Optical element driving device

Abstract

The invention discloses an optical element driving device. The optical element driving device comprises a shell, a carrier, an upper reed, a lower reed, a magnet group and a base. The carrier is usedfor installing a lens and is provided with a first coil and a second coil. The magnet group is arranged on the inner wall of the shell and is correspondingly matched with the first coil and the secondcoil on the carrier. The base comprises a bottom plate and a protruding part extending from the bottom plate to the top of the shell. The upper reed enables the upper surface of the carrier to be movably connected with the end face of the protruding part of the base, the lower reed enables the lower surface of the carrier to be movably connected with the bottom plate of the base, the base is further provided with a base embedded metal sheet, and the base embedded metal sheet enables the first coil and the second coil to be connected with an external circuit. The optical element driving devicehas the advantages of being simple in structure, low in cost, high in reliability and the like.

Description

technical field [0001] The invention relates to the technical field of optical imaging equipment, in particular to an optical element driving device. Background technique [0002] With the popularization of smart phones, the application range of mobile phone cameras is increasing. However, most of the sensors of mobile phone cameras are placed in the module outside the motor, and the side FPC uses a flexible circuit board, which causes problems such as warping. The detection is unstable. At the same time, the side FPC adopts a flexible circuit board. Uneven installation will affect the actual movement stroke. The vertical movement part of the carrier in the middle transmits the power of the bottom FPC to the upper reed and then to the coil on the carrier through the suspension wire. Internally, when the motor is impacted or after a long period of operation, the reliability of the suspension wire becomes low, and problems such as breakage are prone to occur, resulting in the ...

AI Technical Summary

Problems solved by technology

[0002] With the popularization of smart phones, the application range of mobile phone cameras is increasing. However, most of the sensors of mobile phone cameras are placed in the module outside the motor, and the side FPC uses a flexible circuit board, which causes problems such as warping. The detection is unstable. At the same time, the side FPC adopts a flexible circuit board. Uneven installation will affect the actual movement stroke. The vertical movement part of the carrier in the middle transmits the power of the bottom FPC to the upper reed and then to the coil on the carrier through the suspension wire. Internally, when the motor is impacted or after a long period of operation, the reliability of the suspension wire becomes lower, and problems such as breakage are prone to occur, resulting in the failure of the entire motor

In addition, there is usually a circuit board in the base, and the circuit board usually includes many layers. The external circuit and the focusing coil are connected through the circuit board and suspension wires. The structure is complex, the circuit is not simple enough, and the reliability is affected to a certain extent.

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