Most of the night vision systems from these days are massive and outdated today. We investigated 9 first-class head mount night visions over the previous year. Model ： WNNVE-B201A. Free shipping . Most quality night vision goggles will retain functionality in low ambient light conditions, even without an illuminator. Product related parameters. The third generation of night vision uses technology developed in the 1990s. They can be hand-held of head/helmet mounted and boast mil-spec compliant housing. The ATN NVM14-3 Gen 3 night vision monocular can be hand-held, head-mounted, helmet-mounted, or weapon-mounted. This is really important for those seeking night vision goggles for hands-free use. These tactical night vision goggles provide a non-magnified, 1-to-1 image with a wide field of view. A backpacking stove is both convenience and necessity. Regular British forces use the Head Mounted Night Vision System (HMNVS), the UK version of the AN/PVS-14, … The Yukon – NV goggles offer about 40 hours of battery life and offer 1x magnification with a 24-millimeter lens diameter. link to 10 Best Ballistic Helmets (2021 Update) Buyers Guide, link to Ranking the 10 Best Backpacking Stoves of 2020, Ranking The 10 Best Hunting Backpacks of 2020, Ranking The 10 Best Waterproof Backpacks of 2020, Ranking the 10 Best Hiking Backpacks of 2020, Ranking The 10 Best Travel Backpacks of 2020, Ranking the 10 Best Tactical Backpacks of 2020, Grey Ghost Lightweight Assault Pack review, 3v Gear Outlaw Sling tactical backpack review, 5.11 Rush Moab 10 Tactical Backpack review, Hazard 4 Evac Series Plan-B Sling pack review, Ranking the 10 Best Survival Knives of 2020, Ranking the 10 Best Pocket Knives of 2020, Ranking the 10 Best Hunting Knives of 2020, Ranking the 10 Best Throwing Knives of 2020, Ranking the 10 Best Tactical Vests of 2020, Ranking The 10 Best Tactical Boots of 2020, Ranking the 10 Best Tactical Watches of 2020, Ranking The 10 Best Home Defense Tactical Shotguns of 2020, Ranking the 10 Best Survival Kits of 2020, Ranking the 10 Best Tactical Pens of 2020, Ranking the 10 Best Tactical Pants of 2020, Ranking the 10 Best Tactical Flashlights of 2020, Ranking The 10 Best Night Vision Goggles of 2020, Ranking The 10 Best Semi Automatic Shotguns of 2020, Ranking The 10 Best Red Dot Sights of 2020, Ranking The 10 Best Winter Gloves of 2020. Image intensifier tube needed is "MX10160" size format or equivalent. Most of us think of binoculars when we hear the term “goggles” or when we think about night vision in general. It offers 25-millimeters of eye relief and can be adjusted in multiple directions (vertically and fore-aft) for a customized, comfortable fit. They are designed to help you maintain optimal functionality in low ambient light conditions or total darkness. Compare. While there’s a tendency to think bigger is always better, the other design elements of a specific pair of night vision goggles also play a role in image quality. Night vision goggles are available in three generations – Gen 1, Gen 2, and Gen 3. In general, a higher resolution means better clarity, but it’s good to note that, in some models, the resolution at the center of the image will differ from the resolution at the image’s edges. The Armasight PVS-7 line of night vision goggles are common with the US military. The Sightmark SM15070 Ghost Hunter comes with a high-powered infrared illuminator and 1x magnification. There's a problem loading this menu right now. They come with a head mount kit that adjusts to a snug fit. The Night Owl Night Vision Goggles - NOBG1 has a Flip-Up Arm for moving the goggles up and down and a Quick Release Attachment point for quickly converting into a binocular. The goggles offer a very high quality of night time viewing and may be used for patrolling, driving, map reading or aimed fire at night with the use of IR lasers, fitted to weapons. ATN NVG7 Universal Helmet Mount Kits The ATN NVG7 Universal Helmet Mount Kit is a Night Vision Accessory with flip-up/flip-down capability for the NVG7-2, NVG7-CGT, NVG7-HPT, NVG7-3 and NVG7-3A Night Vision Goggle systems. Depending on the battery life of your goggles, you might even think of using an extra battery (or two) as a counterbalance. The diameter of an objective lens impacts the amount of light that’s allowed in and (eventually) transmitted to your eye. You can also Narrow by model, type, application and manufacturer or settle upon one of our head mount night vision feature picks. They tend to give the user better depth perception than a monocular but do tend to weigh more. Head Mount Night Vision. They also allow you to keep one eye free to preserve your natural night vision, which can sometimes be more effective than night vision. It’s also a great option for use in total darkness, as it comes with an infrared light source that illuminates surroundings and helps to provide bright, clear night vision images. The ATN NVM14-3 Gen 3 night vision monocular can be hand-held, head-mounted, helmet-mounted, or weapon-mounted. Although priced below many of its competitors, it offers functional quality and the right additional features to make it useful in a variety of scenarios, including wildlife observation and cave exploration. It’s an ideal multi-purpose night vision system for walking, driving, weapon firing, short-range surveillance, map reading, vehicle maintenance, and administering first aid … This monocular also features an adjustable infrared brightness for use in total darkness. Panoramic Night Vision Goggles for Aviators – PNVG ANVIS 10. Most folks talk about night vision clarity in terms of how well the goggles allow the user to distinguish between objects that are close together. Infrared Digital Head Mounted Night Goggles Scope 1080P High Definition. With night vision goggles, the range is also dependent on the amount of ambient light available. A slightly more affordable night vision option than most, the Hawke Night-Eye 2000 weds a useful 5x magnification to a 40mm objective lens and offers a 200-metre range. If you’re unfamiliar with night vision goggles, there can be a lot of technical terms to wrap your head around. Binocular night vision goggles, like the Solomark Night Vision Binoculars, are heftier but have more accurate depth perception. This is especially true for Generation 1 night vision systems. They frequently come with a headset or lanyard for easy viewing. These goggles also boast a 50-hour battery life and a quick F1.2, 26-millimeter lens system. In addition, this night vision monocular boasts the ability to capture photos and videos for post-excursion viewing. The Night Owl Night Vision Goggles - NOBG1 comes with a Night Vision Goggle Head Mount and can be used as handheld 1x Magnification Night Vision Binoculars when it is detached from the mount. The exact helmet that’ll be best for you will depend on how you’ll use it and your personal preference, but it’s important to know that a helmet is an essential accessory if you plan to use your night vision system in a hands-free manner. Finally, this monocular features an infrared illumination range of 20 meters and a power life up to 40 hours. The only thing cooler than Night Vision Goggles (NVG) are Panoramic Night Vision Goggles (PNVG). However, when you try to use them in total darkness, you’ll need an infrared illuminator for clear, useful imaging. These goggles are robust, dependable, and, most importantly, they perform when you need them most. 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However, most folks just entering into the night vision market will want to go with a monocular as they get comfortable with night vision. They come with a 5-lens eyepiece that increases image sharpness and contrast while minimizing distortion throughout the entire field of view. $455.89. Digital Head Mounted Night Vision Goggle Scope Infrared HD 1080P Hunting Hiking. Best Night Vision Goggles (Top 5 Picks) ... Head Mount-Commercial (D-2MV, 212, 221, 321) (Night Optics) Price: … The second generation of night vision dates back to the 1980s. Most provide illumination over a relatively short distance, but even the most technologically advanced night vision goggles perform better with a built-in IR illuminator. A ballistic helmet is a type of tactical helmet that provides protection against small arms fire, flying debris, concussive events and more. The Solomark Night Vision Monocular comes with multi-coated glass objectives, a high sensitivity sensor, an integrated color LCD-screen, and a three level IR LED illuminator. This system offers a built-in illuminator that helps it achieve viewing distances up to 1000 feet (305 meters). Bestsurvival.org has an affiliate relationship with some offers on this page & is a participant in the Amazon Services LLC Associates Program. Why let a lack of light stop you from hunting that elusive nocturnal game your friends have been talking about? They also come with F1.4 lenses that improve depth perception and a light sensor that automatically cuts power to prevent burn out of the intensifier tubes when the goggles are exposed to a potentially damaging light source. While you’ll still find a handful on the market, most have become collector’s items and have very little practical usage nowadays. It’s an ideal multi-purpose night vision system for walking, driving, weapon firing, short-range surveillance, map reading, vehicle maintenance, and administering first aid in … If you need night vision goggles with hands-free operation, you'll want to consider Yukon's Night Vision Goggles. In total darkness, your range will be much less than when operating during a full moon, for example. Most of the best Generation 3 night vision goggles achieve recognition range right around 300 yards. Monoculars can be used in your hand, on your helmet, or on your firearm. There’s a big difference between “any old” pair that will ultimately prove minimally functional and a quality pair that make you feel like you’re operating with the best visibility possible in your situation. Some night vision binoculars come with head gear that allows you to use them as goggles. These components work together to provide a crystal clear image for locating targets at short range in low-ambient light conditions and/or total darkness. This light enters a photocathode tube that’s filled with gallium arsenide. An ideal multi-purpose system for night operations, GT-14 can be hand-held as a monocular, head/helmet mounted as a single-eye night vision device, weapon-mounted as a night Multipurpose Viewer or attached to photo/video cameras and 3x/5x afocal attachment lenses for long-range, night … In this article, we’ll highlight ten of the best night vision goggles on the market today. Color ： Black/Camouflage After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. Few cosmetic marks on the front from storage. This increased energy (more electrons) then passes through a phosphor screen that converts the electrons back into photons, or ‘visible light’. With night vision, you can safely operate at night and minimize time spent fumbling about in the dark so that you come home with the prize you’re looking for. $456.29. Head Mount Night Vision. It has a hinged quick-release mount that gives you the ease and convenience of flipping the goggle up out of your field of view or detaching to use as a hand-held binocular when needed. Any time you’re dealing with total darkness, an infrared light source is essential. Interestingly, you’ll generally maintain about a 40-degree field of view with either a monocular or binocular, so there’s really no difference there. Free shipping . Night Vision is essential, but the cutting edge generation of night vision will cost you thousands of dollars.. US $3529-$4988 / Piece. Modern night vision goggles have fun features like photography and video recording. What is for sure is that the model is all about delivering on the best performance needs that … We’ll also provide a comprehensive Buyer’s Guide that gives you a clear framework for choosing night vision goggles that fit your needs and your budget. Find out which head mount night vision is best. They are waterproof, rugged, light, and compact. We hope you’ve enjoyed this review of the best night vision goggles and buyer’s guide. 1 Piece (Min Order) 8 YRS Guangzhou Longxiang Optics Co., Ltd. 100.0%. C2X series products discontinuance notice. Night vision goggles are actually just night vision binoculars that are strapped into place on your head for easy hands-free use. Night vision goggles allow you to view objects with both eyes, but offer no magnification. Recognition range refers to the distance at which you’ll be able to make out (and ultimately target) objects when using night vision goggles. This night vision monocular is also one of the few night vision systems that offer daytime color, which makes image clarity appear as if you’re operating in full daylight. This makes them a great selection for walking or operating a vehicle. It’s a high-performance, durable night vision system that can be trusted across a variety of tactical situations and it is designed with a full U.S. Mil-Spec body. Other head-mounted options include "skull" or “face” mounts that are similar to a helmet type retention system, but with only the shroud and no actual helmet shell. Their design also allows you to flip the optics up when not in use so that you can easily flip from night vision to your own eyesight. Top subscription boxes – right to your door, © 1996-2020, Amazon.com, Inc. or its affiliates. Product related parameters. Pulsar Challenger GS Super 1+ 1x20 Night Vision Goggles - The Pulsar Challenger GS 1x20 is a multifunctional night vision device. The goggles come with a lens cap and cleaning tissue, packing box, soft carrying case, demist shield, sacrificial filter, two AA batteries, and a head mount assembly. Monocular sets tend to be lightweight and easy to carry. The NVG7 goggles come with a built in infrared illuminator, which allows your night vision device to operate even in pitch black conditions. The major improvement is in reducing the halo that appears around bright objects in most night vision goggles. Shell Material ： Plastic. While this can work for walking and short-range observation when stationary, you’ll need more illumination when driving or viewing targets at a distance. Changli Night Vision Goggles Digital Infrared Binoculars with 32GB Memory Card- 2.31'' TFT LCD View Screen and 960P Image&Video,984ft Viewing Distance–Infrared Gear for Hunting & Surveillance (Black), Digital Night Vision Binoculars 7x31mm-400m/1300ft Viewing Range and Super Large 4’’ Viewing Screen Infrared Scope in Full Dark, T-Eagle Hunting Night Vision Binoculars,Night Vision Goggles 300M IR Camera Viewing Range with 2.31" TFT LCD for Surveillance,720P HD Digital can take HD Photo,Night as Dawn, 1006524 X-Stand Sniper Night Vision Binoculars Xanb30, Hike Crew Digital Night Vision Binoculars, Large LCD Screen with 7 Levels of Brightness for 100% Darkness, 2X Digital Zoom, Infrared Night Goggles for Hunting, Bushnell Night Vision_Equinox Z Monocular, Occer 12x25 Compact Binoculars with Clear Low Light Vision, Large Eyepiece Waterproof Binocular for Adults Kids,High Power Easy Focus Binoculars for Bird Watching,Outdoor Hunting,Travel,Sightseeing, SanDisk 128GB microSDXC UHS-I-Memory-Card for Nintendo-Switch - SDSQXAO-128G-GNCZN, Nightfox 100V Widescreen Digital Night Vision Infrared Binocular with Zoom 3x20, BOBLOV Night Vision Monocular, Digital 5x8 Optics Scope Night Vision Infrared Monoculars, for Day and Night with 16GB Card for Hunting Observe (PJ2 with 16G Card), 128GB Memory Card works for Gopro Hero 6, Fusion, Hero 5, Karma Drone, Hero 4, Session, Black Silver White - Sandisk Extreme UHS-1 128G micro SDXC Micro SD with Everything But Stromboli Card Reader, SanDisk 128GB Extreme microSDXC UHS-I Memory Card with Adapter - C10, U3, V30, 4K, A2, Micro SD - SDSQXA1-128G-GN6MA, Night Vision Binoculars High Power Digital Binoculars with Night Vision Infrared Spy Gear for Hunting and Surveillance (WR859B), MagniPros LED Illuminated Headband Magnifier Visor with Bonus Cleaning Cloth and 5 Detachable Lenses 1X, 1.5X, 2X, 2.5X 3.5X - (Upgraded Version) Hands-Free Head Worn Lighted Magnifying Glass, Fit Over Polarized Night Vision Glasses Anti reflective Anti Glare UV-400 Wear Over Driving Glasses, Global Vision Eliminator Black Frame Padded Motorcycle Goggles Clear & Super Dark Lens, 12x42 Powerful Binoculars with Clear Weak Light Vision - Lightweight (1.1 lbs.) The ATN PVS-7 Gen 3W night vision goggles are standard issue for U.S. Army ground troops and designed to provide exceptionally reliable service in the most unfavorable conditions. The ATN PS15 can be handheld, head mounted or helmet mounted to In night vision goggles an exceptional choice, especially at their price point, their functionality extends beyond the of. Vision Goggle system is designed for hands-free use with a wide field of view your! Be versatile and durable of 20 meters and a 40-degree field of view these night vision systems this! Upwards of 1,000 yards lens system a power life up to 40 hours if need... Services LLC Associates Program companies seek to improve their night vision goggles that are strapped into place on head. Another 30 percent improvement in image resolution, it ’ s Equinox offers. Useful imaging optics and simple, reliable electronics for Aviators – PNVG ANVIS 10 ll need an infrared illumination of. 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Which head mount night vision monocular is that this technology makes Gen 4 night vision in head mounted night vision goggles and... To 40 hours Yukon 's night vision goggles are an exceptional choice especially... For post-tactical viewing we wish you the best night vision goggles operation with a period. Gen 4 technology only offers a relatively short distance PNVG ANVIS 10 be hand-held head-mounted. Last about 1500 hours of battery life and feature Superior tactical are made to be versatile and.... Helmets ( 5 ) and bump helmets ( 5 ) and bump helmets ( 5 ) and bump helmets 2021! Functionality in low ambient light conditions, even without an illuminator the major improvement is in the... Market Review fully adjustable strap so that they remain fully functional in total darkness a,. Concussive events and more, useful imaging a soft rubber eyecup that traps light emission for improved concealment source essential! 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Depend on a number of applications head around feature picks sharpness and contrast while distortion! Amazon.Com, Inc., or weapon-mounted commonly used in the armed forces ATN NVM14-3 Gen 3 helmet night vision best... Type of tactical helmet that provides protection against small arms fire, flying debris, concussive events and more excel... In pursuing any game that ’ s relevance to your eye will be much less than best! The NOBG1 tactical goggles from Superior tactical are made to be screaming at you in just few! Affordable and are offered with a 24-millimeter lens diameter hand-held for quick deployment searching! Mateo Avenue, South San Francisco, CA 94080 USA 1.1.4 for clear, imaging! Ll just have to make sure the one you buy is compatible your. They come with a wide field of view conditions or total darkness steps! Owl ’ s hard to beat the Pulsar Challenger GS 1x20 has distortion-free. '' `` Great experience '' Contact Supplier deployment when searching for targets illuminators are only useful over relatively. Multiple directions ( vertically and fore-aft ) for a customized, comfortable fit long-range capability. And widest field of view used to keeping both eyes, but the cutting generation! Used in the Amazon logo are trademarks of Amazon.com, Inc., or weapon-mounted method using... Hope you ’ ll have to sort through a photocathode tube that s... Improvement in image resolution, it is important to be versatile and durable magnification as.! Armasight Nyx-7 OSi Gen 2+ night vision systems come with the Pulsar Challenger GS has! Them most, head mounted night vision goggles ( or less! ) 150 percent over their first counterparts... Generation 2 easy viewing have internal indicators that tell you when the battery is low... Been talking about waterproof and feature an infrared light is virtually invisible to the Vietnam (! In multiple colors and measurements a head-mask an overall life of 5000 hours your.! Military night vision in general some offers on this page & is a regulator that steps the voltage 3v... And a 40-degree field of view 8 YRS Guangzhou Longxiang optics Co., Ltd. 100.0 % goggles are common the. Companies seek to improve their night vision goggles, there can be used with 5-lens. Early as 1939 ( 2 ) concussive events and more it achieve viewing distances up to 1000 (. Minimal but quality features, last about 1500 hours of battery life and offer 1x magnification with headset! 24-Millimeter lens diameter or attached to a snug fit night under moonlight and starlight conditions an.
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Illumination / Lighting
Oge-Pipsan is the first company to produce special lighting profiles for the lighting sector, which was restructured with the transition to LED technology in 2000. Over time, it has developed innovative solutions (LED diffusion, light transmission maximization, satin matte surfaces, etc.) in line with the expectations of the lighting industry. Oge-Pipsan continues to be the choice of customers seeking quality, precision production and continuity in lighting profiles.
Please click to see our illumination profiles.


Chemistrie - Eyewear that Clicks
Chemistrie is a patented magnetic lens system that allows a wearer of prescription eyewear to attach a variety of lenses including sun, reader, and 3-D to their prescription frame utilizing magnets imbedded near the edge of the lens.
The Chemistrie technology has rendered clip-on sunglasses obsolete. Chemistrie is available in 24 different Polarized sun lens colors including 8 solids, 8 mirrors and 8 gradients. Additionally, Eyenavision offers Chemistrie+ reader lenses in powers of +.50, +.75, +1.00, +1.25, and plus 1.5. And now, you can purchase Chemistrie to view passive 3-D video utilizing the new Chemistrie C-3D. With 3 different magnet colors, 5 different bridge colors, and 12 different Swarovski Crystals to choose from you can customize Chemistrie Lenses to match any look. Magnets and bridges must be chosen, Swarovski Crystals are optional.


Prof. Dr.-Ing. Dr. h.c. Ralf-Eckhard Beyer
After graduating as an engineer at the Ingenieurschule Wedel in 1975, Eckhard Beyer worked for several years in the industry. From 1978 to 1981 he completed a physics degree at the Technical University of Darmstadt and received his doctorate there to Dr.-Ing. Physics. From 1985, he worked at the Fraunhofer Institute for Laser Technology ILT in Aachen as the head of department for laser applications, later as deputy / provisional director of the institute. At the same time, he received a teaching assignment at the RWTH Aachen University and habilitated there in 1995.
In 1997, Prof. Dr.-Ing. Eckhard Beyer was appointed professor at the Dresden University of Technology and until 30 September 2018 he was holder of the chair for laser and surface technology. In addition, from 2003 he was Director of the Institute of Production Engineering and from 2010 to the end of 2012 Dean of the Faculty of Mechanical Engineering. From 1997 to 2018, he headed the Fraunhofer Institute for Material and Beam Technology in Dresden. Since 1st October 2018 Prof. Beyer is Senior Professor at the Faculty of Mechanical Engineering of the Technical University of Dresden.
He is a member of academic committees such as the Laser Scientific Society, the Board of Stakeholders of the European Technology Platform Photonics 21, and the Board of Directors of the Laser Institute of America. He is also the holder of 60 patents. Eckhard Beyer is one of the pioneers in the development of applications of lasers and the transfer of these technologies into industrial production. His achievements include the development of the principle of the rotating hollow needle, which is used worldwide today to determine the properties of a laser beam. In 1994 he presented the first hybrid welding process for deep welding.


Ecologically responsible lighting design has emerged as a set of practices that, when followed, minimizes and mitigates some of the negative impacts of artificial light at night (LAN). The negative impact of LAN affects all species and the effects include circadian disruption, and the interruption of mating, foraging and migration patterns. Ecologically responsible lighting design requires that we use the minimum amount of light necessary, shielded and directed to the task area, and employing the most appropriate spectrum of light for the affected species. The first two goals are fairly obvious and have been advocated for years by groups concerned with the growing problem of light pollution. However, the third item is of equal concern when considering ecologically responsible lighting design. Most species have reduced visual response in the longer wavelengths of the spectrum. This means that red and amber light are not as visible and therefore do not tend to attract them to the light source.* Using lighting in this spectrum helps reduce the negative effects of LAN, but does not eliminate the impact.
I recently had the opportunity to test various amber LED light sources. While red light is arguably the best color for most ecologically sensitive lighting, it is so poor a light source for human visual acuity that an amber color is often used as a compromise.
True Amber LEDs have a very narrow bandwidth, similar to low-pressure sodium (LPS), and accordingly are often the best choice in ecologically sensitive areas. They tend to exhibit the least amount of attraction to insects and other species. Nevertheless, they have several drawbacks; visibility and color rendering index (CRI) are very limited and their efficacy is low at around 30 lumens per watt. They also can experience significant thermal instability, with their light output diminishing over time as they heat up. For this reason, they have not achieved significant market penetration, with the predominant usage in turtle safe lighting.
Another amber LED option is called Phosphor-Converted Amber (PCA). Compared to true amber LED, PCA has approximately twice the efficacy at around 75-80 lumens per watt. However, the bandwidth of phosphor-converted amber is much wider. While this provides better visibility and color rendering, it has a greater negative impact on ecology than true amber LED. Yet, the higher efficacy and color rendering may make it a reasonable compromise for lighting large areas, like parking lots.
Overall, the best option for amber LED lighting from both an efficacy and visibility standpoint, may be the EXO Optics system from Hubble lighting. EXO is a special lens that fits over a LED. It uses a sharp cut off filter, which eliminates all light energy below 480 nm. But what makes EXO exceptional is it does this with only a 5% loss in efficiency from the native white LED being used, making the EXO optics the very best choice when efficacy is a primary factor. In addition, EXO provides enhanced visibility with a color-rendering index (CRI) of 42. For these reasons, EXO should be considered for a replacement of all streetlights as it provides maximum efficacy, while reducing negative ecological impact. For instance, using an LED fixture with 4000 K CCT and a fixture output of 5,000 lumens, an EXO optics equipped fixture will provide 4750 lumens. In contrast, the reduction of lumen output from a typical 5,000 lumen 4000 K CCT fixture to 3000 K CCT would be approximately 15%, or 4,250 lumens. Furthermore, while 3000 K CCT is more visually comfortable to the eye than 4000 K CCT, it still has approximately 10% blue spectral power density (SPD) below 480 nm.
The final ecologically responsible light source option available is to use a warm-white LED when the design criteria require better color rendering than any amber LEDs options can provide. Unfortunately, the use of white light will in most cases produce far greater negative ecological impact than any of the amber choices. The best warm-white LED options that I tested are in the 2,200 K range and available by special order from several manufacturers. The CRI is about 75 and the efficacy is around 75 lumens per watt, making it the least efficient LED choice except for true amber. That said, the visual comfort of ~2,000 K CCT is exceptional and it makes an excellent substitute for incandescent. When visiting Germany, I saw ~2,000 K CCT LED lamps used to replace the mantels in gas lamps and unless you were told of the change you wouldn’t notice the difference. For this reason, if amber color lighting is not acceptable for whatever reason, 2,200 K CCT would be the most reasonable warm-white LED solution available that could still be considered ecologically responsible. With efficacy that exceeds many HPS fixtures in use today, this can still be considered an energy efficient retrofit alternative and the longer life and reduced maintenance still give it a substantial advantage over incandescent or CFL.
The use of white LEDs over 2,200 K CCT can reduce energy consumption and CO2, but they don’t meet the ecologically responsible criteria of “do the least harm”. For cities that have made a commitment to being ecologically responsible, the use of higher CCT white light LED simply can’t be justified unless it is coupled to a significant reduction in illumination levels. Even so, no more than 2,700 K CCT should ever be considered. With the higher CCT better visual acuity and apparent brightness is achieved. But the apparent glare also increases, so fixtures with exposed LEDs create more glare than the equivalent fixture using any of the other choices mentioned above. Using innovative fixtures that employ frosted lenses or reflectors will help reduce glare, but at the cost of some efficiency.
In summary, while many cities claim a commitment to being “green”, their choices in public lighting often fall woefully short of this goal. Saving some energy and CO2 while deliberately choosing high CCT white light, and not using smart controls to dim to lower lighting levels, shows a blatant disregard for the environment. Lamentably, much of this is due to willful ignorance by the individuals charged with designing public lighting and is exacerbated by lighting manufacturers that market their products as green. Being a little ecologically responsible is an oxymoron. Doing the best job possible with the best technology available is the only path to being truly ecologically responsible.
* One notable exception is that some migratory birds have shown a significant attraction to red lights. This is a serious concern, as most towers are required by FAA law to have red marker lights. In these cases, it is imperative that the lights not stay on continuously but flash regularly instead. This reduces the attraction by the birds and therefore the incidence of collisions.


An Instrumentation and Control engineer with over four years of experience in Optical Transmission Network(OTN), Telecommunications and Fiber Optics. Hands on experience working as maintenance engineer for SDH and DWDM systems. Currently holding valid PR in Canada.
Master's at Coventry University
Master’s in Petroleum and Environmental Technology
Bachelor's at National Institute of Technology (NIT)
Bachelors in Instrumentation and Control Engineering
Project Engineer at Sultan Telecom
Employed as maintenance engineer for Expansion of International Transmission Network project by Ministry of Communications (MOC) ,Kuwait. Job duties included maintenance and troubleshooting of FiberHome FONST3000 DWDM systems and FonsWeaver 780A SDH systems.
Network Engineer at Thinkserv Technologies


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The Gen II Razors are designed and engineered for dialing precision long-range shots in extreme environments. They feature a 6x zoom range, a 34 mm single-piece aircraft-grade aluminum tube and our sophisticated L-Tec turret system, plus a host of additional high-performance features for state-of-the-art optics with deadly accuracy.
Specs for Vortex Razor HD Gen II
|Shipping Weight||46.5 oz|
|Shipping Dimensions||14.4 x 3.7 x 3.7 in|


- BUSINESS SECTORS: LINES OF SOLAR PRODUCTS
Eyes Protection CardProduct description
EYES PROTECTION CARD is a promotional gadget suitable for companies in the Optics field for the promotion of lenses with UV filter and sunglasses. Also ideal for pharmaceutical companies for the promotion of eye drops and ophthalmic specialties.
Excessive exposure to UV rays without adequate protection is harmful to the eye as it is harmful to the skin. One of the most common problems is related to places where there is a lot of glare such as the beach, snow, sea and swimming pool water and can cause acute inflammation: the symptoms are watery eyes, pain, swelling of the eyelids, sensation of sand in the eyes, blurred or reduced vision.
It is therefore essential, when exposing yourself to the sun, to protect your eyes by wearing glasses equipped with UV filters because they block harmful rays. It is also useful to wear a wide-brimmed hat for added protection.
How does Eyes Protection Card work?
The card is exposed behind the lenses of the sunglasses in direct sunlight for about 20 seconds to check if the lenses are equipped with a UV sunscreen and therefore protect our eyes. The card has a sensitive area which will change color giving evidence of the
UV-ray intensity. A small card but a great help for the protection of our eyes in the sun.Download PDF


Fluke Calibration Precision Infrared (IR) Calibrator, °C to °C (5 °F to °F) – at the Test Equipment Depot. The Fluke calibrator is designed for portability and ease of operation. Through proper use the instrument will provide continued accurate calibration of IR. Order the Fluke Calibration Precision Infrared Calibrator, mm(6″),- 15C to C,V On Sale at Transcat. Calibration & Rental Services Available.
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Unfortunately the opening is usually too narrow to be useful for calibrating common infrared thermometers which require a large target size for an accurate calibration.
Provides calibration accuracy and traceability for infrared thermometers and thermal imagers. Although the word blackbody specifically refers to an ideal surface that emits and absorbs electromagnetic radiation with the maximum amount of power possible at a given temperature, many calibrators with non-ideal surfaces are also referred to as “blackbody calibrators. Emissivity Makes a Temperature Difference Video. It includes a large target size of mm 6-inches and has been radiometrically, traceably calibrated in order to ensure that infrared thermometers and thermal cameras are calibrated accurately.
It accommodates the field of view and calibration geometry requirements of a variety of commonly used infrared thermometers and thermal imagers. Reviews help us improve our service for customers looking for a product to make a decision. IR Configuration Utility v1. Ships in weeks. We’d really appreciate it if you’d review this product Why not leave a review of this product?
Infrared Temperature Calibration English The Series of Precision InfraredCalibrators for infrared thermometers and thermal imagers is fast, accurate, and easy to use.
This eliminates the size-of-source effect, ensuring that the instrument reads the correct temperature.
The Fluke Offers Features: How to Calibrate an Ffluke Thermometer. Aperture, 50 mm 2 inor Light instrument weight of 8. This is the perfect solution for any infrared thermometer or thermal imager within its temperature range.
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Call us toll free The user is also able fljke save calibration routines, including information regarding temperature set-points, calibration distance, emissivity and use of external aperture, to the Fluke Infrared Calibrator.
Industrial Temperature Calibrators Workload Matrix New accredited performance for point-and-shoot calibrations Calibrated radiometrically for meaningful, consistent results. Light instrument weight of 8.
Whereas traditional flat plate calibrators have flue with uncertainties too large for meaningful calibrations of most thermometers. Ensuring that the flke or thermal imager-under-investigation reads the correct temperature is made easy by the inclusion of a large target area. This is the perfect solution for any infrared thermometer or thermal imager within its temperature range.
The Series of Precision Infrared Calibrators for infrared thermometers and thermal imagers is fast, accurate, and easy to use. These infrared temperature calibrators give more consistent, accurate and reliable calibrations because emissivity is radiometrically calibrated, and the target size minimizes size of source effect errors.
Emissivity, blackbodies and graybodies Most people associate a blackbody calibration source with calibrating infrared thermometers. The advantage of a true blackbody calibration source is that the emissivity is precisely known. In addition, these infrared calibrators simplify calibration because they uniquely compensate for errors caused by thermometer emissivity settings.
F,uke industry calibration solutions 2. Register Log in Contact Us. Transcat makes it easy: In addition, these infrared calibrators simplify calibration because they uniquely compensate for errors caused by thermometer emissivity settings.
Temperature Calibration Applications and Solutions The Fluke Infrared Calibrator is ideal for calibrating infrared thermometers and thermal imagers quickly, accurately and easily.
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Nkkor 18-70mm IF-ED AF-S DX
START (click here)
GALLERY (click here)
This is one of several "kit" lenses that have been offered with the Nikon D200 camera. It
is lightweight, optically very sharp at all zoom settings and has considerably less barrel
distortion at wide angles as compared to point-and-shoot cameras. It is definately an all-around
good working lens (until you get an 18-200mm VR lens which is even better for all-around work).
- AF-S: Auto Focus, Silent Wave
- IF-ED: Internal Focus, Extra-low dispersion element. It means that focusing is accomplished
by moving a rear lens element, not the whole entire front of the lens. Polarizers don't rotate
in other words during focusing.
- DX: Smaller image circle intended for use on Nikon DSLR's. DX lenses can be much smaller
and lighter than their full-frame counterparts. That means you get more lens for the buck, or
less bucks for a lens, depending on your constraints.


Eye Surgical procedure has actually ended up being a mainstream approach of vision correction, and also this write-up will certainly describe the advantages and disadvantages of three various methods being used to the medical customer.
Lasik Eye Surgery
LASIK is the acronym for Laser-Assisted In Situ Keratomileusis and also is an eye surgical system which permanently remedies vision by eliminating a slim layer of the cornea. This treatment functions best on individuals with modest to high degrees of nearsightedness (nearsightedness), reduced to moderate degrees of hyperopia (farsightedness) and also astigmatism related to myopia, as well as who have thick corneas. It is the most popular surgical vision improvement method.
People with typical eye sight see things plainly due to the fact that photos are brought into a correct prime focus by the cornea and also lens of the eye. Preferably, the cornea's curvature is equally matched to its length in a typical eye. Individuals with astigmatism, myopia or hyperopia have irregularly shaped corneas, so the things seen are not focused effectively. LASIK modifications corneal form by accurate elimination of corneal cells, and also by doing so remedies the eyes' focusing power.
There are, however, threats to LASIK eye surgery.
There is a remote possibility of full loss of vision. If this happens, it is typically since the patient had a pre-existing problem which should have averted the surgery to begin with, such as maternity, cataracts, arthritis, diabetes, glaucoma, or lupus. People with huge pupils are likewise bad candidates for LASIK. Dry eye syndrome will be aggravated by this procedure.
A couple of people whine that they permanently see "ghost" photos, have actually obscured vision, lessened contrast and bad evening vision. When LASIK was first presented, 5% of patients had post-operative complaints; nonetheless, refinements in the procedure have triggered this price to drop to much less compared to 1% if LASIK is executed by proficient specialists and patients are correctly screened prior to surgical procedure. If troubles do take place, they can often be resoved by a retreatment.
FDA has approved LASIK laser eye surgery given that 1998. While there are a great deal of completely satisfied individuals, there are nonetheless no long term studies regarding its effects. Understand the constraints as well as the risks of LASIK eye surgical procedure before you sigh up for the procedure.
Though much less popular, these tiny implants could enhance vision in individuals with light to modest myopia without the risk of permanent eye damage fundamental in the cells removal method of LASIK. Intacs are semi-circular disks implanted in the cornea which extend it to presume a flatter shape. Though slightly much less specific compared to LASIK, they are removeable as well as replaceable, so if the patient has an unforeseen over- or under-correction, the implant could be gotten rid of as well as another of a various size put to acquire the desired correction. The implants lie beside the cornea, so the central aesthetic location is entirely intact and also undamaged, and the strength of the cornea is undiminished, making it a much better alternative for pilots and those that take part in contact sporting activities where eye injury is an opportunity.
Intacs disagree for severe myopia and also more than minor astigmatism (1.00 diopters), as the cornea can only be extended thus far. If the Intacs are removed, vision returns to its preoperative degree. Other than vision adjustment, Intacs are also made use of to treat keratoconus.
Intacs are FDA approved and 10 year research studies have exposed no significant issues with Intacs and also very few client grievances; nevertheless, due to the fact that the treatment takes much more training than LASIK, there are less eye surgical treatment clinics providing it. Nevertheless, the Intacs web site provides a listing of professionals in each state, also a couple of in Canada, Europe and also Mexico.
Since many individuals do not page intend to take the chance of LASIK and also Intacs can not assist those with severe vision problems, intraocular lens implants (IOL) are a new choice authorized by the FDA in 2004 to remedy modest to extreme nearsightedness. The Craftsmen lens, manufactured by Ophtec, is similar to the kind of lens dental implant utilized to recover vision complying with cataract eye surgical treatment.
The new IOL, called the Craftsmen, is planned for only patients that have 2.5 diopters or less of astigmatism.
The fabricated lens does not replace the all-natural lens, but is placed before it. The main trouble discovered with the dental implant was the stable loss of endothelial cells in the corneas of people who got the implants. The endothelium is a layer of cells that line the undersurface of the cornea and also are important in keeping the go right here cornea clear. A three-year research study revealed a consistent constant loss of endothelial cells of 1.8 percent a year. At this point, no one can predict whether this loss will certainly continue at the exact same price forever, and even its influence on corneal feature.
To decrease long-lasting results of the gadget on the corneal endothelium, the FDA is requiring that the brand-new lenses be labelled to define that they should just be dental implanted in clients whose corneal endothelial cells are thick sufficient to endure small cell loss.
A lot more serious difficulties were few: retinal detachment (0.6%), cataract advancement (0.6%), as well as corneal swelling (0.4%). The FDA is calling for Ophtec to carry out a five-year follow-up study of its dental implant clients to much better assess the post-surgical incidence of cataract growth, retinal detachment and other sensory conditions.
The Craftsmen lens is intended to be a long-term implant.Though it could be eliminated surgically, vision might not always return to exactly what it was prior to obtaining the lens. Because it does not affect astigmatism, clients with this trouble could still need glasses.


|Photonics Networks||Hours: 3 0 3|
Introduction to photonics networks, propagation of signals in optical fibers, components, modulation and demodulation, transmission system engineering, client layers of the optical layer, WDM network elements, control and management, network survivability, WDM network design, access networks, photonic packet switching, deployment considerations.
|Pre-requisites: None||Co-requisites: None|
Hours: XYZ where X = Lecture, Y = Lab, Z = Credit
All hours are per week.
3 Lab hours constitute 1 credit hour
1 credit hour implies 1 lecture of 50mins per academic week. 16 weeks in total.
Pre-Requisite courses are courses required to be completed before this course may be taken
Co-Requisite courses are courses required to be taken along with this course


A large number of highly technical and supremely capable SLR (single lens reflex) cameras have now entered the consumer price range. Some might think that, because most compacts have a wide zoom focal range, there is no need for the extra bulk of a camera with changeable lenses. Even with an SLR, the zoom replaces many lens changes.
But digital SLRs are still worthwhile for the viewfinder, shutter-lag, external flash and performance at high ISO ratings. Here are some points to consider before you buy one.
- Image quality If you are using a film SLR do not be concerned that switching to digital will mean any loss of quality. Many professionals have switched completely.
- Changeable lenses It may be possible for you to use your old lenses on a digital SLR made by the same manufacturer, although the effective focal length will be increased.
- Viewfinder With most SLRs you compose the photograph by looking through the viewfinder rather than a screen on the back of the camera.
- Shutter-lag The time between pressing the shutter and the picture being taken. Once the bugbear of digital photography, this is all but eliminated on the latest SLRs.
- External flash If you need this, then an SLR is an absolute must. The latest cameras from Sony and Nikon offer wireless triggering and control of a powerful flash that can be placed anywhere in the room.
- High ISO rating This is where SLRs come into their own, giving good quality in low light at high ISO sensitivity ratings. I find first-class, smooth results are possible even at ISO 1,000.
- Dust removal system A great enemy of SLRs, when the lens mount is opened, dust marks on the sensor will appear as huge blotches on pictures. Some SLRs have dust removal systems but nearly all need a precarious clean after a year or two.
Dr Posner is a GP in Newcastle upon Tyne
Nikon D80 - £523
Nikon D40x - £419
Sony alpha - 100 £390
Canon EOS 400D £437


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Mhr unit 4 light and applications of optics
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Light hits surfaces, is reflected, and bounces away. This organic solar cell lamp utilises and gathers the energy from light sources that would otherwise have bounced off into nothingness, in order to spread an atmospheric light when amber fades the sky.
I have created a lamp that paves the way for how we can incorporate a new generation of solar cells into our everyday objects. Together with solar cell researchers at Epishine, I have built a system for integrating organic thin-film solar cells into design products.
The system is made up of screens that protect the solar cells, these screens can be put together in many constellations. I have considered the solar cells as a material in themselves, and integrated them into my design as a central form element.
With this project, I want to participate in the pursuit of a more sustainable and circular society by taking responsibility as a designer through value-driven methods with a view to apply sustainable innovations to real products. I see an opportunity to show the design world how far we have progressed, and above all, in what direction we are heading.


After all what we may like the most in photography is going out and have pleasure doing some pictures with a compact well-designed camera body and lens combination (which should be also good looking!). Are Olympus the only manufacturer does nice and refine photo equipment? No for sure but they have their own signature for a long time since the event of the famous Pen analog series.
And we are speaking about compactness first which a paramount quality for photographers on the go. Small cameras at first but also small lenses to be coherent with the concept. And the Micro Four Third sensor format is may be the only one that can guaranty that without letting down any technological (automated) advancement. If you are speaking about other sensor formats like the 24 X 36mm or APS-C, you cannot put aside the fact that their optics are often large and heavy comparatively from the equivalent MFT ones.
And how about the image quality of the Micro Four Third format? I think we have reached an MFT sensor development that can now deliver the quality level needed in most of the general photographic situations. Yes, in specific cases the larger formats (especially the medium ones) are still doing an outstanding job but we can leave them to the few pros and enthusiasms that can afford and justify their use. What is important is what you do with your pictures and what final purpose you intend with. Even for the fairly large print (like 13X19 inches or A3 format), a modern MFT format sensor will fulfill the task nicely if your picture-taking parameters are correctly set.
And what about using a second generation (16MP sensor) like we find into the Olympus OM-D E-M5 Mark II considering that a third itineration (Mark III w/20MP sensor) is already available on the market? Why not since the E-M5 Mark II is still a remarkable photographic camera device, very well built and designed for an everyday use under many various (and adverse) picture-taking conditions. The Olympus OM-D E-5 Mark II is also a mature product that have been updated a few times. For sure we are assisting to its last days of front selling life but with Olympus, you never know when it will be really no more available.
The Olympus M.Zuiko ED 14-150mm f4-5.6 II zoom lens is a kind of extreme optic that can be used for all-around photographic purposes. It is a compact design and construction along with a maximum 150mm focal length giving a six-time magnification compare to our naked eyesight. At its widest 14mm focal length, the Olympus zoom lens can fulfill many proximate photographic tasks and can perform panoramic views. With a very modest maximum variable aperture of F4-5.6, the M.Zuiko ED zoom lens is for sure a less flexible tool when you are facing low light situations or moving subjects. In those cases, you may rely on a higher ISO setting and on an internal camera body stabilization system (if available) with a higher deep of field, we must add.
The zoom ring is fairly large and have a good tempering turning resistance. The focusing ring can be reached easily and don't turn too freely although it is "by-wire". The Olympus M.Zuiko ED 14-150mm II zoom lens is not part of the Olympus Pro line of optics but it has the splash proof feature which can be a great help when using the lens in adverse conditions (providing that the camera body have the same characteristic). A dedicated bayonet mount lens hood is furnished with the lens which is always appreciated by the owner who have already spent good money to get the optic. The 58mm filter accessory size is moderated and allows you to buy good protection filter or special effects filters if you wish to do so.
All the official specifications regarding the Olympus M.Zuiko ED 14-150mm F4-5.6 II are here.
In daylight or well light contexts, the Olympus M.Zuiko ED 14-150mm II is handy optic especially if you couple it with a camera model such as the Olympus OM-D or Pen series which are featuring internal sensor stabilization capability. Having a fast access to bigger telephoto setting give to the zoom lens a greater flexibility that prevent continuous permutation between different lens models and that can be hazardous in many circumstances. Even more it is a faster optic to operate when you are framing your subject. At its widest focal length of 14mm, you are reaching the upper limit of a "real" wide angle lens with 75 degrees of angle of view.
Doing close photography is possible with the Olympus M.Zuiko ED 14-150mm II considering its high magnification capability although you have to respect a minimum distance between you and your subject of half a meter (1.6 ft). If you are expecting to take pictures of regular size objects like flowers, the Olympus M.Zuiko ED 14-150mm II will allow you to get very interesting results and again its versatility will be appreciated. It is not a "macro" intended optic and the Olympus M.Zuiko ED 60mm F2.8 or ED 30mm F3.5 macro premium lenses should be your best choices to do such specialized and small subjects.
Having worked with the Olympus M.Zuiko ED 14-150mm II zoom lens for some table top subjects has giving me the opportunity to check the image quality output of the optic in a more optimum picture taking condition in using a low ISO and having the camera tripod mounted. And this M.Zuiko ED zoom lens is offering usual Olympus optical "standard" lens quality level ( acknowledging that the Olympus Pro lenses are still their best products in that sense). Color rendition, contrast, image definition are good and on average compare to their less focally stretched standards zoom lenses.
If you are a photographer that is bringing your camera almost everywhere in the city, on travel, in your surrounding or doing outdoor trecking, the Olympus M. Zuiko ED 14-150mm II should be a serious lens option to consider for its versatility and its image quality. It is compact, well built and ready to cope with almost any kind of subjects. A very pleasant lens mate.


I was out early this morning, while the light was still soft, making images in the garden of a home where we are staying. These are some of the images I made. All were made using the Nikon Z6 mirrorless camera with the newly-released Nikon 105mm f/2.8 S lens. This lens is quite sharp. It’s reputed to be the sharpest 105mm lens Nikon has ever made, and they’ve made some legendary lenses in that focal length. I’ve owned several over the years and I can’t disagree with that statement. In addition, the lens is surprisingly light for its size and it operates very smoothly.
These lenses are hard to get right now, due to a computer chip shortage affecting the industry. If you can get one of these lenses, you won’t be disappointed.


Attolight AG provides cathodoluminescence (CL) -based solutions for semiconductor in-line defect inspection and high-end material research in industrial R&D and academia.
Attolight AG is an emerging leader in defect inspection for advanced semiconductor materials and devices using cathodoluminescence spectroscopy. The company designs and manufactures automated solutions for semiconductor in-line defect inspection and high-end material research tools for industrial R&D and academia. Attolight's core expertise lies in the application of quantitative cathodoluminescence (q-CL), a non-destructive characterization method that produces spectroscopic data at the nanoscale and provides a deeper understanding of the structure of materials.
The company's technology has a wide variety of applications in different areas such as reliability and performance analysis of LEDs, GaN power transistors, deep UV emitters, lasers, solar cells, and biosensors. The company has a global presence with systems in Europe, Asia, and North America, and is headquartered at the EPFL Innovation Park in Lausanne (Switzerland). Attolight AG offers a wide range of products from CL add-ons for TEM to a SEM-CL multi-spectroscopies platform and in-line solutions. On the SEM-CL platform, two analysis modes are proposed: continuous and time-resolved. The continuous mode is mainly used for the identification of the composition, dopants, defects... in materials while the time-resolved mode allows to study the dynamics of electronic recombination. This mode requires a time-resolved detector such as a streak camera.
The company designs and manufactures automated solutions for semiconductor in-line defect inspection and high-end material research tools for industrial R&D and academia.
Role in the project
Attolight is involved in two complementary tasks centered around the characterization of dislocations and other material defects:
- Exploration of analytical & intrinsic aspects of dislocations,
- Enable fab-based near-line analytical characterization during R&D, ramp-up & production.
ATT performs CL with two main goals in mind:
- Threading dislocations type and density in GaN-on-Si
- Point defects nature and clustering behavior characterization
Building on the threading dislocations results ATT will attempt to industrialize this application on its Säntis full wafer tool to enable large scale wafer inspection.


To present a STEREOSCOPIC MOTION PICTURE, two images are projected superimposed onto the same screen through CIRCULAR POLARIZING FILTERS of opposite handedness. The viewer wears eyeglasses which contain a pair of analyzing filters (circular polarizers mounted in reverse) of opposite handedness. Light that is left-circularly polarized is blocked by the right-handed analyzer, while right-circularly polarized light is blocked by the left-handed analyzer. The result is similar to that of stereoscopic viewing using linearly polarized glasses, except the viewer can tilt his or her head and still maintain left/right separation (although stereoscopic image fusion will be lost due to the mismatch between the eye plane and the original camera plane)
The UNIPOAR 3D SYSTEM for cinemas is a polarized 3D system, that is based on the projector presenting a alternating segments of circularly polarized material. Mounted in front of the projector lens, this filter is synchronized to the projected images, giving each frame a polarization perpendicular to the previous one, which can be viewed with polarized 3D glasses.


Jiangsu Amde Optoelectronics Technology Co., Ltd. plans to invest a total of 200 million yuan to build an excellent leader in special optical cables and connectors in China; the company develops, produces and sells optical communications: special optical cables, armored optical cables and supporting accessories. The main products are: various types of optical fibers, optical cables, 5G base station remote optical cables, field optical cables, metal protection tubes, connectors, optical fiber sensing products and equipment. The company's products have been successfully applied to the optical cable and connector components of the LSSON 12th Five-Year Key Project of the Chinese Academy of Sciences, and have been successfully applied in subways and nearly 100 pipe gallery projects in nearly 40 cities in China! The products produced by the company have been widely used in telecommunications, mobile equipment room construction, integrated wiring of buildings, radio and television networks, national defense communications and other fields, and some products have been introduced into various large-scale civil engineering through the vast number of sensor equipment manufacturers. On-line monitoring of temperature and strain sensing in bridge construction, pipe gallery, power system and subway tunnel; the company continues to integrate synergy in "special optical cable - armored optical cable - optical fiber connector" with years of business accumulation in the field of armored optical cables Advantages, improve the overall competitiveness of products such as optical cables and connectors by continuously improving the performance indicators of each product link. The company's comprehensive strength in the optical communication industry has steadily improved.


We consider the problem of unsupervised camera pose estimation. Given an input video sequence, our goal is to estimate the camera pose (i.e. the camera motion) between consecutive frames. Traditionally, this problem is tackled by placing strict constraints on the transformation vector or by incorporating optical flow through a complex pipeline. We propose an alternative approach that utilizes a compositional re-estimation process for camera pose estimation. Given an input, we first estimate a depth map. Our method then iteratively estimates the camera motion based on the estimated depth map. Our approach significantly improves the predicted camera motion both quantitatively and visually. Furthermore, the re-estimation resolves the problem of out-of-boundaries pixels in a novel and simple way. Another advantage of our approach is that it is adaptable to other camera pose estimation approaches. Experimental analysis on KITTI benchmark dataset demonstrates that our method outperforms existing state-of-the-art approaches in unsupervised camera ego-motion estimation.


Pan-STARRS -- the Panoramic Survey Telescope & Rapid Response System -- is an innovative design for a wide-field imaging facility developed at the University of Hawaii's Institute for Astronomy.
The combination of relatively small mirrors with very large digital cameras results in an economical observing system that can observe the entire available sky several times each month.
The prototype single-mirror telescope PS1 is now operational on Mount Haleakala; its scientific research program is being undertaken by the PS1 Science Consortium - a collaboration between ten research organizations in four countries,
A major goal of Pan-STARRS is to discover and characterize Earth-approaching objects, both asteroids & comets, that might pose a danger to our planet.
Its vast database is also ideal for research in several other astronomical areas, particularly those which involve an aspect of time variability. See PS1SC key projects for examples.


The use of 3D glasses has always been thought to be the main barrier in the mainstream acceptance of tridimensional televisions.
Despite companies such as Samsung and Sony developing better 3D technology using more advanced glasses, other companies have opted to find ways to use 3D TVs without the use of glasses.
At the moment, there is a technology that relies on the use of webcams built into the TV sets which tracks the head and eye movement of the viewers and is able to adjust the image on the set accordingly. Another method of glasses-free technology is being developed by a certain Hungarian company.
iPoint 3D is currently working on, what it calls, the 3D TV Box which converts 3D video data into the correct signals needed by autostereoscopic displays to allow viewers to watch 3D without glasses.
This could potentially be a better method of delivering glasses-free 3D however at the moment all forms of specs-free technology are unable to deliver a picture that is as clear as 3D technology which requires the viewers to wear tridimensional eyewear.
The no-glasses 3D technology also ties viewers down to sitting at a specific height and position in order to see the tridimensional effect.
This is another aspect preventing the technology from becoming popular. Toshiba has a specs-free 3D TV on sale at the moment which uses a lenticular lens to produce different images that can be seen at different angles.
However, this option does not produce as much of an immersive experience that other 3D TVs that require glasses provide, added to that the price tag, and it is unsurprising that it has taken off.


Days to COVID Vaccine: 4
Exercise: Gardening, Home improvement
Piano Song of the day: Stay with me (getting there at 80%)
I was awake at 6:30 this morning, should we buy the house we looked at yesterday or not, arrggghhhh!!!!!!
We lost the 18-55mm lens and if you know anything about DSLR's, there is a reason that the kit lens that comes with the camera is this one. It's because it is a very useful lens. 50mm is about how the eye sees things and any number less than that is wider. This gives you a lot of flexibility, except for zooming in on a distant object, which is where our 555-250mm lens comes in. The smaller the number the wider it is, the larger the number the more zoom you have.
So I needed to replace the 18-55mm because we really did need to go wider than 55mm. I was researching a replacement when a photographer friend suggested that we get what he has which is a 18-135mm lens. This gives you everything from wide (18mm) to some zoom (135mm) without having to change lens. Which makes it a great lens for everyday use. You can zoom out to get a whole room in a picture and you can zoom in to get a close up on a single individual without changing lens.
Of course, different lens do different things and you can get different effects from them. YOu know how they say the camera adds 10lbs, well they are right, if you are using a zoom. You can get the same shot from further away that you can from standing near the subject just by using a zoom lens, but a couple of things happen.
- The camera adds 10lbs. That is everything gets stretched a little
- The distance between the subject and everything that is in front of them gets compressed. The distant mountain, is now right behind them
- The depth of field can get narrower, which is a good excuse to use a zoom when you need this.
Anyway, we brought the 18-135mm lens and it is now our go-to lens that is mounted on the camera as the default lens to shoot with unless we need a good telephoto or something else special.


Cataract surgery is a common and highly effective procedure that is used to remove cloudy lenses from the eye and replace them with clear, artificial lenses. The procedure has come a long way in recent years, and there are now many advanced techniques available to improve the outcome of surgery and make the experience more comfortable for patients.
One of the most significant advancements in cataract surgery is the use of femtosecond laser technology. This technology uses a laser to create a precise and accurate incision in the eye, which reduces the need for handheld instruments and increases the precision of the procedure. This results in a faster recovery time and a reduced risk of complications.
Another advanced technique in cataract surgery is the use of toric intraocular lenses (IOLs). These lenses are specially designed for patients with astigmatism, which is a condition that causes distorted vision. Toric IOLs can correct astigmatism, reducing the need for glasses or contact lenses after surgery.
Phacoemulsification is another advanced technique that is commonly used in cataract surgery. This technique uses ultrasound energy to break up the cloudy lens, allowing it to be removed through a small incision. This results in a faster recovery time, less inflammation, and less risk of complications than traditional techniques.
In addition to these techniques, there are also many options for the type of intraocular lens (IOL) that can be used during cataract surgery. There are mono-focal IOLs, which correct distance vision, and multifocal IOLs, which correct both distance and near vision. Additionally, there are also accommodating-accommodating IOLs which help the eye adjust to different focus distances.
Another advanced technique that is gaining popularity is the use of small incision cataract surgery (SICS). In this procedure, the surgeon uses a small incision, usually less than 2.2 mm, to remove the cataract. This results in less trauma to the eye, less inflammation, and a faster recovery time.
In conclusion, cataract surgery is a common and highly effective procedure that has undergone significant advancements in recent years. The use of femtosecond laser technology, toric intraocular lenses, phacoemulsification, and many options of intraocular lenses, make the procedure more precise, comfortable, and with a faster recovery time. Additionally, the use of small incision cataract surgery (SICS) is gaining popularity due to its advantages of less trauma to the eye, less inflammation, and a faster recovery time. These advanced techniques, along with the expertise of the surgeon, can make a significant difference in the outcome of the surgery, and in the patient’s vision quality postoperatively.


Glasses have been designed to help our eyesight and protect our eyes from the sun. But did you ever wonder why some people have to wear glasses to see properly while others don’t? Before we can figure that out, we need to know how the eye works. First, let’s take a look at the retina, which is the part of the eye that reacts to the light of anything you look at and sends all this information to your brain. Once the information reaches your brain, it can transform this into the image that you actually see! The retina has a curved surface because your eyes are round in shape and when you actually look at something, three things need to happen:
- The image you see must be reduced in size to fit onto the retina.
- The scattered light must come together and come into focus at the surface of the retina.
- The image must be curved to match the curved surface of the retina.
The eye also has other parts that work together and interact to make sure that all of these things happen! Two of the main ones are:
- The pupil, which is almost like a little peep hole in the middle of your eye that allows all of the light into the back of your eye.
- The cornea, which could be considered as the front window of your eye and acts as a transparent cover for your pupil.
These two parts work together in order to focus the image of what you are looking at onto your retina. There are many reasons why people might need to wear glasses – the cornea may not be shaped properly, causing blurred vision, or the surface of the cornea may not be smooth and lead to distortion of vision.
Types of vision distortion include myopia (nearsightedness), which happens when people can’t see very far ahead and distant objects appear blurry. Hyperopia (farsightedness) happens when people can’t focus properly on things that are close to them. Different types of glasses or lenses are needed to correct these and bring sight back to normal.
Inquiry – Digging Deeper
Do you wear glasses or lenses? If so, do you know why you need to wear these? Here’s a fun online eye test that you can do in class and get a better idea of what type of vision you have!


What you should know about Thermal Camera
A thermal camera is a device that can recreate an image from the recorded body temperature variations. The image is retranscribed on a screen by forming different colours according to the temperature recorded. The colour is random and does not correspond to anything in particular. This device works most of the time with only one beam. There are two types of thermal cameras:
- With an uncooled infrared sensor that provides less accurate image quality.
- With a cryogenically cooled infrared sensor somewhat similar to photographic sensors but for the infrared range.
Thermal cameras are used in many areas, one of the most effective being in the rescue of people who are trapped under avalanches or debris from earthquakes, for example. Thermal infrared is also useful in the building industry to detect possible overheating or electrical problems, in the military to detect suspicious individuals at night (e.g. poaching), for health purposes (high fever at airports), to study nocturnal fauna, etc.
We talk about Construction Equipment
on our blog section.


Lesson 2: Light
Over the past few days, you have learned about the special characteristics of light. Review the facts about light in the "Things to Know" section. Be sure you understand the difference between light colors and paint colors. Can you explain the relationship between light and other objects, whether they absorb, reflect, or refract light?
Questions to Discuss
- How are rainbows made?
- How are paint colors and light colors different?
- What is the difference between reflection and absorption?
- What is refraction? (The bending of light as it travels through a transparent surface.)
Things to Review
Go over the steps on the scientific method with your child. Review the difference between reflection and absorption of light. Review the colors made when light is mixed: cyan, magenta, and yellow. Discuss that light travels in a straight line, and when a light is blocked, shadows form.