Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Junji Nishigaki0
Date of Patent
July 6, 2010
0Patent Application Number
116496810
Date Filed
January 4, 2007
0Patent Primary Examiner
Patent abstract
A digital planetarium apparatus includes an original image generator, an intermediate image generator, and a fish-eye lens. The original image generator is formed of two video projectors and generates semicircular images in display devices inside the respective video projectors. The intermediate image generator optically focuses the two semicircular images generated by the original image generator to thereby generate a circular image. The fish-eye lens projects the circular image generated by the intermediate image generator.
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