Abstract: This application relates to the field of electronic device technologies, and provides a camera module and an electronic device, to reduce a volume of the camera module while improving image stabilization performance of the camera module. The camera module includes an optical lens, a module circuit board, a photosensitive chip, and an actuator. The module circuit board is disposed on a light exit side of the optical lens and includes a fastening part, a moving part, and an elastic part. The moving part is elastically connected to the fastening part through the elastic part. The photosensitive chip is disposed on a side that is of the moving part and that faces the optical lens. The actuator includes a fastened clamping jaw, a movable clamping jaw, and a wire. The actuator drive the moving part to move relative to the fastening part when the length of the wire changes.

Abstract: This application discloses an optical lens, a camera module, and an electronic device. The optical lens includes a first lens group and a second lens group that are arranged from an object side to an image side, where the first lens group has positive focal power, the second lens group has negative focal power, and the first lens group and/or the second lens group are/is focusing lens groups/a focusing lens group. In a focusing process in which the optical lens switches from a long shot to a close-up shot, a spacing between the first lens group and the second lens group increases, and an effective focal length of the optical lens decreases. The optical lens satisfies a relational expression: F2/EFL>?5, where F2 is a focal length of the second lens group, and EFL is the effective focal length of the optical lens.

Abstract: This application provides a driving apparatus and an electronic device. The driving apparatus may be applied to the electronic device. The driving apparatus includes a variable aperture. A piezoelectric ceramic of the variable aperture is configured to deform under signal control, to drive a rotation ring of the variable aperture to rotate relative to a base of the variable aperture. Each blade of the variable aperture rotates relative to the rotation ring and slides relative to a first protrusion part of the base, and a hole diameter of an aperture hole of the variable aperture changes. A change range of the aperture hole of the variable aperture in this application is not easily affected by an external magnetic force of the variable aperture.

Abstract: An ultrasonic piezoelectric motor includes a frame, a carrier, and a Z-direction piezoelectric driver. The carrier is disposed on an inner side of the frame and moveable in a Z direction relative to the frame, the carrier is configured to receive a camera lens, and the Z direction is parallel to an optical axis of the camera lens. A Z-direction piezoelectric driver is located between the frame and the carrier. The ultrasonic piezoelectric motor periodically abuts against the carrier using the Z-direction piezoelectric driver and drives the carrier to move in the Z direction to focus a camera module.