The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 31, 2015
Filed:
Jan. 25, 2008
Eberhard Piehler, Lehesten, DE;
Gudrun Schroeter, Jena, DE;
Guenther Benedix, Jena, DE;
Gertrud Blei, Jena, DE;
Thomas Maack, Rastenberg, DE;
Eberhard Piehler, Lehesten, DE;
Gudrun Schroeter, Jena, DE;
Guenther Benedix, Jena, DE;
Gertrud Blei, Jena, DE;
Thomas Maack, Rastenberg, DE;
Young Optics Inc., Hsinchu, TW;
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.