Production and producing device for aspherical moulded glass

A manufacturing method and aspheric technology, which are applied in glass manufacturing equipment, glass pressing, manufacturing tools, etc., can solve the problems affecting the accuracy of aspheric surfaces, uneven surfaces of aspheric glass, and difficult polishing, and reduce thermal expansion. , Improve the Ra value, the effect of good shape accuracy

Inactive Publication Date: 2006-05-31
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Abstract
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  • Application Information

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 plat

Method used

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  • Production and producing device for aspherical moulded glass
  • Production and producing device for aspherical moulded glass
  • Production and producing device for aspherical moulded glass

Examples

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Embodiment Construction

[0025] The present invention is a method for manufacturing an aspheric molded glass with a nanoscale surface. The manufacturing method will be described below in conjunction with specific diagrams.

[0026] See figure 1 , the ordinate Φ(α, Cp, u) function represents the physical and mechanical properties of the aspheric molded glass, where the physical parameters: α represents the thermal expansion coefficient, Cp represents the heat capacity, u represents the viscosity of the glass; the abscissa represents the temperature, the curve in this figure Middle T 1 Indicates the forming temperature, T 2 Represents transition temperature, Tg represents glass transition temperature, T 3 Indicates the cooling temperature. In the glass molding process, the Tg point temperature is more important in molded glass. The material of molded glass is different, and its glass transition temperature Tg is correspondingly different. Usually after determining the Tg temperature, the forming tem...

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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...

Claims

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Application Information

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IPC IPC(8): C03B11/00
CPCC03B11/122C03B11/125C03B11/16C03B2215/69
Inventor 陈杰良
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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