Projector having holographic recording medium and light modulation element
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United States of America Patent
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Jul 21, 2015
Grant Date -
Dec 13, 2012
app pub date -
Jun 8, 2012
filing date -
Jun 10, 2011
priority date (Note) -
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Abstract
A projector includes: a laser light source that emits laser light; a condensing optical system that collimates the laser light; a holographic recording medium that, when laser light for reproduction is incident thereupon, emits a reproduced holographic optical image on the basis of a holographic image; a light modulation element that modulates the reproduced holographic optical image and emits the result to a projection optical system as an optical image for projection; a projection optical system that projects the optical image for projection; and a focal depth adjustment unit that adjusts a focus depth of the ray bundle projected by the projection optical system.
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