Fluorophosphate glass and process of making same

US3954484A · kind A · utility

Assignee

• Ernst Leitz GmbH

Inventors

• Heinz Broemer · Wetzlar, DE
• Norbert Meinert · Witzenhausen, DE

Key dates

• Filing date: Aug 22, 1974
• Grant date: May 4, 1976
• Expiry date: Aug 22, 1994

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C3/247
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A fluorophosphate glass which has an index of refraction n.sub.e of more than 1.57, an Abbe number .nu..sub.e of less than 70, and a relatively high positive anomalous partial dispersion +.DELTA..nu..sub.e is provided.