Optical device, projector, manufacturing method, and manufacturing support apparatus
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United States of America Patent
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Mar 15, 2016
Grant Date -
May 15, 2014
app pub date -
Jun 27, 2012
filing date -
Jul 25, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A light source unit (110) emits linearly polarized laser light of a given wavelength. A wave plate (121) transmits the laser light emitted from the light source unit (110) and has a phase delay axis of which the direction is adjusted to about 0 degrees with respect to the polarization direction (101) of the laser light. A liquid crystal cell (123) transmits laser light that has passed through the wave plate (121) and by a switchable rotation amount, rotates the polarization direction (101) of the laser light transmitted through the liquid crystal cell (123). A wave plate (125) transmits laser light that has passed through the liquid crystal cell (123); and further has a phase delay axis of which the direction is adjusted to about 0 degrees with respect to the polarization direction (101) of the laser light.
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