Patent ID: 11914219
Assignee: ROHM CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A lens control apparatus comprising:
a lens;
an actuator structured to position the lens;
a Hall element having a first end grounded and structured to generate a position detection signal that indicates a position of the lens;
a current source coupled to a second end of the Hall element and structured to supply a constant current having predetermined current amount;
a temperature detection unit coupled to the second end of the Hall element and receiving a voltage at the second end of the Hall element, and structured to detect a temperature based on a voltage at the second end of the Hall element in a state in which the constant current is flowing through the Hall element; and
a control unit structured to control the actuator such that the position detection signal approaches a position instruction signal that indicates a target position of the lens.