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A technology for optical lenses and washing liquids, which is applied to chemical instruments and methods, cleaning methods using liquids, cleaning methods, and utensils. Light surface requirements and other issues, to achieve the effect of low foam, high cleaning power
Active Publication Date: 2011-04-27
ZENNI OPTICAL
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In the current cleaning process, the cleaning liquid used is mainly sodium hydroxide and potassium hydroxide, and at the same time, detergent is added as an auxiliary. This washing method can clean impurities on the surface of some lenses, because the surface tension of the cleaning liquid is relatively high. Large, unable to penetrate into the near surface of the lens, so that tiny particles or dirt cannot be removed, even if ultrasonic waves are used as an auxiliary and heating method, it still cannot meet the optical surface requirements of optical lenses
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[0016] From Table 1, the lotion method of the present embodiment, in terms of concentration percentage, comprises the following steps;
[0017] 1. Configure strong alkali and strong alkali-resistant surfactant: take 8% sodium hydroxide, 6% propylene glycol methyl ether, 6% ethanol, 1.6% sulfate, and 1.6% isomeric alcohol ethoxylate , 76.8%% deionized water is mixed evenly and then set aside;
[0018] 2. Configure a weak base and a surfactant that can work in a weak base: take 7% sodium bicarbonate, 0.8% sodium carbonate, 10% propylene glycol methyl ether, 10% ethanol, and 1.4% isomeric alcohol polyoxygen Vinyl ether, 1.5% nonylphenol polyoxyethylene ether and 69.3% deionized water are mixed uniformly and set aside;
[0019] 3. The lens cleaning process is as follows:
[0020] The first step: a) Soak the te...
Embodiment 2
[0029]
[0030] This solution mainly adjusts the surfactant. After the surfactant is adjusted, the penetration of the cotton cloth decreases significantly, and the qualified rate of the lens also decreases, which is generally between 84% and 90%.
Embodiment 3
[0032]
[0033] This plan mainly adjusts the ratio of strong alkali and weak alkali. After the adjustment, the penetration power decreases less, but the main cleaning power decreases, and the pass rate is between 82% and 87%.
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Abstract
The invention provides a method for cleaning an optical lens. Based on concentration percentage, the method is characterized by comprising the following steps of: 1) preparing strong alkali and an alkali-resistant surfactant; 2) preparing weak alkali and a surfactant which can work in the weak alkali; and 3) cleaning the lens. The method for cleaning the optical lens has characteristics of high washing force and low foaming by using the strong penetration force and the biodegradable characteristic of heterogeneous alcohol polyoxyethylene ether and secondary alcohol polyoxyethylene ether in combination with an organic solvent with high boiling point and alkali substances, is suitable for washing a large mass of lenses, and simultaneously does not swell the lenses. The strong alkali surfactant is used for dissolving substances of organics and releasing agents on the surfaces of the lenses; and the weak alkali surfactant is used for removing micro residues from the surfaces of the lenses by the superstrong penetration force.
Description
technical field [0001] The invention relates to a liquid washing method for optical lenses. Background technique [0002] At present, the production quantity of optical lenses in China is very large. The production process of optical lenses is as follows: configure all the raw materials required for the lenses, add the adjusted raw materials into the glass mold, and cure through a series of temperature programs to finally obtain the initial lenses. Use strong alkali for corrosion cleaning to make the lens surface basically clean. After cleaning, harden the coating on the lens surface. It can reduce the reflection of the lens surface and improve the transmittance. When the outermost layer is coated with fluorine-containing organic matter, it can also prevent oil stains and fingerprints. Lens surface cleaning is a key process in lens production. If the surface of a lens is not cleaned, various specks will appear in the subsequent hardening process, which will affect the quali...
Claims
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Application Information
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