Production and producing device for aspherical moulded glass

Abstract

Production of non-spherical moulded glass and its device are disclosed. The procedure is carried out by raising temperature shape temperature T1 with normal pressure and mould core position as initial position, keeping temperature for 10-15 seconds, raising pressure to the first pressure P3, keeping pressure for 5 seconds, releasing mould core, raising pressure to shape pressure P1, keeping temperature and pressure for 45 seconds at shape temperature, lowering pressure to cooling pressure P4, cooling for 15 seconds, and lowering temperature to cool temperature T3 with mould core increase. The apparatus consists of thermal feedback system, cooling system and pressure system. It can develop non-spherical lens surface Ra value and reach to nanometer precision.

Description

【Technical field】 [0001] The invention relates to a manufacturing method and device of aspherical molded glass, in particular to a manufacturing method and device of aspheric molded glass with nanoscale surface. 【Background technique】 [0002] With the continuous development of science and technology, portable electronic devices with camera functions are more and more popular among consumers, such as digital cameras, video cameras and other electronic products have become the hot spots of today's consumption, and in such products, the lens used for imaging It is also constantly evolving to meet the needs of different consumers. [0003] In the prior art, the lens is generally made of glass material. At first, due to the influence of the manufacturing process, only spherical glass lenses could be processed. However, with the development of technology, various aspheric glasses can now be processed by molding methods. However, the surface roughness of the molded aspheric glass...

AI Technical Summary

Problems solved by technology

However, the surface roughness of the molded aspheric glass is difficult to meet the requirements, so the surface needs to be polished, because the surface is aspheric, and the polishing process is not easy

[0004] In another existing molded glass technology, a layer of nano-titanium dioxide TiO is plated on the glass surface. 2 Catalytic film, because the material particles themselves are nano-scale, so the surface has good process characteristics, but because of the uneven surface of the aspheric glass, the coating process is not easy to control, thus affecting the accuracy of the aspheric surface

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