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:
May. 15, 2007
Filed:
Mar. 25, 2005
Masashi Kitabayashi, Horigane-mura, JP;
Masashi Kitabayashi, Horigane-mura, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An optical device capable of efficiently cooling a light modulation element and preventing deterioration in an image formed on the optical modulation element having a light modulation device. The light modulation device includes a light modulation element to modulate a luminous flux and to form an optical image; and a support frame to hold the light modulation element, the support frame having an aperture for an image-forming region of the light modulation element. The light modulation device, is formed with an aperture, and provided with a container-like coolant enclosure sealed with a coolant for cooling the light modulation element. The coolant enclosure has a first cooling chamber hermetically sealed with the coolant in a space including the aperture, and a second cooling chamber formed in a position avoiding the aperture and partitioned from the first cooling chamber to thereby allow another coolant from an exterior chamber to flow therein.