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CHEMILENS Technology
UV400 Protection lens
Outstanding features of CHEMILENS
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The UV400 protection lens is a product featuring new technology that blocks UV rays (harmful light) by improving the nature of the lens itself, unlike the coating methods used on existing lenses. You no longer need to apply an expensive UV coating afterwards. Protect your vision with the UV (harmful light) protection lens developed by Chemilens using advanced technology.
What are Ultraviolet Rays?
Rather than the short wavelength of visible rays in the spectrum of sunlight, light not visible to the naked eye in the outer part of the spectrum has a strong chemical or physiological effect from photochemical reactions as well as sterilizing effect. Most of the UV rays in the spectrum of sunlight are absorbed by the oxygen molecules in the atmosphere to form ozone. UV rays were first discovered in 1801 by a German chemist J.W Ritter from the photographic effect of UV rays.
What is UV-A (400nm)?
Short waves in sunlight are blocked and absorbed at the earth's surface and cornea but the domain of UV-A (400nm) rays penetrate deeply into the lens of the eye and can have serious repercussions. In particular, the fact that UBV and mid-range wavelengths (380~400nm) are major causes inducing fatigue and effulgence in the eyes has recently been revealed. |
[Fatality of UV-A rays on cataracts/keratitis/vision]
UV-A rays of long wavelengths are very harmful to the human body.
| Non-visible and non-perceivable light that is harmful to the human body (only about 5% of UV rays reach the earth) |
Violet, indigo, blue, green, yellow, orange, red (visible light) |
Long wavelengths contain high energy
This has little effect on the human body. |
Effects of UV rays
UV rays are classified as UV400 and UV-A, B, C depending on the wavelength range.
| Types of Ultraviolet Light |
Scope of exposure |
Effects (Aliments) |
| UV 400 (380~400nm) |
Reaches the corneal layer, eye lens/ deeply penetrates the skin |
Induces effulgence fatigue in eye |
| UV-A (320~380nm) |
Reaches the corneal layer, eye lens/ deeply penetrates the skin |
Induces cataracts, snow blindness/ induces infection from sunlight, and keratitis |
| UV-B (286~320nm) |
Absorbed into the cornea/ disappears on contact with skin |
Induces sunburn, snow blindness, damage to the cornea |
| UV-C (less than 286nm) |
Nearly absorbed by the ozone layer in the air |
Concerns about various adverse effects of ozone depletion |
Necessities of UV Protected Lens
Severe depletion of the ozone layer in the air
Enlarged scope of TV viewing and outdoor activity
Increased usages of computers
Impaired vision from light sources
Diabetics and cataracts among other vision impairment from medication
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