Importance

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Abstract

In a projection display, a dichroic beam splitter separates white light into a first color set that includes first and second color components, and a second color set that includes a third color component, such that the first color set traverses an optical path different from that of the second color set. A first light polarization selector receives the first color set from the dichroic beam splitter, and a first polarized beam splitter prism receives the first color set from the first light polarization selector. The first polarized beam splitter prism directs the color components in the first color set to first and second light modulators respectively for light modulation. The first and second light modulators reflect the light-modulated color components of the first color set back to the first polarized beam splitter prism for reception by a second light polarization selector and a first projection lens. A second polarized beam splitter prism receives the second color set from the dichroic beam splitter, and directs the second color set to a third light modulator for light modulation. The third light modulator reflects the light-modulated second color set back to the second polarized beam splitter prism for reception by a second projection lens.

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First Claim