Method of molding chalcogenide glass lenses

Details Method of molding chalcogenide glass lenses Method of molding chalcogenide glass lenses

1993-03-31

1994-09-13

Jones, W. Gary

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65111, 65DIG15, 65275, 65319, C03B 1112

Patent

active

053465237

ABSTRACT:
An infrared transmitting chalcogenide glass lens having precision optical surfaces of different curvature radii is molded. A pair of molds having different curvature radiuses from each other, and a bushing which controls the thickness of the lens is provided. A block of chalcogenide glass is placed within the cavity. The upper mold, the lower mold and the block of glass are heated with the mold having a smaller curvature radius being at a higher temperature than the other mold. The glass is then pressed, cooled, and the resulting lens is removed from the mold assembly.

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