Patent ID: 8011789
Filing Date: 2011-09-06
Classification: G03B,H04N

Abstract:
1. A rear projection display comprising: a projector configured to project light from a light source as an optical image; a cabinet configured to enclose said projector; a projection screen on which said optical image is projected; two or more optical sensors provided in a region where said optical image is projected from said projector other than an image display region; a projecting part configured to project a test image having detection points to be detected by said two or more optical sensors other than said image display region on said projection screen from said projector; a position calculating part configured to calculate the position of said test image projected from said projecting part on the basis of output signals from said two or more optical sensors; and a distortion correcting part configured to correct for a distortion of said test image on the basis of the result of the calculation made by said position calculating part.