Automatic tuning method and system for optical image stabilization camera modules

摘要

An automatic tuning method for an OIS camera module, comprising the steps of: S0, providing an automatic tuning platform (1), and enabling an OIS camera module (2) to directly face an objective plane (103); S1, a control module (101) indicating to an OIS motor controller (201) to control an OIS motor (203), thereby changing the stroke of a lens; S2, changing control parameters of each driver or each pair of drivers in sequence, and recording the control parameters, compensation angles and a relative angle each time the control parameters of one or one pair of drivers are changed; S3, according to the control parameters, the compensation angles and the relative angle, the control module (101) calculating an OIS gain in each stroke; and S4, transmitting the OIS gain in each stroke to the OIS motor controller (201).

主权项

1. An automatic tuning method for OIS camera modules, wherein the method is used to tune an OIS camera module, the OIS camera module including an OIS motor controller and an OIS motor including a lens, and the OIS motor further includes a plurality of drivers; the method comprising:
S0: providing an automatic tuning platform, and providing an objective plane and a control module on the automatic tuning platform, wherein an image is preset on the objective plane; mounting the OIS camera module on the automatic tuning platform, and connecting the OIS motor controller with the control module; making an optical axis of the OIS camera module be perpendicular to the objective plane, and using an intersection of the objective plane and the optical axis as an origin to establish a space coordinate system, wherein the space coordinate system includes an X-axis and a Y-axis which are defined in the objective plane and are perpendicular to each other, and a Z-axis which is perpendicular to the objective plane; S1: using the control module to instruct the OIS motor controller to control the OIS motor, and thereby changing a stroke of the lens, so that the stroke of the lens is a distance value between the lens and the image; S2: using the control module to change control parameters of each driver or each pair of drivers in sequence, and thereby moving the lens; after every time the control parameters of one driver or a pair of drivers are changed, using the control module to record compensation angles, a relative angle, and the control parameters, wherein the relative angle is an included angle between a connecting line from the lens to the image and the Z-axis; S3: calculating an OIS gain in the stroke according to the control parameters, the compensation angles, and the relative angle; and S4: transmitting the OIS gain to the OIS motor controller.