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Cavity manufacturing method

A manufacturing method and technology of mold cores, applied in the field of mold core manufacturing, can solve the problems of low output, high cost of manufacturing equipment, and low precision of mold cores, and achieve the effects of simple manufacturing process, low cost, and high replication accuracy

Inactive Publication Date: 2009-11-11
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the traditional method of manufacturing microlens mold cores and the process of using these mold cores to manufacture microlenses are cumbersome, and the output is not high, and the precision of the mold cores manufactured by the above method is low, and the obtained lenses have poor consistency and size. Too large, or the cost of manufacturing equipment is high, which is not conducive to mass production

Method used

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  • Cavity manufacturing method
  • Cavity manufacturing method
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Embodiment Construction

[0012] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0013] see figure 1 , the mold core manufacturing process provided by the embodiment of the present invention includes the following steps:

[0014] providing a master mold having a forming surface whose shape is complementary to the shape of the predetermined structure;

[0015] Coating polydimethylsiloxane material on the molding surface;

[0016] curing the polydimethylsiloxane material;

[0017] The polydimethylsiloxane material is turned over to obtain a mold core.

[0018] Wherein, the preset structure refers to the structure of the microlens to be manufactured, such as spherical surface, aspheric surface, concave surface, convex surface and the like. The shape of the molding surface of the master mold is just complementary to the shape of the preset structure, and the size is consistent.

[0019] see figure 2 , the master mold 20 provided in thi...

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Abstract

The invention provides a cavity manufacturing method. A cavity is used for manufacturing a lens having a preset structure. The method comprises the following steps: providing a female die with a forming surface of which the shape is complemental with that of the preset structure; coating a dimethyl silicone polymer material on the forming surface; curing the dimethyl silicone polymer material; androlling over the dimethyl silicone polymer material to obtain the cavity.

Description

technical field [0001] The invention relates to a method for manufacturing a mold core, in particular to a method for manufacturing a micro mold core for manufacturing microlenses. Background technique [0002] At present, with the miniaturization of the lens module, making the lens miniaturized and miniaturized has become a research topic for researchers. The current microlens manufacturing technology includes photoresist thermal reflow method, polymethyl methacrylate (PMMA, polymethyl methacrylate) volume expansion and contraction method, droplet method, gray scale mask (gray scale) method, gradient refraction method And double-layer photoresist reflow method. [0003] However, the traditional method of manufacturing microlens mold cores and the process of using these mold cores to manufacture microlenses are cumbersome, and the output is not high, and the precision of the mold cores manufactured by the above method is low, and the obtained lenses have poor consistency an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C41/08B29C41/40B29C71/02B29K83/00B29L11/00
CPCB29C33/3857B29C41/085B29C33/424B29C41/003B29C41/38B29K2083/00B29D11/0048
Inventor 庄信弘
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD