Method and apparatus for molding optical components

Details Method and apparatus for molding optical components Method and apparatus for molding optical components

1983-07-15

1986-02-11

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Changing mold size or shape during molding or with shrinkage...

264207, 264161, 264163, 425218, 425292, 425352, 425447, 425553, 425555, 425808, B29D 1100

Patent

active

045698074

ABSTRACT:
As in the conventional manner for molding an optical component, a molding cavity is used in combination with a relief chamber with which the molding cavity can selectively communicate. There is no communication between the relief chamber and the molding cavity while the latter is filled. The molding cavity is then placed in communication with the relief chamber. Subsequently, relative displacement of the relief chamber and the molding cavity parallel to the axis of the combination interrupts such communication. The optical component thus molded may be of any kind, such as an optical lens, specifically an ophthalmic lens.

REFERENCES:
patent: 3005234 (1961-10-01), Oriani et al.
patent: 4091057 (1978-05-01), Weber
patent: 4364878 (1982-12-01), Laliberte et al.

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