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US 10,591,697 B2Granted
Camera module actuator
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsJoo Yul Ko, Joo Hyoung Lee, Jong Woo Lee, Je Hyuk Ryu, Woo Young Choi, Soo Woong Lee, Byung Joo Hong
Life of this patent
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Abstract
A camera module actuator includes, a magnet, a coil, a driver, and a position estimating processor. The coil is disposed to face the magnet. The driver is configured to move the magnet by applying a driving signal to the coil. The position estimating processor is configured to estimate a position of the magnet from an oscillating signal. A frequency of the oscillating signal varies according to a movement of the magnet.
Claims16
A camera module actuator, comprising:
- a magnet;
- a coil disposed to face the magnet;
- a driver configured to move the magnet by applying a driving signal to the coil;
- and
- a position estimating processor configured to estimate a position of the magnet from an oscillating signal,
- wherein a frequency of the oscillating signal varies according to a movement of the magnet.
3 more elements
A camera module actuator, comprising:
- a magnet;
- a coil disposed to face the magnet;
- a driver configured to move the magnet by applying a driving signal to the coil;
- and
- a position estimating processor comprising an inductor and configured to estimate a position of the magnet by converting an inductance of the inductor changed based on a movement of the magnet into a frequency.
2 more elements
Dependencies are inferred from the claim text.