An optical flurophosphate glass of high positive anomalous partial disperation within the range of from about +10.0 to about +21.0, a relatively high index of refraction ne within the range of from about 1.47 to 1.54 and an Abbe number number ve within the range from about 84.1 to about 51.0 said glass being composed of the following components...
Origin
Unknown
Journal Title
Ernst Leitz Gmbh Wetzlar Germany March 17 1976
Sector
Primary Papers
Class
PP 941