Dip-coating technology for hardening film of anti-blue ray resin lens surface

Abstract

The invention provides a dip-coating technology for a hardening film of an anti-blue ray resin lens surface. The dip-coating technology comprises the following steps that, a resin lens is subjected topretreatment, first the resin lens is put in a cleaning machine to wash, after cleaning is finished, surface water liquid is dried with an absorbent gauze, then the absorbent gauze is used for dipping into mixed liquid of ethyl alcohol and diethyl ether and wiping the surface of the resin lens outwards from the center of the lens surface after wiping is finished, the pretreatment is finished; thepretreated resin lens is soaked in hardening film liquid; the lens after soaking is placed on a drying film clamp and sent into a drying oven, a colloid film is dried and dewatered, film drying temperature is controlled within 250-290 DEG C, holding time is control within 30-45min; and after the lens is dried, natural cooling and temperature reduction are carried out. The surface hardness of thelens is improved, the reflectivity can be reduced to 0.5-0.8%, the lens is given a better anti-blue ray effect, the filtering effect of the blue ray with 400-500nm wave length can achieve 55-65%, andthe radiation of the blue ray can be effectively filtered.

Description

technical field [0001] The invention relates to a dip-coating process for adding a hard film on the surface of an anti-blue light resin lens. Background technique [0002] With the development of society, the amount of information people take in has skyrocketed, resulting in an increase in myopia. Glasses have become a common commodity in our lives. The functions of glasses are also varied, such as myopia glasses, ignoring glasses, sunglasses and so on. In order to make the lens have high transparency and high strength, lens manufacturers are constantly improving the process and equipment in the lens production process. [0003] After the 1970s, resin materials began to be used as new materials for spectacle lenses. Since then, optical technology has developed rapidly. Materials with a refractive index of 1.52~1.65 such as CR39, PMMA, and PC have been used in spectacle substrates. Spectacles have become more than just glasses. It is only used as a tool for vision correctio...

AI Technical Summary

Problems solved by technology

[0004] The Chinese invention with the patent number "201310511637.2" provides a low-reflectivity film resin lens and its coating method, which can reduce the reflectivity to 0.5-1.0%, but does not have the effect of slowing down blue light. The preparation process provided by the patent Complicated and cumbersome to operate

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