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How eyeglass lens is made - material, production …
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How eyeglass lens is made - material, production …
Category: Other Machinery Industry Equipment
Eyeglass lenses are glass or plastic optical items that fit inside eyewear frames to enhance and/or correct the wearer's vision. The magnifying glass, invented in the early 1200s, was the first optical lens used for enhancing vision. Made from a transparent quartz and beryl lens, the invention ...
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