Patent ID: 7497574

Claim:
A retinal image scanning device, comprising: at least one light source that emits a light beam; an intensity modulating system that modulates the intensity of the light beam emitted by said at least one light source in accordance with a video signal; an optical system that directs the light beam to a pupil of an observer; a scanning system that scans the light beam incident on the pupil of the observer, and effects horizontal and vertical scanning of the light beam in accordance with a vertical synchronizing signal and a horizontal synchronizing signal so that a two-dimensional image frame is formed on a retina of the observer, and switching the image frame with time, to display images on the retina of the observer; a wavefront curvature modulating system that modulates a wavefront curvature of the light beam synchronously with a synchronizing signal that makes at least one of the scanning in a horizontal direction and the scanning in a vertical direction start.