Inclination angle test method and device of camera module
A camera module and tilt angle technology, applied in the field of virtual products, can solve the problem of no effective measurement method for the lens, image sensor and base
Active Publication Date: 2019-02-22
GOERTEK OPTICAL TECH CO LTD
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[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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[0052] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0053] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relationship between various components under a certain posture (as shown in the accompanying drawings). The relative positional relationship, the movement situation, etc., if the specific posture changes, the directional indication also changes accordingly. ...
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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. At present, AR or VR products need to use cameras to achieve 6 degrees of freedom (Degree Of Freedom) referred to as 6DOF tracking and control, and improve the user experience in the virtual world. Real experiences, such as head-mounted display products, have high requirements on the assembly accuracy of cameras. [0003] A camera generally includes a lens and an image sensor. The lens and image sensor are installed on the base as a whole. During assembly, a certain tilt is likely to occur between the lens, the image sensor and the base. The tilt will reduce the assembly accuracy and cause the camera to fail to calibrate. And the actual field of view covera...
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CPCH04N17/002
Inventor 胡守岩
Owner GOERTEK OPTICAL TECH CO LTD