Patent ID: 11953604
Assignee: DENSO CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 4:
5. A method implemented by a controller for controlling a light source to measure a distance to an object in a scanning zone, the method comprising:
receiving a detection signal indicative of a rotational angle of a mirror, which rotates back and forth between a first position and a second position, at a plurality of predetermined angle intervals during each rotation cycle between the first position and the second position of the mirror;
determining whether the detection signal matches any one of a plurality of predetermined target rotation angles of the mirror;
outputting a control signal to the light source to emit a light beam upon determining that the detection signal matches any one of the plurality of predetermined target rotation angles;
receiving a return signal generated upon receiving a return light reflected by the object in the scanning zone; and
calculating the distance to the object based on a timing at which the control signal was output and a timing at which the return signal was received.