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Abstract

A liquid crystal-based light valve system with automatic color correction. The invention includes a light input, a liquid crystal-based spatial light modulator, a light output, a light intensity sensor, and a color controller. The light intensity sensor is located along an optical path between the light input and the light output and is configured to detect the intensity of light illuminating the spatial light modulator. The color controller is electrically connected to the light intensity sensor. The color controller may be configured to modulate the light received at the light input. In addition, the spatial light modulator may include a pixellated electrode and control circuitry electrically connected to the pixellated electrode and the color controller. The invention may alternatively include a first, second, and third liquid crystal-based spatial light modulator, a color separator, and a first, second, and third light intensity sensor. The first, second, and third light intensity sensors are configured to detect the intensity of light illuminating the first, second, and third spatial light modulator, respectively. The color controller is electrically connected to each of the first, second, and third light intensity sensors.

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First Claim