Optical member driving mechanism

An optical member driving mechanism, comprising:

• a first movable portion, configured to connect an optical member, wherein the optical member is configured to adjust an emission direction of light from an incident direction to an outgoing direction;
• a fixed portion, comprising a bottom and a back, wherein the back is parallel to the incident direction and is perpendicular to the bottom, and the first movable portion moves relative to the fixed portion;
• a first driving assembly, configured to drive the first movable portion to move relative to the fixed portion;
• a second movable portion;
• a second driving assembly, configured to drive the second movable portion to move relative to the first movable portion and the fixed portion, wherein at least a portion of the first driving assembly is disposed on the first movable portion, and at least a portion of the second driving assembly is disposed on the second movable portion;
• a position sensor, configured to detect a movement of the second movable portion, wherein the position sensor is disposed on the back;
• a first guiding member, disposed on the fixed portion;
• a second guiding member, disposed on the first movable portion and movably connected to the first guiding member, wherein the second driving assembly comprises a coil disposed on the back, and the first guiding member is disposed on the bottom;
• and
• an elastic member connecting an upper surface of the first movable portion to the second movable portion, wherein the fixed portion comprises a housing having a top wall, the upper surface faces the top wall, and the top wall is located at a side corresponding to the incident direction.