Patent · US Active

Rear projection apparatus and method for a rear projection apparatus

US8992025B2 · kind B2 · utility

3Cited by

8References

15Claims

0Family size

Assignee

Young Optics Inc. · TW

Inventors

Eberhard Piehler · Jena, DE
Gudrun Schroeter · Jena, DE
Guenther Benedix · Jena, DE
Gertrud Blei · Jena, DE
Thomas Maack · Rastenberg, DE

Key dates

Filing date	Jan 25, 2008
Grant date	Mar 31, 2015
Priority date	—
Expiry date	Sep 23, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG02B13/16
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention relates to a rear project device, comprising a screen, projection optics, and an image module for generating an image, which is projected from the rear onto the screen by means of the projection optics, so that an observer located in front of the screen can perceive the image projected onto the screen. Furthermore, a method for such a rear projection apparatus is described. To this end, a Fresnel mirror, or an aspherical mirror, is used.

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