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:
Dec. 09, 2003
Filed:
Sep. 05, 2002
Yasuo Hira, Yokohama, JP;
Other;
Abstract
A rear projection apparatus having a projector containing a light source and a liquid crystal cell, a mirror for reflecting a light from the projector, and a screen for projecting the light reflected by the mirror. The screen is being composed of an optical film having an optical element capable of forming a spatial distribution of light transmittance, a light shield layer and a light diffusion layer. The light shield layer is positioned between the optical element and the light diffusion layer and is composed of a compound which changes light transmittance depending on irradiation of an energy beam. The light transmittance passing the light shield layer is modulated spatially depending on a dose of the energy beam.