Method for preparing lens blank

Abstract

The invention discloses a method for preparing a lens blank. The method comprises the following steps: placing a glass blank between an upper mold and a lower mold, fixing the glass blank through tworubber plates, and moving the glass blank to a proper position by virtue of a telescopic rod B which is connected into the upper mold and the lower mold and can stretch; adjusting a telescopic rod A to be elongated, enabling the telescopic rod A to move out of an upper sleeve, and polishing the glass blank by a polishing machine, so that the surface of the glass blank is smooth; adjusting the telescopic rod A to be shortened after polishing completion, enabling the telescopic rod A to return into the upper sleeve, and enabling the telescopic rod B in the upper mold and the lower mold to be shortened, so that the glass blank is clamped between the upper mold and the lower mold; adjusting a microwave magnetron to heat the upper mold and the lower mold, and heating the glass blank; enabling the upper sleeve to slide along a sliding bar after heating completion, and enabling the upper sleeve to drive the upper mold to slide into a cooling chamber; cooling the glass blank in the cooling chamber, and finally obtaining the lens.

Description

technical field [0001] The invention relates to the field of lenses, in particular to a method for preparing a lens blank. Background technique [0002] Since entering the 21st century, with the development of digital technology, the rapid growth of the 3C industry, and the surge in demand for global digital products (such as digital cameras, smart phones, wearable products, etc.), high-precision aspheric lenses, micro Glass optical components such as lenses, microlens arrays and diffractive lenses are in increasing demand. According to statistics, by 2015, the demand in various fields is as follows: in the field of measuring instruments, about 4 billion pieces; in the field of manufacturing, about 3.6 billion pieces; in the field of medical technology, about 4 billion pieces; in the field of information technology, about 8.6 billion pieces; In the field of communication, about 3.8 billion pieces. In addition, complex aspheric optical lenses are also growing at an annual g...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that during the preparation process of the existing lens, the cooling is not uniform and when the glass blank is polished, the waste scrap generated is flying all over the sky, which is not convenient for later cleaning, and it is not conducive to people to diffuse in the air for a long time. The purpose is to provide a method for preparing lens blanks to solve the problem of lens preparation