Projector having polarization conversion
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United States of America Patent
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Apr 7, 2015
Grant Date -
Sep 5, 2013
app pub date -
Feb 25, 2013
filing date -
Mar 2, 2012
priority date (Note) -
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Abstract
A projector includes a solid-state light source that emits linearly polarized light, a birefringence element that converts the linearly polarized light emitted from the solid-state light source into circularly or elliptically polarized light, a diffusion element that diffuses the light having exited from the birefringence element, and a polarization conversion element that separates the diffused light having exited from the diffusion element into first polarized light polarized in a first polarization direction and second polarized light polarized in a second polarization direction, converts the polarization direction of the first polarized light into the second polarization direction, and outputs the resultant first and second polarized light.
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