Balanced molding of optical elements

Details Balanced molding of optical elements Balanced molding of optical elements

1989-04-03

1990-07-17

Schor, Kenneth M.

Glass manufacturing

Processes

With measuring, sensing, inspecting, indicating, or testing

65 64, 65102, 65111, 65275, C03B 2900, C03B 2300

Patent

active

049419064

ABSTRACT:
Glass optical elements are molded by moving molds toward one another to press the glass and controlling the movement of the molds to balance the complete formation of the molded surfaces. A first mold is moved to a position short of contact with the glass and parked. A second mold is moved into contact with the glass to drive the glass into contact with the molding surface of the first mold. This changes the shape of the optical surface in contact with the second mold so that continued movement of the first and second molds results in balanced molding with the voids between the molding surfaces and the glass being equivalent for both surfaces.

REFERENCES:
patent: 3874777 (1975-04-01), Deeg et al.
patent: 4435200 (1984-03-01), Joorman et al.
patent: 4481023 (1984-11-01), Marechal et al.
patent: 4591373 (1986-05-01), Sato
patent: 4629487 (1986-12-01), Monji et al.
patent: 4629489 (1986-12-01), Hirota et al.
patent: 4696692 (1987-09-01), Schmitt

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