Patent ID: 7866831
Filing Date: 2011-01-11
Classification: G02B,G03B

Abstract:
1. An image projector, comprising: a coherent light source; a collimator lens that collimates coherent light from said coherent light source to form collimated coherent light; a projector optical system that projects the collimated coherent light; a reflector element that reflects the collimated coherent light and is capable of vibrating in parallel with a direction normal to a reflector surface of said reflector element; and a reflector element driver unit that drives said reflector element in vibrating motion; wherein said reflector element driver unit drives said reflector element in reciprocatory vibrating motion in a normal direction of a principal surface of said reflector element; and wherein a vibration range of said reflector element is more than or equal to square root of 2 times of a maximum period of concavity and convexity profile which is formed on a surface of said first diffuser element and used for light diffusion.