Patent ID: 8665179
Filing Date: 2014-03-04
Classification: G02B,H04N

Abstract:
1. A projection apparatus comprising: a plurality of different types of light-emitting elements configured to emit light of different wavelength ranges; a light source drive unit configured to control a light emission state of each of the plurality of different types of light-emitting elements in accordance with i) a color image formation period in which a color image is formed by using light emitted from the plurality of different types of light-emitting elements, ii) a synchronization period in which at least two different types of light-emitting elements of the plurality of different types of light-emitting elements are simultaneously driven to output a synchronization signal synchronized with projection timing of a left-eye image or a synchronization signal synchronized with projection timing of a right-eye image, and iii) off-state periods between which the synchronization period is interposed, and in which all the plurality of different types of light-emitting elements are in the off-state; an input unit configured to input an image signal for the left eye and an image signal for the right eye; and a projection unit configured to switch between a) an optical image corresponding to an image signal for the left eye and b) an optical image corresponding to an image signal for the right eye, which are input by the input unit, to thereby project one of the optical images by using light emitted from the plurality of different types of light-emitting elements driven by the light source drive unit.