Method of press molding lens material

Details Method of press molding lens material Method of press molding lens material

1989-10-05

1991-07-16

Fisher, Richard V.

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65 64, 65110, 65275, 264 12, 264 27, C03B 2100

Patent

active

050321609

ABSTRACT:
A lens molding method where a lens material is set between an upper mold and a lower mold, and the molding pressure is reduced or made zero at least once during a heating & pressing step without the mold surfaces breaking contact with the lens materials, and during a cooling & pressing step.

REFERENCES:
patent: 4451418 (1984-05-01), Furuta et al.
patent: 4629489 (1986-12-01), Hirota et al.
patent: 4778505 (1988-10-01), Hirota et al.

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