Optical element driving module

1. An optical element driving module, comprising:

a fixed portion;

a movable portion, configured to support an optical element, wherein the movable portion is movable relative to the fixed portion;

a driving assembly, configured to drive movement of the movable portion relative to the fixed portion; and

a positioning sensor, configured to detect the movement of the movable portion relative to the fixed portion, wherein the optical element driving module defines a polygonal shape when viewed along an optical axis of the optical element, and at least a part of the positioning sensor is positioned at a corner of the optical element driving module.

2. The optical element driving module as claimed in claim 1 , further comprising a substrate disposed on a side of the movable portion, wherein the substrate forms a recess receiving the positioning sensor.

3. The optical element driving module as claimed in claim 2 , wherein the recess does not penetrate the substrate, and a depth of the recess is greater than a height of the positioning sensor.

4. The optical element driving module as claimed in claim 2 , wherein the positioning sensor defines a longitudinal axis that intersects the substrate.

5. The optical element driving module as claimed in claim 1 , wherein the positioning sensor is angled with respect to a side of the polygonal shape when viewed along the optical axis of the optical element.

6. The optical element driving module as claimed in claim 1 , wherein the positioning sensor is neither perpendicular nor parallel to a side of the polygonal shape.

7. The optical element driving module as claimed in claim 6 , further comprising a substrate and a plurality of circuits disposed on the substrate, wherein the circuits are electrically connected to the positioning sensor and arranged along the side of the polygonal shape.

8. The optical element driving module as claimed in claim 1 , further comprising a substrate disposed on a side of the movable portion and a circuit electrically connected to the positioning sensor, wherein the circuit comprises an inner connecting portion embedded in the substrate and an outer connecting portion protruding from the substrate, wherein the inner and outer connecting portions respectively have a plate-shaped structure and are parallel to each other.

9. The optical element driving module as claimed in claim 1 , further comprising a substrate disposed on a side of the movable portion and a circuit disposed on the substrate, wherein the substrate forms a recess receiving the positioning sensor, and the circuit comprises:

a first portion, electrically connected to the positioning sensor and having a first surface facing the positioning sensor; and

a second portion, electrically connected to the positioning sensor via the first portion and having a second surface not parallel to the first surface.

10. The optical element driving module as claimed in claim 9 , wherein the circuit further comprises a third portion electrically connected to the positioning sensor via the first and second portions, and the third portion has a third surface not parallel to the second surface.

11. The optical element driving module as claimed in claim 10 , wherein the first and third surfaces are located at different planes.

12. The optical element driving module as claimed in claim 11 , further comprising a resilient member that electrically connects the driving assembly to the circuit.

13. The optical element driving module as claimed in claim 12 , further comprising a housing connected to the fixed portion, wherein the housing has an upper housing member and at least a lateral housing member extending from the upper housing member along the optical axis of the optical element, and the lateral housing member and the circuit at least partially overlap when viewed along the optical axis.

14. The optical element driving module as claimed in claim 13 , wherein the first, second, and third portions respectively have a plate-shaped structure, the first surface is not parallel to a thickness direction of the first portion, the second surface is not parallel to a thickness direction of the second portion, and the third surface is not parallel to a thickness direction of the third portion.

15. The optical element driving module as claimed in claim 13 , wherein the circuit is positioned at a substantial center of the lateral housing member.

16. The optical element driving module as claimed in claim 9 , wherein the first portion is patterned on the substrate by Molded Interconnect Device techniques.

17. The optical element driving module as claimed in claim 9 , wherein the substrate and the housing are formed integrally.

18. The optical element driving module as claimed in claim 9 , further comprising a housing and a ground circuit electrically connected to the housing, wherein the housing is connected to the fixed portion, and the ground circuit is positioned on the substrate, wherein a connecting point of the ground circuit and the housing is located within the optical element driving module and are not exposed to outside.

19. The optical element driving module as claimed in claim 9 , wherein the substrate comprises plastic.

20. The optical element driving module as claimed in claim 1 , wherein the optical element driving module has a substantially rectangular shape when viewed along the optical axis of the optical element.