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:
Oct. 19, 2004
Filed:
Feb. 22, 2002
Seiko Epson Corporation, Tokyo, JP;
Abstract
The projector comprises: an illumination optical system for emitting light; an electro-optical device for modulating the light emitted from the illumination optical system in response to image information; a projection optical system for projecting a modulated light generated by the electro-optical device; and an optical component having a rock crystal member composed of rock crystal, the optical component being located in an optical path including the illumination optical system and the projection optical system. For example, the optical component provided on a light incident side or a light exiting side of the electro-optical device has a rock crystal substrate G as the rock crystal member and a polarizing plate Go arranged on the substrate. It is preferable that a Z axis of the rock crystal substrate G is set to be substantially parallel to or substantially perpendicular to the surface of the substrate.