US20250338018
2025-10-30
Electricity
H04N23/687
The patent application outlines an actuator assembly designed for a five-axis sensor shift camera module. It comprises a transversal actuator for moving the image sensor orthogonally to the optical axis and an axial actuator for parallel movement. The assembly also includes a carrier that retains parts of both actuators, facilitating motion in all required directions while maintaining stability during certain movements.
With the rise of compact, high-resolution cameras in mobile devices, there is a need for advanced optical image stabilization (OIS) and autofocus (AF) mechanisms. Traditional systems adjust either the lens or the sensor along specific axes to counteract motion. The proposed actuator assembly integrates these functionalities within a compact design, using voice coil motors and other components to enhance performance.
The assembly integrates both axial and transversal actuators to enable five-axis motion: AF, OIS, and tilts about the x and y axes. The carrier holds parts of both actuators, allowing for coordinated movement. The axial actuator moves the image sensor parallel to the optical axis, while the transversal actuator handles orthogonal movements. This integration supports precise control over sensor positioning.
The carrier is crucial for maintaining balance between movement types. It is connected to the AF carrier via damping structures like suspension springs, allowing it to move with the sensor during transversal shifts while remaining static during axial movements. The holder attaches fixedly to a stationary camera structure, ensuring stability during transversal movements.
The assembly can include multiple axial and transversal actuators arranged alternately around the image sensor. This configuration minimizes magnetic interference and allows independent activation of actuators for specific movements. Such an arrangement enhances precision in sensor adjustments, supporting complex motion patterns without cross-talk between components.