Molding method using glass blank

Details Molding method using glass blank Molding method using glass blank

1991-07-17

1993-03-09

Lindsay, Robert L.

Glass manufacturing

Processes

With coating

65102, 65111, 65122, 65 37, 425808, 428428, 428432, C03C 2502, C03B 1108

Patent

active

051923521

ABSTRACT:
The present invention relates to a glass blank for producing optical element used for the press molding thereof, having a core glass and a surface layer covering at least the optically functional surface of the core glass. The surface layer consists of an evaporation glass. This invention also relates to the technique to mold a glass lens using the glass blank.

REFERENCES:
patent: 3899314 (1975-08-01), Siegmund
patent: 3907534 (1975-09-01), Jonsson et al.
patent: 3934961 (1976-01-01), Hoh et al.
patent: 4139677 (1979-02-01), Blair et al.
patent: 4629487 (1986-12-01), Monji et al.
patent: 4756737 (1988-07-01), Yoshimura et al.
patent: 4842630 (1989-06-01), Braithwaite et al.

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