Double-liquid-crystal light-valve single-projector type stereo projection system and projector

Double-liquid-crystal light-valve single-projector type stereo projection system and projector

CN
  • CN 202,631,942 U
  • Filed: 01/06/2012
  • Issued: 12/26/2012
  • Est. Priority Date: 01/06/2012
  • Status: Active Grant
First Claim
Patent Images

1. the stereo projection system of the brilliant light valve list of biliquid projector formula is characterized in that said stereo projection system comprises along optical path direction successively:

  • Be used for alternately playing left-eye image and eye image, support that frame rate is the projector of the video playback of 100HZ or higher frame rate;

    Said projector is digital micro-mirror formula projector, liquid crystal over silicon formula projector, liquid crystal display formula projector or laser projection formula projector;

    Be used for the projection ray of said projector is converted into the linear polarizer of linearly polarized light;

    The first electrically controlled birefringence mode liquid crystal light valve;

    Be used for through the odd-numbered frame inferior and even frame inferior output light of synchronous modulation said linear polarizer;

    To be converted into from first linearly polarized light that linear polarizer sees through and the second vertical linearly polarized light of the said first linearly polarized light polarization direction, perhaps first linearly polarized light not produced any effect;

    The second electrically controlled birefringence mode liquid crystal light valve;

    Be used for through the odd-numbered frame inferior and even frame inferior output light of synchronous modulation said linear polarizer;

    To transform into through first linearly polarized light of the first electrically controlled birefringence mode liquid crystal light valve and the second vertical linearly polarized light of the said first linearly polarized light polarization direction, perhaps will be and the first vertical linearly polarized light of the said second linearly polarized light polarization direction through second linearly polarized light revolution of the first electrically controlled birefringence mode liquid crystal light valve;

    Polarization state converter;

    The bright dipping side that it is positioned at the said second electrically controlled birefringence mode liquid crystal light valve is used for converting first linearly polarized light and second linearly polarized light of said second electrically controlled birefringence mode liquid crystal light valve output into left circularly polarized light and right-circularly polarized light respectively;

    Projection screen is used for the projection ray'"'"'s catoptric imaging to said polarization state converter output, and reflected light keeps from the circular polarization polarized state of light of said polarization state converter output;

    Be used to separate the rotatory polarization glasses of the right and left eyes image of said projection screen reflection;

    Said stereo projection system also comprises a synchronizing circuit;

    Be used for extracting the frame rate synchronizing signal of right and left eyes image, and produce the synchronized signal that is used to drive the first electrically controlled birefringence mode liquid crystal light valve and the second electrically controlled birefringence mode liquid crystal light valve according to extracting the result from said projector.

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