Heater of moulded glass

Abstract

A heater of a moulded glass apparatus consists of a mould, a glass pre-former and multiple heaters, the mould comprises a upper mould and a lower mould, a cavity is located between the upper and lower moulds, which contains glass pre-former, the upper mould and lower mould are moving along axis. The heater consists of multiple heat sources and multiple concave mirrors, the heat energy is reflected by concave mirror to focus on upper mould or lower mould. The concave mirror revolves round the axis to control heating point. It can control temperature distribution of mould and get moulded glass with much difference between upper and lower deformation

Description

【Technical field】 [0001] The invention relates to a heating device for molded glass equipment, in particular to a heating device for molded glass equipment that can control temperature distribution. 【Background technique】 [0002] At present, digital cameras and portable electronic devices with digital camera functions are becoming more and more popular, and their requirements for image effects and appearance are getting higher and higher. Due to the low transmittance of conventional plastic lenses, it is difficult to meet higher requirements, so glass lenses are more widely used. There are generally two manufacturing methods for glass lenses, namely grinding and molding. The grinding method is mainly used for larger optical lenses due to the complicated processing process, while the molding method uses injection and pressing mold technology to produce lenses. This method does not A grinding process is required to overcome the disadvantage of difficult grinding of glass len...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that since the glass preform 23 is generally a spherical or biconvex cake-shaped structure, if the upper and lower deformations of the glass preform 23 have a large difference under the same temperature, the temperature requirement is relatively high. This will cause energy waste and reduce processing efficiency, so the shape of the molded glass lens obtained by this method is generally a biconvex lens

If it is necessary to obtain a lens with a large difference in deformation between the upper and lower sides, such as a convex lens and a concave lens, then increasing the temperature difference between the upper and lower mold cores will be a better way, but in the existing heating device, it is difficult to control the upper and lower molds. , The temperature difference of the lower mold core

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