Patent ID: 8269692

Claim:
An image display apparatus which displays an image onto a retina of a user, said image display apparatus comprising: a left-eye image output unit configured to output a left-eye image constituting an original image in whole or in part; a left-eye deflection unit configured to deflect, toward a left eye of the user, the left-eye image outputted by said left-eye image output unit; a right-eye image output unit configured to output a right-eye image constituting the original image in whole or in part; a right-eye deflection unit configured to deflect, toward a right eye of the user, the right-eye image outputted by said right-eye image output unit; and a control unit configured to control said left-eye image output unit and said right-eye image output unit such that the left-eye image and the right-eye image are outputted, the left-eye image and right-eye image being different from each other in at least one of pixel position, image shape, image size, image resolution, and display frame rate so that the user can recognize the original image from the left-eye image and the right-eye image by an image fusion effect, wherein said left-eye image output unit includes: a left-eye light source which emits a beam for drawing each of pixels constituting the left-eye image; and a left-eye scan unit configured to scan said left-eye deflection unit using the beam emitted from said left-eye light source, and said right-eye image output unit includes: a right-eye light source which emits a beam for drawing each of pixels constituting the right-eye image; and a right-eye scan unit configured to scan said right-eye deflection unit using the beam emitted from said right-eye light source and wherein said control unit includes: a scan field setting unit configured to cause one of said left-eye scan unit and said right-eye scan unit to scan the beam at a first scan angle for scanning only part of the original image, and to cause the other to scan the beam at a second scan angle larger than the first scan angle and equal to or below a scan angle for scanning the original image in whole; and an image quality setting unit configured to control said left-eye image output unit and said right-eye image output unit so as to cause said left-eye image output unit and said right-eye image output unit to output the left-eye image and the right-eye image different from each other in image quality, respectively, according to the first and the second scan angles set by said scan field setting unit.