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IMAGE PROJECTION DEVICE

  • US 20110194035A1
  • Filed: 02/10/2011
  • Published: 08/11/2011
  • Est. Priority Date: 02/10/2010
  • Status: Abandoned Application
First Claim
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1. An image projection device, comprising:

  • an optical illumination system that includes a light source;

    a light modulation device that receives an image signal, and modulates a light beam emitted from the optical illumination system in accordance with the image signal; and

    an optical projection system that magnifies and projects modulated light received from the light modulation device onto a screen for displaying an image,wherein the optical projection system comprises;

    a projection lens that is arranged with an optical axis thereof shifted with respect to the light modulation device in order to project the light beam obliquely onto the screen, and magnifies and projects the modulated light received from the light modulation device;

    a flat mirror that reflects the light beam output from the projection lens, has a rotation center on a side thereof on which a light beam having a long path from the projection lens to the screen is reflected, rotates around the rotation center and adjusts an angle of the light beam; and

    a curved mirror that reflects and magnifies the light beam received from the flat mirror, has a rotation center on a side thereof on which a light beam having a short path from the projection lens to the screen is reflected, rotates around the rotation center and adjusts the angle of the light beam.

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