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Brand Polarized Photochromic Sunglasses Men Day Night Vision Dual Eyes Protect Sun Glasses Unisex driving goggles oculos de sol

$27.97

Black Gold-GrayBlack gold-yellowblack silver grayBlack silver-yellowGun silver-grayGun silver-yellow
CP
Clear
SKU: 2255800031157231 Category:

Description

What are photochromic glasses?

Photochromic lenses have millions of molecules of substances such as silver chloride or silver halide embedded in them.
When exposed to UV rays, as in direct sunlight, the molecules undergo a chemical process that causes them to change shape. The new molecular structure absorbs portions of the visible light, causing the lenses to darken, and to improve vision while ensuring protection from hazardous optical radiation.
The darkening of photochromic lenses was reversible, i.e., the lenses became original shape again once the ambient light was lowered.

An important note about photochromic lenses:

because they react to UV light and not to visible light, there are circumstances under which the darkening will not occur. Frist example, is in your car. Because the windshield blocks out most UV light, photochromic lenses will not darken. Second,is indoors test with ordinary lighting(Because the lighting used in daily lighting does not contain ultraviolet light),photochromic lenses will not darken.
So the ways to activate photochromism:
Exposed to UV rays, as in direct sunlight OR Use ultraviolet light lamp (not ordinary lighting lamp).This is the way to activate the photochromic function of the product.

Below is a test video of the buyers,you can watch on his YouTube channel at the following link //www.youtube.com/watch?v=fCX_cZg1kuk
Thank you!!!

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Additional information

Brand Name

COOLPANDAS

Origin

CN(Origin)

Gender

MEN

Lenses Material

TAC

Style

Square

Department Name

Adult

Frame Material

Aluminium Magnesium

Certification

CE

Lenses Optical Attribute

UV400

Eyewear Type

Sunglasses

Lens Height

46mm

Model Number

HBH8724BS

Item Type

Eyewear

Lens Width

49mm

Usage Scope

Driving,Fishing,Travel,Outdoor,Sports

Suitable For Face

Round Face Long Face Square Face Oval Face

Package

Box,Clean cloth,Card,glasses

Frame Feature

Stylish Comfortable And Not Easily Scratches

Gender/Ages

Men,Women & Youth Male

Season

Spring,Summer,Autumn,Winter

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