Optical module adjustment test method and device

Abstract

The invention provides an optical module adjustment test method and device. According to the device, a camera is arranged on an imaging light path of an optical module, so the visual effect of human eyes is simulated; the method comprises acquiring an image of a test legend displayed by a display device in a camera, judging whether the display device reaches a preset position or not according to adefinition index, an optical axis offset index and a distortion index of the acquired test legend image, and adjusting the position of the display device on line until the design requirement of a quality index of the test legend image is met. According to the device, the position of the display device can be adjusted in time according to the quality index of the test legend image shot by the camera, adverse effects of the structural tolerance, the assembly tolerance and the aberration of the optical module on the imaging quality of the optical module are compensated to a certain extent, and the product yield and the assembly efficiency are improved.

Description

technical field [0001] The invention relates to an optical module assembly testing technology, in particular to an optical module assembly testing method and device. Background technique [0002] Modern computer technology, display technology, sensor technology and other scientific technologies have promoted the development of AR (Augmented Reality, referred to as Augmented Reality) and VR (Virtual Reality, referred to as Virtual Reality) experience systems. VR scenes create a multi-dimensional information space. The virtual information environment enables users to have an immersive sense of immersion and has a perfect interaction ability with the environment; the AR scene applies virtual information to the real world, and the real environment and the virtual environment are superimposed on the same screen or space in real time simultaneously exist. [0003] The principle of AR and VR display devices is to pull the close-up images generated by the display to the distance th...

AI Technical Summary

Problems solved by technology

[0004] The main factors that usually lead to the adjustment deviation of optical modules are the structural tolerances of parts and the assembly tolerances of the assembly process, and these two errors are not easy to eliminate; in addition, for optical components such as lenses, it is inevitable Due to the existence of aberrations, the existing assembly and testing based on mechanical alignment cannot overcome the influence of aberration factors on the final imaging effect

Therefore, the existing optical component assembly and testing process and technology often lead to low product yield, low efficiency, poor product stability and consistency, and soaring costs. The current method is not suitable for mass production

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