Optical element mold

Abstract

The invention relates to a mold used for injection molding. The mold comprises a first parting mold, a second parting mold, a first sliding block and a second sliding block. The first parting mold andthe second parting mold are respectively provided with a joint surface, two joint surfaces are contacted with each other when in mold shutting process, and the first parting mold is inwards opened with a containing chamber from the joint surface. The first sliding block and the second sliding block are disposed in the containing chamber and can slide relatively, a first cavity insert and a firstadjusting element are disposed on the first sliding block, a second cavity insert and a second adjusting element are disposed on the second sliding block, the first sliding block and the second sliding block slide in the containing chamber via a mutual closing form to form a molding chamber between the first cavity insert and the second cavity insert, and the first adjusting element and the secondadjusting element respectively acts on the first cavity insert and the second cavity insert to adjust the size of the molding chamber.

Description

technical field [0001] The invention relates to a mold, in particular to a mold for molding optical elements. Background technique [0002] With the advancement of science and technology, in computers, communications, consumer electronics products and various precision instruments and their molds, the degree of refinement of various spare parts is getting higher and higher. For example: aspheric plastic lenses, which have been widely used in electronic products and precision optical devices, have become smaller and smaller in order to meet the needs of light, thin, short, and small products; at the same time, aspheric plastic lenses The mold structure used in the molding process also shrinks. [0003] At present, the molds used for manufacturing aspheric plastic lenses are usually two-plate molds with a relatively simple structure, and the two-plate molds usually include opposite first and second split molds. The first parting mold and the second parting mold each include ...

AI Technical Summary

Problems solved by technology

[0004] However, the thickness of the aspheric plastic lens formed by the above-mentioned two-plate mold is determined by the above-mentioned mold cavity, and the thickness of the aspheric plastic lens cannot be adjusted during the molding process, so it is necessary to develop different mold cores to manufacture aspheric surfaces of different thicknesses Plastic lenses require a longer mold development cycle

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