Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Changing mold size or shape during molding or with shrinkage...
Patent
1995-10-24
1998-02-17
Vargot, Mathieu D.
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Changing mold size or shape during molding or with shrinkage...
264 27, 264 405, 425149, 425407, 425408, 425808, B29D 1100
Patent
active
057188505
ABSTRACT:
Optical material, which was already roughly molded, is deposited into a space defined by a top mold, a bottom mold and a drum mold, and is then heated, pressed and molded, thus providing an optical element. By controlling the rate of plastic deformation of the optical material so as to prevent the material from entering clearance sections between the outside diameter of the top mold or of the bottom mold and the inside diameter of the drum mold, an optical element of high precision with no burr nor strain is provided at low cost.
REFERENCES:
patent: 2298429 (1942-10-01), Smith
patent: 2304217 (1942-12-01), Tillyer
patent: 2304663 (1942-12-01), Smith et al.
patent: 2332674 (1943-10-01), Smith
patent: 2432668 (1947-12-01), Kingston
patent: 5100590 (1992-03-01), Ruhlin
patent: 5204127 (1993-04-01), Prusha
patent: 5368790 (1994-11-01), Greshes
Kondou Takahisa
Murata Jun
Nakamura Shoji
Sunohara Masaaki
Takano Toshiaki
Matsushita Electric - Industrial Co., Ltd.
Vargot Mathieu D.
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