Traditional Culture Encyclopedia - Photography major - What is a coated lens? What are the advantages?
What is a coated lens? What are the advantages?
Coated spectacle lens is a new technology that uses optical film and vacuum to coat a layer of substance on the lens surface to improve the ability of lens to reflect light and enhance or weaken light transmission. There are two kinds of coated glasses lenses: one is reflective filter lens: the surface of the lens is coated with gold, silver and zinc sulfide. The coating can reflect visible light, infrared ray and R ray, and protect eyes. The other is antireflection film: plated with magnesium fluoride, silicon dioxide, aluminum fluoride, etc. The specular reflection can be reduced and the transmittance of the lens can be improved. Beautiful appearance, conducive to photography. Advantages of coated glasses: (1) Clear vision, reduced specular reflection and increased light transmittance. (2) Coated glasses can prevent ultraviolet rays, infrared rays and X-rays from hurting eyes. After wearing coated glasses, the eyesight is not easy to get tired, which can protect the eyesight of the staff in front of the screen. (3) Coated glasses can reduce the reflected light on the lens surface, solve the problem of wearing glasses to take pictures under strong light, and increase the aesthetic feeling. (4) The coated spectacle lens can withstand various harsh environments, such as high temperature, rain and seawater immersion, and will not fall off. (5) Pay attention when cleaning the lens. If there is oil on the lens, you can clean it with neutral detergent instead of dry cleaning.
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