A good lens is a lens that adapts to your vision and that suits the use you make of it. Whether you’re in front of a computer all day, outside or in a brightly lit place, a number of parameters should be taken into consideration so that you choose the right lenses for your activities. At Greiche & Scaff, we’re there to advise you.
There are four main criteria you should consider before choosing your lenses :
The materials (glass, plastic)
The type of lenses (unifocal, bifocal or progressive)
The treatments (anti-reflective, polarized, etc.)
The tints (grey, yellow, etc.)
Plastic :Lenses made of plastic (or, more precisely, a resin known as CR-39) are much more shock-resistant, more lightweight and tend to fog up less. They also absorb ultra-violet rays. But the surface of this type of lens scratches easily; adding an anti-scratch treatment is advised.
Polycarbonate :Lenses made from this plastic are shock-resistant and, though thinner than glass or plastic, are the most resistant lenses of all. Because it’s a plastic that’s quite soft, it scratches easily; as with plastic lenses, adding an anti-scratch treatment is advised. These lens are recommended for athletes, children or in cases where ocular protection is critical.
Glass : This was the first material used to manufacture lenses. Very fragile, prone to fracture and virtually unresisting to impact, the glass is subject to a tempering process to make it more resistant, which also makes it heavier. Today, glass is used in lenses much less frequently.
Single vision or unifocal lenses : This lens provides correction only for a given distance. This means that the optical power is the same at every point on the lens’s surface.
Double vision or bifocal lenses : This type of lens is used when a person needs two different corrections. The upper surface of the lens corrects distance vision, and the lower, near vision.
Progressive vision lenses :Progressive optical lenses fulfil the same function as double optical lenses, but use a new type of glass where the boundary line between lens powers is invisible. The result? A much more aesthetically pleasing pair of glasses, and a more functional one, too, because it allows for more seamless vision, and vision in intermediate zones.
Anti-scratch treatment : This makes the lens harder and more resistant and, most importantly, scratch-proof. This is achieved through treatment by tempering, by centrifugal application, directly during the moulding process or by vacuum evaporation.
Anti-reflective treatment : Reflections on a lens can create so-called ghost images made up of glare and concentric circles. These obstruct vision and can be annoying. Anti-reflective treatments considerably reduce these effects and increase the amount of light passing through the lens.
Transitions® Lenses: These are lenses that darken on exposure to specific types of light, most commonly ultraviolet (UV) radiation. Once the light source is removed (for example by walking indoors), the lenses will gradually return to their clear state. They automatically adjust from clear to dark and every shade in between .Transitions® adaptive lenses are the #1 eyecare professional-recommended photochromic lenses worldwide. Everyday lens options include new Transitions® Signature™ lenses, the most responsive lens with full indoor clarity; Transitions® XTRActive® lenses which provide superior darkness outdoors; and the revolutionary Transitions® Vantage™ lenses, the first and only photochromic lenses to darken and polarize outdoors. Transitions Optical’s performance sunwear line includes a range of products customized in partnership with other best-in-class brands. Understanding that the right equipment can provide an advantage, the products are all designed to improve depth perception, clarify colour and increase contrast for specific outdoor activities.reflective light is partially polarized with a filter.
Ultra-violet treatment : True to their name, these lenses are capable of absorbing and blocking ultra-violet rays, which are dangerous for the eyes.
These types of lenses are also known as absorbing lenses. Wearers can choose the intensity of the tint for more light transmission, or less.
Grey tint : This is the most popular tint for sun protection because it doesn’t change the natural viewing of colours.
Yellow tint : Yellow absorbs blue light and can be useful for reducing glare from the sky, for example. It also increases contrasts at nightfall.
Green tint : Green absorbs infrared and ultra-violet rays well and is widely used in the military.
Brown tint : Brown is often used in sunglasses. Like yellow, it absorbs blue light.
Pink tint : Pink is used in situations where indoor lighting is uncomfortable, such as fluorescent lighting and brightly lit work environments. It is often used by people who have had a cataract operation.


Samyang have a number of relatively-affordable ultra-wide-angle lenses. This review is about the 14mm f/2.8 intended for full-frame cameras, but much of it applies equally to the equivalent 10mm f/2.8 for DX / APS-C cameras. Performance of the two lenses is similar according to reviews I've read.
Side note: what is "normal", "wide-angle" and "ultra-wide-angle"
"Normal" or "Standard" lenses have an angle of view of 40-60º, which tends to have a natural appearance with many subjects. This corresponds to a focal length of 35-60mm for full frame / 35mm cameras, or 25-40mm for DX / APS-C cameras. A "normal" lens gives approximately the same sense of perspective as the human eye. "Wide-angle" is typically to describe a focal length of 24-35mm for full-frame, or 16-25mm for DX / APS-C. Wide-angle lenses are good for architecture and landscapes, but tend to make pictures of people look unnatural, as the photographer has to be rather close to the subject. Typical zooms lenses bundled with DSLR cameras cover the range of focal length from wide-angle through "normal", usually to medium long focus (i.e. greater focal length than "normal").
Ultra-wide-angle is anything below about 24mm for full-frame or 15mm for DX / APS-C. These lenses have an enormously wide angle of view - perhaps 115º - which is great for some subjects such as landscapes or interiors of buildings, but can be unnatural and even disturbing for other subjects. For example, an ultra-wide does not make a great portrait lens:
These images above are taken with a full-frame camera for which an 85mm or perhaps 50mm lens might be appropriate for portraits.
The two Samyang lenses reviewed here typically cost £270-300 (the Nikon fit 10mm is just over £300), which is a tiny fraction of the price of most ultra-wides. The sharpness and chromatic aberration (CA) are very good at the centre, and fairly good at the edge (better when stopped down a bit). To quote the photozone review (listed at the bottom): "the Samyang produced nothing short of outstanding resolution figures for a lens in this class". For both sharpness and CA they are as good as some much more expensive fixed-focus ultra-wides, and better than most ultra-wide zooms. However there are trade-offs:
- Manual focus only. This is not a severe problem, as ultra-wides have a large depth-of-field, so focus often isn't critical except for very close subjects.
- Fixed focal length. You expect a good quality zoom at this price?
- Significant geometric (barrel) distortion and vignetting (the latter mainly at wide aperture). Surprisingly, even these aren't as serious as one might think. Many post processing software packages (including Lightroom and Photoshop) include lens correction profiles that can correct the distortion and vignetting almost completely.
- Some reviewers have reported getting "bad copies" of these lenses. Perhaps the quality control isn't perfect for Samyang lenses; always best to take and check some images after purchasing any lens, and return a lens that isn't up to snuff.
Here's an example showing the distortion, and the same image with the lens correction profile applied:
The Lightroom lens correction profile corrects both the barrel distortion and the vignetting (dark corners of the uncorrected image). Notice that the correction loses very little at the edges. With some lenses, the correction distorts the shape so that it has to be cropped, losing significant areas around the edge.
Even uncorrected, the goemetric distortion is hardly noticeable unless there are lines parallel to the edges. The sloping verticals left and right in these images of Market Hill are perspective distortion (not lens distortion) as I was pointing the camera down towards the car rear light.
These Samyang lenses have such a wide angle of view that they can be tricky to use in sunlight: point one way and the sun is in the image, point the other way and the photographer's shadow is in the image! Yep, that's my shadow bottom-right in the Market Hill shots above.
Here's one into the light:
In this one the sun was in the picture until I cropped some from the top.
Landscapes can also benefit from ultra-wides: I managed to see the Northern Lights recently, and they filled the whole sky:
Here are some reviews that I found useful, first for the 14mm:
Ken Rockwell also wrote a review that suggested to me that he hadn't actually used the lens, as some of his comments were nonsense.
For the 10mm lens:
The 10mm lens has very slightly more barrel distortion, but has a more modern anti-flare coating.
Overall: good lenses, especially if you use post-processing software that has lens correction profiles. Very good value.


If you’re looking for an entry-level interchangeable lens camera, the Canon EOS M50 Mark II is the camera for you. This camera has 24.1 megapixels and is commonly referred to as the EOS Kiss M2 in Japan. It features a 3.5-inch LCD screen and a simple, yet effective, interface. In addition, it offers a wireless remote and Bluetooth for easy connecting with compatible devices.
The Canon EOS M50 Mark II provides a range of image quality settings, including JPEG and RAW. It also lets you choose which file format you prefer for better file size and image quality. There’s also an in-camera JPG file format, which uses the Standard Picture Style and default settings. Both formats have their advantages and drawbacks, but the M50’s Jpegs look much more pleasing than its raw files.
ISO performance is very good on the Canon M50, and it can reach ISO 51,200. The noise results aren’t particularly impressive, but they aren’t terrible. If you’re planning to use the camera in this range, be aware that the camera’s dynamic range is quite limited. As a result, it’s not advisable to shoot at high ISO levels.
The Canon M50 II also offers many video recording options, including manual exposure control and Time-Lapse Movie creation. The camera’s LCD monitor can be rotated up to 180 degrees for better viewing angles. It also supports touch gestures. The Canon M50 II’s video recording capabilities make it ideal for vloggers and remote workers.
The Canon M50 II has a simple interface. You’ll have access to many controls through the touchscreen and via the up navigation key. You can also adjust exposure using the touchscreen or control dial. The M50 II also features built-in Wi-Fi and Bluetooth.
When it comes to autofocus, the Canon M50 Mark II offers a combination of phase detection and contrast detection pixels. This means that it works well when shooting photos and videos of fast-moving subjects. Its focusing system is also reasonably accurate and fast. Although the camera does not support 4K resolution, its autofocus is good enough for entry-level photographers.
Another feature that sets the Canon M50 Mark II apart from many other compact cameras is the addition of eye tracking. This feature can now be toggled on and off through the Info button in Face Tracking AF mode. The previous model did not feature eye tracking and was unable to track the subject’s eyes in portrait mode. The M50 also features a 3.5mm microphone port and Wi-Fi connectivity.
The M50 II has Bluetooth connectivity, which means you can connect it to your smartphone or tablet via Wi-Fi. It can also be controlled by the Canon BR-E1 Bluetooth remote. The camera also features an OLED electronic viewfinder. This is a big advantage for outdoor photography, as it eliminates problems caused by harsh light.
The menu system on the Canon M50 Mark II is easy to use. It has tabbed menus and a “My Menu” option that makes it easier to use. It also offers customizable buttons, which means you can easily change your most-used settings.
The Canon M50 mark II is a digital camera with a compact size and a powerful video recording capability. The M50 was announced by Canon on February 26, 2018, and it went on sale three days later. It features a 3-inch LCD touchscreen and an optical image stabilization system for improved image quality.
The M50 II is equipped with a vari-angle LCD touchscreen, a flippy screen, and a movie self-timer that lets you get in position and press the video record button. The camera also supports vertical shooting, a feature that may prove useful for remote workers and vloggers.
The Canon M50 Mark II uses an EF-M mount, which allows it to use a reasonably wide range of lenses. Its telephoto lens is a good choice for vlogging. Its lens range is 55-200mm, which is suitable for most video projects.
Although the Canon M50 II lacks a built-in lens stabilization system, it does a great job of stabilizing 4K images. It can also use an EF-M to EF adapter to use standard Canon glass. The camera is also sturdy and has good physical buttons. However, the M50 Mark II’s one big drawback is that it doesn’t have Log shooting capability. In order to shoot in Log mode, you need to select one of Canon’s color profiles. This limitation may be a deal-breaker for some filmmakers.
As an added bonus, the M50 Mark II also doubles as a high-quality webcam. It can be connected via USB-C cable to your laptop and is compatible with various video-conferencing services, including Skype. The camera also includes a 3.5mm microphone input for external microphones. Popular external microphones include Rode wireless lavalier mics.
The Canon M50 Mark II is a mid-level interchangeable lens camera that can take images up to 24.1 megapixels. This camera is marketed as an entry-level camera for those who do not need professional photo equipment. It is also known as the EOS Kiss M2 in Japan.
The camera is designed to be a versatile mid-level interchangeable lens camera, with the ability to shoot in RAW format. This means that it can be used for a variety of photographic applications, from self-portraits to group shots. This camera will also appeal to vloggers and video creators in a single-person setup.
The design is aesthetically pleasing. It is compact and ergonomic, with a rounded design throughout most of the camera. There are no sharp edges or corners on the body, which is a pleasant surprise for most users. Another nice feature is the built-in Wi-Fi and Bluetooth. These options make this camera more convenient for interacting with your smartphone.
The Canon M50 II features a touchscreen LCD for viewing pictures and video. The camera is also capable of streaming video to YouTube directly. However, you must have a Wi-Fi connection in order to stream video from the camera.
Image circle size
The Canon M50 Mark II is the successor to the award-winning EOS M50. With the growing appetite for content around the world, Canon has stepped up its game with this camera. The demand for content creators is on the rise and shows no signs of slowing down. As a result, more people are exploring hobbies and developing new skills.
The Canon M50 Mark II offers a 35mm equivalent lens, making it an excellent choice for low-light situations. Its stepping motor delivers accurate autofocus functionality and a smooth video shooting experience. It also reduces the chance of blurry results when shooting in low-light situations. This camera is also compatible with a wide range of lenses and is a great alternative for pros and hobbyists.
The Canon M50 mark II camera is an entry-level mid-range interchangeable-lens camera, featuring 24.1 megapixels. This camera was launched in late 2013 and has already received good reviews. Its price is very competitive, making it an excellent choice for those who want to take high-quality pictures at an affordable price.
The M50 II offers a more powerful zoom lens and better image quality, along with a better EVF and a 1.04M-dot LCD. The camera also offers a range of extra features such as focus stacking, focus bracketing, and pre-shooting mode, which records a sequence of frames before the shutter button is fully depressed.
The camera comes with a built-in eTTL pop-up flash. It also has a hot shoe for an external flash. Other features include a 3.5mm microphone jack and two USB Micro-B slots. One notable omission is a headphone jack.
The camera also comes with an upgraded dual pixel AF system. This autofocus system offers eye tracking in both shooting modes. The M50 Mark II lacks animal and bird eye-AF, but it has eye tracking, which is great for tracking moving subjects. Also, autofocusing is contrast-based during 4K recording, so it is slower than a phase-detection system in 1080p mode.
The Canon M50 Mark II is compatible with wireless connectivity, as well as with the EOS Webcam Utility Software. It also has a vertical video recording feature, movie self-timer, touch record control, and can support the Canon Cloud Service.


Joined: 23 Jun 2007
Location: Bungula Qintaurion, Toliman
|Posted: Fri Jan 25, 2019 1:45 am Post subject: Odd Abilities Etc. Of Real-Life Organisms Etc.
|In Scientific American magazine for February 2019, (volume 320 Number 2, the one with “How the Brain Reads Faces” on the cover), in the “Advances” department, there is a one-page “Biomimicry” subdepartment on page 12, that’s entitled “Crustacean Camera”.
It’s all about how the mantis shrimp sees polarized light.
They’ve (engineers at the Univ. of Illinois at Urbana-Champaign) managed to mimic two of the mantis shrimps’ visual “superpowers”.
One is seeing contrasts between two or more different levels of dim light even in the presence of bright light; while still being able to simultaneously see contrasts between two or more different levels of bright light.
The other is being able to better detect differences in the way light is polarized.
They have discovered that each eye of the mantis shrimp can detect and distinguish polarization in four planes.
Essentially, if the shrimp happens to look straight up, with its belly towards the north and its back toward the south, some of its ommatids would be seeing just light polarized north-south; some would see only light polarized east-west; some would see just light polarized northeast-southwest; and some would see only light polarized northwest-southeast.
They’ve developed a camera that can do similar things to these that the mantis shrimps’ visual system can do, and found out that it can see more clearly in foggy or glare conditions, or monochromatic light, than the human eye can do unaided. They think this might make self-driving cars safer. Or things like that.
I’m going to link the “Alien Senses” thread to this post.
"We're the healthiest horse in the glue factory" - Erskine Bowles, Co-Chairman of the deficit reduction commission
I am also eldin raigmore.


News » Ophthalmic lenses
What are ophtalmic lenses? The ophthalmic lenses are lenses that are used for the "eyes," that is, they serve to prepare eyeglasses. In essence, the ophthalmic lenses are the vision lenses that are mounted on the spectacle frames. When you realize you do not see us as much good to the naked eye, you should make an appointment with an eye doctor who will determine what is the state of health of our eyes and then, possibly, to issue a prescription, if there was a need to begin to bring a pair of glasses to correct the visual defect that manifested. There are few people who manage to go through the entire span of their lives without ever wear a pair of glasses. Many individuals, especially those in mature age, they must resign to use, at least, a pair of glasses when reading or working at the computer. Glasses that are used to correct the typical visual defect that occurs in mature age: hyperopia, namely, the inability to focus properly objects that are near (reading) or at medium distances (work on PC). The ophthalmologist will be able to recognize these defects by means of modern optical instruments that modern technology makes available and will then be able to issue the recipe that the optician will then follow to pack glasses.
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Main / Educational / Optical flow matlab code
Optical flow matlab code download
opticFlow = opticalFlowLK returns an optical flow object used to estimate the direction and speed of an . Generate C and C++ code using MATLAB® Coder ™. Real time optical flow, and video processing, with support for camera input in Matlab. royal-dogs.com and-toolbox-on-real-time-optical- or you can compile the code in the folder c- code. This code implements two variations of the paper "High accuracy optic flow using a theory for warping" presented at ECCV by Dr. Thomas Brox. Its variants.
30 Sep Lucas-Kanade Method Example 1. This example uses Lucas-Kanade method on two images and calculate the optical flow field. I developed some C++ optical flow code that can be used in MATLAB during my thesis. I realized that it will be helpful to share this code to the research. Matlab Tutorial. Optical Flow. Gonzalo Vaca- Optical flow or optic flow is the pattern of apparent motion of objects, Optical Flow code. (Download it from.
Optical Flow. Lucas Kanade Method (matlab) This code includes the basic Lucas Kanade algorithm and Hierarchical LK using pyramids. Please refer to the. Large Displacement Optical Flow Matlab Code. [Download ]. The code High accuracy optical flow estimation based on a theory for warping. In European. 16 Apr This is a function for optical flow in Matlab, using Lucan-kanande/Horn-Schunck optical flow estimation. It includes a sample code and the.


Scientists have already managed to create contact lenses that contain a single LED, so it’s no surprise they’re working on increasing that resolution to a more usable level. Due to the obvious tactical advantage in a combat situation, it’s no surprised that DARPA is an active participant in such research, working with Washington-based iOptiks on just such a solution. Eventually, you can expect this to trickle down to the consumer level, which would allow for virtually seamless augmented reality integration into our lives. Until then, expect the AR experience to be first tackled through use of eye glasses such as these. The next decade is going to be exciting for AR, I can’t wait to see how this develops! Read more here.


Tint for Sunglasses: Layoners Tone for all sorts of Weather condition & Activities
Ensuring utmost eye security when you head out under the sun is a primary concern. Putting on sunglasses like Layoners that offer defense to the eyes are available in various colors of lenses.
With a wide range of shade and slope options, it can be tough to select which one to get. Selecting the right lens tint is important because it can make the most of the benefits as well as the function of using tones.
Let's initial go over light exposure for better understanding:
Before buying, it's advisable that you understand the different light direct exposure. It can help you make an informed decision.
UV light is unseen to human eyes. Overexposure can bring about eye and also skin problems like the growth of eye conditions and also skin troubles like skin cancer.
There is a common misconception concerning just how darker the colors are the better defense from the UV light. The fact is all high-quality lenses despite shade give 99.9 percent UV light protection.
Some individuals thought that the darker their tints, the far better defense they have for their eyes. Nevertheless, it is not the tint that protects the eyes yet the finishings put on the lens.
IR, additionally undetectable, threatens to the human eyes. Those operating in lampwork or welding need top-notch lens tint to protect their eyes.
Visible light or white light is the light waves that are visible to the eyes.
Blue light glasses spread readily than any kind of light. Thus it can damage the eyes quickly. Your smartphones and TVs emit this sort of light.
Why the need for lens tint?
Not all lens tints are created equal. Some tints are better in enclosing light than others.
Colors can make colors more vibrant. Others can misshape them. It can boost shade clearness and also vision under numerous problems.
Different Lens Tints:
Red/ Rose/ Amber.
Rose or red tints enhance comparison by blocking the blue light. It can quicken contrast throughout overcast and warm weather. Nonetheless, it may cause color distortions.
The color enhances visual depth. It offers great roadway visibility.
These tints are kicking back to the eyes. Individuals who need to use tones for an extended period of time can gain from it.
It is suitable to wear when driving, angling, biking, winter sports, snowboarding, snowmobiling, searching, shooting, as well as various other water sports. It is additionally good for those participating in computer games as it prevents eye strain and pain in prolonged use of the computer system.
These colors are really fashionable and also offer a calming result on the eyes. It is ideal to decrease the glare, enhance specified contours, as well as increase color perception. People participating in water sports and doing tasks under intense, warm climate must wear this lens.
Melanin tints are best to protect the aging eyes from sunlight direct exposure. It can also guard people with macular deterioration.
Dark Amber/ Brown/ Copper.
Amber and Brown colors lessen glare and also get rid of blue light. This is the most effective wear throughout cloudy weather.
When it fends off heaven light, it enhances visual acuity and contrast, specifically against blue and environment-friendly histories. It is best put on when taking a look at the skies as well as grass.
Individuals doing golf, hunting, cycling, angling, baseball, skiing as well as water sports should wear these types of colors.
It is best to make use of throughout low-light, hazy, and foggy conditions. The color aids enhance vision and make things look sharper both inside your home as well as outdoors.
The yellow lens tint is recommended for indoor round sports and snow activities. Both the colors are advised when doing these tasks: interior basketball, handball, racquetball, and also tennis, searching, shooting, winter sports, biking, snowboarding, and also snowmobiling.
Eco-friendly color boosts comparison and also preserves shade equilibrium. This tint can likewise aid filter heaven light as well as reduce the glow. It is best for playing tennis, baseball as well as golf.
Gray color minimizes total brightness and also maintains a one hundred percent regular shade understanding. The neutral tint allows the eyes to see colors in its purest type.
You can use this tint under all problems. It can lower eye stress and exhaustion.
It is perfect for all outdoor sporting activities under bright light conditions. People who are driving can likewise take advantage of this color.
Before looking for sunglasses with lens tint, have a look at Layoners sunglasses that use a vast array of collections of tones that match your activities. If you are energetic in sporting activities, pick photochromic lenses that instantly darken when subjected to sunshine.


When It comes to hunting in the Southwest you can bet that you will be glassing hills and far off open areas looking for the game that you are pursuing.
In this article we are going to over the differences in optics and understanding optics a little better.
Glassing patience is key you can spend all day looking over the same hill, valley, or ridge over and over.
When it comes to choosing the right Optics for Glassing there are many choices to make from the optic company you want to choose and then what type of Optic you want. From Binoculars to Spotting scopes it may seem that you have unlimited options.
When it comes to choosing the right optic It is really up to your preference and price point. Optics can range any where from 100 dollars all the way up to 3,000 plus dollars. One of the factors that you will want to take in when it comes to purchasing optics is the game you are going for. For example if you are hunting Mountain Goats in the Rocky mountains or the Coyotes of the Sonoran desert you are going to want two different types of Optics. I typically use Riton Optics HD 10X42
So What does it mean when the Optics you are looking at say 8×42 or 10×42. It means when you see “8×42”, the first number followed by an “x” is the magnification. So in this example, the binoculars have an 8x magnification and thus it will make whatever you look at through them seem eight times (8x) closer (or larger) than what they would with the naked eye.
Binoculars with 10×42, 10×65 or even a 10×52 in their name will all magnify the image ten times (10x)
The number that comes directly after the magnification when looking at the name on a binocular indicates the size (diameter) in millimeters of the main objective lenses (those are the bigger ones on the end of the binoculars).
So using the examples above, an 8×32 binocular has 32mm diameter objective lenses. A 10×42 will also have the same size (42mm) lenses, but with a higher magnification.
Whilst the 10×32 has 32mm objective lenses and those on the 10×26 are 26mm across.
The size of these lenses is important in many ways:
Firstly it plays a major factor in determining just how physically big the overall instrument will be: the larger the lens, the bigger and heavier the binocular.
So why would you want larger lenses?
Well a good way to think of it is like looking through a window. A larger window lets in more light than a small one.
This is the same with lenses: The increased surface area of larger objective lenses means they are able to capture more light and thus play a critical role in determining the brightness or more accurately the low light performance of the binocular.
|Spotting scopes have only one lens and eyepiece,||Binoculars have two lenses and two eyepieces.|
|Spotting scopes mostly have high-end magnification,||Binoculars Magnification tend to have a smaller magnification|
|Spotting scopes pick up from there with magnification levels that most commonly fall between 15x-60x||Magnification typically tops out around 12x|
|Spotting scopes are great for when you’ve already located your target and they’re not moving much and you want to keep an eye on them. Because you have a very small field of view||With a much larger field of view, binoculars make it easier to locate a target that you saw with your naked eyes|
|Spotting scopes are best when you need to see something that’s really far away.||These are the best choice when you need something small and lightweight. They’re also best for viewing subjects that aren’t too distant.|
To break it down Binoculars are better when you are trying to spot your game off in the distance and then you can use your spotting scope to get a closer look.
If you are sheep hunting or hunting in an area where you will be spotting animals in a distances of 1 mile or more such as couse deer hunting in the desert I would suggest using a pair of Binoculars that are at-least 15 power or bigger and then use a spotting scope to get a closer view on the animal and to watch it while you plan your next move to get in shooting range. If you are hunting javalina, predators, or anything under a mile I would suggest not using a spotting scope and using Binoculars with Powers of at-least 10X42 ‘s.
Now that you have an understanding of Optics head on over to How to Glass to find out how to use your optics and tips and tricks when it comes to spotting your game.


FISO is a pioneer in the introduction of fiber optic sensing technologies for medical applications. The company offers the most comprehensive line of fiber optic temperature and pressure sensors for medical devices.
Miniature Fiber Optic Pressure Transducers
FISO’s sensors offer significant advantages over traditional solid-state catheters:
- The diameter of the working length section can be as small as 0.5 French
- The sensor tip size can be as small as 0.8 French
- The flexibility of the glass fiber offers excellent deliverability without being prone to kinking like electrical wires
- The front looking configuration of the sensor tip prevent side-facing/wall bouncing artifacts in the measurement
- The lack of metallic components provide full immunity to interference from RF, MW and MRI systems.
Design of Fiber Optic Temperature Probes, Pressure Sensors and Signal Conditioners
- Highly experienced engineering team who has been working on dozens of products used in FDA approved devices
- In-house experts in the electronics, physics, chemistry and optics sectors
- Quality ensured by a stringent regulatory compliance and the industry best practices
- Partnerships with world-leading universities, institutes and research centers


The C-Vision HD, High Definition Video Recording System from C-Tecnics is a complete package of equipment that allows for the real-time viewing and recording of full high definition camera images onto magnetic hard disk drive, with the addition of a live on-screen display of serial data fields such as GPS data, or ship's survey NMEA data-stream. The system also incorporates two high intensity LED lamps and two laser pointer modules.
The C-Vision Nano is a portable video-capture system designed specifically for use with your laptop or portable computer for observing underwater operations. This uniquely developed unit, combined with its easy-to-use video monitoring and recording software, is ideal for a range of diving applications.
The C-Vision Nano is available in 1 or 2 channel versions, with LED light control and optional depth monitor.
The C-Vision Nano - Rack Mount is a video and communications capture system designed specifically for use with your laptop or portable computer for observing underwater operations. This uniquely developed unit, combined with its easy-to-use video monitoring and recording software, is ideal for a range of diving operations.
Just install the software, plug in and you’re ready!
Available in 1 or 2 channel versions with LED lamp control and optional depth monitor. Also available in a portable format.
The rack mounted version of our proven, reliable portable system. Tailored for fixed installations such as containerised systems, the C-Vision R is available in a range of configurations - up to 4 diver video recording channels and up to 4 communications channels (2 or 4 wire modes), RAW video output and compatible with the C-Tecnics C-DVR Blackbox Recorder.
The C-Vision Solo is a superbly engineered video system for both inshore and offshore diving operations. The system allows video monitoring and recording in one easy to operate unit. The core of the C-Vision Solo system is the portable surface control unit, which incorporates video and variable light controls for a diver’s camera and light operated through a waterproof keyboard built into a rugged case.
An economical and reliable solution for diver video and communications monitoring; the E-Vision HD, available in single channel or 2 channel splitscreen versions, offers high definition diver video recording and playback from the built in 500GB hard disk drive and LED lamp dimming control. The 15'’ integrated foldable LCD monitor provides a crisp clear, anti-glare display during live video and playback.
Introducing the new 2-channel Analogue High-Definition video system - the E-Vision HD-2.
A robust and easy-to-transport video system with 2 independent diver video channels and LED lamp controllers. Each recording channel also features its own 4-key control pad for quick control commands, such as record, stop and playback.
A rack mount version of the popular E-Vision system, available with multiple channels. Born from the portable and robust E-Vision video recording system is the E-Vision R - a 19'’ rack mounted unit designed for fixed installations and dive control stations. An economical and reliable system for diver video and communications monitoring; the E-Vision R provides diver video recording and playback from the built in 500GB hard disk drive, LED lamp dimming control and an external audio-in function.
The C-Torch is designed to be used within saturation diving systems. Incorporating a Helium relief valve, rugged design and a bright output; this is the torch of choice for use within saturation diving chambers, diving bells and deck decompression chambers.
The CT4004 light projects a soft wide angled white light, producing an even illumination to adequately cover the angle of view for C-Tecnics cameras. Utilising one of the latest LED arrays the lamp produces a high light output for minimal power input. It is very rugged having no delicate lamp filaments and is "over temperature" protected.
The CT4006, or ''C-Lite'', is a compact and robust underwater LED light, designed to withstand pressure depth up to 1000m/3280ft. At 80mm long with a diameter of 30mm, and weighing only 144g, the CT4006 is one of the smallest & most economical LED lights available on the market.
Introducing the serial control model CT4011 Underwater LED Light. The control electronics allow control options of dimming the LED lamps via RS232, RS485 or a 0-5V control voltage. In serial control, RS232 or RS485, a preset list of commands allows the user to set individual addresses for each light, set intensity for each light and allows the use of multidrop in RS485 to control up to 16 LED Lights.
The CT4012 LED lamp projects a cool white light with wide angle view, producing an equal illumination to effectively cover the landscape angle for C-Tecnics cameras. Utilising one of the latest LED arrays the lamp produces a high light output for minimal power input.
The housing can be made with Aluminium, Stainless Steel or Titanium materials which helps to work at various operating depths.
This LED powered flashgun measures and emits an ambient light with automatic calculation of the required level of output to produce the correct amount of lighting for quality images. The Flashgun can also be set up manually should this be the preferred method of use.
The CT4015 Flashgun is optimally configured for use with the C-Tecnics Digital Stills Camera (CT3022) or C-Tecnics Dual Video and Stills Camera (CT3023), allowing a synchronised 'flash' when the stills are instructed.
The C-Laser subsea laser module is a compact, rugged solid state subsea laser that has been designed for a variety of underwater highlighting and identification tasks, or when used in pairs, for scaling and ranging operations. Two or more units can be mounted a known distance from one another and will produce red dots on the targets at an equivalent spacing such that accurate measurements can be taken.
With a number of ready-to-deploy and highly capable all-in-one subsea imaging systems available to choose from, we also develop custom-built systems for our broad and growing range of marine applications.
With the ability to capture digital stills in 4K and HD plus live HD video, SubC cameras provide industry-leading optics with exceptional value. This attention to detail ensures that our subsea cameras surpass the most crucial integration requirements of ROV, AUVs, Observatories, and more.
Our high-performance imaging systems are supported by powerful software that allows for unrivalled digital video recording (DVR), live streaming, and annotation. Our extensive solutions can also help you with the storage, management, and organization of your data. .
Like the rest of the SubC product line, our easily attached LEDs and lasers are software controlled and integrate easily into our camera systems to achieve stunning clarity in even the darkest environments.


Teaching new dogs old tricks.
While LEDs are great stuff for optimizing the use of energy for generation of light, they are not immune to the issues of brightness and glare. In application, some of the newer LED products are downright glare bombs. In the over-zeolous pursuit of maxing out efficacy many of the most efficient products get that from lack of optical control. This is great for by-the-numbers evaluation, but can result in some pretty ugly field conditions. Other source using LEDs, have small luminous source areas delivering high light output. The result is an offending brilliance for those unfortunate to be in their focal path.
This is an exercise in taking a couple of these new LED dogs to training camp and applying some old tricks to resolve their issues. Since most LED lights and retrofit lamps are configured differently than the conventional sources they replace, grabbing off-the-shelf parts to apply is rarely possible. The combination of luminaos source area, orientation, and package dimensions means fixing any glare issues requires an equally unique approach. This is but the start of a process I intend to pursue, one source at a time if necessary.
The Cree LR6
For those sensitive to source brightness and in many applications where the proximity of the occupants is such that the aperture of the LR6 is close in hand, their can be a serious issue of glare and brightness. This is the result of this products overly wide distribution and field angles, often promoted as an attribute in generating high vertical surface illuminance. I appreciate the product, and the pitch, but… after living with the LR6 for two years now, it became so much an issue that we stopped turning them on to avoid them. The issue is that any time the viewing angles are shallow, the apparent brightness of the lens in the LR6 is, to put it bluntly, offensive. Even with the Cree accessory lower trims, the brightness from the too-shallow trim and exposed lens is unattractive.
The approach taken was simple. First, by encroaching on the lens perimeter a very small amount (about 3/16″), and increasing the depth of the baffle itself, I eliminated the high angle brightness. All light above 25 degrees is simply blocked off. The effect on illuminance in the desired lighting zones below was imperceptable, and measured less than 3% less than no trim at all. I feel the result is a much more comfortable and attractive lighting effect.
More can be found at the Lumenique site for Design Sixteen as well.
The LR6 without trim or baffles produces very high angle brightness than can be offensive at many viewing angles.
With a simple snap-in baffle that reduces the aperture slightly and increases the shielding depth, the high angle brightness is eliminated, resulting in a more attractive and comfortable application
Several LR6 Approaches
In the process of experimenting with various approaches to control the brightness from the large source area of the LR6, I also tried some louver designs, like were once used on big R40 lamps, which have the same problem in shallow housings. While these were even more effective in controlling brightness, the loss of total light output was more than I felt necessary. However, in some applications, these may be an even better solution.
The baffle is 1 1/2" deep, snaps onto a lip on the LR6 lens
These louvers will be familiar to anyone who has done a church using R40 or R56 lamps. They do a great job of brightness and glare control, but impose a loss of light that is not always desirable.
The MR16 Retrofit Lamp
The MR16 lamp has always been a little glare grenade. LED versions that make enough light to be considered viable replacements, like the ones here from LEDengine, are just like their halogen forebearers in this regard, and worse. With an optical source size of just 1″, the brightness of the source is really offensive.
To avoid cutting into the light pattern, while creating a reasonable cutoff takes a little effort in working out the geometry of a very simple and familiar snoot. Further, since most all retrofit lamps have their own geometry and rarely match conventional lamps, mounting standard MR16 accessories is not an option.
The snoot here cuts off all light outside 45 degrees from the furthest edge of the light source. However, the design is also wide enough not to cut into the beam pattern, so applied light levels are not effected. The result is an elimination of glare from most vieing angles, just as this approach has done for halogen lamps of the past.
The brilliance of an efficient LED optic can be offensive and distracting if left uncontrolled.
The snoot cuts off light outside 45 degrees, eliminating the visibility of the optic, yet retains the main beam angle and most of the field distribution, so lighting effect is the same, just more comfortable to live with.
Not a new approach, just one designed specifically to this lamp. Unlike the standard halogen lamp, every LED retrofit lamp will need tweaks to the design to suit its unique geometry and optics.


Eye Contact Optometry offers the newest innovations in contact lens materials and care systems to provide you with optimum vision correction, comfort, and corneal health. Daily, extended and continuous wear contact lenses are available.
We offer a variety of contact lens products
Rigid gas-permeable (RGP)
Made of slightly flexible plastics that allow oxygen to pass through to the eyes.
Daily-wear soft lenses
Made of soft, flexible plastic that allows oxygen to pass through to the eyes.
Available for overnight wear in soft or RGP lenses.
Soft lenses worn for an extended period of time, from one to six days and then discarded.
Soft daily wear lenses that are replaced on a planned schedule, most often either every two weeks, monthly or quarterly.
Toric Contact Lenses for Astigmatism
Uniquely designed to meet the special vision correction needs of patients with astigmatism.


At long last, laser weapons
are nearing deployment
But it was not until the invention of the laser in 1960 that the true
potential of that concept led to serious research programs, which led
quickly to major size, weight, and power (SWaP) limitations. Laser is
short for light amplification by stimulated emission of radiation.
In the decades that followed the construc-
tion of the first laser prototype at Hughes
Research Laboratories in Malibu, Calif.,
numerous types of lasers have been devel-
oped, based on a variety of power sources and
light generation materials, for a wide breadth
of applications ranging from barcode scanners
to cutting and welding in manufacturing, light shows, DNA sequenc-
ing, optical communications, laser printers, and surgery.
One of the first potential laser weapons involved using laser beams
as “dazzlers” to blind opponents temporarily. Still, the narrow gap
between temporary and permanent blinding led an early ban on that
aspect under the Protocol on Blinding Laser Weapons, issued by the
United Nations in 1995. Many governments, however, have used loopholes in the Protocol — or simply ignored it — to develop blinding lasers.
BY J.R. Wilson
From the mythical burning mirrors of
ancient Greek inventor Archimedes to
the Martian death rays of H.G. Wells to
Flash Gordon’s raygun to Capt. Kirk’s
phaser, humans have been fascinated
by the possible use of light beams as
weapons for at least two millennia.
Once the stuff of science fiction, U.S. military laser weapons
now are considered the future successors to missiles and
gun systems to protect military forces from enemy boats,
unmanned aircraft, ballistic missiles, mortars, and rockets.


The Canon Powershot SD600 Digital Elph Camera is an advanced digital camera that offers an array of features to help users take stunning photographs. It is equipped with a 6.0 megapixel lens, 2.5-inch LCD, 3x optical zoom, and a DIGIC II Image Processor for faster image processing. The camera also includes a range of automatic and manual controls for creative freedom, such as scene modes and shutter speeds. Additionally, the camera provides a variety of shooting modes such as portrait, landscape, and close-up, as well as custom white balance, exposure compensation, and ISO settings. With its robust construction, the Canon Powershot SD600 Digital Elph Camera is a great choice for photographers of all levels who are looking for an exceptional imaging experience.
Ostatnia aktualizacja: Arkusz montażowy Canon Powershot Sd600 Digital Elph Camera
Arkusz montażowy Canon Powershot Sd600 Digital Elph Camera
Bezpośredni link do pobrania Arkusz montażowy Canon Powershot Sd600 Digital Elph Camera


There’s a lot to learn about the emerging and popular technology associated with LED lighting. You’ve likely heard a lot about how they enhance energy efficiency and how they last much longer than other options, but there is still much to know about LED lighting. Check out some of these interesting facts you may not have known about LED lighting.
How it Works
Light emitting diodes, otherwise known as LED lighting, uses an electrical current to pass through a microchip. That microchip is what illuminates the tiny light sources within the LED. Lighting products that use this technology often produce light at about a 90 percent higher level of efficiency than incandescent bulbs. As most bulbs produce heat along with light, LED lighting absorbs that heat into a heat sink rather than emitting it into the atmosphere.
LED lighting is used in various applications, including general lighting and specific performance-related lighting. While there are LED bulbs available, some lighting fixtures feature a built-in permanent light source. You’ll find LED lighting in office settings, retail stores, homes, performance spaces, theatres, nightclubs, and external signage. In some hybrid options, a nontraditional bulb is used in a uniquely, specially-designed fixture.
Difference Between Led and CFL
Compact fluorescent lighting, otherwise known as CFL, is another energy efficient lighting option that is often compared to LED. However, there are some fundamental differences between these two lighting solutions. The first difference is that LED lighting emits light in a specific direction while CFL lighting emits light in all directions. This allows LED lighting to use energy in a more efficient way. LED bulbs can be designed to emit light in all directions, but it needs to be specifically engineered to do so. Unlike LED, CFL light works through an electric current that flows between electrodes at each end of a tube that contains gases. The resulting reaction creates UV light and heat, which is then transformed into visible light when it hits as phosphor coating inside the bulb.
COMMERCIAL LED LIGHTING SERVICES FROM CMI
Are you in need of electric or lighting services for your commercial facility? CMI Companies is here to help! With over 35 years in the industry, CMI has an array of equipment to handle the logistics of any in-house job. We also frequently provide solutions to property managers and upcoming developments. CMI Companies provides services in Mid-Atlantic Region and proudly serves clients in Northern Virginia, Maryland, Richmond, Southern Virginia, Manassas, Prince William County, Fairfax County, Rockville, and Prince George’s County. Also, check us out on Google +, Facebook, Twitter, and LinkedIn.


Here are the benefits you will receive when you purchase new glasses from our optical:
At our office you’re treated as a patient, not just a customer who makes a purchase. We’re locally owned and operated. We care about our patients for a lifetime, and we stand behind our products years down the road.
Professional “Position of Wear” Measurements
Our opticians take professional “Position of Wear” measurements of your eyes in the actual frame that is fitted on you in real life. These important measurements include: segment height, vertex distance, pupillary distance, pantoscopic tilt, and frame wrap. These 5 important “position of wear” measurements ensure that you’ll receive precisely crafted lenses that deliver exceptional visual performance. Online glasses retailers have no way of taking these important measurements regardless of how advanced their websites may look virtually. Don’t fall for the misconception that you only need your prescription and PD (pupillary distance) to order glasses. Below is a picture of the measurements that are actually used in your digital lens manufacturing process.
Digital Lens Design Based on Your Unique Rx
We use the latest lens technologies for single vision and progressive lenses that give you the most comfortable and high-definition visual experience. Digital lenses are made-from-scratch and customized based on your unique eye position and eye movements, your prescription power, and the specific frame that is properly fitted on you. Digital lenses are designed by advanced software utilizing millions of calculations, and are manufactured using state-of-the-art equipment. In order to receive 100% of the benefits from digital lenses, professional “position of wear” measurements must be taken because they are vital for the optical calculations in the lens manufacturing process. Don’t settle for basic stock lenses that are manufactured overseas, stocked in a warehouse, and then simply cut to fit into the frame. You deserve the best visual experience possible which can only come from lenses that are digitally manufactured to your unique specifications.
Two Year Scratch Warranty on Lenses with Premium Anti-Reflective Coating
If you happen to scratch the Anti-Reflective coating on your lenses within 2 years, we simply replace the lenses for free, no questions asked.
Two Year Warranty on the Frames Against Manufacturers Defects
Our premium luxury frame brands such as ic! berlin, Bevel, Entourage of 7, Etnia Bercelona, Bellinger Denmark, and MODO, are made from premium hypoallergenic materials that are lightweight and durable for years to come.
Complimentary Frame Adjustments and Service
We will adjust your frame as many times as you need for as long as you own your glasses. We will also replace missing screws and nose pads for as long as you own your glasses.
The Most Advanced Anti-Reflective Coatings
We use coatings that offer the most clarity, durability, scratch resistance, harmful blue light protection, and UV protection, so that you can experience the best vision possible through your prescription lenses.
50% Glasses Replacement Cost
If you accidentally break or lose your glasses, we will replace them at 50% of the original cost.
Doctor Prescription Change
If the Rx is not working out for you and our eye doctor makes a change to your Rx, we will remake the lenses at no charge within 90 days of your exam.
Digital Lens Satisfaction Guarantee
If you have difficulty adapting to the new digital lenses within the first 30 days, we will remake the lenses one time at no charge to a different design that may work better. If you wish to upgrade your lenses to include more features, you would only pay the difference for the lens upgrades.
An Opportunity to Donate Eyeglasses to Those In Need
We believe in giving back to our community here in Rochester and around the world. Therefore we regularly donate eye exams and glasses to individuals who are in need. Thanks to your support we have provided over 5,000 eye exams and over 8,000 pair of glasses at no cost since 2011.


WHAT is believed to be the world’s first-ever conference on the use of hyperspectral imaging in the fields of food innovation, science, crime fighting and counter terrorism is to be held in Glasgow next month (April 13 -14).
Says a spokesperson: “Scotland is leading the way in the development of the technology which collects and processes information from across the electromagnetic spectrum. Unlike the human eye, which is limited to visible white light, hyperspectral imaging can see ultraviolet and infrared.
“Every object leaves a unique ‘fingerprint’ across the electromagnetic spectrum. These fingerprints are known as spectral signatures and aid the identification of the materials that make up a scanned object”
Says Kevin Lynch, of Glasgow-based Gilden Photonics: “In nature, the mantis shrimp enjoys hyperspectral vision which enables it to recognise different types of coral, prey and predators, all of which may appear as the same colour to the human eye.
“We have developed the technology and made it economically viable to be used by a number of industries to identify and measure materials, whether it’s counterfeit alcohol, damaged human tissue or the consistency of a loaf of bread.
“Hyperspectral imaging has been around for about 15 years but very few people know about its potential. The technology has until recently remained largely untapped.
“We have built a range of sensors which look at objects using a wide portion of the electromagnetic spectrum. We have used this to build up a major database of known materials which can then be used to compare with samples. A prime example is the detection of counterfeit spirits without contamination of the product or using the spectral signature of oil to help mineralogists find new fields for drilling.”
Next month (April) the University of Strathclyde, in partnership with Gilden Photonics, is hosting a two day event, between April 13-14th, to highlight the potential uses and practical applications of the ground breaking technology.
“It is an exciting time to be involved in such a venture” said Professor Stephen Marshall of the University of Strathclyde.
The spokesperson continued: “The conference will hear expert evidence of the advantages of using the technology in dentistry, food and drink innovation, agricultural use, homeland defence, crime fighting, entomology and even astronomy.
“The conference comes just ahead of the official opening of the first-ever Hyperspectral imaging centre at the University of Strathclyde co-sponsored by the University’s Bridging the Gap Initiative and Gilden Photonics, the UK’s leading designer, manufacturer and supplier of cost effective and innovative optical spectroscopy solutions, components, turn-key instruments and OEM components.
“The centre, the first of its kind in the world, will provide a central location where the basic technology of hyperspectral imaging is available to any and all businesses and researchers.”
Continued Mr Lynch: “Any industry can approach the centre with any particular problem and we will help with an investigation by bringing their samples to the centre and putting them under the hyperspectral imaging system.
“Together with experts from the University’s Electronic and Electrical Engineering Department and the Strathclyde Institute for Pharmacy and Biomedical Sciences we then come up with a proof of concept which will hopefully show them that they can get the results they want from using this revolutionary system.”
MEDIA RELEASE posted by Flag Media. You too can post a media release (aka a press release) on allmediascotland.com. For more information, email here.


For normal undistorted vision, the cornea should be smooth and equally curved in all directions. When astigmatism is present, the cornea is warped and curves more in one direction than the other. In other words, the cornea is shaped more like the side of a rugby ball than a football where, in one direction, the surface is steeper (more curved) than the other.
Normally, light enters the eye and is focused precisely on the retina. With astigmatism, the warped cornea causes the light rays to bend improperly depending on where they strike the cornea. They are not refracted (bent) equally in all directions and so one focal point on the retina is not attained. Some light rays are not focused on the retina but are focused in front of or behind the retina.
The result of multiple focal points is distorted vision. Objects appear somewhat indistinct and slanted. Vision with astigmatism can be compared to what one sees when looking through a glass bottle, with images appearing too tall, too thin, too wide, or blurred.
Astigmatism is most often caused by a defect in the curvature of the cornea but may also occur from an unequal bending of light by the lens inside the eye. Astigmatism can occur in conjunction with short-sightedness (myopia) or long-sightedness (hyperopia) and usually remains unchanged through life despite natural changes in the amount of myopia or hyperopia.
Astigmatism can also result from corneal scars or surgery. Eye surgery may cause the cornea to scar and warp, changing the path of light as it enters the eye. Some patients experience surgically induced astigmatism after eye surgery. Tightly tied sutures can cause a slight wrinkling of the cornea. The patient will experience distorted vision or astigmatism until healing or loosening of the sutures relieves the problem.
Astigmatism is diagnosed during a routine eye examination. A visual acuity test is performed to determine the unaided ability of the eye to focus light correctly. A process called refraction is used to measure the refractive error of the eye (myopia or hyperopia) and includes specific test to detect measure and correct astigmatism. The final result determines the prescription for corrective lenses that correct myopia, hyperopia and astigmatism as necessary
A small amount of astigmatism is common and usually does not need correction. However, in cases where the problem is more severe, glasses and contact lenses are used to correct vision. To correct astigmatism, glasses or contact lenses are ground to neutralise the defective curvature of the cornea. Hard or gas permeable contact lenses generally improve astigmatism better than soft contact lenses.
But in many cases soft contact lenses can be helpful. As contact lens specialists, Major Opticians are experts in dealing with astigmatism using the full range of options. We specialise in helping patients who have been told they "can't wear contact lenses".
For a complete examination and professional advice regarding your vision correction needs, contact us to make an appointment.


Optasia Medical Boston and Manchester, England
Medical imaging-based computer assisted detection (CAD) solutions.
Optasia Medical builds medical imaging-based Computer Assisted Detection (CAD) solutions to help physicians make better decisions. With Optasia Medical’s tools, medical images can be evaluated more rapidly, more accurately and more reproducibly. The Optasia™ platform enables robust model-based vision solutions to automated medical image interpretation problems. With Optasia™, new applications can be developed rapidly for seamless integration into the clinical workflow.
Optasia Medical is applying the Optasia™ platform to problems in musculoskeletal disease. Specifically, for the analysis of X-ray images in the detection and monitoring of osteoporosis, osteoarthritis and rheumatoid arthritis and the planning and assessment of orthopedic surgery


When choosing surveillance cameras, especially in an outdoors setting, selecting cameras that can capture imagery at all the light levels you will experience is critical. Knowing how important this is, in order to select the proper camera first we must determine the Lux rating necessary for the environment that you are intending to place the camera in.
What is lux?
Lux is used as a measure of the intensity specific to the amount of light that hits or passes through a surface (as perceived by the human eye).
So to expand upon this in human eye terms below are some common scenarios with the appropriate Lux ratings noted:
- 0.0001 lux – Moonless overcast night sky
- 0.002 lux – Moonless clear night sky
- 0.27–1.0 lux – Full moon on a clear night
- 50 lux – Family living room lights
- 80 lux – Office building hallway lighting
- 100 lux – Very dark overcast day
- 320–500 lux – Office lighting
- 400 lux – Sunrise or Sunset on a clear day.
- 1000 lux –Overcast day
- 10000–25000 lux – Full Daylight (not direct sun)
- 32000–100000 lux – Direct Sunlight
As a good general guide, anything outdoor that has a less than 1.0 Lux condition would warrant a recommendation to moving over to an Infrared equipped camera. The infrared feature would ensure that all objects are visible.
The professional surveillance engineering team at Access Control Technologies has the knowledge and installation experience to ensure that you get the right security cameras for the right situation. We always take the time to review your individual site needs and propose a proper cost-effective solution.


Fluorescence imaging is a simple and powerful tool to help surgeons visualize
in real-time lymphatic structures, organ perfusion and vasculature.
In fluorescence imaging, surgeons employ an imaging system like the .nm Fluorescence imaging with a contrast dye. The contrast dye is directly administered by the surgeons themselves and the imaging system is used to scan the area of interest to see regions of interest and make necessary and critical decisions.
Advantages of fluorescence imaging
No use of radioactive contrast dyes
Imaging with high contrast and sensitivity
Low cost and increased safety
Faster, more procedures with better results
Used directly by surgeons
No additional personnel needed
Real-time imaging allows on-the-table decision making
Can be repeated multiple times without any harm to patients


Select from the frequently asked questions below.
- A microscope is a tool used to make things that are too small to be seen by the human eye look bigger.
- Microscopy is the study of small objects using microscopes.
- Light microscopes use lenses, typically made of glass or plastic, to focus light either into the eye, a camera, or some other light detector.
- The most powerful light microscopes can make images up to 2,000 times larger.
- Stained glass from the Middle Ages is often hundreds of years old.
- Many of these relics are in need of cleaning and maintenance.


Hearing someone in a crowded room can be almost impossible due to the propagation of the sound waves, but what if we can design audio with the same precision we can project?
MIT researchers have developed a system that can do just that, creating a streamlined audio stream that can be shot at the ears of a person in the same way a laser pointer launches a beam of light. It is accurate, safe and can transmit music and even speech to the target without being heard by others.
"Our system can be used remotely to broadcast information directly to the ear of someone," said Charles Wynn of Lincoln's Laboratory of Massachusetts Institute of Technology. "This is the first system that uses lasers that are completely safe for the eyes and skin to locate a beep to a person in any environment."
The system relies on photoacoustics, which is a sound wave resulting from the interaction between light and matter. The team developed a laser system that interacts with water vapor in the air to generate sound along a narrow path between the transmitter and the receiver's ears.
"It can work even in relatively dry conditions, because almost always there is little water in the air, especially around people," Wynn said. "We have found that we do not need a lot of water if we use a laser wavelength that is very strongly absorbed by the water. This was the key because stronger absorption leads to more sound. "
In testing, the system works well at a distance of 2.5 meters, using only equipment that is already commercially available, but researchers say it can easily be made even more powerful.
The ability to send targeted audio over long distances will obviously have its advantages, especially in emergency situations where background noise can block the ability of a person to hear important information. The team hopes to continue to deal with its system and explore potential applications in the near future.


Secom provides high quality CCTVs that meet international standards. The camera can record high-resolution video with high capacity hard disk that allows video to be able to be recorded for a long time.
We have various kinds of camera and we will provide the most suitable camera depending on your needs (e.g. budget, resolution, video management system such as face recognition, motion detection, line crossing detection etc.) and your premises physical environment (e.g. your premises structure, location, possibility threat etc.) for the most effective security system.
Analog camera system uniqueness is connecting transmission cables from each camera to the recorder. The equipment price is cheaper than IP camera, but the downsides are: limited distance of signal transmission, signal is often disturbed and the system can deteriorate if used for a long time.
Each IP camera has its own IP Address, it can be connected to the internet at long range. Currently, IP camera is popular among security provider because of its good quality, has many useful functions, it is easy to scale the system and can be used for a long period.
Mostly, lens of CCTV is divided into 2 types. Fixed lens and varifocal lens. Fixed lens have a fixed distance and focal length and it cannot be adjusted. Suitable for capturing the overview of the area. The price is lower than varifocal lens. Varifocal lens can be adjusted according to the distance and to the focal length, allowing you to zoom into an object. The price is higher than fixed lens.
360°Camera allows you to record everything with a 360 degree panoramic view. It can decrease traditional camera’s blind spots and reduce the cost of installing multiple cameras.
PTZ camera, or pan tilt zoom camera, is a camera that is capable of remote directional controls and zoom control. With PTZ camera, you can monitor a wide area with only one camera.


Your annual trip to the eye doctor is about much more than just renewing your glasses or contact lens prescription. During a comprehensive eye exam, we evaluate our patients’ overall eye health so that we can catch eye diseases and other illnesses in the early stages. Using the most advanced, up-to-date technologies allows us to give the best possible assessment with accurate, repeatable, and efficient diagnoses.
Optos Daytona Ultra-widefield Retinal Imaging
The newest version of the popular Optos, non-dilated retinal exam. Optos’ patented ultra-widefield digital scanning laser technology acquires images that support the detection, diagnosis, analysis, documentation and management of ocular pathology and systemic disease that may first present in the periphery. These conditions may otherwise go undetected using traditional examination techniques and equipment.
Zeiss Cirrus HD-OCT
Optical coherence tomography (OCT) is a non-invasive imaging test. OCT uses light waves to take cross-section pictures of your retina. With OCT, we can see each of the retina’s distinctive layers. This allows us to map and measure their thickness. These measurements help with diagnosis. They also provide treatment guidance for glaucoma and diseases of the retina. These retinal diseases include age-related macular degeneration (AMD) and diabetic eye disease.
The newest technology in obtaining the most accurate, repeatable and efficient prescriptions while providing a new enjoyable process for the patient. The RT-5100 benefits from Nidek’s latest generation of electronic refraction technology. Replacing the standard refractor, it allows practitioners to control the entire refraction process from a small digital keypad.
Icare ic100 Tonometer
No more puff of air! This device uses patented rebound technology to precisely measure intraocular pressure. Its light-weight probe makes momentary contact with the cornea. Icare’s proprietary algorithm coupled with state-of-the-art software allows the device to evaluate deceleration, contact time and other motion parameters of the probe when it touches the cornea.
Nidek OPD Scan III
The new OPD-Scan III is an extremely powerful and useful tool for managing all refractive conditions and providing accurate contact lens fitting. The unique OPD-Scan III is an advanced vision assessment system that combines topography, wavefront, automated refractor, keratometry, and pupillometry in a single package. It is the latest device of its kind.
Zeiss Humphrey HFA II-745i
The “Gold Standard” in visual field evaluations. The Humphrey® Field Analyzer (HFA™) is the accepted standard of care in glaucoma diagnosis and management and is the device that all major clinical trials utilized and referenced.


题目：Polymer/Inorganic Composite Interfaces:
From Plasmonic Sensing to Responsive Cellular Interactions
主讲人：Prof. Helmuth Möhwald
Max-Planck-institute of Colloids and Interfaces, Potsdam
There have been many developments to fabricate ultrathin polymeric films, but less is known about the interaction of these films with an inorganic support. I will discuss 3 different systems, where the interaction is most important for the function of the film in response to processes on the support.
1. In cooperation with G. Zhang, Jilin University, a nanoplasmonic surface with a Ag film deposited is designed that is optically transparent and that can be excited by visible light.Field enhancement can lead to enhanced optical or Raman spectroscopic sensing, it can also be used to heat a thermoresponsive polymer film, that then changes wetting behavior. This can also be used to drive fluids uphill.
2. SiO2 nanoparticles can be decorated with an ultrathin polymer film containing plasmonic Ag nanoparticles in defined distance from each other. Aggregates of these particles then provide contact areas of increased electromagnetic fields, that serve as “hot spots” for enhanced intracellular Raman sensing.This is possible with sensitivity to detect certain diseases. (D.Radziuk, H.M., ACS Nano 9 (2015)2820-2835)
3. A TiO2 support excited by UV light, sonochemically treated also by visible light, ejects charge carriers, that can be converted into protons in an aqueous or polyelectrolyte environment. The resulting pH change can lead to a change in thickness and elasticity of the polymeric film. This can lead to changes in cell growth and via light this can be guided on a surface.(E.V.Skorb, D.V.Andreeva, H.M. et al. subm.)
Helmuth Möhwald教授在胶体化学与界面科学领域享有非常高的学术地位和影响力，曾担任欧洲胶体与界面学会主席、德国胶体学会主席以及多个国际著名期刊的主编和编委。Möhwald教授在众多研究领域有很深的造诣，包括仿生科学、界面与胶体科学、受限空间的化学与物理等，已在Science、JACS、Angewandte Chemie、Advanced Materials、Physical Review Letters等刊物发表学术论文910余篇，被引用37000多次，H-因子为96，是世界上他引频率最高的科学家之一。Möhwald教授也获得许多奖项，包括the Overbeek medal of the European Colloid and Interface Society, the Gay-Lussac Award from the French Ministry of Science and Technology, the Wolfgang-Ostwald award of the German Colloid Society，并于2012年当选为欧洲科学院院士。在他的努力推动下，1992年德国马普学会成立了胶体与界面研究所，他曾担任该所的所长。Möhwald教授已经被国内多家单位包括中国科学院北京化学研究所，复旦大学，浙江大学，吉林大学和苏州大学等多所知名大学聘请为客座教授。
Professor Helmuth Möhwald is a physicist and physicochemist and received his Ph.D. in physics from Max Planck Institute for Biophysical Chemistry in 1974. He is one of the founding directors of the world-famous Max Planck Institute of Colloids and Interfaces, and since 1993 he served as the director and scientific member at this institute. Prof. Möhwald is a well-known specialist in a wide range of research areas, such as liquid/gas interfaces, biomimetic systems, and chemistry and physics in confined space. He has published more than 910 peer-reviewed publications and his work has been quoted more than 37000 times and his H-index is 96.
He is also a highly successful university mentor, and more than 105 former colleagues now occupy professorial chairs in Germany and abroad, in the areas of physical chemistry, applied physics and biophysics, polymer chemistry, material sciences and chemical engineering. He is also honorary professor at the University Potsdam (1995) and the Chinese Academy of Science (2006), guest professor at University Pennsylvania (1983), Zhejiang University (2001), Fudan University (2004), Harbin Institute of Technology (2011) and Soochow University (2011). Dr. Möhwald has served as the Chair of European Colloid and Interface Society (2002-2003) and German Colloid Society (2003-2007).
He received numerous awards, such as the Physics award of the German Physical Society (1979), the Overbeek medal of the European Colloid and Interface Society (2007), the Gay-Lussac Award from the French Ministry of Science and Technology (2007), the Wolfgang-Ostwald award of the German Colloid Society (2009), and BP Visiting Lecturer of Cambridge University (2010). In 2012, he was elected Member of the Academy of Europe.


IP-Камера Panasonic WV-SF538E
безнал с НДС: 33583.00
Super high resolution at Full HD/1,920 x 1,080 created by 3.1Megapixel high sensitivity MOS Sensor.
1080p Full HD images up to 30 fps and 360p image up to 30fps simultaneously.
Cropping function enables to provide whole image (1,920 x 1,080) and the part image (640 x 360) simultaneously.
Up to 4 image capture areas can be specified, and it is also possible to control the sequence.
Picture in picture function: A cropping image or an alarm image can be added to an image and transmitted.
Multiple H.264 (High profile) streams and JPEG streams ensure simultaneous real time monitoring and high resolution recording by enhanced “UniPhier®?.
Super Dynamic and ABS (Adaptive Black Stretch) technologies deliver 128x wider dynamic range compared to conventional cameras.
Face Super Dynamic Range technology ensures clear face image.
High sensitivity with Day и Night (Electrical) function:0.5 lx (Color), 0.3 lx (B/W) at F1.3
Using Panasonic distinctive LDC (Lens Distortion Compensation) function, natural image without distortion can be monitored though using wide angle lens.
ABF (Auto Back Focus) ensures easy installation.
Digital Noise Reduction: 3D-DNR ensures noise reduction in various conditions.
Progressive scan ensures clear images with less motion blur and no tearing even when the subject is moving.
Superior color reproduction by primary (RGB) color filter.
Electronic sensitivity enhancement: Auto (Up to 16x) / OFF
Fixed electronic shutter: Up to 1/10,000 fixed electronic shutter can be selectable.
3x Extra optical zoom at 360p resolution. (Picture Mode : 2 Mega pixel [16:9] )
VMD (Video Motion Detection) with 4 programmable detection areas, 15 steps sensitivity level and 10 steps detection size
Face detection function detects the position of human face and the information is sent by video stream.
JPEG Image compression ratio can be changed by alarm so that higher quality image can be provided.
H.264 max. bit rate/client and Total bit rate control allows flexible network traffic management.
Frame rate priority mode controls bit rate and compression ratio to provide the specified frame rate.
Internet mode: H.264 images can be transmitted over HTTP protocol.
Multi-language: English / Italian / French / German / Spanish / Russian / Chinese / Japanese
IPv4/IPv6 protocol supported.
Supports SSL, DDNS (viewnetcam, RFC2136)
Still images (JPEG) can be viewed on mobile phones via the Internet.
Onvif compliant model
2.8 ~ 10.0 mm, 3.6x Varifocal Auto Iris Lens


In the 1980s, Charles Munnerlyn '62 revolutionized the optics industry by designing and building the first excimer laser system for vision correction.
His family nicknamed him “Dr. Do It.”
“When you need something done, when there’s a problem in the house, or the sink’s leaking, you call him,” said Rhonda Munnerlyn ’93 in a 2009 video about her father-in-law. “He’s ‘Dr. Do It’ to us.”
Charles Munnerlyn ’62 is indeed best characterized as a problem solver—of both small and large proportions.
In the 1980s, Munnerlyn revolutionized the optics industry by designing and building the first excimer laser system for vision correction. He also developed the core mathematical formula—the Munnerlyn Formula—still used today by ophthalmologists to dictate the amount of corneal tissue to be removed during laser vision correction.
Before his technology, corrective options for people with vision disorders such as myopia, hyperopia and astigmatism were unreliable and costly. But now, the procedure he fathered—more commonly known as LASIK—affords millions of people the freedom from wearing eyeglasses while achieving 20/20 vision.
Eye on the Prize
A native Texan, Munnerlyn grew up in a series of rural towns. He fiddled with telescopes as a child and by his high school days, he was constructing optical instruments and taking photos with telescope-mounted cameras. At Texas A&M University, he enrolled in physics, where only one optics course was offered at the time.
“I still remember my astronomy and math professor, Jack Kent. We called him ‘cube root Kent,’ because only the cube root of students in his class would pass,” Munnerlyn laughed. “But I learned a lot from him.”
After graduating with a degree in physics in 1962, marrying his wife Judy in 1963, and serving three years in the Air Force, Munnerlyn attended the Institute of Optics at the University of Rochester—the only university in the nation at the time to offer optics studies.
With a doctorate in optical engineering in hand in 1969, he embarked on a series of pioneering developments. As head of research and development for Tropel Inc., a company that designed custom lenses for applications such as Xerox copiers, Polaroid cameras and space satellites, Munnerlyn designed the first device to digitally calculate refractive errors in the eye. This autorefractor substantially reduced the time it took optometrists to determine the amount of correction needed for a given patient. In 1979, he also developed an instrument to test pressure in the eye to detect glaucoma.
In recognition of the Munnerlyns' generosity to Texas A&M, the Charles R. ’62 and Judith G. Munnerlyn Astronomical Laboratory and Space Engineering Building bears their names.
In 1983, Munnerlyn and Terry Clapham, an electrical engineer and longtime friend, began work on an exciting new technology—the excimer laser. It was an alternative to the common but controversial radial keratotomy procedure of the time, in which the surgeon corrected vision by making an incision on the periphery of the cornea—the clear, outermost part of the eye. The pair’s proposed vision correction system instead used ultraviolet rays from an excimer laser to delicately remove tissue from the cornea. Since the laser didn’t generate significant heat, there was no danger of its beams penetrating the eye and damaging the retina.
“We knew that there had to be a better, safer way to improve vision,” Munnerlyn said. “We just had to prove it. I actually used advanced math from another of Dr. Kent’s courses at Texas A&M to develop the core formula that calculates how much corneal tissue to remove.”
Munnerlyn and Clapham had been working on the excimer technology while employed by CooperVision. In 1987, they purchased the technology and formed VISX Incorporated with the intention of bringing their product to market. After 10 years of scientific refinement, experimentation overseas and in the United States, millions of dollars in investment and mountains of FDA paperwork, FDA approval for the excimer laser system was granted. Today, VISX—now part of Johnson & Johnson—remains the world’s leading manufacturer of laser vision correction systems.
“I couldn’t be happier with the worldwide success of the excimer laser method for vision correction,” Munnerlyn said. "It's extremely rewarding to hear from people who credit LASIK corrective surgery with improving their lives."
In recognition of his achievements, Munnerlyn is both a distinguished alumnus of Texas A&M and the University of Rochester. He and Judy have given back generously to Texas A&M’s astronomy and physics programs, and have also established two scholarships for the Corps of Cadets and a mechanical engineering scholarship in memory of Charles’ brother, James H. Munnerlyn ’58. In acknowledgement, the Charles R. ’62 and Judith G. Munnerlyn Astronomical Laboratory and Space Engineering Building bears their names.
“We feel Texas A&M is one of the greatest universities in the world, and we’ve always been excited by its accomplishments in physics and astronomy,” Munnerlyn said. “I’m proud to play a small part in that legacy.”
For a man of great vision, Munnerlyn himself was not born with 20/20 eyesight and unfortunately, was not a candidate for LASIK treatment. Only recently has cataract surgery improved his farsightedness—a condition that seems somehow appropriate for an innovator with such foresight.


Weapon tested in San Diego over summer
Saying that the future is here, and will be affordable in austere times, the Navy on Monday unveiled a laser weapon mounted on a ship.
The laser was quietly tested last year on the San Diego-based destroyer Dewey. According to a Navy video, the laser knocked down an aerial drone, sending it into the sea in flames.
One Navy official said that the entrance of lasers in naval warfare is akin to the arrival of guns at a knife fight.
Now, the Navy will deploy the solid-state laser about the floating platform Ponce in fiscal year 2014, two years ahead of schedule.
“This capability provides a tremendously affordable answer to the costly problem of defending against asymmetric threats, and that kind of innovative approach is crucial in a fiscally constrained environment,” Chief of Naval Research Rear Adm. Matthew Klunder said in a news release.
The technology gives sailors new options, including the ability to control a laser weapon’s output. That would allow everything from non-lethal disabling all the way to total destruction.
“We expect that in the future, a missile will not be able to simply outmaneuver a highly accurate, high-energy laser beam traveling at the speed of light,” Klunder said.
Following the Ponce demonstration, the Navy and Defense Department will continue to research ways to integrate affordable laser weapons into the fleet, officials said.


Review: Acer SpatialLabs View Series Monitor – Revolutionizing 3D Visual Experience
Unleashing Immersive Stereo 3D without Glasses
By Bruce Green July 11, 2023 1:00 PM
Let’s take a step back from those dreaded 3D glasses that no one really enjoys wearing. We’ve all experienced the discomfort of those big, bulky frames that never seem to fit properly. But in todays world there’s a way to enter a virtual realm without the hassle of glasses or headsets. Acer has turned this...


Mirror Sunglasses consist of an optical coating on the outside surface of the lenses of the sunglasses. This gives the impression of a mirror to the lenses. Such optical coating is also known as flash coating or mirror coating. These lenses usually have a tint that the wearer can experience. This mirror coating is helpful in further reducing the amount of light that passes through the lens by 10% to 60% more as compared to the other sunglasses. The mirror effect is not visible to the user from inside, only the onlookers can see the mirror. Mirror sunglasses are perfect in every weather condition as well as in sand, snow, water, sports, higher altitudes etc.
Why are Mirror sunglasses so called?
Mirror Sunglasses were usually used by the police officials of the United States. Thus, they are also called by the name of ‘’Cop Shades’’.
Mirrored sunglasses contain one layer of a deposited thin film which is made out of suitable metal. This metal coating is responsible for giving mirror effect to the lenses. However, the drawback of mirror sunglasses is that they get scratched easily and also fade away or degrade faster than the other sunglasses. Moreover, they react with the salt-water and may turn rusty or corrosive. This is because the metal film reacts with the salt-water as it is not corrosion resistance.
Nowadays, modern reflecting coatings are highly used in the manufacturing of the mirror sunglasses. This includes a dielectric layer that is made from oxide such as Chromium Oxide, Silicon Dioxide, and Titanium Dioxide etc.
Can I get Mirror sunglasses with Polarised Sunglasses and Prescription Sunglasses?
Indeed, you can get mirror sunglasses with polarised or prescription lenses fitted in plastic or metal frames of your choice. Polarised Sunglasses consist of polarised lenses which are effective in harsh and extreme conditions such as while driving on highway, playing watersports or ice sports, fishing, skiing, climbing, etc. Polarised sunglasses with mirror coating on the lens are helpful in protective eyes by providing enhanced protection to the eyes from blinding and strong rays of light, glares and reflections.
On the other hand, Prescription Sunglasses with mirror coated lenses consist of lenses which have power strength according to the prescription. In such cases, the lens can be single power or multiple power i.e. varifocal lens. Whether you have nearsightedness or farsightedness, nothing can prevent you from wearing mirror sunglasses as long as you can get the lenses according to your prescription. So whether you need mirror sunglasses with distance power, reading power or both (in case of varifocal glasses), you can easily get as per customisation.
Where can I get affordable and attractive mirror sunglasses?
Your search for mirror sunglasses ends with Specscart that manufactures mirror sunglasses including bespoke prescription sunglasses as well as polarised sunglasses. All you need to do is to search the frame that suits your taste, preference, style as well as facial features and let the Specscart do the rest of the job for you.
Moreover, the sunglasses from Specscart are able to block 99.77% of the UV rays as well as the glares to provide 30% enhanced vision clarity.
You can select a variety of mirror sunglasses online from Specscart, upload your prescription and get the express dispatch within 24 hours whilst sitting at home. Apart from that, you can choose the colour of the lenses too.
Check out some of the hottest trending mirror sunglasses from Specscart, that includes designer branded sunglasses from Tom Archer:
1) Mirrored Cat Eye –
Cat eyes mirror glasses, with pointed angles, set in Acetate material of fram, that can not only grace women’s beauty but also the muscular personality of men. You get the option to customise lens according to colour, polarised as well as the prescription.
2) Mirror Metal Frame Sunglasses –
This full rim, acetate and metal frame mirror sunglasses reflects the pattern of Dalmations can make every women envy with its beauty
3) Rose Gold Mirror Sunglasses –
Pink sunglasses with mirror coated lenses come in rose gold shade of frame made from acetate and metal makes the wayfarer shape appealing for women.
4) Mirror Aviator Sunglasses –
The lovely aviator mirror sunglasses are everybody’s delight. This silver frame Aviator with silver mirror look amazing on men or women to give elegant yet cool look


UV Reflex is an additive put in the lure that allows the bait to reflect more UV light. By reflecting more UV light, the stands out better to the fish. All fluorescent colors reflect UV light better than non fluorescent colors. By adding the UV Reflex, it makes every color become a fluorescent color, thus making the bait stand out more getting noticed and eaten!
Here are a few insights on UV light: UV light penetrates water up to 10 times further than visible light. Baitfish reflect UV light UV light can even penetrate dark or murky water UV light is given off by the sun and reflected by the moon. The majority of natural light is reflected off the waters surface but UV light penetrates.


ZedLabz replacement screen lens plastic cover for Nintendo DS Lite [NDSL] - Green
- Replacement plastic LCD lens cover for Nintendo DS Lite consoles.
- Restore your top screen to a like new condition by replacing your scratched lens cover.
- Clear plastic protective cover with coloured boarder surround.
- Front and back protective film protects the lens prior to installation.
- Brand new and compatible with DS Lite only.
If your top screen is scuffed and scratched then you can restore its clarity and appearance by replacing the plastic lens cover with this high quality replacement.
This brand new compatible replacement top upper LCD lens cover will fit any Nintendo DS Lite handheld console.
The replacement has a plastic film on both sides which needs to be removed before installation.


Various Types of Barcode Scanners
Almost every industry or organization uses barcode technology today regardless of its size. Barcodes may appear to be a straightforward mixture of strips and spaces, but they’re the important thing to vital product information. To decode these barcodes, special devices like scanners are used. Barcode scanners are photosensors which read the barcodes and convert them into a readable text that is displayed and stored on a pc or laptop. This appears to be a extended process but it just takes few milliseconds.
Barcode scanners are one of the most widely used tools today. They’re being found in different industries including manufacturing, warehousing, education, healthcare, data capture systems and field service. The high utility aspect and the popularity of the scanners have resulted in the introduction of many varieties.
Barcode scanner varieties are distinguished by their form factor and their scanning technologies. The main difference in form factors is the amount of operator manipulation required. You will find wand or pen-style scanners, fixed-mount scanners, and handheld scanners. Handheld scanners vary the most in available scanning technology. You will find laser scanners, CCD scanners, which are also known as linear imagers, 2D scanners, also known as area imagers, and omnidirectional scanners. The scanning technology must be chosen on the basis of the application and requirements.
Wand or pen-style barcode readers should be swiped on the barcode at a consistent rate of speed and at a certain angle. This makes them the smallest amount of efficient scanner to utilize, but they’re the smallest amount of expensive. They’re also small, extremely durable, and not limited by the width of the barcode.
These scanners read barcodes as they are passed in front of the scanner. They’re widely found in work-in-progress applications and for high-speed sorting along conveyor systems. Smaller models are commonly found in laboratory, security identification, and kiosk applications. Many of these have a laser scan engine, so they should be mounted at a certain angle and distance from the barcodes that may pass in front of them. Unlike others, many of these are usually integrated with other equipment and automation systems.
These are also called CCD scanners, CCD LR (long range) scanners, and full array imagers. The scanning technology they employ uses no moving parts, thus making the linear imager scanners stronger than laser scanners, but they do have a shorter reading distance of contact to two feet. Linear imagers are ideal for reading damaged or poorly printed barcodes and for reading barcodes under plastic film or covering.
Laser scanners are the most used scanning technology in the industry. The brightness and sharpness of laser scanners offer greater preciseness and visibility when targeting a barcode, especially in bright light. These are also for sale in several variations to meet up the wants of special applications, such as long range or high density scanning.
Unlike handheld linear scanners that really must be prearranged perpendicular to the barcode, omnidirectional barcode scanners can read a barcode regardless of how it’s orientated. Therefore, they increase the scanning process and reduce user fatigue. Omnidirectional scanners are usually found in retail environments and can be found in on-counter and in-counter models. On-counter models are good for applications with limited counter space, such as convenience stores. In-counter models are ideal in high-volume applications, such as grocery stores.
2D barcode scanners can capture 2D barcodes in addition to 1D, or linear, barcodes. They’re gaining popularity for their versatility and the future-proofing they feature as an investment. These scanners use a mix of digicam technology and software to capture barcodes. They read barcodes omnidirectionally, so the barcodes can be orientated in virtually any direction. Some models can also capture digital images and signatures.