Patent ID: 11901700
Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 13:
14. A driving device comprising:
setting circuitry configured to set at least one of a bias current of a light-emitting element or a target current for setting output light from the light-emitting element to desired intensity on a basis of a result of detection of an offset light amount when the light-emitting element does not emit light, the detection being performed by a light-receiving element that receives a portion of the output light; and
an output controller configured to control an output of a driving current of the light-emitting element on a basis of at least one of the set bias current or the set target current, wherein
the output controller includes a current mirror circuit having a variable current mirror ratio, and controls an output of a driving current in which an output current of the current mirror circuit and the bias current are added up, and
the current mirror ratio is reduced after passage of a predetermined delay time from the start of the output of the output current.