High luminance projection displays and associated methods
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United States of America Patent
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Apr 25, 2023
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N/A
app pub date -
Oct 22, 2019
filing date -
Apr 19, 2011
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Abstract
Projection displays include a highlight projector and a main projector. Highlights projected by the highlight projector boost luminance in highlight areas of a base image projected by the main projector. Various highlight projectors are based on steerable beams, holographic projectors, and spatial light modulators. A Fourier transform component and a mask positioned on the Fourier plane thereof are used to attenuate or eliminate selected spatial frequencies, e.g., to increase peak luminance without raising the black level of the projected image.
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