Projection type video display apparatus

Projection type video display apparatus

  • CN 102,033,402 B
  • Filed: 06/01/2010
  • Issued: 09/02/2015
  • Est. Priority Date: 09/29/2009
  • Status: Active Grant
First Claim
Patent Images

1. a projection type video display apparatus, projects being presented at the image that image display surface shows and showing, possessing:

  • To the image display element shown with each corresponding image of primaries;

    To the lamp optical system that this image display element throws light on;

    Light from described image display element is carried out to the look combining unit of look synthesis;

    Light from described look combining unit is carried out to the polarisation transformation component of polarisation conversion;

    WithBy the light from described polarisation transformation component supply with the projection optics system of the angle of inclination of regulation to tilted direction outgoing,The feature of described projection type video display apparatus is, also comprises;

    By the plane mirror that the light from described projection optics system reflects to the direction projected, wherein,Described projection optics system comprises multiple lens, and for being configured in closest to the lens on the position of described plane mirror, the image vertical direction effective coverage that light beam passes through is configured in the position of optical axis common by maximum lens in the optical axis not comprising described multiple lensBeing configured in the shape closest to the described lens on the position of described plane mirror, is the oblong-shaped almost equal with the aspect ratio of image display surface effective coverage or the trapezoidal shape consistent with the region that image strip passes through.

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