Forming die for optical element

Abstract

A mould for forming an optical element with adjustable thickness has the first mould core with the first moulding surface, and the second mould core cooperating with the first one and with a moulding cavity, an embedded part in said moulding cavity and having the second moulding surface, a fixed pad with a screwed through hole, and an adjusting screw in said screwed through hole and fixed to said embedded part.

Description

【Technical field】 [0001] The invention relates to a mold, in particular to an optical element forming mold. 【Background technique】 [0002] In recent years, with the development of multimedia, there is an increasing demand for optical components mounted on laptop computers, videophones, and mobile phones. This increase in demand requires further miniaturization and low cost of the optical components themselves. Optical components such as micro-lenses, light guide plates, etc., are usually molded by injection molding. The use of injection molding can greatly improve production efficiency and output, and reduce costs. [0003] The traditional optical element injection molding mold usually includes a first parting mold and a second parting mold that cooperate with each other. The first parting mold and the second parting mold respectively include a mold base and are embedded in the mold base and have a molding surface In the mold core, an insert with the molding surface can ...

AI Technical Summary

Problems solved by technology

[0004] However, when it is necessary to change the molding thickness of the optical element, the above-mentioned molding mold needs to disassemble the whole set of molds, and grind the bottom surface of the mold core or insert to increase the molding thickness of the optical element, or add a fixed part to the mold core or insert. spacer to raise its height to reduce optic molding thickness

This causes great inconvenience, and the mold of the optical element is also very precise. If the mold is disassembled and modified many times, it may cause problems such as mold wear and eccentricity, which will affect the service life of the mold and lead to a decline in the quality of the molded product of the optical element.

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