Patent ID: 9071173
Filing Date: 2015-06-30
Classification: G02B,G03G,H02P,H04N

Abstract:
1. A motor control device comprising: a motor configured to rotate a mirror for deflecting light emitted from a light source; a first detector element configured to detect the light deflected by the mirror and to output a first detection signal; a second detector element configured to output a second detection signal by the motor rotating; and a rotation direction determination unit configured to determine a rotation direction of the motor in a state of the motor rotating at a speed lower than a target speed, wherein the rotation direction determination unit determines that the motor is undergoing a forward rotation when a time difference between an output timing of the first detection signal and an output timing of the second detection signal falls within a predetermined range, and determines that the motor is undergoing a reverse rotation when the time difference does not fall within the predetermined range.