Color-split optical engine architecture for projection displays
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United States of America Patent
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Jan 1, 2008
Grant Date -
Jul 27, 2006
app pub date -
Jan 25, 2005
filing date -
Jan 25, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A projection display may use a color wheel having radially displaced regions of different colors. As a result, at any instance of time on a spatial light modulator in a projection display, three vertically displaced segments may be utilized, each of which is exposed to a different color at any instant of time. Over time, each of the vertically displaced segments may be exposed successively to each of the three primary colors. At any instance of time, the spatial light modulator has an upper region exposed to one color, an intermediate region exposed to another color, and a lower region exposed to still another color. As a result, relatively little light is lost, which may enable brighter reduced-panel display systems using lower power light sources.
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