Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Composite or multiple layer
Patent
1987-04-08
1991-01-15
Lowe, James
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Composite or multiple layer
264 11, 264 23, 264101, 264316, 264335, 425437, 425808, B29D 1100
Patent
active
049851861
ABSTRACT:
A process for producing an optical element wherein an optical molding is formed by using a mold and thereafter released from the mold by supplying a gas to the boundary between the mold surface and the optical molding. In the process, no localized external force is applied to the optical molding during the release thereof, and therefore undesirable deformation or flaws of the optical molding are not caused.
REFERENCES:
patent: 3529458 (1970-09-01), Butler et al.
patent: 4038014 (1977-07-01), Dusza et al.
patent: 4312575 (1982-01-01), Peyman et al.
patent: 4385025 (1983-05-01), Salerno et al.
patent: 4657354 (1987-04-01), Kobayashi
Baba Takeshi
Kawakami Eigo
Kushibiki Nobuo
Matsugu Masakazu
Nakajima Toshiyuki
Canon Kabushiki Kaisha
Lowe James
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