RGB illuminator with calibration via single detector servo
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United States of America Patent
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-
Oct 14, 2003
Grant Date -
N/A
app pub date -
May 17, 1999
filing date -
May 17, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A display system includes a light modulator divided into an array of individually controllable pixels and an input-driven illumination device. The illumination device is adapted to receive a variable input and is configured to direct light of variable intensity onto the modulator, depending on the input. The display system further includes a calibrating arrangement for establishing the input to the illumination device to produce a desired intensity level of light. The calibrating arrangement includes a light sensing mechanism, which senses the light from the illumination device while the illumination device is driven by an initial input. The calibration arrangement is configured to determine a comparison between the sensed light and a value representative of the desired-intensity level. The calibration arrangement further includes a control arrangement responsive to the comparison for varying the input so as to provide light of the desired intensity level.
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Cited Art Landscape
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