Color-split optical engine architecture for projection displays

Details Color-split optical engine architecture for projection displays Color-split optical engine architecture for projection displays

2008-01-01

2008-01-01

Sever, Andrew T (Department: 2851)

Optics: image projectors

Color filter

C353S031000, C359S891000

Reexamination Certificate

active

07314282

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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