Optical glass

Details Optical glass Optical glass

2007-10-10

2010-11-23

Group, Karl E (Department: 1793)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S047000, C501S048000

Reexamination Certificate

active

07838450

ABSTRACT:
An optical glass having a refractive index (nd) within a range from 141 to 1.47 and an Abbe number (νd) within a range from 90 to 100 comprises in mass % on element basis:P 0.1-5.0%Al 1.0-20.0%F30.0-60.0% andO 1.0-20.0%and comprises, as an essential component, one or more elements selected from the group consisting of Ca, Sr and Ba. In this optical glass, the ratio (Si+B+P+Al)/F is within a range from 0.15 to 0.40.

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German Office Action dated Aug. 14, 2009, issued in corresponding German Patent Application No. 10 2007 047 490.5-45.
Japanese Office Action mailed on Jan. 5, 2010, issued in corresponding Japanese Patent Application No. 2006-276901.

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