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US 9,804,477 B2Granted
Actuator driving apparatus and camera module including the same
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsJe Hyun Bang, Shin Young Cheong, Byung Gi An, Hoon Heo
Life of this patent
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Abstract
An actuator driving apparatus includes an inductor disposed on a housing to face a magnetic body attached to a lens carrier, a detector configured to apply a reference signal to the inductor and detect an inductor current flowing through the inductor, a calculator configured to determine a position of the lens carrier based on the inductor current, and a driver configured to drive an actuator based on the position of the lens carrier and a position control signal.
Claims19
An actuator driving apparatus comprising:
- an inductor disposed on a housing to face a magnetic body attached to a lens carrier;
- a detector configured to apply a reference signal to the inductor and detect an inductor current flowing through the inductor;
- a calculator configured to determine a position of the lens carrier based on the inductor current;
- and
- a driver configured to drive an actuator based on the position of the lens carrier and a position control signal.
2 more elements
A camera module comprising:
- a lens carrier disposed in a housing;
- a magnetic body attached to the lens carrier;
- an actuator configured to move the lens carrier within the housing;
- and
- an actuator driving apparatus configured to drive the actuator,
- wherein the actuator driving apparatus comprises a inductor disposed on the housing, a detector configured to apply a reference signal to the inductor to detect an inductor current flowing through the inductor, a calculator configured to determine a position of the lens carrier based on the inductor current, and a driver configured to drive the actuator based on the position of the lens carrier and a position control signal.
3 more elements
A camera module comprising:
- a magnetic body configured to move with a lens carrier;
- an actuator configured to move the lens carrier;
- an inductor configured to interact with the magnetic body;
- and
- a circuit configured to drive the actuator based on an inductance generated in the inductor by the magnetic body,
- wherein the circuit is configured to determine the inductance of the inductor by applying a reference signal to the inductor and detecting an inductor current flowing through the inductor.
3 more elements
Dependencies are inferred from the claim text.