US Patent 7748852 Digital planetarium apparatus
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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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Patent Inventor Names
Junji Nishigaki0
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US Patent 07748852 Digital planetarium apparatus US Patent 7748852 Digital planetarium apparatus
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Patent Number
077488520
Patent Number
77488520
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Official Website
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Patent Jurisdiction
Patent Number
077488520
Date of Patent
July 6, 2010
0Patent Application Number
116496810
Date Filed
January 4, 2007
0Official Website
Patent Primary Examiner
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US Patent 07748852 Digital planetarium apparatus
Infobox
Is a
Patent jurisdiction
Patent number
07748852
Date of patent
July 6, 2010
Patent application number
11649681
Date Filed
January 4, 2007
Patent primary examiner
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