Light source apparatus, illuminator, and projector
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United States of America Patent
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Nov 12, 2019
Grant Date -
Mar 15, 2018
app pub date -
Mar 3, 2016
filing date -
Mar 27, 2015
priority date (Note) -
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Abstract
A light source apparatus, an illuminator, and a projector that output a reduced light beam flux in a direction roughly the same as the direction of the optical axis of an incident light beam flux. The light source apparatus includes a light source unit that outputs a light beam flux and a reduction system that includes a plurality of optical elements and reduces the cross section of the light beam flux. The optical elements each have first and second surfaces and first and second reflection surfaces and allow a corresponding light beam of the light beam flux to pass through the first surface, to be incident on the first reflection surface, to be sequentially reflected off the first reflection surface and the second reflection surface, and then to exit through the second surface to shift the optical path of the light beam in a first direction.
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