Title:
MOLD FOR INJECTION MOLDING PLASTIC LENS
Document Type and Number:
Japanese Patent JPH0911282
Kind Code:
A
Abstract:
To provide a mold capable of producing a prism lens without damaging productivities of injection molding and injection compression molding.
In a mold having a pair of specular surface inserts 7 having specular surfaces 6b and 7a which respectively correspond to a top face and a rear face of a lens, the specular surface inserts 7 can be set in such a manner that a relative angle of a main axis in the two specular surfaces 6b and 7a becomes a predetermined angle.
Inventors:
SAKAMOTO KAZUYUKI
Application Number:
JP16858695A
Publication Date:
January 14, 1997
Filing Date:
July 04, 1995
Export Citation:
Assignee:
NIKON CORP
International Classes:
B29C33/42; B29C45/10; B29C45/26; B29L11/00; (IPC1-7): B29C45/26; B29C33/42; B29C45/10
Next Patent: INJECTION MOLDING DIE