Optical element driving mechanism

1 . An optical element driving mechanism, comprising:

a movable portion used for connecting an optical element and comprising:

a movable portion main body;

a first guiding recess formed on the movable portion main body and comprising a first leaning surface and a second leaning surface, wherein a concave portion is formed in the first guiding recess and between the first leaning surface and the second leaning surface; and

a second guiding recess formed on the movable portion main body, wherein a convex portion is formed in the second guiding recess;

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

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

a guiding assembly used for guiding a moving direction of the movable portion relative to the fixed portion, wherein the guiding assembly comprises:

a first guiding element disposed on the fixed portion, disposed in the first guiding recess, and in direct contact with the first leaning surface and the second leaning surface; and

a second guiding element disposed on the fixed portion, disposed in the second guiding recess, and in contact with the convex portion.

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

wherein:

the fixed portion comprises a case and a bottom;

the case and the bottom are arranged along a main axis;

the main axis extends in a first direction;

the bottom comprises a first recess, a second recess, a first opening, and a second opening;

the first guiding element is at least partially disposed in the first recess;

the second guiding element is at least partially disposed in the second recess;

the first guiding element passes through the first opening; and

the second guiding element passes through the second opening.

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

the first guiding element is exposed from the bottom when viewed from the first direction;

the second guiding element is exposed from the bottom when viewed from the first direction;

the first guiding element is not exposed from the case when viewed from the first direction; and

the second guiding element is not exposed from the case when viewed from the first direction.

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

a second direction is opposite from the first direction;

the first guiding element is exposed from the bottom when viewed from the second direction; and

the second guiding element is exposed from the bottom when viewed from the second direction.

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

the first recess comprises a first recess disposing portion and a first recess gap;

the first recess gap is disposed in the first recess disposing portion;

the first guiding element is at least partially disposed in the first recess disposing portion; and

the first guiding element is not disposed in the first recess gap.

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

the second recess comprises a second recess disposing portion and a second recess gap;

the second recess gap is disposed in the second recess disposing portion;

the second guiding element is at least partially disposed in the second recess disposing portion; and

the second guiding element is not disposed in the second recess gap.

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

the first guiding element and the second guiding element are disposed on a virtual plane;

the virtual plane is parallel to the main axis; and

the first recess and the second recess are disposed on opposite sides of the virtual plane when viewed along the main axis.

8 . The optical element driving mechanism as claimed in claim 7 , wherein:

the first guiding recess and the second guiding recess are disposed on opposite sides of the virtual plane.

9 . The optical element driving mechanism as claimed in claim 8 , wherein:

the first guiding recess has a first segment and a second segment extending in different directions when viewed along the main axis;

the second guiding recess has a third segment and a fourth segment extending in different directions when viewed along the main axis;

the first guiding recess has a first width in a direction that the fourth segment extends;

the second guiding recess has a second width in the direction that the fourth segment extends; and

the first width and the second width are different.

10 . The optical element driving mechanism as claimed in claim 9 , wherein:

the concave portion has a first length along the main axis;

the convex portion has a second length along the main axis; and

the first length and the second length are different.

11 . The optical element driving mechanism as claimed in claim 10 , wherein:

the concave portion is not exposed from the first guiding recess when viewed along the main axis; and

the convex portion is exposed from the second guiding recess when viewed along the main axis.

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

the movable portion further comprises a first stopping portion, a second stopping portion, a third stopping portion, a fourth stopping portion, and a fifth stopping portion;

the first stopping portion extends from the movable portion main body to the case in the second direction;

the second stopping portion extends from the movable portion main body to the case in the second direction;

the third stopping portion extends from the movable portion main body to the case in the second direction;

the fourth stopping portion extends from the movable portion main body to the case in the second direction; and

the fifth stopping portion extends from the movable portion main body to the bottom in the first direction.

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

a first minimum distance is between the first stopping portion and the case in the first direction;

a second minimum distance is between the fifth stopping portion and the bottom in the first direction;

a sum of the first minimum distance and the second minimum distance is a movable range;

the movable range is greater than the second length; and

the movable range is less than 2 times of the second length.

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

the first stopping portion has a first thickness in the main axis;

the fifth stopping portion has a second thickness in the main axis;

the first thickness is greater than 0.5 mm;

the second thickness is greater than 0.5 mm;

the first thickness is less than the movable range; and

the second thickness is less than the movable range.

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

the second width is greater than the first width;

the first length is greater than the second length;

the first stopping portion, the second stopping portion, the third stopping portion, and the fourth stopping portion are arranged relative to a center in a counterclockwise manner when viewed along the main axis, and the center is a point passed through by the main axis;

the first stopping portion and the third stopping portion are rotational symmetrical relative to the center; and

the second stopping portion and the fourth stopping portion are rotational symmetrical relative to the center.

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

the first stopping portion and the second stopping portion have different shapes;

the first stopping portion and the fourth stopping portion have different shapes;

the third stopping portion and the second stopping portion have different shapes; and

the third stopping portion and the fourth stopping portion have different shapes.

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

a distance between the first stopping portion and the first guiding element is less than a distance between the second stopping portion and the first guiding element when viewed along the main axis;

the distance between the first stopping portion and the first guiding element is less than a distance between the fourth stopping portion and the first guiding element when viewed along the main axis;

a distance between the third stopping portion and the second guiding element is less than a distance between the second stopping portion and the second guiding element when viewed along the main axis; and

the distance between the third stopping portion and the second guiding element is less than a distance between the fourth stopping portion and the second guiding element when viewed along the main axis.

18 . The optical element driving mechanism as claimed in claim 17 , further comprising a temperature sensor and a position sensor;

wherein:

the temperature sensor is disposed on the fixed portion;

the temperature sensor is adjacent to the first guiding element or the second guiding element to detect temperature of the first guiding element or the second guiding element; and

the position sensor is disposed in a second driving coil and corresponds to a second magnetic element.

19 . The optical element driving mechanism as claimed in claim 1 , further comprising a first guiding element and a second guiding element disposed on the movable portion;

wherein:

the first guiding element is movably connected to the fixed portion; and

the second guiding element is movably connected to the fixed portion.