25.06.2014
Delivering a high light output at an incredible 340° beam angle, the LED Glass Tube range is ideal for use in offices, meeting rooms, schools, hospitals and corridors.
Tubes are also perfect for use in warehouse, storage and factory applications when incorporated into Non-Corrosive Luminaires. LED Tubes increase energy efficiency and reduce the need to replace and recycle fluorescent equivalents. Anti-reflective coating (also called "AR coating" or "anti-glare coating") improves vision, reduces eye strain and makes your eyeglasses look more attractive. These benefits are due to the ability of AR coating to virtually eliminate reflections from the front and back surfaces of your eyeglass lenses. AR coating is especially beneficial when used on high-index lenses, which reflect more light than regular plastic lenses.
Anti-reflective coating reduces glare and halos around lights at night and eliminates unattractive reflections on your lenses. For example, regular plastic lenses reflect roughly 8 percent of light hitting the lenses, so only 92 percent of available light enters the eye for vision. Today's modern anti-reflective coatings can virtually eliminate the reflection of light from eyeglass lenses, allowing 99.5 percent of available light to pass through the lenses and enter the eye for good vision.
By eliminating reflections, AR coating also makes your eyeglass lenses look nearly invisible so people can see your eyes and facial expressions more clearly. The visual benefits of lenses with anti-reflective coating include sharper vision with less glare when driving at night and greater comfort during prolonged computer use (compared with wearing eyeglass lenses without AR coating). Anti-reflective coating also is a good idea for sunglasses, because it eliminates glare from sunlight reflecting into your eyes from the back surface of tinted lenses when the sun is behind you. Most premium AR lenses include a surface treatment that seals the anti-reflective layers and makes the lenses easier to clean. Some anti-reflective lenses have surface treatments that are both hydrophobic and "oleophobic" (also called lipophobic), which means they repel both water and oil.
Applying anti-reflective coating to eyeglass lenses is a highly technical process involving vacuum deposition technology. The first step in the AR coating process is to meticulously clean the lenses and inspect them for visible and microscopic surface defects. Typically, a production line includes multiple washing and rinsing baths, including ultrasonic cleaning to remove any traces of surface contaminants.
The lenses are then loaded into special metal racks with spring-loaded openings so the lenses are held securely but with virtually all lens surfaces exposed for the coating application.
While the lens racks are rotating in the coating chamber, a power source within the machine focuses a beam of electrons onto a small crucible that contains a series of metal oxides in separate compartments.


When the coating materials are bombarded by electrons, they vaporize within the coating chamber and adhere to the surfaces of the lenses — creating a uniform, microscopically thin optical layer on the lens.
Each AR coating manufacturer has its own proprietary formula, but generally all anti-reflective coatings consist of multiple microscopic layers of metallic oxides of alternating high and low index of refraction. Depending on your lifestyle, your optician might suggest a specific brand of anti-reflective coating. Depending on the AR coating formula, most lenses with anti-reflective coating have a very faint residual color, usually green or blue, that is characteristic of that particular brand of coating. All About Vision is a Supporter National Sponsor of Optometry Giving Sight and we encourage our readers to support these humanitarian eye care organizations. Text and images on this website are copyright protected and reproduction is prohibited by law.
Over two times the life of fluorescent lamps in a cold environment reduces maintenance costs and hassles (50,000 vs. SimpleTube LED cooler door lights lighting solution also saves watts by lessening the load on the compressor. With the SimpleTube LED solution, re-lamping cycles can extend beyond 10 years instead of the 2-year cycle time that is typically associated with fluorescent lamps. It’s an industry first, using direct 120 VAC input eliminating the need for a bulky power supply. Steve, our beer sales were up 47% in March from the previous March after putting in your LED lights.
Steven Wilson here, long time energy efficient lighting wholesaler to businesses, contractors, government facilities, etc. Fluorimeter cells are expensive at $250 each however the quality of the cell is much higher than homebuilt cells and corners of the cell are almost perfectly square (unlike many cheaper cells in thich the corners are rounded). All opto-mechanical components here are standard including mirror mounts with angular adjustment screws, a universal prism mount used to hold the dye cell, and a lens mount for the cylindrical lens. Describes the finer points of tuning a dye laser using both a grating and an intra-cavity etalon. With reflections gone, more light passes through your lenses to optimize visual acuity with fewer distractions (especially at night), and the lenses look nearly invisible — which enhances your appearance by drawing more attention to your eyes and helping you make better "eye contact" with others.
Generally, the higher the index of refraction of the lens material, the more light that will be reflected from the surface of the lenses. High index plastic lenses can reflect up to 50 percent more light than regular plastic lenses (approximately 12 percent of available light), so even less light is available to the eye for vision. Anti-reflective glasses also are more attractive, so you can look your best in all lighting conditions.


These combination treatments typically contain fluorinated materials that give the lenses properties that are very similar to those of nonstick cookware. Even a tiny smudge, piece of lint or hairline scratch on a lens during the coating process can cause a defective AR coating. This is followed by air drying and heating of the lenses in special ovens to further remove unwanted moisture and gases from the lens surface. Since each layer affects different wavelengths of light, the more layers there are, the more reflections that are neutralized.
If you spend a lot of time working at a computer, you might benefit from an AR coating that filters out blue light.
For every light watt reduced in a frozen food case, the compressor works less hard, saving ~ 0.45 watts. SimpleTube LED cooler door lights feature a color temperature of 5000K and color-rendering index of 80. This ballast-free lamp has a patented internal driver which makes it remote power supply free. If you’re looking for superior lighting products at exceptional value, you’ve come to the right place! This can be particularly troublesome in low-light conditions, such as when driving at night. The door of the chamber is sealed, and the air is pumped out of the chamber to create a vacuum. For example, Hoya says its Recharge EX3 anti-reflective treatment blocks high-energy blue light emitted by electronic devices — such as computers, e-readers, smartphones, and even energy-efficient light bulbs — that could be damaging to the eyes over time.
And because anti-reflective coating eliminates light reflections that can mask lens surface defects, fine scratches often are more visible on AR-coated lenses than on uncoated lenses. Heiting has more than 25 years of experience as an eye care provider, health educator and consultant to the eyewear industry.
On a 5-door case, the additional energy savings from a reduced load on the compressor, can reach 70 watts vs.



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