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Sapphire lens cleaning method

A sapphire and lens technology, applied in lens cleaning compositions, cleaning methods and utensils, cleaning methods using liquids, etc., can solve the problems of high equipment requirements, unfavorable safe operation, long process flow, etc., and achieves simple process flow, production Safe and easy-to-follow effects

Inactive Publication Date: 2019-11-15
LENS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above cleaning method, α-Al 2 o 3 The single crystal is cleaned with strong acid and strong oxidant three times, soaked in solvent once and soaked in cleaning solution once. The process flow is long, and it is soaked in strong acid and strong oxidant for many times. It requires high equipment such as tank body and is not conducive to safe operation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of sapphire lens cleaning method of the present invention, concrete steps are as follows:

[0031] (1), plasma cleaning. Prepare the cut or polished sapphire lens for inserting or clamping; put the inserting or clamping sapphire lens into the vacuum plasma cleaning machine. The vacuum plasma cleaning machine uses argon as the gas source and radio frequency power supply , the power is about 500W, and the cleaning time is 5 minutes.

[0032] (2), mixed acid cleaning. After taking out the whole sapphire lens frame or fixture, put it into the mixed acid solution of hydrogen peroxide and concentrated sulfuric acid, and clean it under ultrasonic conditions (the mixed acid solution is at room temperature or heated to 30-35°C) for 35 minutes; then drain the remaining mixed acid solution , rinse the sapphire lens with deionized water, and then dry the sapphire lens; wherein, the mixed acid solution is a mixture of hydrogen peroxide and concentrated sulfuric acid, and th...

Embodiment 2

[0035] A kind of sapphire lens cleaning method of the present invention, concrete steps are as follows:

[0036] (1), plasma cleaning. Prepare the cut or polished sapphire lens for inserting or clamping; put the inserting or clamping sapphire lens into the vacuum plasma cleaning machine. The vacuum plasma cleaning machine uses argon as the gas source and radio frequency power supply , the power is about 300W, and the cleaning time is 2 minutes.

[0037] (2), mixed acid cleaning. Take out the whole sapphire lens frame or fixture, put it into the mixed acid solution of hydrogen peroxide and concentrated sulfuric acid, clean it under ultrasonic conditions (the mixed acid solution is room temperature or heated to 30-35°C) for 30 minutes, and then drain the residual mixed acid solution. Rinse the sapphire lens with deionized water, and then dry the sapphire lens; wherein, the mixed acid solution is a mixture of hydrogen peroxide and concentrated sulfuric acid, and the volume rati...

Embodiment 3

[0040] A kind of sapphire lens cleaning method of the present invention, concrete steps are as follows:

[0041] (1), plasma cleaning. Prepare the cut or polished sapphire lens for inserting or clamping; put the inserting or clamping sapphire lens into the vacuum plasma cleaning machine. The vacuum plasma cleaning machine uses argon as the gas source and radio frequency power supply , the power is about 300W, and the cleaning time is 2 minutes.

[0042] (2), mixed acid cleaning. After taking out the whole sapphire lens frame or fixture, put it into the mixed acid solution of hydrogen peroxide and concentrated sulfuric acid, clean it under ultrasonic conditions (the mixed acid solution is room temperature or heated to 30-35°C) for 35 minutes, and then drain the residual mixed acid solution , rinse the sapphire lens with deionized water, and then dry the sapphire lens; wherein, the mixed acid solution is a mixture of hydrogen peroxide and concentrated sulfuric acid, and the vo...

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Abstract

The invention discloses a sapphire lens cleaning method. The sapphire lens cleaning method comprises the following steps of plasma cleaning, mixed acid solution cleaning and cleaning fluid cleaning. According to the sapphire lens cleaning method, the cleaning modes such as plasma cleaning is introduced to bear the cleaning task of most impurities and dirt of a sapphire lens, and the surface of sapphire is prevented from adsorbing the impurities and dirt again; then, cleaning is carried out in a mixed liquid acid solution of hydrogen peroxide and concentrated sulfuric acid, and then deionized water cleaning is carried out so as to further remove the dirty and impurities; and then cleaning and drying the sapphire lens in an ultrasonic container filled with cleaning liquid so as to thoroughlyremove the residual impurities and dirt, wherein the cleaning fluid comprises the components of a nonionic surfactant, carboxymethyl cellulose, sodium metasilicate, sodium hydroxide, a perfluoropolyether-based surfactant and deionized water. According to the cleaning method, a cleaning agent is reasonably selected, and the cleaning steps are reasonably designed, so that the use of strong acid anda strong oxidant is reduced; and the method is simple in technological process, efficient and environment-friendly, the operation method is easy to master, the production is safe, and the automationimplementation of a production line is facilitated.

Description

technical field [0001] The invention relates to the technical field of cleaning methods for optical element products, in particular to a cleaning method for sapphire lenses. Background technique [0002] Sapphire integrates excellent optical properties and chemical properties. It has the advantages of high hardness, high light transmittance, good wear resistance, and radiation resistance. Cover lens, etc. [0003] After sapphire is processed by wafer cutting and polishing, its surface is α-Al 2 o 3 Crystal cross section. α-Al 2 o 3 All crystal lattices in the crystal section are in a broken state, and one or more layers of unsaturated chemical bonds are distributed. Unsaturated chemical bonds have high energy and are in an unstable state. They are easily combined with surrounding molecules or atoms, which is the adsorption of impurities (such as dust particles, organic or inorganic impurities, etc.). The pollutants such as adsorbed impurities have a serious impact on ...

Claims

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Application Information

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IPC IPC(8): B08B3/08B08B3/12B08B3/10C11D1/825C11D3/22C11D3/08C11D3/04
CPCB08B3/08B08B3/10B08B3/12C11D1/004C11D1/721C11D1/825C11D3/0078C11D3/044C11D3/08C11D3/225
Inventor 周群飞饶桥兵乐新波
Owner LENS TECH
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