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:
Nov. 27, 2001
Filed:
Jun. 18, 1999
Motoyuki Fujimori, Suwa, JP;
Kazuyuki Iinuma, Hotaku-Machi, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A projection display device is provided having a mounting mechanism of a modulation element which does not cause pixel displacement at variable temperature when the pixel pitch is reduced. The projection display device is provided with a frame fixed to the light incident face of a prism composite, an intermediate frame detachably mounted to the fixed frame, a screw for fixing the fixed frame and the intermediate frame, a modulation element frame detachably mounted to the intermediate frame for holding a modulation element, a wedge for positioning the modulation element frame and the intermediate frame, and an adhesive layer for fixing the modulation element frame to the intermediate frame with the wedge therebetween. The intermediate frame is provided with a slit which facilitates elastic deformation of portions other than the fixed section for fixing the wedge.