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

Claim 1:
2. The range finding device according to claim 1, wherein the circuitry configured to control light-receiving sensitivity of each of the light-receiving regions of the light-receiver, and
wherein when the amount of light received at one or more particular light receiving regions of the light-receiver, measured by the region light intensity measurement structure at the preliminary light emission stage, is lower than a given threshold value, the circuitry increases the light-receiving sensitivity of the one or more particular light receiving regions of the light-receiver, and the circuitry measures the distance to the target object using the light receiving regions of the light-receiver after increasing the light-receiving sensitivity of the one or more particular light receiving regions of the light-receiver.