A kind of anti-blue light resin lens and preparation method thereof

Abstract

The invention discloses an anti-blue light resin lens and a preparation method thereof. The lens comprises a resin monomer, a blue light absorber, a polymerization initiator and a modifier, wherein the modifier is an acrylic modifier, and the weight accounts for the 0.1%‑5.0% of the total lens weight. The thermal curing molding in the lens preparation process is carried out by combining an air curing furnace and a water curing furnace. The formula described in the invention can not only improve the blue light absorption rate but also ensure the quality of the lens, improve the yield and save production cost. The modifier used can increase the reaction degree, increase the three-dimensional network structure, increase the toughness of the lens, and improve the qualified rate of the lens , while considering the reaction speed and shrinkage, refractive index and Abbe number, while the lens is toughened, its optical performance is guaranteed. The preparation method of the present invention adopts a specific curing mode, so that the edge cracking problem of old optical resin lenses and module semi-finished products is greatly improved, and the qualified rate is greater than 95%.

Description

technical field [0001] The invention belongs to the field of resin lenses, and more specifically relates to an anti-blue resin lens and a preparation method thereof. Background technique [0002] In visible light, blue light is a kind of short-wave light with high energy and high energy. Blue light can easily penetrate the lens of the glasses and reach the retina, causing photochemical damage to the eyes and rapidly accelerating the oxidation of the macular area of ​​the eye. The process can cause great damage to the eyes, leading to symptoms such as dry eyes, eye astringency and eye soreness, and can also cause fundus damage after cataract surgery. Blue light can inhibit the secretion of melatonin, disturb sleep, and increase the incidence of major diseases. With the progress of society and the development of science and technology, people's living standards are getting higher and higher. In order to solve the above problems at the same time, many people choose to wear gla...

AI Technical Summary

Problems solved by technology

With the progress of society and the development of science and technology, people's living standards are getting higher and higher. In order to solve the above problems at the same time, many people choose to wear glasses with anti-blue light performance. The blue light feature is achieved by coating the surface of the lens with an anti-blue light film. This kind of lens is expensive and the output is not high. The processing and production are unstable, the sustainability is not strong, and the film is easy to fall off.

[0003] There are also blue light absorbers added in the production process to directly produce anti-blue light lenses, but according to the existing technology, only conventional myopia resin lenses can be produced, and the pass rate of old light resin lenses and module semi-finished products is very low. This is because Diethylene glycol diallyl carbonate itself is highly brittle. After high-temperature curing, the curing furnace is opened. When encountering low-temperature air, the old light and the module will automatically break in the curing furnace.

Moreover, when the mold is opened, for the high-gloss old light and high-curvature modules, the edge is relatively thin, and the edge is particularly prone to cracking. The mold opening is more brittle when the temperature is lowered, and the cracked edge is larger and sticks to the mold, which leads to a lens pass rate. Not high, production cost becomes larger

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