Optical cold processing technology

Abstract

The invention relates to an optical cold processing technology, which comprises the following steps: roughly grinding, namely cutting glass by using diamond by adopting a spherical generation method; accurately grinding, namely grinding for two times by contacting a diamond grinding vessel with the surface of a glass lens; milling edge, namely processing the glass lens by using an edging machine so as to enable an optical axis of the glass lens to be concentric with a rotary shaft of the edging machine; polishing, namely grinding by contacting a polyurethane grinding vessel with the surface of the glass lens; coating, namely placing the glass lens into a vacuum chamber and heating a coating material in the vacuum chamber to evaporate a coating material and form a film on the surface of the glass lens by condensing; and inking, namely driving the glass lens to rotate by using an inking machine, coating printing ink on the frosted surface of the glass lens by using a brush or sponge, and heating and oven-drying the glass lens. The optical cold processing technology adjusts the milling edge procedure, so slight clamp injury after milling edge can be removed through polishing, the comprehensive yield of special materials is increased, the technical bottleneck of lens processing of the special materials is overcome completely, and the reject ratio is reduced from 3 percent of the original milling edge process to below 0.5 percent.

Description

technical field [0001] The invention relates to an optical cold working process. Background technique [0002] According to the traditional process, there are many process methods according to the under-thickness of the film. When the lens film is less than or equal to 0.3mm, it is processed by rough → rough grinding → fine grinding → polishing → edge cutting → coating → ink coating. When the lens film is less than 0.3mm, use rough → rough Grinding→finishing→polishing→coating→cutting→inking are the methods of processing such as plating first and then turning. These two methods will cause many production problems. [0003] First, lenses made of special materials cannot be coated first. With the continuous development of optics, in order to achieve better optical performance, many ultra-soft glass materials (low refractive index and high dispersion) and soft phosphate glass (high refractive index and low dispersion) have been developed. Due to the soft material of this type...

AI Technical Summary

Problems solved by technology

Due to the soft material of this type of lens, the chemical stability is poor

If car first and then plating is used, it is easy to cause damage and ablation of the car side fixture

At the same time, due to the cutting powder on the surface of the lens during the edge-turning process, it is easy to cause latent damage on the surface by normal ultrasonic cleaning.

If you use Ruo washing, it will cause dirty cleaning before plating.

To sum up the above reasons, this kind of lens cannot be used for car first and then plated.

[0004] Second, it is easy to cause pinch and film damage after plating first

For lenses with soft materials and poor chemical stability, it is not possible to use the first coating and then the coating. If the first coating is used, it is easy to cause pinch and film damage, and the pass rate is very low.

[0005] Third, it is easy to cause fixture damage after car first

For the lens that can be plated first, there will be a certain degree of clamp damage and pick-and-place action damage to a certain extent.

[0006] Fourth, the single paste processing process is long and inefficient, and the pass rate is low

[0007] To sum up, the traditional process will cause many products to be scrapped, and the yield rate is low

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