Molding method for optical element

Details Molding method for optical element Molding method for optical element

1996-08-01

1999-12-21

Derrington, James

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65111, 65305, 65275, 65319, 264 11, C03B 2100, C03B 2300, C03B 2500, C03B 2700

Patent

active

06003338&

ABSTRACT:
A molding method for optical element is disclosed in which a glass material prepared for weight is introduced into a mold and then heated to soften, and subsequently pressed with the mold to mold an optical element. The glass material is heated to have a viscosity of 10.sup.5 to 10.sup.7 dPaS and press-molded with the mold having a temperature equivalent to a viscosity of 10.sup.9 to 10.sup.11 dPaS of the glass material.

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patent: 4435200 (1984-03-01), Joormann et al.
patent: 4734118 (1988-03-01), Marechal et al.
patent: 5032160 (1991-07-01), Murata et al.
patent: 5188650 (1993-02-01), Nomura
patent: 5192352 (1993-03-01), Kuwabara et al.
patent: 5344476 (1994-09-01), Tomida

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