Patent · US Active

Interference filter and method for producing it

US8000002B2 · kind B2 · utility

1Cited by

7References

14Claims

0Family size

Assignee

Schott AG · DE

Inventors

Ulf Brauneck · Groß-Umstadt, DE
Ulrich Jeschkowski · Mainz, DE
Thomas Strohmaier · Mainz, DE
Wolfgang Erbach · Guldental, DE

Key dates

Filing date	May 29, 2008
Grant date	Aug 16, 2011
Priority date	—
Expiry date	Nov 18, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S359/90
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention is based on the object of providing UV interference filters having improved long-term stability. For this purpose, a method for producing a dielectric transmission interference filter is provided, in which an alternating layer system having the constituents magnesium fluoride, lead fluoride and antimony oxide is produced on a substrate by co-evaporation. After deposition, the substrate is subjected to heat treatment and irradiated with UV light in order to stabilize the layer system.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.