Optical element driving mechanism

1 . An optical element driving mechanism, comprising:

a movable portion, connected to an optical element;

a fixed portion, wherein the movable portion is movable relative to the fixed portion;

a driving assembly, driving the movable portion to move relative to the fixed portion; and

a circuit assembly, comprising:

a first circuit portion with a plate structure, disposed on the fixed portion;

a second circuit portion, connected to the first circuit portion;

a third circuit portion, connected to the first circuit portion;

a connecting portion with a bent structure, wherein the second circuit portion is connected to the first circuit portion via the connecting portion;

a first adhesive element, disposed on the first circuit portion, with which the first circuit portion is adhered to the fixed portion; and

a second adhesive element, disposed on the second circuit portion, with which the second circuit portion is adhered to the fixed portion;

wherein:

the first adhesive element is not in direct contact with the second adhesive element; and

at least a portion of the connecting element is not in direct contact with the first adhesive element or the second adhesive element;

wherein the fixed portion comprises:

a bottom, wherein the first circuit portion is disposed on a surface of the bottom; and

a case, fixedly connected to the bottom;

wherein the surface has an exposed portion that is exposed from the first circuit portion when viewed in a direction that is parallel to a main axis;

wherein:

the second adhesive element is in direct contact with a first sidewall of the bottom;

the connecting portion is not in contact with the bottom; and

the first sidewall has a dodging portion, corresponding to the connecting portion.

2 . The optical element driving mechanism as claimed in claim 1 , wherein:

the case is fixedly connected to the bottom via a third adhesive element;

the third adhesive element is in direct contact with the case and the bottom;

the third adhesive element is in direct contact with the circuit assembly; and

the surface is perpendicular to the main axis.

3 . The optical element driving mechanism as claimed in claim 2 , wherein:

the third adhesive element is in direct contact with the surface; and

the third adhesive element is in direct contact with the first circuit portion.

4 . The optical element driving mechanism as claimed in claim 1 , further comprising:

a first electronic element, sensing the movement of the movable portion, and disposed on the circuit assembly; and

a second electronic element, sensing an environmental parameter, and disposed on the circuit assembly;

wherein the shortest distance between the center of the first electronic element and the movable portion is shorter than the shortest distance between the center of the second electronic element and the movable portion.

5 . The optical element driving mechanism as claimed in claim 4 , wherein:

the first electronic element is disposed on a first circuit surface of the second circuit portion;

the second electronic element is disposed on a second circuit surface of the third circuit portion;

the first circuit surface faces the movable portion; and

the second circuit surface faces the fixed portion.

6 . The optical element driving mechanism as claimed in claim 5 , wherein:

the first circuit surface and the second circuit surface face in the same direction; and

there is a spacing between the center of the first electronic element and the center of the second electronic element in the direction of the main axis.

7 . The optical element driving mechanism as claimed in claim 1 , further comprising an internal assembly, wherein the movable portion is movable relative to the fixed portion via the internal assembly, wherein the internal assembly comprises:

a first counterpart element, fixedly connected to the fixed portion;

a first clamping element, fixedly connected to the movable portion, corresponding to the first counterpart element; and

a first internal element, located between the first counterpart element and the first clamping element;

wherein:

the first internal element is movable relative to the first counterpart element, the first clamping element, or both; and

the first clamping element, the first internal element, and the first counterpart element are arranged in sequence along an arrangement direction.

8 . The optical element driving mechanism as claimed in claim 7 , wherein the internal assembly further comprises:

a second counterpart element, fixedly connected to the fixed portion;

a second clamping element, fixedly connected to the movable portion, corresponding to the second counterpart element; and

a second internal element, located between the second counterpart element and the second clamping element;

wherein:

the center of the first internal element and the center of the second internal element are connected by a connecting line, and the connecting line passes through an opening of the movable portion when viewed in a direction that is parallel to a main axis.

9 . The optical element driving mechanism as claimed in claim 8 , wherein the optical element at least partially overlaps the opening when viewed in the direction that is parallel to the main axis.

10 . The optical element driving mechanism as claimed in claim 8 , further comprising a force-exerting assembly, stabilizing the movement of the movable portion, wherein the force-exerting assembly comprises:

a first magnetic element, disposed on the fixed portion; and

a first magnetic-conductive element, disposed on the movable portion, corresponding to the first magnetic element and generating a first force along a first direction;

wherein the first clamping element is drawn to abut against the first counterpart element by the first force.

11 . The optical element driving mechanism as claimed in claim 10 , wherein the force-exerting assembly further comprises:

a second magnetic element, disposed on the fixed portion; and

a second magnetic-conductive element, disposed on the movable portion, corresponding to the second magnetic element and generating a second force along a second direction;

wherein:

the volume of the first magnetic element is the same as the volume of the second magnetic element;

the volume of the first magnetic-conductive element is different from the volume of the second magnetic-conductive element; and

the strength of the first force is different from the strength of the second force.

12 . The optical element driving mechanism as claimed in claim 11 , wherein:

the volume of the first magnetic-conductive element is greater than the volume of the second magnetic-conductive element; and

the strength of the first force is greater than the strength of the second force.

13 . The optical element driving mechanism as claimed in claim 11 , wherein:

both the first direction and the second direction point away from the connecting line that connects the center of the first internal element and the center of the second internal element; and

the angle between the first direction and the arrangement direction is different from the angle between the second direction and the arrangement direction.

14 . The optical element driving mechanism as claimed in claim 13 , wherein the angle between the first direction and the arrangement direction is smaller than the angle between the second direction and the arrangement direction.

15 . The optical element driving mechanism as claimed in claim 14 , wherein:

the angle between the first direction and the arrangement direction is smaller than 90 degrees; and

the angle between the second direction and the arrangement direction is greater than 90 degrees.

16 . The optical element driving mechanism as claimed in claim 15 , wherein:

a resultant force exerted on the movable portion is formed by combining the first force and the second force;

the resultant force is not parallel to the connecting line that connects the center of the first internal element and the center of the second internal element; and

the first clamping element is drawn to abut against the first counterpart element by the resultant force.