Method for the production of a porous layer

US6413408B1 · kind B1 · utility

Assignee

• Forschungszentrum Jülich GmbH · DE

Inventors

• Michael Berger · Bad Vilbel, DE
• Michael Kruger · Aachen, DE
• Markus Thonissen · Nettetal, DE
• Rüdiger Arens-Fischer · Aachen, DE
• Hans Luth · Aachen, DE
• Walter Lang · Villingen-Schwenningen, DE
• Wolfgang Theiss · Aachen, DE
• Stefan Hilbrich · Herzogenrath, DE

Key dates

• Filing date: Jun 19, 1999
• Grant date: Jul 2, 2002
• Expiry date: Jun 19, 2019

Classification

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

Abstract

An interference filter having a layer with an area consisting of a porous material extending from the surface of the layer to the interior, the dimensions of the porous layer area in a direction normal to the layer surface have different values to provide for varying reflection or, respectively, transmission characteristics.