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Patent Searching and Data


Title:
METHOD AND DEVICE FOR PRODUCING LENS
Document Type and Number:
WIPO Patent Application WO/2000/012291
Kind Code:
A1
Abstract:
A resin sheet (10) is plastic-deformed by being placed on and aligned with a female mold (11) and by being pressed by a male mold (12) from above, with both the female mold (11) and the male mold (12) heated by heaters and a mold release agent applied to molding faces. A plurality sets of female and male molds (11, 12) act on the resin sheet (10), which is then heat-radiated and cooled by being exposed to a cool air after thermal pressing is terminated by stopping heating and releasing the pressure. When the temperature lowers to approach room temperature several minutes after the termination of the thermal pressing, the male mold (12) is lifted for mold releasing, thereby forming lens portions (10a) molded at a plurality of locations on the resin sheet (10).

Inventors:
MARUYAMA TAKAYUKI (JP)
KOMATSU NORIYUKI (JP)
Application Number:
PCT/JP1999/004665
Publication Date:
March 09, 2000
Filing Date:
August 27, 1999
Export Citation:
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Assignee:
SEIKO EPSON CORP (JP)
MARUYAMA TAKAYUKI (JP)
KOMATSU NORIYUKI (JP)
International Classes:
B29C51/08; B29D11/00; (IPC1-7): B29C51/08; B29C51/32; B29C51/44
Foreign References:
JPH1025118A1998-01-27
JPH03223127A1991-10-02
JPS6469313A1989-03-15
US4778439A1988-10-18
JPH02162012A1990-06-21
Attorney, Agent or Firm:
Suzuki, Kisaburo (Owa 3-chome Suwa-shi, Nagano, JP)
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