Photo-addressable substrates and photo-addressable side-group polymers with highly inducible double refraction

US6423799B1 · kind B1 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Horst Berneth · Leverkusen, DE
• Uwe Claussen · Leverkusen, DE
• Serguei Kostromine · Rheinbach, DE
• Ralf Neigl · Leverkusen, DE
• Hans-Joachim Vedder · Puchheim, DE

Key dates

• Filing date: Nov 17, 1998
• Grant date: Jul 23, 2002
• Expiry date: Nov 17, 2018

Classification

• Technology area (CPC G): Physics
• CPC primary: G03H2240/52
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Disclosed is an extremely rapidly photo-addressable storage media from inherently slow photo-addressable polymers by irradiating a substrate over a large area with a light source suitable for conventional inscription so that an optical anisotropy, i.e. a double refraction with a preferential direction in the plane of the substrate occurs. If the substrates so prepared are briefly intensively irradiated, the pattern is inscribed extremely rapidly and permanently. The invention also relates to novel side-chain polymers in which high optical anisotropy can be generated by irradiation. This optical anisotropy is very heat stable.