Projection apparatus and projection control apparatus
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United States of America Patent
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Nov 28, 2017
Grant Date -
Sep 1, 2016
app pub date -
May 11, 2016
filing date -
Apr 28, 2011
priority date (Note) -
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Abstract
A projection apparatus has an optical device configured to be capable of diffusing coherent light beams, an irradiation unit configured to irradiate the coherent light beams to the optical device so that the coherent light beams scan the optical device, a light modulator that is illuminated by coherent light beams incident on and diffused at respective points of the optical device from the irradiation unit, a projection optical system configured to project a modulated image generated by the light modulator onto a scattering plane, and an intermediate optical system provided between the optical device and the light modulator, configured to restrict an diffusion angle of coherent light beams diffused by the optical device.
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