Patent ID: 9134115
Filing Date: 2015-09-15
Classification: G01B,G01S,G02B

Abstract:
1. A vibrating mirror element comprising: a mirror portion capable of being oscillated about an axis; a resonant drive portion resonantly driven at a resonance frequency to resonantly drive the mirror portion by oscillating the mirror portion about the axis; a correction drive portion provided outside the resonant drive portion to be capable of oscillating the mirror portion about the axis, configured to non-resonantly drive the mirror portion by correcting oscillation driving of the mirror portion; and a drive control portion configured to control driving of the resonant drive portion to oscillate the mirror portion about the axis at the resonance frequency and to control driving of the correction drive portion to keep a turning angle velocity of the mirror portion substantially constant by oscillating the mirror portion about the axis at a non-resonance frequency in a direction opposite to a direction in which the resonant drive portion oscillates the mirror portion.