Optical glass and optical product using the same

Details Optical glass and optical product using the same Optical glass and optical product using the same

2006-02-07

2006-02-07

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S045000, C501S047000, C501S048000, C501S037000, C501S038000

Reexamination Certificate

active

06995101

ABSTRACT:
An optical glass having a high refractive index and high dispersion characteristics suitable for application to precision press molding to precisely mold final products without requiring grinding or polishing. An optical glass can be prepared exhibiting a refractive index in the range of from 1.75 to 2.0, and an Abbé number in the range of from 20 to 28.5. Optical parts comprised of this glass; press-molding materials comprised of this glass; methods of manufacturing the same; and methods of manufacturing molded glass products employing these materials. A suitable optical glass is composed of the following in molar percent: 15–30% P2O5; 0.5–15% B2O3; 5–25% Nb2O5; 6–40% WO3; 4–45% of at least one of Li2O, Na2O or K2O; 1–5% K2O; 2–9% TiO2; and 0–30% (excluding 30%) of at least one RO selected from among BaO, ZnO, and SrO; with the total content of the above-stated components being equal to or more than 95 percent.

REFERENCES:
patent: 4115131 (1978-09-01), Ishibashi et al.
patent: 4439530 (1984-03-01), Tajima
patent: 6333282 (2001-12-01), Nakahata et al.
patent: 32 45 615 (1983-08-01), None
patent: 1 078 894 (2001-02-01), None
patent: 1 078 894 (2001-02-01), None
patent: 07-097234 (1995-04-01), None
patent: 7-247135 (1995-09-01), None
patent: 7-247136 (1995-09-01), None
Database WPI, Derwent Publications Ltd., AN 1999-076322, XP002271306, JP 10 316448 A (Sumita Kogaku Glass KK), Dec. 2, 1998.
Supplementary European Search Report issued in Application No. EP 01 94 3871, mailed Mar. 8, 2004.

Affiliated with

Also associated with

Rating

Optical glass and optical product using the same 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 and optical product using the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical glass and optical product using the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3648512