Patent ID: 7538314
Filing Date: 2009-05-26
Classification: H04N

Abstract:
1. An apparatus for displaying an image, comprising: a projecting optical system for producing a first image based on a modulated light beam; a reflecting section having first and second reflecting surfaces and for scanning, on the first reflecting surface, said first image produced by said projecting optical system in a direction perpendicular to a longitudinal direction of said first image to produce a second image; an irradiating section for irradiating the second reflecting surface of the reflecting section with a detection light beam which is different from said modulated light beam; a detecting section for detecting the position of said detection light beam reflected by said reflecting section to detect the position of said first image reflected by said reflecting section in said second image; and a control section for controlling operation of said reflecting section based on the position of said first image in said second image as detected by said detecting section, wherein said reflecting section has a first reflecting surface for reflecting said first image and a second reflecting surface for reflecting said second image, said irradiating section applies said detection light beam to said second reflecting surface of said reflecting section, and said detecting section detects the position of said detection light beam reflected by said second reflecting surface of said reflecting section to detect the position of said first image in said second image.