E Earle Thompson, Thomas W DeMond: Spatial light modulator projection system with random polarity light. Texas Instruments Incorporated, Julie L Reed, James C Kesterson, Richard L Donaldson, May 25, 1993: US05214420 (287 worldwide citation)

A visual display system having a spatial light modulator with individually controllable elements. Each element capable of producing an individual light beam directed toward a display surface. A source of random polarity light is utilized to direct light onto the modulator.

Matthew Glen Hine, Gene Alan Frantz: Imaging input/output with shared spatial modulator. TEXAS INSTRUMENTS INCORPORATED, Michael A Davis Jr, Charles A Brill, Frank D Cimino, August 1, 2017: US09720520

An image input/output apparatus and method includes a light source in optical communication with a spatial radiation modulator for projecting an output image and an image sensor for capturing an input image along a shared input/output path. In a described embodiment, the display of an output image a ...