Optical glass, precision press-molding and process for the...

Details Optical glass, precision press-molding and process for the... Optical glass, precision press-molding and process for the...

2011-06-07

2011-06-07

Group, Karl E (Department: 1731)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S050000, C501S079000

Reexamination Certificate

active

07955998

ABSTRACT:
A high-refractivity optical glass which has both a low-temperature softening property suitable for precision press-molding and glass stability suitable for hot-shaping of a preform, which contains, by mass %, 13 to 30% of B2O3, 0.1 to 4% of Li2O, 17 to 35% of ZnO, 15 to 45% of La2O3, 4 to 15% of Ta2O5exclusive of 15%, 0 to 10% of ZrO2, 0 to 10% of Nb2O5provided that Ta2O5/(Ta2O5+ZrO2+Nb2O5)>0.3, 0 to 20% of WO3and 0 to 1% of Sb2O3and which has a refractive index (nd) of 1.80 to 1.84 and an Abbe's number (νd) of 40.0 to 45.0.

REFERENCES:
patent: 6797659 (2004-09-01), Uehara
patent: 6844279 (2005-01-01), Hayashi et al.
patent: 6977232 (2005-12-01), Hayashi et al.
patent: 2003/0022782 (2003-01-01), Uehara
patent: 2003/0100433 (2003-05-01), Hayashi et al.
patent: 2003/0125186 (2003-07-01), Hayashi et al.
patent: 2004/0186003 (2004-09-01), Uehara
patent: 2004/0235638 (2004-11-01), Uehara et al.
patent: 2005/0049135 (2005-03-01), Hayashi
patent: 2005/0113240 (2005-05-01), Hayashi et al.
patent: 2005/0223743 (2005-10-01), Hayashi
patent: 2006/0079389 (2006-04-01), Hayashi
patent: 2009/0062101 (2009-03-01), Uehara
patent: 06-305769 (1994-11-01), None
patent: 08-217484 (1996-08-01), None
patent: 2002-362938 (2002-12-01), None
patent: 2003-201142 (2003-07-01), None
patent: 2002-12443 (2005-01-01), None
patent: 2005-272253 (2005-10-01), None
patent: 2005-298262 (2005-10-01), None
patent: 2005-330154 (2005-12-01), None
patent: 2006-240889 (2006-09-01), None
patent: WO 2006093062 (2006-09-01), None
Machine Translation of JP 2002-012443, Jan. 15, 2002.

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