Patent ID: 11914039
Assignee: RICOH COMPANY, LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 17:
18. A light projecting-receiving device comprising:
a projection system including a plurality of light-emitting regions configured to emit light to an area;
a light-receiving system including a plurality of light receiving regions configured to receive light reflected from a target object in the area and output a detection signal; and
circuitry configured to:
cause the projection system to emit first light;
receive a first detection signal output from the light-receiving system that has received light including the first light reflected from the target object,
determine light emission amount of each of the plurality of light-emitting regions based on the first detection signal;
cause the projection system to emit second light based on the light emission amount;
receive a second detection signal output from the light-receiving system that has received light including the second light reflected from the taruet object; and
output the second detection signal to a unit that measures a distance between the light receiving regions and the target object based on the second detection signal.