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Both inorganic material and organic material, optical lenses, in the course of everyday use, with dirt or gravel ( Silicon oxide) the

by:ChangHui     2020-06-26
Judgment test method and test resistance to wear and tear film abrasion resistance in clinical use, is the basic method of let Dai Jingzhe wearing a period of time, then use a microscope and than wear and tear on the lens. , of course, this is usually before officially to promote the new technology methods, at the moment we commonly used is more rapid and intuitive testing method is: 1) Grind arenaceous test puts optical lenses containing gravel materials ( Regulation of grain size and hardness of the gravel) Back and forth, in a certain control operating friction. After the meter before and after the friction test lenses with fog diffuse light, and the comparison with standard lens. 2) Steel wool test with a steel wool, under certain pressure and velocity, on the lens surface friction a han myung woo, an the number of times, and then use haze meter before and after the friction test lenses of diffuse light, and the comparison with standard lens. 3) The relationship between minus reflection film and resistance to wear and tear film minus reflection film layer on the surface of the lens is a kind of very thin metal oxide inorganic material ( The thickness less than 1 micron) , hard and brittle. When plating on glass lenses, because the base is hard, gravel, on which the film is relatively easy to produce scratches; But minus reflection film plated on the organic glass, because the base is soft, gravel in the film, the film layer is easy to produce scratches.
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