摘要 |
An apparatus for scanning a light beam, the apparatus comprises a mirror configured to reflect an incident light beam, a motor configured to rotate the mirror so change a direction along which the light beam reflected by the mirror travels, a detector configured to detect tilt of a detected region of the mirror with respect to a rotation angle of the mirror, and a processor configured to calculate an amount of tilt of the mirror with respect a direction along a rotation axis of the motor, based on the rotation angle of the mirror and the tilt of the detected region detected by the detector.
|