Optical lens coating apparatus and method

Abstract

The present invention is optical lens filming apparatus and method. The optical lens filming apparatus is vacuum evaporation plating apparatus comprising pedestal, heater, evaporation source and vacuum chamber. The pedestal comprises work bench, fixture and height regulator, the fixture is set on the work bench and the height regulator is set vertically on two sides of the work bench. The evaporation source locates between the heater and the part to be plated. The height regulator includes support frame and shade mask with several ring through holes. Regulating the vertical height between the shade mask and the aspheric lens can reduce the coagulation of evaporated elements on the plated area to make the plated coating homogeneous.

Description

【Technical field】 [0001] The invention relates to a coating device and method of an optical lens, in particular to a coating device and method of an aspheric lens. 【Background technique】 [0002] For an ideal lens, the light can completely pass through the lens and be fully focused on the negative film or CCD (Charge Coupled Device, Charge Coupled Device sensor), but any object has a reflection effect on the light. Lanthanum oxide optical glass For example, its light transmittance can reach 90%, and the remaining 10% of the light is reflected as glare; in addition, the general lens has poor wear resistance and corrosion resistance, and long-term use will easily cause the mirror surface to wear, deteriorate or break. Therefore, the surface coating treatment is generally required after the lens is formed. According to the needs, the surface of the lens can be coated with antistatic film, wear-resistant film, anti-reflection film, broadband multilayer film, narrowband multilaye...

AI Technical Summary

Problems solved by technology

Since the edge of the aspheric lens surface has a large inclination angle, during the evaporation process, the inclination angle of the lens inclination is often different, and it is emitted from the evaporation source at the same time and condenses on the edge and center of the aspheric lens surface. The element probabilities of different elements are quite different, resulting in different thicknesses of the film layers, and the center of the lens film layer is thick and the edge is thin, which affects the imaging quality of the lens.

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