Method and apparatus for precisely compensating skew rays and residual retardation
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United States of America Patent
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Issued Date -
Dec 7, 2006
app pub date -
Jun 1, 2005
filing date -
Jun 1, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A greater than 1/4 lambda waveplate is inserted in a light channel between a microdisplay and optics directing the light channel. The waveplate is rotated such that a main component of the retardation of the waveplate is along a skew ray axis of light from the optics, and a minor component of the retardation of the waveplate is perpendicular to a residual retardation axis of the microdisplay. The main component has a magnitude of 1/4 lambda, and the minor component has a magnitude equivalent to a magnitude of residual retardation of the microdisplay.
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