一种摄像模组位姿精确测量的方法

A method of accurate pose measurement for camera module

位姿偏差是影响摄像模组质量的重要因素。受限于成本和工艺流程,国内中低端摄像模组的生产过程通常只做清晰度检测,没有进行摄像模组位姿测量,基于此,文中提出一种摄像模组位姿精确测量的方法。首先,通过一个制具将位姿测量转化为相机标定问题;再基于自主设计的圆形阵列和MTF组合标靶实现图像清晰度和位姿的一站式测量。所提方法在不提高制造成本和不改变工艺流程的前提下,实现了对摄像模组位姿精确测量;最后,设计了一个三维旋转台对所提方法进行验证。实验结果表明,所提方法平均误差值小于0.05°,检测时间小于100 ms,完全满足相关产业的检测要求。

The pose deviation is the key factor affecting the quality of the camera module.For the limitation of cost and process flow,in general,there is only definition detection but no pose measurement of camera modules in the production process of low-and middle-end camera modules in China.A method of accurate pose measurement for camera module is proposed on the basis of the above.Firstly,the pose measurement is converted into the camera calibration by a tool,and then one-stop measurement of the image clarity and pose are realized based on the autonomously-designed circular array and MTF combined target.The accurate pose measurement of the camera module is realized without any increase of the manufacturing cost and change of the process flow.A 3D rotating table is designed to verify the method.The experimental results show that the average error value of the method is less than 0.05°and the detection duration is less than 100 ms,which fully meets the testing requirements of relevant industries.