US Patent 8238013 Projection apparatus using micromirror device
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Patent abstract
A projection apparatus comprising a micromirror device for reflecting and modulating a light emitted from a light source to project a display an image on a display screen. The projection apparatus further includes a projection optical system comprises an adjustable aperture for adjusting an aperture ratio to control an amount of output light reflected from the micromirror device to the image display screen.
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Patent Inventor Names
Fusao Ishii0
Hirotoshi Ichikawa0
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US Patent 08238013 Projection apparatus using micromirror device US Patent 8238013 Projection apparatus using micromirror device
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Patent Number
082380130
Patent Number
82380130
Edits on 27 Mar, 2023
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Infobox
Is a
Patent Jurisdiction
Patent Number
082380130
Date of Patent
August 7, 2012
0Patent Application Number
123815860
Date Filed
March 12, 2009
0Patent Primary Examiner
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US Patent 08238013 Projection apparatus using micromirror device
Infobox
Is a
Patent jurisdiction
Patent number
08238013
Date of patent
August 7, 2012
Patent application number
12381586
Date Filed
March 12, 2009
Patent primary examiner
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