Automatic focusing device and camera module

The utility model relates to an automatic focusing device and a camera module, and the automatic focusing device comprises a reflector which is disposed at the rear side of a lens assembly and is configured to change the path of light passing through the lens assembly so as to enable the light to be oriented towards an image sensor; a bracket to which the reflector is mounted, the bracket configured to linearly move in an optical axis direction; a housing configured to accommodate the carriage; and a driving unit configured to move the carriage such that a distance between the reflector and the lens assembly simultaneously changes with a distance between the reflector and the image sensor. 本实用新型涉及自动聚焦装置和照相机模块，该自动聚焦装置包括：反射器，所述反射器设置到透镜组件的后侧并且被配置为改变穿过所述透镜组件的光的路径，使得光朝向图像传感器定向；托架，所述反射器被安装到所述托架，所述托架被配置为在光轴方向上线性地移动；壳体，所述壳体被配置为容纳所述托架；以及驱动单元，所述驱动单元被配置为使所述托架移动，使得所述反射器和所述透镜组件之间的距离与所述反射器和所述图像传感器之间的距离同时改变。