Color	Black Brown Gray silver
Black Brown Gray silver

Description
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Item specifics

Brand Name KJDCHD
Origin CN(Origin)
Lenses Color Clear
Gender Unisex
Certification None
Lenses Material Polycarbonate
Lenses Optical Attribute Anti-reflective
Model Number 8188
Frame Material Alloy
Coating EMI
Item Type Eyewear
Eyewear Type Reading Glasses
Lens Height 32inch
Lens Width 54inch

Product Description

What are photochromic lenses?

Photochromic lenses are also referred to as light-sensitive lenses". Glass lenses are adding silver halide, but now is the mainstream of photochromic resin lenses, adding of spiro and other chemicals in the acrylic resin lens, so that the original colorless and transparent lenses, in bright light, will become colored lenses, to do the protection, so is suitable for indoor and outdoor use.Photochromic lens optical glass containing silver halide microcrystals, phototropy reversible reaction according to the principle, in the sunlight and UV irradiation variable dark, completely absorb ultraviolet and visible light absorption of neutral; back to the dark, can restore the colorless transparent.Photochromic lenses are mainly used in open-air fields, snow fields and indoor light sources, so as to prevent sunlight and ultraviolet light from damaging the eyes.

Warm tips

1.Please correctly understand photochromic glasses, he color depth does not equal sunglasses

2.Test discoloration, it is recommended to test at noon, noon sun UV strong, discoloration can achieve the best results, more test several times, the effect is better.