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Projection-type display apparatus and control method for projection-type display apparatus as well as control program for projection-type display apparatus

  • US 8,777,425 B2
  • Filed: 09/07/2010
  • Issued: 07/15/2014
  • Est. Priority Date: 02/04/2004
  • Status: Active Grant
First Claim
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1. A projection-type display apparatus, comprising:

  • a solid-state light source array that emits light;

    a mirror device that controls an emitting intensity of the light incident from the solid-state light source array to thereby subject the incident light to temporal modulation, the mirror device including micro-mirrors arranged in a matrix shape;

    a correction parameter storing unit that stores correction parameters, which control an effective reflection time of the micro-mirrors in a plurality of color lights emitted from the solid-state light source array;

    a mirror device driver that drives the micro-mirrors based on a modulation control signal, the modulation control signal being based on a video signal and the correction parameters;

    a power supply control unit that controls the turning on and off of the solid-state light source array based on the video signal and the correction parameters;

    a projecting device that projects the modulated light; and

    a measuring device that measures an intensity of emitted ineffective light from the mirror device, the measuring device being disposed on a light path between the solid-state light source array and the projecting device,whereinthe solid-state light source array is configured to be turned on at a time after the micro-mirrors are turned on, and the modulation control signal is turned off at a predetermined time after the solid-state light source array is turned on, and the solid-state light source array is thereby turned off, andthe projecting device receives light other than the ineffective light.

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