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CRIXALIS Outdoor Photochromic Polarized Sunglasses for Men Women Fashion Sports

CRIXALIS Outdoor Photochromic Polarized Sunglasses for Men Women Fashion Sports

$20.73Price

SPECIFICATIONS


Applicable Scenarios: Outdoor

Brand Name: CRIXALIS

Certification: CE

Choice: yes

Department Name: Adult

Element type: Outdoor Sports

Eyewear Type: Sunglasses

Frame Material: Acetate

Gender: Men

Hign-concerned Chemical: None

Item Type: EYEWEAR

Lens Height: 56mm

Lens Width: 74mm

Lenses Material: TAC

Lenses Optical Attribute: polarized,Photochromic,Anti-reflective,UV400

Model Number: CR-8519

Origin: Mainland China

Place Of Origin: China (mainland)

Product Type: Fishing sunglasses

Style type: GOGGLE

semi_Choice: yes


Matters Requiring Attention:
1. Definition of Color-Changing Glasses
Color-changing glasses, also known as photochromic lenses, operate on the principle of ultraviolet (UV) irradiation rather than direct sunlight. Consequently, these lenses can change color even on overcast days or indoors.
 
2. Principle of Color Change
It is well established that sunlight carries ultraviolet radiation, which can be harmful to human health. The mechanism behind color-changing glasses involves an automatic adjustment in lens tint depth in response to UV exposure, thereby safeguarding the eyes. Specific chemicals within the lenses undergo a chemical reaction when exposed to UV light, leading to a change in lens color. This means that as long as there is UV irradiation, whether from direct sunlight or ambient indoor lighting, the lenses will adjust their tint accordingly.
 
When driving, it is important to note that the front windshield of a vehicle filters out most UV rays. As a result, the color-changing lenses may not darken effectively because they require unobstructed UV exposure to function properly.


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