Tri-axis closed-loop anti-shake structure
View Patent ↗Provided is a lens driving device which includes: a lens holder including a coil; a frame for receiving the lens holder; a driving circuit board disposed below the frame; a plurality of first conductive elastic bodies disposed in a manner to keep the lens holder moving in a Z-axis direction; and a plurality of second conductive elastic bodies disposed in a manner to keep the frame moving in a direction perpendicular to the Z-axis direction. The lens driving device further comprises a plurality of electrical contact-oriented Z-axis position sensor. The Z-axis position sensor senses the motion of the lens holder in the Z-axis direction. An electronic circuit between a portion of the plurality of electrical contacts and the coil of the lens holder comprises a Molded Interconnect Device and a portion of the first conductive elastic bodies. The Molded Interconnect Device is disposed on the frame.
1. A lens driving device, comprising:
a lens holder including a coil and a light axis, wherein the direction of the light axis is parallel to a Z-axis direction;
a frame for receiving the lens holder;
a driving circuit board disposed below the frame;
a plurality of first conductive elastic bodies disposed in a manner to keep the lens holder moving in the Z-axis direction; and
a plurality of second conductive elastic bodies disposed in a manner to keep the frame moving in a direction perpendicular to the Z-axis direction,
characterized in that: the lens driving device further comprises a Z-axis position sensor with a plurality of electrical contacts, wherein the Z-axis position sensor senses a motion of the lens holder in the Z-axis direction, wherein an electronic circuit between a portion of the plurality of electrical contacts and the driving circuit board comprises a Molded Interconnect Device, the first conductive elastic bodies, and the second conductive elastic bodies, with the Molded Interconnect Device disposed on a first surface and a second surface of the lens holder wherein the first surface is not parallel with the second surface.
2. The lens driving device of claim 1 , wherein another portion of electrical contacts are electrically connected to the coil of the lens holder.
3. The lens driving device of claim 1 , wherein the first conductive elastic bodies are each an upper plate spring.
4. The lens driving device of claim 1 , wherein the second conductive elastic bodies are each a sling.
5. The lens driving device of claim 1 , wherein the Z-axis position sensor is disposed on the lens holder, and the electrical contacts are electrically connected directly to the Molded Interconnect Device.
6. The lens driving device of claim 1 , wherein the Z-axis position sensor is disposed on a flexible circuit board, with the electrical contacts electrically connected to the Molded Interconnect Device through the flexible circuit board.
7. The lens driving device of claim 6 , wherein the flexible circuit board is disposed on the lens holder.
8. The lens driving device of claim 1 , wherein the plurality of second conductive elastic bodies are electrically connected to the Molded Interconnect Device, characterized in that:
the lens driving device electrically drives the Z-axis position sensor with the plurality of second conductive elastic bodies and the Molded Interconnect Device; and
the lens driving device obtains signals sensed by the Z-axis position sensor with the plurality of second conductive elastic bodies and the Molded Interconnect Device.
9. The lens driving device of claim 1 , wherein the Molded Interconnect Device comprises a plurality of conducting wires electrically connected to the first conductive elastic bodies, respectively.
10. The lens driving device of claim 1 , wherein the Molded Interconnect Device comprises conducting wires with a 3D framework.