Fault tolerant projective display having redundant light modulat

Details Fault tolerant projective display having redundant light modulat Fault tolerant projective display having redundant light modulat

1997-06-26

1998-09-29

Sikes, William L.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

349158, 359224, 359292, G02B 2608, G02B 2600

Patent

active

058153039

ABSTRACT:
A projective display system includes a light source, a display surface, and a two dimensional light modulator array in an optical path between the light source and the display surface. The two dimensional light modulator array has a plurality of light modulators arranged in rows to modulate light from the light source, with at least one row being susceptible to failure. To compensate for any failed rows, a redundant light modulator array is provided, with modulated light output of the redundant light modulator array being directed by an optical element positioned to selectively substitute for at least one failed row of light modulators.

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Journal of Vacuum Science Technology, B, vol. 12, No. 6(Jeffrey B. Sampsell, "Digital Micromirror Device and Its Application to Projection Displays", Nov./Dec. 1994, pp. 3242-3246).

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