Angled illumination for a single order light modulator based projection system
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United States of America Patent
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Mar 16, 2004
Issued Date -
N/A
app pub date -
Aug 15, 2001
filing date -
Apr 10, 2001
priority date (Note) -
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Abstract
A display apparatus projects a two dimensional image onto a display screen and includes illumination optics, a light modulator, separating optics and scanning optics. The light modulator is optically coupled to the illumination optics such that in operation the illumination optics illuminate the light modulator with an off-axis illumination and further such that the light modulator directs light onto an optic axis for a bright pixel, thereby forming on-axis light, and away from the optic axis for a dark pixel, thereby forming off-axis light. The separating optics are coupled to the light modulator and separate the off-axis and on-axis light where the on-axis light produces a real and virtual image that is displayed by the projection and scanning optics.
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