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Optically controlled device, method of controlling the optically controlled device, spatial light modulator, and projector

  • US 20050083565A1
  • Filed: 08/16/2004
  • Published: 04/21/2005
  • Est. Priority Date: 08/18/2003
  • Status: Active Grant
First Claim
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1. A method of controlling an optically controlled device that includes a transparent electrode that is optically transparent, a conductivity variable portion that is provided on the transparent electrode, where electrical conductivity changes according to an amount of control light passing through the transparent electrode, a driving electrode provided on the conductivity variable portion, a movable unit that is movable to a predetermined position, and a support portion that movably supports the movable unit, comprising:

  • inputting the control light of a constant intensity into the transparent electrode;

    applying a voltage modulated according to an input signal between the transparent electrode and the movable unit; and

    moving the movable unit to the predetermined position by generating a force corresponding to the voltage between the driving electrode and the movable unit based on a change of electrical conductivity of the conductivity variable portion caused by the inputting of the control light into the transparent electrode.

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