Method for extinction of inner hole wall of light through hole of anti-dazzling screen of mobile phone lens

A technology of shading sheet and inner hole wall, which is applied in the field of optical components, can solve the problems of high requirements for experimental conditions, complicated production process, incomplete extinction effect, etc., and achieves a simple process, uniform fog surface, and good fog effect. Effect

Pending Publication Date: 2022-04-08
DALIAN JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two methods can make the shading film achieve the matting effect, but the matting effect is not complete, and the manufacturing process is complicated, the operation is difficult, and the experimental conditions are relatively high.

Method used

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  • Method for extinction of inner hole wall of light through hole of anti-dazzling screen of mobile phone lens
  • Method for extinction of inner hole wall of light through hole of anti-dazzling screen of mobile phone lens

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Embodiment Construction

[0023] Embodiments of the present invention are described in detail below. The embodiments described below are examples only for explaining the present invention and should not be construed as limiting the present invention.

[0024] (1) Clean the shading sheet with deionized water;

[0025] (2) Prepare a sodium hydroxide solution with a concentration of 15%, add sodium dodecylbenzenesulfonate, the mass ratio of sodium hydroxide solution to sodium dodecylbenzenesulfonate is 20:1, and pass light to the shading sheet The PET layer and carbon coating on the inner wall of the hole are subjected to matte etching treatment, the heating temperature of the water bath is controlled at a constant temperature of 70°C, and the reaction process is stirred at a constant speed at a rate of 20r / min;

[0026] (3) prepare 3% sulfuric acid solution, carry out pickling 1min to the shading sheet after the treatment in step (2), carry out ultrasonic water washing after pickling finishes;

[0027]...

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Abstract

The invention relates to an optical element playing a shading role in a lens, in particular to an extinction method for a light through hole in the inner hole wall of a shading piece. The method comprises the following steps: 1, cleaning a shading sheet with deionized water; 2, uniformly mixing an alkaline etching solution with a surfactant, and carrying out extinction etching treatment on the PET layer and the carbon coating on the inner hole wall of the light through hole of the anti-dazzling screen; thirdly, the anti-dazzling screen treated in the second step is subjected to acid pickling and ultrasonic cleaning; and 4, the anti-dazzling screen treated in the step 3 is dried. According to the extinction method disclosed by the invention, the inner hole wall of the light through hole of the anti-dazzling screen of the mobile phone lens is subjected to extinction treatment, pits in the surface of the inner hole wall of the light through hole are uniform, the PET layer and the carbon coating can be subjected to extinction treatment at the same time, the treatment time is short, and the efficiency is high.

Description

technical field [0001] The invention relates to an optical element which plays a light-shielding function in a lens, in particular to a method for extinction of light through a light hole on the inner hole wall of a light-shielding sheet. Background technique [0002] The shading sheet is a black ring sheet that can control the amount of light in the lens of the smartphone, and is embedded in the lens to play the role of shading. The light-shielding sheet includes polyethylene terephthalate (PET) and black carbon coatings coated on opposite surfaces of the PET layer. During the production and cutting process, the inner wall of the light-through hole is flat and smooth. When the mobile phone lens uses the principle of pinhole imaging to take pictures, the external light will pass through the circular light hole in the middle of the shading sheet, part of the stray light will be absorbed by the black shading sheet, and the other stray light will be irradiated on the smooth inn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B11/04G02B1/12G03B30/00
Inventor 李刚杨欣桐王娜
Owner DALIAN JIAOTONG UNIVERSITY
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