Optical glass, press-molding preform and optical element

Details Optical glass, press-molding preform and optical element Optical glass, press-molding preform and optical element

2006-08-08

2006-08-08

Lorengo, J. A. (Department: 1755)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S064000, C501S065000, C501S066000, C501S067000, C501S903000

Reexamination Certificate

active

07087543

ABSTRACT:
An optical glass having a refractive index (nd) of 1.57 to 1.67, an Abbe's number (νd) of 55 to 65 and a glass transition temperature (Tg) of 560° C. or lower and having a low-temperature softening property and excellent climate resistance or a haze value of 3% or less, or an optical glass comprising, by mol %, 22 to 40% of B2O3, 12 to 40% of SiO2, 2 to 20% of Li2O, 5 to 15% of CaO, 2 to 14% of ZnO, 0.5 to 4% of La2O3, 0 to 3% of Gd2O3, 0 to 3% of Y2O3, the total content of La2O3, Gd2O3and Y2O3being at least 1%, 0 to 5% of Al2O3, 0 to 3% of ZrO2and 0 to 5% of BaO, the total content of the above components being more than 96%, and having a refractive index (nd) of 1.57 to 1.67 and an Abbe's number (νd) of 55 to 65.

REFERENCES:
patent: 4343908 (1982-08-01), Faulstich et al.
patent: 4486541 (1984-12-01), Gliemeroth et al.
patent: 5340778 (1994-08-01), Kloss et al.
patent: 5472918 (1995-12-01), Onozawa
patent: 5744409 (1998-04-01), Hashimoto et al.
patent: 5919718 (1999-07-01), Hirota et al.
patent: 5932501 (1999-08-01), Brocheton
patent: 6380112 (2002-04-01), Kolberg et al.
patent: 6713419 (2004-03-01), Onozawa et al.
patent: 6816235 (2004-11-01), Kido et al.
patent: 03005341 (1991-01-01), None
patent: 3150992 (1992-10-01), None
patent: 2872899 (1995-06-01), None
patent: 11079781 (1999-03-01), None
patent: 2000302479 (2000-10-01), None
patent: 2002187735 (2002-07-01), None
patent: 2003176151 (2003-06-01), None
patent: 2004002178 (2004-01-01), None
patent: WO 200021895 (2000-04-01), None
patent: WO 200160753 (2001-08-01), None
Derwent-Acc-No. 2003-725226, Derwent Abstract of JP 2003-176151 A.
Derwent-Acc-No. 2004-094166, Derwent Abstract of JP 2004-2178 A.
Derwent-Acc-No. 2001-141379, Derwent Abstract of JP 2000-302479 A.
Derwent-Acc-No. 1991-054676, Derwent Abstract of JP 3-5341 A.

Affiliated with

Also associated with

Rating

Optical glass, press-molding preform and optical element does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical glass, press-molding preform and optical element, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical glass, press-molding preform and optical element will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3676345