Sunlight Sensitive Coating Dye for Photochromic LensesDelivery term:The date of payment from buyers deliver within days
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The date of payment from buyers deliver within days
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- Qingdao Topwell Chemical Materials Co.,Ltd By certification [File Integrity]
No.666, Baihua Road, Baoding City, 071000, Hebei Province, China
- Website: http://www.tcmchem.com/ http://qddwhg.hebeisibote.com/
Photochromic lenses are optical lenses that darken on exposure to specific types of light of sufficient intensity, most commonly ultraviolet (UV) radiation. In the absence of activating light the lenses return to their clear state.
Photochromic lenses may be made of glass, polycarbonate, or another plastic. They are principally used in eyeglassesthat are dark in bright sunlight, but clear in low ambient light conditions. They darken significantly within about a minute of exposure to bright light, and take somewhat longer to clear. A range of clear and dark transmittances are available.
Keep sealed in a dark, cool place, away from direct sunlight.
Color changing principal:
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