Method and device for testing tilt angle of camera module

Abstract

The invention discloses an inclination angle test method and device of a camera module. The camera module comprises a base, and a lens and an image sensor arranged on the base; the inclination angle test method of the camera module comprises the following steps: detecting to acquire a first pixel coordinate that an optical axis of the lens is intersected with the image sensor; detecting to acquirea second pixel coordinate that an emission target of a collimation optical element is intersected with the image sensor; computing to obtain a pixel coordinate offset according to the first pixel coordinate and the second pixel coordinate; and determining the inclination angle of the lens and the image sensor relative to a mounting reference plane of the base according to the pixel coordinate offset. The invention provides an inclination angle test method and device of the camera module, and the inclination angle between the lens and the image sensor and the base can be effectively measured.

Description

technical field [0001] The invention relates to the technical field of virtual products, in particular to a method and device for testing the tilt angle of a camera module. Background technique [0002] Augmented Reality (Augmented Reality) is referred to as AR, and Virtual Reality (Virtual Reality) is referred to as VR. The current AR or VR products need to use a camera to achieve 6 degrees of freedom (DegreeOf Freedom) (6DOF) tracking and control, improving the user's experience in the virtual world. Real experience, such as head-mounted display products, which have high requirements for camera assembly accuracy. [0003] The camera generally includes a lens and an image sensor. The lens and the image sensor are installed on the base as a whole. When assembling, there is a certain inclination between the lens and the image sensor and the base. The inclination leads to a decrease in the assembly accuracy, which leads to the failure of camera calibration. And the actual fie...

AI Technical Summary

Problems solved by technology

[0004] Based on this, when the lens and image sensor are traditionally installed on the base as a whole, there is a certain inclination angle between the lens and image sensor and the base. Currently, there is no effective measurement method for the inclination angle between the lens and image sensor and the base. Problem, it is necessary to provide a method and device for testing the inclination angle of the camera module, which can detect the inclination angle between the lens and the image sensor and the base

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