Method for molding optical elements

Details Method for molding optical elements Method for molding optical elements

1992-04-27

1994-03-08

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Composite or multiple layer

264 14, B29D 1100

Patent

active

052924572

ABSTRACT:
A method and apparatus for molding optical elements in which a resin layer is accurately formed on a surface of a desired shape without the occurrence of peeling between a glass member and a resin layer and between a mold member and the resin layer when the resin layer is molded. This is accomplished by a first step of placing the glass member upon a supporting member, a second step of holding the glass member in a state in which the surface thereof is spaced away from the molding surface of the mold member by a predetermined distance, and a third step of moving the mold member and the supporting member relative to each other, after the resin material, which has been charged into a space defined by the molding surface and the surface of the glass member, has cured to a predetermined ratio of polymerization, in such a manner that glass member is supported on the resin layer independently.

REFERENCES:
patent: 3423488 (1969-01-01), Bowser
patent: 3428533 (1969-02-01), Pichel
patent: 4061518 (1977-12-01), Burroughs et al.
patent: 4116753 (1978-09-01), Tojyo et al.
patent: 4155962 (1979-05-01), Neefe
patent: 4159292 (1979-06-01), Neefe
patent: 4235654 (1980-11-01), Dohi et al.
patent: 4623496 (1986-11-01), Verhoeven et al.
patent: 4738516 (1988-04-01), Verhoeven et al.

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