Patent ID: 7476846
Filing Date: 2009-01-13
Classification: G01S

Abstract:
1. An MEMS mirror device comprising: a light projecting part that generates laser light; a first light receiving part that converts received light into a signal; an optical system that uses an MEMS mirror and serves to form said laser light generated by said light projecting part into a beam, to project said beam in a specified search direction, to receive reflected light from said search direction and to lead said received light to said first light receiving part, said MEMS mirror having: a second light receiving part including said at least one photodiode formed on said MEMS mirror and having a photosensitive range for reflected light with higher brightness than the photosensitive range of said first light receiving part; and a synthesizing part that outputs a synthesized signal formed by synthesizing outputs from said first light receiving part and said second light receiving part.