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YT-PS**0 3D Polarizer is suitable for both profesionals and consumers and is perfect for boardroom presendtations, conferences, classesrooms, lectures, home theater or any enviroment where high-quality stereoscopic 3D visualization is key to use your 3D prolizer, you need 3D content, a polarizatioon preserving projectioin metal screen, 3D ready projector and passive 3D glasses. 3D Polarizer Liquid Crystal Polarization Modulator is an easy-to-use, high quality Digital 3D cinemas system at home or office that generates stereoscopic 3D images on a suitable projection - screen. The system can be quickly DB*7/DB*5 output port.3D Polarizer is constructed from two specific Liquid Crystal panels that are accurately bonded to ensure effective polarization of the left and right mage from the projector lens, 3D Polarizer is perfectly matched to the high quality polarized 3D glasses produced by MASTERIMAGE 3D or RealD 3D. A.Technology has been a national patent. B.Adopt standard industrial product design methods and innovative designs can be both beautiful and durable. C.The use of imported high light transmission rate,fast response of the polarization filter and a highly stable electronic components,they can ensure high reliability and excellent work and 3D shocking image quality. D.Adopt wireless auto-sensing 3D signal without the data interface and personnel to operate. E.Support NEC/Bacro/christie digital Cinema Projector . F.Only a single projector, you can achieve the passive circular polarizer 3D. G.Change between 2D and 3D is automatic TMS. H.Apply to all 3D Digital Cinema Â

Buy your child sunglasses that block both kinds of UV rays. Make sure the sunglasses fit correctly and are comfortable.

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Contact lenses. Contact lenses are worn directly on the cornea. Like eyeglasses, contact lenses correct refractive errors. They do this by adding or subtracting focusing power to the cornea and lens.

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Earpieces that wrap around the ear (cable temples) are advised for children under 4 years. Straps may also be advised to hold the glasses in place.

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This class is intended for engineers, technicians, and managers who need to understand and apply basic optics concepts in their work. The basics in each of the ...

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It can't be used to calculate the field-of-view of a true panoramic camera with rotating lens. ... Back to my my photo homepage.

A lighting technician is in charge of setting up, rigging, programming, repairing, and generally overseeing the lighting equipment and software at live events.

Parents know they need to protect their children's skin from harmful sun rays. But many forget that the eyes need to be protected, too. Nearly 5 out of 10 American parents don’t regularly provide their children with sunglasses that protect their eyes from the sun's ultraviolet (UV) rays. Sun exposure may set children up for possible vision problems later in life.

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Bifocal is additional power in the lens. It has an additional measurement listed on the prescription as "add" to show the strength of the lens.

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A contact lens prescription includes more information than an eyeglass prescription. Special measurements are taken of the curvature of the eye. In addition, your child's healthcare provider will determine if their eyes are too dry for contact lenses. The provider will also see if there are any corneal problems that may prevent your child from wearing contact lenses. Trial lenses are often tested on the eyes first to make sure of the correct fit.

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Convex lenses. These lenses are thickest in the center, like a magnifying glass. They are used to correct farsightedness (hyperopia). The numerical prescription in diopters is always marked with a plus (+) symbol.

Concave lenses. These are thinnest in the center. The numerical prescription in diopters is always marked with a minus (-) symbol. These lenses are used to correct nearsightedness (myopia).

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About 45 million Americans wear contact lenses. About 9 out of 10 people who wear contact lenses use soft lenses. In general, there are 2 types of contact lenses:

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The sun can cause sunburned corneas, cancer of the eyelid, cataracts, and macular degeneration, among other problems. In addition, children are more susceptible because their lenses don’t block as much UV as adult lenses. Children also tend to spend more time outdoors than their parents, often in places where there is a lot of sun reflection. These include beaches, pools, and amusement parks. It is also important for your child to wear sunglasses in the snow as well. Most UV eye damage is the result of years of exposure.

Almost all sensors in machine vision fall into one of two categories: Charge-Coupled Device (CCD) and Complementary Metal Oxide Semiconductor (CMOS) imagers.

The lens power of eyeglasses is measured in diopters. This measurement reflects the amount of power needed to focus images directly onto the retina. When looking at an eyeglass prescription, you will see the following abbreviations:

If your child is old enough, let them play an active role in choosing their own glasses. Think about the features below when buying eyeglasses for children:

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Eyeglasses. Eyeglasses are the most common form of eyewear used to correct or improve many types of vision problems. They consist of a frame that holds 2 pieces of glass or plastic to correct refractive errors. Refractive errors can include trouble seeing far away (nearsightedness or myopia) and trouble seeing close up (farsightedness or hyperopia). They can also include blurring due to an irregularly shaped cornea (astigmatism). Eyeglasses work by adding or subtracting focusing power to the cornea and lens.