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:
Sep. 18, 2007
Filed:
Mar. 17, 2006
Yuji Manabe, Kamakura, JP;
Kiyoshi Numazaki, Zama, JP;
Hisao Oozeki, Kawagoe, JP;
Tomoko Hattori, Legal Representative, Yokohama, JP;
Yuji Manabe, Kamakura, JP;
Kiyoshi Numazaki, Zama, JP;
Hisao Oozeki, Kawagoe, JP;
Tomoko Hattori, legal representative, Yokohama, JP;
Nikon Corporation, Tokyo, JP;
Abstract
A cross dichroic prism color-synthesizes a plurality of color lights having entered therein separately and emits color-synthesized light to a projection lens. The cross dichroic prism includes a first dichroic film; and a second dichroic film intersecting the first dichroic film so as to pass through the first dichroic film. The cross dichroic prism is configured so that a color light having entered the cross dichroic prism and having become diffracted at a gap created in the first dichroic film over an area where the second dichroic film passes through the first dichroic film is not projected through the projection lens.