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在金属熔炼、玻璃、陶瓷、铸造、机械热处理等作业时,从温度为1050～2150℃的热源表面辐射出的射线中,70％以上是红外线,还有少量可见光和紫外线。实践证明,红外线和紫外线对人眼组织可以造成伤害。我国冶炼工人及其他行业接触炉窑的工人,长期使用的护目镜是钴兰镜片。这种镜片只能防可见光,看火可以,但不能防红外线和紫外线。据有关部门对国内现使用的钴兰片测试,红外线透过率达96％,紫外线透过率达93％。这就是造成冶炼工人中有些人眼睛晶体混浊,甚至发生白内障的原因。我国于1983年颁布了炉窑护目镜相面罩国标(GB4015—83),其中规定了遮光号1～10号红外线透过率是:780～1300nm为37～0.10％,1300～2000nm为37～0.25％。但是,几年来没有理想的护目镜产品问世,
In metal smelting, glass, ceramic, casting, mechanical heat treatment and other operations, from the temperature of 1050 ~ 2150 ℃ heat radiation surface radiation, more than 70% of the infrared, but also a small amount of visible light and ultraviolet light. Practice has proved that infrared and ultraviolet rays can cause harm to human eye tissue. Our smelting workers and other industries in contact with the workers in the furnace, long-term use of goggles is cobalt blue lenses. This lens can only prevent visible light, see the fire can, but can not prevent infrared and ultraviolet rays. According to the relevant departments of the domestic use of cobalt blue test, the infrared transmittance of 96%, 93% UV transmittance. This is why some of the smelters have opacities in their eyes and even cataracts. China promulgated the kiln goggles mask 1983 (GB4015-83), which provides a transparent No. 1 to 10 infrared transmittance is: 780 ~ 1300nm 37 ~ 0.10%, 1300 ~ 2000nm for the 37 ~ 0.25 %. However, the ideal goggles have not come out in recent years,