A kind of testing method of head-up display

Abstract

The present application discloses a method for testing a head-up display, including: obtaining a first image of a luminance dot matrix in a virtual image plane collected by a first imaging device in a binocular imaging device; obtaining a brightness collected by a second imaging device in a binocular imaging device The second image of the dot matrix; according to the first image and the second image, determine the three-dimensional space coordinates of the central brightness point in the brightness dot matrix; according to the three-dimensional space coordinates, determine the distance between the virtual image plane and the first imaging device; wherein, the first The first imaging chip of the imaging device and the second imaging chip of the second imaging device are located on the same plane, and the luminance dot matrix is ​​a luminance dot matrix of odd rows and odd columns. The head-up display test method in this application avoids the method of measuring the distance of the virtual image surface by adjusting the focal length of the camera to determine the clear or blurred boundary of the picture in the prior art, and improves the accuracy of the distance test of the virtual image surface without adjustment. The depth of field of the camera shortens the test time.

Description

technical field [0001] The present application relates to the technical field of head-up display testing, in particular to a testing method of head-up display. Background technique [0002] The head-up display refers to a display device that projects the attitude indicator and main parameters of the main driving instrument onto the front of the driver's helmet or on the windshield. It enables the driver to see the main driving instruments and their important parameters at the same time while looking forward at the front view. Developed by military aircraft, it has gradually begun to be applied to cars to prevent drivers from looking down at the dashboard and improve driving safety. [0003] In order to ensure the quality of the head-up display, it is necessary to test the performance of the head-up display, such as brightness, uniformity, color, virtual image distance, field of view, distortion, ghosting, modulation transfer function, etc. At present, when measuring the vi...

AI Technical Summary

Problems solved by technology

However, this measurement method takes a long time to test and has low test efficiency, which cannot meet the requirements of rapid measurement on the production line. Moreover, the depth of field of the zoom lens itself will seriously affect the test accuracy of the virtual image distance

[0004] Therefore, how to solve the problem of long time-consuming and poor test accuracy in the virtual image distance test in the prior art is what those skilled in the art should focus on.

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