| 摘要 |
PROBLEM TO BE SOLVED: To control an emission angle of a laser beam with high accuracy in a distance measurement apparatus, an emission timing controller and a program.SOLUTION: The emission timing controller comprises: a storage part for storing the relation between a mirror angle of a rotary-reciprocating mirror for deflecting a laser beam and an emission angle of the laser beam from a scan-angle-enlarging lens for enlarging a scan angle of the laser beam deflected by the mirror using mirror angles represented by lapsed times from a reference position of the mirror; a detector for detecting the reference position based on an output signal of a sensor which detects a mirror angle; a measurement part for measuring a time based on the reference position detected by the detector; and a controller for driving a laser source to emit a laser beam when the measured time by the measurement part coincides with the lapsed time stored in the storage part and for correcting driving timing based on a mirror angular amplitude. |
