Title:
OPTICAL PART AND ITS MOLDING METHOD
Document Type and Number:
Japanese Patent JP2003311773
Kind Code:
A
Abstract:
To provide a highly accurate optical part, which is obtained by injection molding and has at least one effective curved surface.
In the optical part, which is obtained by injection molding and has at least one effective curved surface, the part is mainly made of a cyclic olefin based copolymer and does not have a non-transfer region having a size larger than 10 μm on the effective curved surface.
Inventors:
SHIBUYA ATSUSHI
HIROSE TOSHIYUKI
HIROSE TOSHIYUKI
Application Number:
JP2002126872A
Publication Date:
November 05, 2003
Filing Date:
April 26, 2002
Export Citation:
Assignee:
MITSUI CHEMICALS INC
International Classes:
B29C45/26; B29C45/00; C08F210/02; C08F232/08; B29K45/00; B29L11/00; (IPC1-7): B29C45/00; B29C45/26; C08F210/02; C08F232/08
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