US 2026/0299251 A1Published application

Camera driving device and camera system

AssigneeAAC Microtech (Changzhou) Co., Ltd.

InventorsYun Tang, Wei Song

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Abstract

The embodiments of the present application provide a camera driving device and a camera system. The driving device includes a base, a magnet, a voice coil, and a lens barrel bracket movably mounted on the base. The magnet and the voice coil cooperate to drive the lens barrel bracket to move, the voice coil includes at least two spaced sub-voice coils, and the magnet includes multiple first sub-magnets and multiple second sub-magnets alternately arranged with the multiple first sub-magnets. In the camera driving device, at least two spaced sub-voice coils are set, and the first and the second sub-magnets are employed, which are alternately magnetized in radial and axial directions, ensuring a more uniform magnetic field distribution. Thereby, the motion accuracy and response speed of the lens barrel bracket are significantly improved, while providing greater driving force to support long-stroke driving and further reduce power consumption.

Claims10

Dependent claims

A camera driving device, comprising:

a base;
a magnet comprising a plurality of first sub-magnets and a plurality of second sub-magnets alternately arranged with the plurality of first sub-magnets;
a voice coil comprising at least two sub-voice coils spaced apart;
and
a lens barrel bracket movably mounted on the base;
wherein one of the magnet and the voice coil is fixed to the base, and the other of the magnet and the voice coil is fixed to the lens barrel bracket, and the magnet and the voice coil cooperates to drive the lens barrel bracket to move;
wherein the first sub-magnets are magnetized along a radial direction of the lens barrel bracket, and magnetization directions of two adjacent first sub-magnets are opposite;
the second sub-magnets are magnetized along an axial direction of the lens barrel bracket, and magnetization directions of two adjacent second sub-magnets are opposite;
and an end of each first sub-magnet facing the voice coil has the same polarity as an end of an adjacent second sub-magnet facing the first sub-magnet.

6 more elements

Dependencies are inferred from the claim text.