Patent ID: 7609229
Filing Date: 2009-10-27
Classification: G02B

Abstract:
1. An image displaying apparatus comprising: a light source; a movable diffusing face configured to optically diffuse incident light from the light source; an imaging optical system forming an image of the light source on the diffusing face; a scanning unit configured to two-dimensionally scan the image of the light source on the diffusing face, said scanning unit being disposed between the light source and the diffusing face; an eyepiece optical system guiding light from the diffusing face to an observer; and a mechanism moving at least one of the light source and at least a portion of the imaging optical system in interlocking relationship with the movement of the diffusing face along an optical axis of the eyepiece optical system, wherein the mechanism moves said at least one of the light source and at least a portion of the imaging optical system such that a conjugate relationship between the light source and the diffusing face with respect to the imaging optical system can be maintained.