Factory Price Photochromic Polarized Uv400 Sunglasses - 1.56 Bifocal Round Top Photochromic Gray HMC Optical lenses – Boris

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Sincerity, Innovation, Rigorousness, and Efficiency could be the persistent conception of our organization for your long-term to establish alongside one another with shoppers for mutual reciprocity and mutual benefit for Blue Glass Spectacles, Polycarbonate Lens Material, Photochromic Eyeglasses, We warmly welcome all interested customers to contact us for more information.

Factory Price Photochromic Polarized Uv400 Sunglasses - 1.56 Bifocal Round Top Photochromic Gray HMC Optical lenses – Boris Detail:

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Place of Origin:	Jiangsu	Brand Name:	BORIS
Model Number:	Photochromic Lens	Lenses Material:	SR-55
Vision Effect:	Bifocal	Coating Film:	HC/HMC/SHMC
Lenses Color:	White(indoor)	Coating Color:	Green/Blue
Index:	1.56	Specific Gravity:	1.28
Certification:	CE/ISO9001	Abbe Value:	35
Diameter:	70/28mm	Design:	Asperical

According to the principle of photochromic reciprocal reversible reaction, it can quickly darken under sunlight and ultraviolet radiation, fully absorb ultraviolet light, and absorb visible light in a neutral way; Back to the dark place, it can quickly restore colorless transparency. It is mainly used in outdoor, snowy and indoor workplaces with strong light sources to prevent eye damage caused by sunlight, ultraviolet light and glare.

The color changing lens can adjust the color changing depth with the intensity of ultraviolet light. The stronger the ultraviolet light is, the darker the color is. On the contrary, the weaker the ultraviolet light is, the shallower the color will become transparent.The principle is that silver halide particles are added into the lens raw materials, and the silver halide is decomposed into halogen ions and silver ions under the action of ultraviolet light to change color.

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Product variety is complete, good quality and inexpensive, the delivery is fast and transport is security, very good, we are happy to cooperate with a reputable company!