IMAGE PROJECTION APPARATUS
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United States of America Patent
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Issued Date -
Nov 5, 2015
app pub date -
Apr 28, 2015
filing date -
May 2, 2014
priority date (Note) -
Abandoned
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Abstract
A lead-free image projection apparatus capable of further reducing generation of black floating and color unevenness includes a reflective display element configured to modulate incident illumination light and to emit the light thus modulated, a projection optical system configured to project the light thus modulated, and a polarizing beam splitter configured to guide the illumination light to the reflective display element and to guide a predetermined polarization component of the light thus modulated to the projection optical system. The beam splitter includes a lead-free glass member and satisfies predetermined conditional expressions.
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