Rear projection screen and method for the production thereof

US7064894B2 · kind B2 · utility

Assignee

• ROEHM GMBH & CO. KG · DE

Inventors

• Markus Parusel · Messel, DE
• Jann Schmidt · Darmstadt, DE
• Herbert Groothues · Frankfurt, DE
• Wolfgang Scharnke · Darmstadt, DE
• Hans Lorenz
• Helmut Haering · Reinheim, DE
• Guenther Dickhaut-Bayer · Riedstadt, DE

Key dates

• Filing date: Sep 27, 2003
• Grant date: Jun 20, 2006
• Expiry date: Dec 5, 2023

Classification

• Technology area (CPC G): Physics
• CPC primary: G03B21/62
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A rear-projection screen that has at least one light-scattering polymethyl methacrylate layer in which is embedded spherical plastic particles; the previously described rear-project screen that has an additional plastic sheet that does not have embedded scattering beads; and a method of making a rear-projection screen.