDA authorized and also One Decade studies have actually revealed no major troubles with Intacs and very few client grievances; nonetheless, due to the fact that the procedure takes more training than LASIK, there are fewer eye surgical procedure facilities supplying it. Nonetheless, the Intacs website offers a checklist of specialists in each state, also a few in Canada, Europe and also Mexico.
Due to the fact that many people do not want to run the risk of LASIK and also Intacs could not aid those with severe vision issues, intraocular lens implants (IOL) are a new alternative accepted by the FDA in 2004 to fix moderate to serious nearsightedness. The Craftsmen lens, produced by Ophtec, is similar to the type of lens dental implant made use of to recover vision following cataract eye surgical procedure.
The new IOL, called the Craftsmen, is planned for only clients who have 2.5 diopters or less of astigmatism.
The man-made lens does not replace the natural lens, but is inserted in front of it. The major issue located with the implant was the consistent loss of endothelial cells in the corneas of people that received the implants. The endothelium is a layer of cells that line the undersurface of the cornea and are crucial in maintaining the cornea clear. A three-year study revealed a continuous stable loss of endothelial cells of 1.8 percent a year. At this moment, no one can forecast whether this loss will certainly continue at the very same price forever, and even its influence on corneal function.
To minimize long-lasting results of the gadget on the corneal endothelium, the FDA is needing that the new lenses be classified to specify that they should just be dental implanted in clients whose corneal endothelial cells are thick adequate to stand up to small cell loss.
More serious complications were couple of: retinal detachment (0.6%), cataract growth (0.6%), as well as corneal swelling (0.4%). The FDA is needing Ophtec to perform a five-year follow-up study of its dental implant people to much better evaluate the post-surgical incidence of cataract growth, retinal detachment as well as various other ocular conditions.
The Artisan lens is meant to be a permanent implant.Though it could be removed surgically, vision may not constantly return to exactly what it was before getting the lens. Since it does not impact astigmatism, clients with this issue may still call for glasses.


About Holographic Technology
Holographic technology The first step is to use the principle of interference to record the object light wave information, that is, the shooting process:
The other part of the laser as a reference beam shot on the holographic film, and the material beam superposition of interference, the object light waves on the point of the phase and amplitude into space in the space The intensity of the change, so that the use of interference between the fringes between the interval and the object of light all the information recorded.
Recorded in the interference fringed film after the development, fixing and other processing procedures, it becomes a hologram, or holographic photos; the second step is the use of diffraction principle to reproduce the object light wave information, which is the imaging process:
The hologram is like a complex grating. In the case of coherent laser irradiation, a linearly recorded sine-type hologram diffraction light wave generally gives two images, the original image (also called the initial image) and the conjugate image. Reproduce the image three-dimensional sense of strong, with a real visual effect.
Each part of the hologram records the optical information of each point on the object, so in principle it can reproduce the entire part of the original image, through multiple exposure can also be recorded on the same film a number of different images, And can not show each other without interference.


C300 is available with the following packages:
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- $400/day, Body, Z-rig, Rokinon Cine Prime lens kit, (24, 35, 50, 85).
- $600/day, Body, Z-rig, B4 mount and B4 ENG lens (18×7.6 pictured), rods and 2x150wH batteries.


- Can a laser scanner blind you?
- Why do barcode scanners use red light?
- Is it safe to photocopy your face?
- Is scanner light bad for your eyes?
- Do barcode scanners emit radiation?
- What color laser is the most dangerous?
- Can barcode scanners cause cancer?
- What are the symptoms of laser eye damage?
- Are red lasers dangerous?
- Is it bad to look at the copy machine light?
- Are printer scanners dangerous?
- Do laser cutters emit radiation?
- Can a laser damage your eye?
- What class of laser is a barcode scanner?
- How long does it take for a laser to damage your eye?
- Can a Class 3 laser damage your eyes?
- Are Class 4 lasers dangerous?
- Why is it dangerous to shine a laser in someone’s eyes?
Can a laser scanner blind you?
Class 2 and 2M laser barcode scanners are considered SAFE if the beam happens to hit the human eye.
Physical limitations may cause some people the inability to blink quickly, to avert their eyes, or to turn their head away from the laser beam, causing pain and discomfort, or even temporary impairment of vision..
Why do barcode scanners use red light?
Scanners with red light sources are most common. They have the big advantage that the light source can be seen, making it easy to tell where the scanner is “looking”. This makes alignment a lot simpler. You can also get some visual feedback that the scanner is actually working.
Is it safe to photocopy your face?
Very low from a single exposure, says a spokesman for the Health and Safety Executive. “We would not advocate people photocopying their faces but we think it’s extremely unlikely that there would be any long-term damage from a single exposure.” … Eye experts play down the risks of photocopying the face once or twice.
Is scanner light bad for your eyes?
The lasers in handheld scanners emit radiation which can burn your retina due to prolonged exposure, much like staring at the sun for too long. This injury won’t happen to most people, as you’ll instinctively look away from intense light in order to protect your eyes from damage.
Do barcode scanners emit radiation?
Barcode scanners, which have very low emissions, are ‘class 2A’ laser devices. Although they emit some radiation, barcode scanners are generally considered to be a very low risk to food. … But, as food at the checkout is quickly passed by the scanner, it is unlikely to receive much radiation.
What color laser is the most dangerous?
Principle #4: A green laser is more of a visual hazard than an equivalent red or blue laser. The human eye is most sensitive to green light. The chart below shows this more precisely. Wavelengths increase from blue on the left to red on the right.
Can barcode scanners cause cancer?
Barcode scanners use very low energy laser diodes. The only health risk is from directly aiming for the eyes. Even that would take a while, depending on the intensity of the laser. Other than that, you will have to try to tan yourself with a barcode scanner to experience any visible damage to your health.
What are the symptoms of laser eye damage?
Symptoms of a laser burn in the eye include a headache shortly after exposure, excessive watering of the eyes, and sudden appearance of floaters in your vision. Floaters are those swirling distortions that occur randomly in normal vision most often after a blink or when eyes have been closed for a couple of seconds.
Are red lasers dangerous?
Red laser pointers that are “properly labeled” in the 3-5 mW range have not caused eye damage — no retinal damage has been reported — but there are very real concerns. … There are reports that green lasers, improperly imported to the U.S., far exceed safety limits.
Is it bad to look at the copy machine light?
During the process of creating copies, both visible and ultraviolet light emits from the lamp in a photocopier. … While not considered harmful, ultraviolet light emitted from machines may cause eyestrain if you continually look at the light while making copies.
Are printer scanners dangerous?
Scanners and printer packages are marked with radiation harmful to the body. However, this kind of radiation is not very harmful to the human body, and it is far lower than x-ray.
Do laser cutters emit radiation?
Laser cutters are normally fully enclosed systems that prevent laser operation unless the safety interlocked doors are fully closed. They typically contain a carbon dioxide (CO2) laser that produces invisible laser radiation at a wavelength of 10600 nm in the infrared spectrum.
Can a laser damage your eye?
While it is unlikely most lasers used in toys, games, and laser pointers can permanently damage your eyes, it is theoretically possible so caution should be exercised. … Shining a laser pointer in someone’s eye performing certain visual tasks can cause flash blindness and result in an accident.
What class of laser is a barcode scanner?
Laser Hazard ClassesClass FDAClass IECProduct ExamplesIIa, II2, 2Mbar code scannersIIIa3Rlaser pointersIIIb3Blaser light show projectors industrial lasers research lasersIV4laser light show projectors industrial lasers research lasers lasers used to perform LASIK eye surgery1 more row•Mar 7, 2018
How long does it take for a laser to damage your eye?
Laser pointers can put out anywhere between 1 and 5 milliwatts of power, which is enough to damage the retina after 10 seconds of exposure. This can lead to permanent vision loss. That said, it can be very difficult to expose the retina to that much light for that long a time.
Can a Class 3 laser damage your eyes?
Class 3B visible-light lasers are hazardous for eye exposure. They can cause burns to the retina. A person cannot turn away or blink fast enough to prevent retinal eye injury from a nearby Class 3B laser. At the low end, around 5 to 50 milliwatts, a Class 3B laser poses a moderate risk of eye injury.
Are Class 4 lasers dangerous?
Class 4. Class 4 is the highest and most dangerous class of laser, including all lasers that exceed the Class 3B AEL. By definition, a class 4 laser can burn the skin, or cause devastating and permanent eye damage as a result of direct, diffuse or indirect beam viewing.
Why is it dangerous to shine a laser in someone’s eyes?
Why lasers can cause eye damage. … The power density from a 1 milliwatt laser, focused to a point, is brighter than the equivalent area of the sun’s surface. This can cause a detectable change (injury) to the retina, if the laser stays in one spot for a few seconds.


The Hyperion MRI Digital Projection System features a native resolution of 1920 x 1080 (1080p) and synchronized image frame rate with continuous monitoring for optimum presentation and timing of fMRI experiments. The system uses Digital Light Processing® (DLP) technology that provides microsecond pixel rise times, outstanding contrast with all-digital fiber optic control that allows you to project crystal clear, sharp images. The Hyperion MRI Digital Projection System has been validated for use in 1.5T, 3T, and 7T MRI environments.
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* High resolution, lenticular pitch rear projection screen and magnet compatible stand for high quality image reproduction (6 point text is readable)
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- The world’s darkest material – capable of absorbing 99.96 per cent of ultraviolet, visible and infrared light – is now available in a spray-on form, which can make any 3D object look like a flat black void.The material, called Vantablack, was first created by researchers in 2014.
- Since its initial development, researchers have increased the material’s blackness.
- The material was so black no spectrometer was able to measure how much light Vantablack absorbs, according to the researchers.
- The new variation, known as Vantablack S-VIS, is available in a spray-on form that blocks 99.8 per cent of ultraviolet, visible and infrared light – enough to make an otherwise detailed 3D object appear as a flat black void.
- It is not a paint, pigment or fabric, but a special coating designed to achieve a near total lack of reflectance, according to Surrey NanoSystems, the UK-based company that produces Vantablack.
- Vantablack achieves its supreme blackness through millions of carbon nanotubes.
- Each nanotube of the coating is around 20 nanometres in diameter – about 3,500 times smaller than the width of a human hair – and around 14 microns to 50 microns long. This amounts to about one billion nanotubes on a surface area of one centimetre square. When light hits this nanotube “forest,” it enters the microscopic spaces amid the tubes and is rapidly absorbed as it bounces between them. The almost perfectly black, light-void surface is created because of the material’s near-total lack of reflectance.
- Vantablack may have a diverse range of applications including high-performance infrared cameras, sensors, scientific instruments, satellite-borne calibration sources, and even to provide a unique aesthetic effect in certain high-end luxury products.
- Its ability to absorb light energy and convert it to heat is also of relevance in solar power development.
Source: Indian Express


(Forschungsverbund Berlin e.V. - Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy)
Max-Born-Str. 2a, 12489 Berlin, Germany
Contact person for housing, travel, etc.
Email: becker (at) mbi-berlin.de
Sabine Schulz (Human Resources)
Email: sschulz (at) mbi-berlin.de
MBI theory group – http://staff.mbi-berlin.de/mbijtheory/
About the Institution
The Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (MBI) conducts basic research in the field of nonlinear optics and in ultrafast dynamics of the interaction of laser light with matter, and pursues applications that emerge from this research. Using lasers and laser-driven short pulse light sources, experiments are performed in the femtosecond time range (1 femtosecond = 1 millionth of a billionth of a second) and at extremely high light intensities (1020 watts per square centimeter).
The research program focuses on optically induced nonlinear phenomena and the monitoring and control of ultrafast dynamics. Such studies provide direct insight into microscopic processes and structures that determine the physical properties of atoms, molecules, plasmas, solids and surfaces. Current examples include the observation of ultrafast structural changes in crystals with X-ray pulses and the acceleration of protons and ions in extremely high laser fields.
About the Groupleader
Dr. Olga Smirnova
Email: smirnova (at) mbi-berlin.de
- Imaging and controlling correlated electron dynamics in molecules.
- Time- and space-resolved imaging and control of charge migration, electron rearrangement, autoionization, coupling of the electronic and vibrational motions in molecules.
- Understand the role of attosecond coherent electron dynamics in chemical reactivity
Main research directions:
- HHG spectroscopy
- Photoelectron spectroscopy
- XUV pump -IR probe imaging and control schemes
- Theory of multi-electron systems in strong fields
2. Senior Scientist:
Dr. Foudhil Bouakline
Email: bouaklin (at) mbi-berlin.de
Coupled electronic-nuclear dynamics in strong laser fields
My current project is about the effect of strong laser fields on nuclear dynamics at conical intersections.
2014-Present: Experienced researcher, Max Born Institute, Berlin, Germany
2012-2014: Postdoctoral researcher, Max Born Institute, Berlin, Germany
2010-2012: Alexander von Humboldt postdoctoral fellow, University of Potsdam, Germany
2006-2009: Postdoctoral researcher, University of Cambridge, UK
2002-2006: PhD in Atomic and Molecular Physics, Université Pierre et Marie Curie, Paris, France
2000-2002: MSc in Atomic and Molecular Physics, Université Pierre et Marie Curie, Paris, France
2000: BSc in Physics, Université de Béjaïa, Algeria
Theoretical Atomic and Molecular Physics


The Cauchy spectrum node generates an index of refraction that changes based on the wavelength: https://en.wikipedia.org/wiki/Cauchy's_equation
For materials like glass, or gems, using a fixed index of refraction, like for example 1.5, independent on the wavelength, is non sufficient to simulate some effects such as dispersion. The Cauchy spectrum node generates an index of refraction that varies based on the wavelength according to the above Cauchy Equation, producing much more realistic results.
To change the color of the gem, the best way is to adjust the absorption of the dielectric medium. As light travels inside the gem, light is absorbed depending on this absorption parameter. So if you set the absorption parameter to blue, all the blue frequency of light will be absorbed, and the gem will look yellow, because none of the red and green frequencies will be absorbed. If you set the absorption parameter to black, the gem will look white, because none of the frequencies will be absorbed. Please also note that the absorption parameter is on dependent on the size of the gem, because the longer the distance the light travels inside the gem, the more light will be absorbed. For this reason, you might want to adjust the scale of the color parameter to values much bigger than one.
For the spectrum files, please refer to the reference in Help->View Help and look for the “Spectrum(spd)” files reference. There is a explanation with examples on how to create spd spectrum files. You can use the nodes created in this way as input for the absorption parameter of the dielectric medium. If you use measured data from real life crystals you will get very realistic results. You can find online the tabulated data for many common crystals, for example here: http://minerals.gps.caltech.edu/FILES/Visible/Index.html


Best CCTV Installation Service In UAE
Dome CCTV Camera
The camera gets its name because of its dome-shaped design. The dome shape makes it difficult to find out which direction the camera is pointing. This tricks the offenders from carrying any bad activities.
Some dome cameras are integrated with Infrared LED’s to get better footage at low lights.
Benefits of DOME CCTV installation
- Provides 360-degree layout view
- Endurance towards damage, easy to install & cost-effective
- Installed in retail shops and office cabins
Day/Night CCTV camera
Day and Night cameras are built to cope with varying light conditions; they don’t need IR illuminators to operate in dark.
Their extra sensitive imaging clips help capture videos in glare, direct sunlight, reflection and in poor lights.
Benefits of Day/Night CCTV installation
- Used outdoors in low lit areas requiring 24/7 surveillance
Ex: Manufacturing industry outdoors
C-mount CCTV Camera
The c-mount camera comes with a detachable lens to serve different needs. Built just like a bullet camera it additionally allows you to use special lenses for covering distance beyond 40ft.
You can use the varifocal lens to get extra benefits.
Benefits of C-mount CCTV installation
- Its stand out visibility scares lawbreakers
- Can cover longer distances over 40ft
Infrared Night vision CCTV camera
IR night vision cameras can record footage at pitch-black conditions (Absolute darkness). IR LEDs Surrounding the lens illuminates dark surfaces and take the IR Reflections on objects to generate video.
These videos are black and white in nature. These cameras are priced quite high compared to day & night CCTV Cameras.
Benefits of IR Night vision CCTV installation
- They also provide clear images during daytime even in the presence of dust, smoke and fog
- Installed in places where solid recording is needed 24/7
Bullet CCTV Camera
These cylindrical-shaped cameras are known for long-distance viewing. Covered by protective case, It is also resistant to water, dust and dirt.
This makes it ideal for outdoor use.
It comes with fixed or varifocal lens following your requirement. You can adjust lens focus for broader and narrower field view.
Benefits of Bullet CCTV installation
- Long-range surveillance (40ft)
- IR night vision
- Easy to install and affordable
HD CCTV Camera
Prominently known for their picture quality, HD CCTV cameras can deliver clean & crisp footages from 720p to 4K resolution.
CCTV companies have installed HD cameras in all Dubai banks for greater safety.
Benefits of HD CCTV installation
- Accurate recognition can be possible hence installed at the places prone to high risk of theft or crime. Ex: Banks & Casinos
Pan Tilt & Zoom (PTZ) CCTV Camera
The camera can move left or right (Pan), Up or down (Tilt) and can be Zoomed in and out. Hence the name PTZ camera.
This surveillance system is live monitored by a security person.
Benefits of PTZ CCTV installation
- 360-degree field view and better zooming
- Used in places like stadiums, supermarkets & warehouses to protect valuable things
[Do you know: Almost all CCTV installed in Dubai museums are PTZ Cameras]
Network/IP CCTV Camera
IP cameras are the trending and the most preferred cameras by CCTV installation companies in Dubai. They use NVR instead of DVR like in analog cameras.
NVR stores and sends footages over the network to view from anywhere across the world.
IP cameras are costlier than analog cameras due to their wide range of benefits.
Benefits of IP CCTV installation
- Footage can be viewed from anywhere across the globe while you have a network connection
- Advanced features like facial detection, number plate recognition & Audio-video recording
- Easy to set up and low maintenance
- Helpful for owners who often stay away from the site
Wireless CCTV camera
They are usually IP Cameras, Here the captured recording is processed in the camera itself and stored in NVR or Cloud.
These footages will be available for remote viewing.
Benefits of Wireless CCTV installation
- Blends into different areas of installation. Gives tidy and premium look for positioned areas
- Easy setup and low maintenance
- Can be installed in the areas which need spotless and clean presentation like star hotels


Security Camera Coverage Calculator. It cannot substitute professional advice from technical experts. 0.50 x 1.70 m visualization of changes are visible in field of view of video analytics only.
Use our dvr/nvr hard drive calculator to determine what size hard drive your system needs to achieve your desired record time. However, even 720p starts becoming overkill and unless the camera can see through walls, 1080p. Note that different image resolution will.
It Is Very Important To Use The Right Lens For Desired Field Of View;
We also have a wide angle lens fov calculator which provides the field of. I'm trying to make a dynamic block to represent the camera fov coverage for cctv. I'd like a grip on the block to adjust the fov to be wider or narrower, a grip to lengthen or shorten the area, and then another grip to rotate the whole block.
I've Figured Out How To Do Each Of These 3 Things Using Constraints, But When They.
If you want, you can make up a set of coverage indicators for different camera /lens combinations. It enables easy calculation of an appropriate lens focal length, camera viewing angle, ip camera bandwith, storage capacity for records archiving and of other camera system parameters. Camera looks above the horizon and will not give an optimal result.
Due To This Invention, The Surveillance System Has Become More Reliable And Secure.
A home security camera usually can see in a range between 0 to 70 feet depending on the resolution, sensor and lens it's using. Cctv calculator is a tool designated for camera system basic parameters determination and testing. Now you can view the cctv camera videos through a network from any location.
Note That Different Image Resolution Will.
Field of view is an angle which depends on the focal length and sensor size, but it also computes dimensional field of view sizes (width, height, or diagonal fields) at some specific distance, like at the subject distance, and another, like at a background distance. W (horizontal width) = (distance) * 3.2 mm / (lens focal length) where 3.2 mm is the horizontal size of 1/4″ cctv sensor (4.8 mm for 1/3″ sensor). This calculator provides the camera's field of view based on an image sensor and a lens.
About Ultimate Security How To Use This Tool Enter The Distance To The Object In The Top Field.


2 Things You Do Definitely Not Know Referring To LASIK Eye Surgical TreatmentThe eye can be analyzed with relative ease as to both its function and its structure. A functional evaluation consists of the ability to relocate the orbit and the reaction of the pupil to light and accommodation.
The function of the eye might be checked in several ways. The patient may be asked to determine illuminated letter or objects of varying sizes on what is referred to as the Snellen chart.
Conversely, the evaluation of the structural part of the eye may be made in several ways. Stress within the eyeball is determined by a "tonometer." In certain illness, especially in glaucoma, the tension in the eyeball is increased noticeably.
It should be well remembered that a client with an eye problem might have other problems. Typically other physical conditions are main and affect the eye as a effect. The appearance of the eye can inform the physician and the patient to problems in some disruptions of other parts of the body even before other signs present themselves.
As a result, one's reliance on sight is emphasized when one deals with a possible or temporary long-term loss of this important sense. Hence, when corrective procedures are looked for, particular kinds of vision correction such as contact lenses or spectacles are prescribed.
On the other hand, some people are bothered with the reality that they have some framed lenses or contact lenses in front of their eyes.
For this reason, advanced surgeries were developed to motivate decreased utilization of contact lenses or glasses. One of which is the now popular LASIK eye surgery.
Basically, LASIK eye surgery is the short-term for "Laser-Assisted In Situ Keratomileusis." Like its tangible equivalent, LASIK eye surgical treatment is another form of vision correction. The only distinction is that with this type of surgery, one's vision is corrected permanently.
With LASIK eye surgical treatment, the refractive errors in the cornea are completely changed. This can be done using an "excimer laser."
The main function of this surgery is to check that develop a threadlike, rounded "flap" in the cornea utilizing a blade known as "microkeratome." In a series of unfolding and laser processing, the important link cornea is lastly reformed, enabling much better the eye to direct more light into the retina.
Popularity vs. Disadvantages
Amidst the growing appeal of LASIK eye surgical treatment, there are still disadvantages that people need to understand. Most likely, the main reason this type of eye surgery has become well accepted is because many of its cases had actually succeeded.
In spite of its success, there are still some drawbacks. Here is the list:
1. It is an operation used to the most delicate part of the eye
Because LASIK eye surgery includes the operation of the retina, which is among the most delicate parts of the eye, many people say that the operation can be very dangerous.
Simply puts, a simple mistake could almost trigger an person's lifetime blindness. Hence, it is crucial to think about lots of factors before deciding whether LASIK eye surgery is the best restorative step one has to undergo.
2. It is not a perfect procedure
LASIK eye surgery might remedy your vision but it does not necessarily indicate that it can provide you a ideal vision. Even if analytical reports show that 70% of the patients might have 20/20 vision, this does not always imply they have ideal vision.
Offered all these things, it can be deduced that, in spite of the appeal of the operation, LASIK may not constantly be the ideal eye surgical treatment the way the majority of people see it
Alternatively, the examination of the structural part of the eye might be made in a number of methods. It should be well kept in mind that a client with an eye issue might have other problems. Typically other physical conditions are main and affect the eye as a consequence. The appearance of the eye can signal the physician and the patient to troubles in some disruptions of other parts of the body even prior to other symptoms present themselves.
Like its tangible counterpart, LASIK eye surgery is another type of vision correction.


TricoGlam Home is a new, first of its kind red LED light wavelengths designed to more effectively treat hair loss and other hair and scalp problems. The TricoGlam Home is the perfect compliment to a hair and scalp treatment routine.
Laser versus LED
Until now LLLT devices have only used laser diodes that are pinpointed to one area of the scalp and hair. Although the laser diodes are effective, the introduction of the red LED diodes allows for a more dispersed and fuller coverage of the hair and scalp without sacrificing the effectiveness of the light. Ultimately providing a better LLLT solution for your hair and scalp.


The study at Michigan University proves that LED can be useful to cool another device such as computers. Future microprocessors will be able to be more potent as it will be able to remove the heat it emits while being used. This will, for sure, bring a change in people as they will switch to only LED lights in the future. Running an LED consumes less energy and has a longer life span than other light sources. Therefore, there are various reasons for choosing an LED light. As these lights are versatile, they need very little maintenance. Moreover, it saves electricity that helps to go green and, in turn, helps to protect the environment.
Why Are People Shifting From Normal Lights To LED?
The best thing, however, about LED lights is that it saves electricity and lasts quite long. Studies prove that a right Bulb can last for 50 thousand hours. That means that it can last approximately for about 17 years. If one is working continuously for 8 hours every day, then to there is no need to change the bulb in any case. Moreover, studies also prove that an LED light saves almost 95% of the power. Nowadays, there is dull yellow and fluorescent light available in the market that does not feel hot even when kept near the body. Hence, it is everyone`s responsibility to protect the environment, and using LED lights is one such step we can take.
While using a computer in the night, one can connect this astronaut shape LED lamp with the OTG cables. Moreover, the light is sufficient to work late at night without disturbing the other person in the room. However, this lamp is an ideal gifting option for friends and cousins.
The light consumes minimal charge and low energy. One needs to plug the port with the laptop to switch the lamp. The cord of the lamp is flexible enough to turn in any direction. Moreover, it is a perfect gifting option for friends and youngsters in the family.
ABS plastic material is used to make these LED lamps. The content is strong enough to make the light durable and long-lasting. However, the dimensions of the lamp are 804030 mm. Moreover, it consumes a voltage of 5 watts.
This mini USB powered lamp is ideal for emergencies and for traveling outdoors. Especially when out for hiking and trekking. The USB light is made with flexible tubes that one can mold and twist in any direction. These environment-friendly mini lights are perfect power-saving gadgets.
However, these lights are available in 3 different sizes, and with two various light forms, warm glow and bright yellow light. One can easily plug the light into a 5V USB port and is perfect for any computer and laptops. The light source is, however, LED and is available in 3 LEDs and 8 LEDs. Moreover, this gadget consumes a power of 5 Volts only.


DJI HD Gimbal Camera Phantom 3 Advanced Part6
Imagine amazing, immersive footage at your fingertips. Imagine capturing content fit for the big screen, with crisp images, beautiful resolution, and vivid colors. With an integrated, stabilized camera, your Phantom 3 Professional/Advanced brings your imagination to life.
The Phantom 3 Professional comes with a 4K camera, while the Phantom 3 Advanced shoots 1080p HD.
Attenzione: Ultimi articoli in magazzino!
Disponibilità: Pronta consegna


High Pressure Injection Chamber
Tailor-made fuels are examined in the high pressure injection chamber. The chamber can be operated with gas pressures of up to 150 bar and temperatures up to 1000 K. Measurements in short intervals of time are possible through constant perfusion. With the help of optical procedures like Mie-Scattering or Schlieren measurement technique, the injection performance can be analyzed.
The chamber is equipped with 3 quartz windows with a diameter of 127 mm. Single injection as well as multiple injections with variable injection amounts are shown. For centered injectors, a spray length of 60 mm can be visualized, for eccentrically mounted injectors a spray length of up to 100 mm is possible.


In order to provide its customers with high quality products, which always meet the declared specifications and customer requirements, Washers Italia makes use of latest-generation machinery, specific for testing and inspection through a system of image dimension measurement that permits:
measuring a large number of objects in a single operation
measuring height and depth at the same time
also measuring large-size targets
Thanks to speed of measurement and high precision, this type of machinery makes it possible to optimize the test process, cutting costs and thus providing customers with top-quality products at very competitive prices.
Our machinery is able to measure the main parameters which ensure the products correspond to the declared specifications:
measurement of distance between lines
setting a tolerance
measuring the diameter
measuring by means of intersection
it also permits saving and comparing the results obtained during each control operation, to maintain high quality standards.
Washers Italia has always paid close attention to testing its products
and, over the years, has managed and implemented this corporate sector,
equipping itself with machinery able to upgrade and automate product control


What is the advantage of machine tool polishing?
Machine based polishing is a precision and deterministic process: once you achieved high polishing quality, you can routinely repeat it. That is not a case for manual polishing with its hand-defined, non-deterministic nature.
What is the advantage of super polishing ?
When super polished quality is achieved, the surface laser damage threshold equals to the bulk damage threshold and surface roughness is extremely small.
Which coating design is preferable for extra cavity tripling ?
We recommend high damage threshold triple antireflection coating on input side and thin single wave antireflection coating on output side of LBO “
What is the advantage of IBS coatings?
Ion beam sputtering (IBS) offers high packing density, low defect and low absorption films.
Why ion beam pre-cleaning is important?
Ion Beam pre-cleaning allows removing polishing re-deposition layer that is generated by superpolishing process.There is a misconception that superpolishing completely removes the subsurface damage layer. On the surface there is always a so-called polishing re-deposition layer containing traces of both substrate and polishing materials. Completely remove the redeposit can only be a dry ion milling such as Ion Beam Sputter cleaning.


PA01. Laser Crystal Cube - 3D - "Matreshka" 1.5"
Height is 1.5", Length is 1.1" Width is 1.1". Produced by the latest advance technology.
This is solid cube. Inside is a 3D etched by latest laser technology. This laser technology is based on penetration of the laser beam inside crystal cube on certain distance and small explosions inside cube. Each explosion is a dot. All pictures consist of sets of dots. Cube is transparent.


If you are a person who has tried wearing contact lenses without success, then you may want to check out scleral lenses. This type of contact lens proves to be a more comfortable and effective alternative to traditional contact lenses. Now, more people can see more clearly without having to depend on glasses or suffer through their vision issues.
Current estimates show that over a million Americans have been diagnosed with myopia or shortsightedness. This means that objects that are further away are blurry, while objects that are closer can be clearly seen. Due to the seemingly regular occurrence of myopia, many patients feel that it really isn’t a big deal and that eventually, most people will have the condition.


Event Date : 04/09/2019
Event Topic : optoelectronic ecosystem, optical communications, data center, infrared applications, laser technologies
Start Date : 04/09/2019
End Date : 07/09/2019
Event Location : Shenzhen Convention & Exhibition Center
Country : China
City : GuangZhou
CIOE 2019 Infrared Applications Expo is the first as well as the only professional infrared exhibition in China. The event gathers nearly all the global leading brands in this industry such as Newport, Thorlabs, Thales, Flir, Ulis, PI, SAT, Guide Infrared, DALI, NVG, Magnity, and Suruga Seiki. Latest infrared device and systems, infrared applications, and infrared imaging technologies will be displayed on-site. The event is also the platform where could get to know latest infrared application in civil market, such as building automation, automotive, mobile phones, service robotics, consumers, medical and drones.


Exciton Migration and Photo-Induced Degradation of MEH-PPV Organic Semiconductor in Solutions and Thin Films
Abstract: The study of MEH-PPV, Poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene], has been of great interest for its semiconducting properties, leading to the practical applications of creating organic light emitting diodes (OLED) and solar cell devices. This research is focused on the study of the mechanisms responsible for the photoluminescent (PL) degradation of MEH-PPV in both solutions and thin films. The PL spectrum of samples was collected using time-resolved optical spectroscopy along with the absorbance spectrum using UV-Vis spectroscopy as samples were degraded by 447 nm laser beam excitation. A blue shift was observed in the PL and absorbance spectra of MEH-PPV. The blue shift is more apparent from the thin film samples than those in solution. This blue shift in spectra is attributed to the degradation of low level exciton energy states causing the photo-generated excitons to reach higher energy states before radiative recombination.
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