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Optical sensor

  • US 7,245,363 B2
  • Filed: 02/12/2004
  • Issued: 07/17/2007
  • Est. Priority Date: 02/25/2003
  • Status: Expired due to Fees
First Claim
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1. An optical detection system comprising:

  • a spatial light modulator for modulating the phase of incoming light;

    a photodetector having a plurality of photosensitive areas to receive the light of which the phase has been modulated by the spatial light modulator;

    a photosensor selecting section for selecting at least one of the photosensitive areas and activating the selected photosensitive area effectively; and

    a modulation control section for providing a modulation pattern, associated with the photosensitive area that has been selected by the photosensor selecting section, for the spatial light modulator,wherein the photosensor selecting section cyclically switches the photosensitive areas to select by a time sequential technique, andwherein synchronously with this switching operation, the modulation control section provides a modulation pattern, which produces appropriate imaging ability in the photosensitive area selected, for the spatial light modulator.

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