An image display device for displaying an image by a light beam modulated according to an image signal includes: a light source unit that supplies the light beam; a scanning unit for performing scanning with the light beam from the light source unit; a screen that transmits the light beam from the scanning...http://www.google.com/patents/US7494227?utm_source=gb-gplus-sharePatent US7494227 - Image display device and method of controlling image display device
