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Method of manufacturing lens

A manufacturing method and lens technology, which can be applied to other household appliances, optical components, household appliances, etc., can solve the problems of difficulty in shortening the execution cycle of stamping and forming, and difficulty in reducing manufacturing costs.

Inactive Publication Date: 2012-08-01
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is difficult to shorten the execution cycle of press forming, thereby making it difficult to reduce manufacturing costs

Method used

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  • Method of manufacturing lens
  • Method of manufacturing lens
  • Method of manufacturing lens

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Embodiment Construction

[0032] The present invention is a method of manufacturing a lens using a molding unit. Hereinafter, an embodiment of the present invention in the production of a resin lens having two convex surfaces as optically functional surfaces will be specifically described with reference to the drawings.

[0033] In the manufacturing method of the present embodiment, a preparation step, an introduction step, a heating step, a press forming step, a parting step, and a cutting step are performed.

[0034] figure 1 It is a perspective view showing the structure 5 prepared in the preparation process. Such as figure 1 As shown, the structure 5 has a mover 50 and eight lens intermediate bodies 51 to 51 connected to each other through the flow channel 50 . Here, the structure 5 is produced by injection molding using resin such as polycarbonate resin. Furthermore, the flow path 50 is composed of eight first flow path portions 501 to 501 and a second flow path portion 502 for operating the...

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Abstract

A manufacturing method uses a molding unit to manufacture lenses out of a structure with a plurality of lens intermediates coupled to each other through a runner. The molding unit includes a holding member provided with first opening parts and second opening parts coaxial with each other, and molding chambers. First molding dies and second molding dies are inserted into the first opening parts and the second opening parts respectively. The holding member is further provided with a path that allows introduction of the lens intermediates into the molding chambers. In a manufacturing process, the lens intermediates are guided to predetermined positions in the corresponding molding chambers by operating the structure to cause the lens intermediates and the runner to move along the path. Next, a pressing pressure is applied to the lens intermediates to form molded lenses.

Description

technical field [0001] The present invention relates to a method of manufacturing a lens, and more particularly to a molding technique for manufacturing a resin lens. Background technique [0002] Figure 18 It is a cross-sectional view showing a conventional molding unit used in the production of glass lenses. Such as Figure 18 As shown, the molding unit has a first mold 81 and a second mold 82 . The first mold 81 and the second mold 82 are held by two holding portions 84 , 85 with their molding surfaces 810 , 820 facing each other, respectively. Here, the first die 81 is fixed to the holding portion 84, and the second die 82 is held by the holding portion 85 so as to be able to move in the pressing direction 83 ( Figure 18 In the downward direction) reciprocating movement. Accordingly, the first die 81 and the second die 82 can relatively approach or separate in the pressing direction 83 . Moreover, optical function transfer surfaces 811 , 821 are respectively formed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/02B29C43/32B29C43/36B29L11/00
CPCB29C2043/3626B29C2043/3615B29C2043/3444B29C45/0055B29C2043/3477B29C43/34B29C45/00B29C43/36B29C2045/0086
Inventor 匠蓝太田哲加世田泰光
Owner SANYO ELECTRIC CO LTD
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