Basic knowledge of sunglasses: radiation mechanism of eye tissue damage

Sunglasses in addition to can reduce the radiation intensity of visible light, can also reduce the ultraviolet and infrared radiation. Polarized sunglasses can also be used to eliminate the water, snow, reflecting the gravel road surface level. Sunglasses today more endowed with fashionable breath. But the fundamental role of sunglasses is to provide radiation protection for the eyes. Sunglasses factory factory recommend sunglasses sunglasses 9001 guns, fashionable and cool, the charm of personal. Radiation eye tissue damage mechanism, 1) Heat effect of long-term exposure to the long wavelength radiation source environment, local tissue because of molecular motion rate increases, the temperature and produce heat effect. Long wavelength radiation photon energy is low, usually don't eye tissue damage, but in high strength low energy of long wave radiation environment, as some high vocational environment ( The blast furnace and glass workers, etc. ) Infrared ( IR) Can cause damage to the eyes. ( 2) Photochemical effects of short wavelength radiation for the damage of the eye, especially the crystal and retinal damage is more obvious. Shorter wavelength of the radiation photon energy is higher, may make the local tissue chemical bond rupture and destroy the molecular structure, which can lead to local eye tissue damage. General for the eye tissues, short wavelength UV radiation hazard is far more damaging than the wavelength of the IR radiation. ( 3) Draper's law of radiation when absorbed by the eye tissue damage to eyes, only the part of the incident energy is absorbed by the system can change or influence on the system. If radiation can penetrate directly or by reflection without organized molecular absorption will not affect the organization, this principle is called Draper's law ( Draper' s法) 。