Vapor-deposition material for the production of high-refraction optical coatings

US5340607A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Martin Friz · Darmstadt, DE
• Detlef Albrecht · Griesheim, DE

Key dates

• Filing date: Mar 19, 1993
• Grant date: Aug 23, 1994
• Expiry date: Mar 19, 2013

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B5/285
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to a vapor-deposition material for the production of high-refraction optical coatings by coating substrates in vacuo. The material is a compound of the formula La.sub.2 TiO.sub.7-x where x=from 0.3 to 0.7.