Color dependent aperture stop

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United States of America Patent

PATENT NO 9405180
APP PUB NO 20150070741A1
SERIAL NO

14389782

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Abstract

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Optical systems are provided that include illumination sources, micro-mirror array optical modulators, and an optical element. The micro-mirror array optical modulators can selectively modulate light beams, redirect light by diffraction and reflection, and provide an output modulated light beam that exhibits a diffraction handedness dependent on the spectral bandwidth of the light incident thereupon. The optical element has a color dependent aperture that defines portions of output modulated light beams that are transmitted and remaining portions that are blocked. An efficiency and contrast of each the output modulated light beams acquired by the optical element can be independently determined by a narrow spectral bandwidth of each of the light beams, the spectral characteristics of the color dependent aperture, and the diffraction handedness of the micro-mirror array optical modulators for the associated spectral bandwidth.

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Patent Owner(s)

Patent OwnerAddress
IMAX CORPORATION2525 SPEAKMAN DRIVE MISSISSAUGA L5K 1B1

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bowron, John Oakville, CA 11 37
Kurtz, Andrew F Macedon, US 154 7917
Read, Steven Charles Mississauga, CA 25 274

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