Optical glass element and manufacturing method thereof

Details Optical glass element and manufacturing method thereof Optical glass element and manufacturing method thereof

2004-09-14

2008-08-26

Griffin, Steven P. (Department: 1791)

Glass manufacturing

Processes

Sequentially forming, reheating, and working

C065S102000, C065S127000, C065S305000

Reexamination Certificate

active

07415842

ABSTRACT:
The present invention relates to a manufacturing method for an optical glass element, in which molten glass9is pressed between a lower mold1and an upper mold8, and the pressing process is carried out while maintaining a space10between a border area (5, 6) of a molding face2belonging to the lower mold1and a circumferential face3located on the periphery thereof and glass9, and an optical glass element manufactured by such a method.

REFERENCES:
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patent: 5662999 (1997-09-01), Taniguchi et al.
patent: 5762673 (1998-06-01), Hirota et al.
patent: 5873921 (1999-02-01), Hirota et al.
patent: 6070436 (2000-06-01), Hirota et al.
patent: 6560994 (2003-05-01), Hirota
patent: 2003/0211929 (2003-11-01), Hayashi et al.
patent: 63-151632 (1988-06-01), None
patent: 06-263462 (1994-09-01), None
patent: 8-208246 (1996-08-01), None
PCT “International Search Report”, dated Jun. 28, 2005, for counterpart International Patent Application No. PCT/JP/2005/008186.

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