US 2017/0285363 A1Published application

Lens driving device

AssigneeTDK Taiwan Corp.

InventorsChao-Chang HU, Shu-Shan CHEN, Cheng-Kai YU, Che-Wei CHANG, Chih-Wei WENG

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Abstract

A lens driving device includes a base and a frame movably connected to the base. A holder carries a lens and is movably disposed in the frame. A focus driving unit includes at least one first coil disposed on the holder and at least one first magnetic element disposed on the frame and corresponding to the first coil. Electromagnetic induction occurs between the first coil and the first magnetic element, so that the holder is moved along an optical axis of the lens with respect to the base. A tilt driving unit includes several first electromagnetic driving parts disposed on opposite sides of the holder and several second electromagnetic driving parts disposed on the frame and corresponding to the first electromagnetic driving parts. Electromagnetic induction occurs between the first and second electromagnetic driving parts, so that the holder is tilted with respect to the base.

Claims20

Dependent claims

A lens driving device, comprising:

a base;
a frame movably connected to the base;
a holder used to carry a lens and movably disposed in the frame;
a focus driving unit including at least one first coil and at least one first magnetic element, the first coil being disposed on the holder, the first magnetic element being disposed on the frame and corresponding to the first coil, and electromagnetic induction occurs between the first coil and the first magnetic element, so that the holder is moved along an optical axis of the lens with respect to the base;
and
a tilt driving unit including a plurality of first electromagnetic driving parts and a plurality of second electromagnetic driving parts, the first electromagnetic driving parts being disposed on opposite sides of the holder, the second electromagnetic driving parts being disposed on the frame and corresponding to the first electromagnetic driving parts, and electromagnetic induction occurs between the first and second electromagnetic driving parts, so that the holder is tilted with respect to the base.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/465,117Filed 21 Mar 2017
Priority: TW 10610485115 Feb 2017
Published: 5 Oct 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

G02B 27/646
Imaging systems using optical elements for stabilisation of the lateral and angular position of the image: compensating for small deviations, e.g.…
G02B 7/09
With mechanism for focusing or varying magnification: adapted for automatic focusing or varying magnification
H02K 41/0356
Lorentz force motors, e.g. voice coil motors: moving along a straight path
G02B
Optical elements, systems or apparatus

Family

Application62/314,545Us provisional application · filed 29 Mar 2016
US 10,101,595 B2Related patent
US 2017/0285363 A1This patent

From the US filing history. Foreign family members aren’t listed.

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