Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Naofumi Ishikura0
Jun Ogawa0
Date of Patent
December 4, 2007
0Patent Application Number
116490720
Date Filed
January 3, 2007
0Patent Primary Examiner
Patent abstract
In a projection display device that is provided with a relay lens for converting flux that is emitted from a light source to a parallel flux for illuminating an image display element (DMD), and a total internal reflection prism for both directing flux that is emitted from the relay lens to the DMD and directing flux that is reflected by the DMD toward a projection lens, the relay lens is unified with the prism as a lens-integral prism by bonding the relay lens to the total internal reflection surface of the prism.
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