Patent ID: 7508553
Filing Date: 2009-03-24
Classification: G02B

Abstract:
1. An image displaying apparatus comprising: a light source means; a scanning means for two-dimensional scanning a light beam optically modulated on the basis of image information and emitted from the light source means on a surface to be scanned by a mechanical resonance type rocking operation; and an optical system for observing therethrough an image formed on the surface to be scanned; wherein the image displaying apparatus comprises a scanning means controlling circuit adapted to automatically control at least one of a repetition cycle of the light beam in a particular direction across the surface to be scanned and the number of scanning lines of the light beam in the same direction based upon the recognition of a subject by an image pickup element, wherein the scanning means scans in a first direction on the surface to be scanned by the mechanical resonance type rocking operation, and the scanning means controlling circuit controls the scanning in a second direction differing from the first direction, and wherein, at a constant resonance frequency, the repetition cycle of the second direction and the number of scanning lines in the second direction are inversely related.