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Projector and control method therefor to suppress flickering

  • US 8,534,847 B2
  • Filed: 02/11/2008
  • Issued: 09/17/2013
  • Est. Priority Date: 03/09/2007
  • Status: Expired due to Fees
First Claim
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1. A projector for projecting an image to a screen, comprising:

  • a lamp configured to emit light;

    an elliptic reflecting mirror configured to reflect and condense the light from said lamp to optoelectronics to project said image to said screen;

    a sensor configured to detect an amount of the light reflected and condensed by said elliptic reflecting mirror to said optoelectronics;

    a lamp power supply configured to supply power to said lamp to drive said lamp; and

    a control circuit configured to successively increase the power supplied from said lamp power supply to said lamp until after a variation value of the amount of the reflected light detected by said sensor becomes equal to or lower than a predetermined threshold value.

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