Optical elements having color-selective and polarization-selective reflection containing LC pigments, and the production of these elements

US5683622A · kind A · utility

Assignee

• Consortium für elektrochemische Industrie GmbH · DE

Inventors

• Oliver Kratzschmar · Hersbruck, DE
• Thilo Gebhard · Birkenfeld, DE
• Silvia Ehmann · Puchheim, DE
• Franz-Heinrich Kreuzer · Martinsried, DE

Key dates

• Filing date: May 5, 1995
• Grant date: Nov 4, 1997
• Expiry date: May 5, 2015

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B5/3016
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Wavelength-selective and polarization-selective optical elements contain pigments embedded in a transparent binder, in which the pigments include at least one three-dimensionally crosslinked substance having a liquid-crystalline structure with a chiral phase.