Film-changing blackening lens and preparation process thereof
A preparation process and lens technology, applied in the field of optical lenses, can solve the problems of reducing the light transmittance of the lens, affecting the visual effect, accelerating eye fatigue, etc., and achieving the effect of complete discoloration, good visual effect and good effect.
Active Publication Date: 2021-11-26
JIANGSU HANCHUANG NEW MATERIAL
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Problems solved by technology
However, in order to achieve the function of changing color under ultraviolet irradiation, the existing color-changing lenses have a heavier base color when they are not discolored. Because the lenses with base color will reduce the light transmittance of the lens and accelerate eye fatigue, thereby affecting the user's indoor vision. Visual effect
Method used
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[0040] A kind of preparation technology of film darkening lens provided by the invention comprises the following steps:
[0041] 1) Preparation of the substrate: Mix and stir the substrate raw materials evenly, melt the mixed raw materials into a viscous fluid state, inject them into the mold cavity, and heat the mold through an oven for 25 hours. , take out the release type, after the release type, clean, and after the substrate is cleaned, carry out secondary heat curing in an oven for 2 hours to prepare the substrate;
[0042] 2) Clean the substrate: soak the substrate prepared in step 1 in the cleaning solution through the water tank for 10 minutes, and then enter a plurality of clear water tanks for rinsing, wherein the cleaning solution is a high-temperature solvent, active on the surface, and cleaning can remove surface impurities. Keep the lens surface clean;
[0043] 3) Drying the substrate: drying and curing the lens cleaned in step 2, the drying temperature is 65°C...
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The invention relates to the technical field of optical lenses, in particular to a film-changing blackening lens and a preparation process thereof. The film-changing blackening lens comprises a substrate and a color-changing layer on the substrate, the color-changing layer is formed by spin-coating a convex face of the substrate with color-changing liquid, and the color-changing liquid comprises 20% of alkyd resin, 7.5% of amino resin, 7.5% of isocyanate, 60% of solvent, and 5% of blackening powder, wherein the above components are all in percentage by mass. The color-changing liquid added with the special color-changing black powder is spin-coated on the lens, so that the prepared lens is more thorough in color change and better in effect when being directly irradiated by ultraviolet rays, and the requirements of people on the color-changing lens are better met; and secondly, when the blackened lenses are not irradiated by ultraviolet rays, the light transmittance of the lenses is higher, so that eyes are not easy to fatigue when people wear the glasses for a long time, and the visual effect of a user in a room is better.
Description
technical field [0001] The invention relates to the technical field of optical lenses, in particular to a film blackened lens and a preparation process thereof. Background technique [0002] As a vision correction tool, the lens pursues a clear and transparent standard. However, in order to achieve the function of changing color under ultraviolet irradiation, the existing color-changing lenses have a heavier base color when they are not discolored. Because the lenses with base color will reduce the light transmittance of the lens and accelerate eye fatigue, thereby affecting the user's indoor vision. Visual effect. [0003] In order to solve the above problems, this application proposes a film blackening lens and its preparation process. The darkening lens produced will change color more thoroughly when exposed to direct ultraviolet rays, which is more in line with people's needs for color changing lenses. Contents of the invention [0004] (1) Purpose of the invention ...
Claims
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Login to View More IPC IPC(8): G02C7/10G02B1/14C09D167/08C09D161/20C09D7/63
CPCG02C7/108G02C7/102G02B1/14C09D167/08C09D7/63C08L61/20C08K5/3435
Inventor 李卫国
Owner JIANGSU HANCHUANG NEW MATERIAL