Optical polarisation device for a stereoscopic image projector

Optical polarisation device for a stereoscopic image projector

  • CN 105,324,702 A
  • Filed: 05/27/2014
  • Published: 02/10/2016
  • Est. Priority Date: 05/29/2013
  • Status: Active Application
First Claim
Patent Images

1. the optical polarizer device for stereoscopic image projector (3), it is characterized in that, described device comprises:

  • -polarizer optical element (304), the incident beam (22) that stereoscopic image projector can be sent resolves into;

    Present the transmitted light beam (306) of the first optical polarization state, andPresent the first folded light beam (308) and second folded light beam (310) of the second optical polarization state being different from described first optical polarization state;

    This polarizer optical element (304) comprises two the beam splitter-polarizer plate (322,324) be bonded together, and the junction surface (326) between described plate is placed on the track (328) of described incident beam (22);

    -the first optical reflector (312) and the second optical reflector (314), be configured to the track revising described first folded light beam and described second folded light beam respectively, make described folded light beam and described transmitted light beam project to form identical stereo-picture;

    -the first light polarization modulator (316), the second light polarization modulator (318) and the 3rd light polarization modulator (320), can optionally switch the optical polarization of described transmitted light beam, described first folded light beam and described second folded light beam by responsive control signal respectively between described first optical polarization state and described second optical polarization state;

    -for the control circuit (31) of described light polarization modulator, be programmed in given time transfer control signal, described control signal to control in described first folded light beam and described second folded light beam the switching of the polarization of each or described transmitted light beam, makes described folded light beam and described transmitted light beam all present identical optical polarization state.

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