A HUD stray light automatic test system and test method

Abstract

The invention discloses a HUD stray light automatic test system, which belongs to the technical field of HUD automatic test systems, and comprises sequentially arranged light source components, HUD stand components and camera components, and also includes computer components. The light source is installed on the light source multi-axis mechanical arm , the HUD is installed on the HUD stand, the camera is installed on the multi-axis mechanical arm of the camera, and the computer is electrically connected to the light source assembly, the HUD, and the camera assembly. The invention also discloses an automatic HUD stray light testing method, which can automatically identify which structural component causes stray light when stray light occurs, based on the imaging distance calculated from the position of the light source and the focal length of the camera, the eye point position and angle of the camera Stray light, and can accurately reproduce and predict problems according to the sun's altitude angle, azimuth angle, and vehicle driving direction. The camera can automatically scan and take pictures in the eye box for testing, and the test will not be missed, which greatly saves testing time and workload. And the accuracy is high, and it does not depend on the experience of the inspector.

Description

technical field [0001] The invention belongs to the technical field of HUD automatic test systems, and in particular relates to a HUD stray light automatic test system and a test method. Background technique [0002] The car windshield-type head-up display (HeadUpDisplay) can present information on the front windshield glass of the car, avoiding the need for the driver to look down to see the instrument information, and ensuring driving safety. Head-up displays were first used on military aircraft. With the development of technology, head-up displays are more and more widely used in the automotive field. When a typical windshield-type HUD (Head-Up Display) is used in different environments, the sunlight reflected on the surface of the dustproof plate is focused and the sunlight is reflected back and forth between the LCD, the small reflector, and the large reflector before exiting to the human eye The resulting stray light causes bright spots in the imaging area of ​​the H...

AI Technical Summary

Problems solved by technology

[0005] 1. This stray light automatic test system is relatively bulky and cannot automatically control the height and angle of the light source. The reproducibility of the position of the light source is relatively poor, and it cannot be accurately positioned according to the altitude angle and azimuth angle of the sun and the driving direction of the car. In the prior art, The height angle of the light source requires people to move, which is inefficient and time-consuming;

[0006] 2. This stray light automatic test system cannot automatically identify which part of the stray light is caused by the structural part. The identification of stray light mainly depends on the inspector, who needs to judge which part of the stray light is caused by the structural part. Experience and technical requirements are relatively high;

[0007] 3. This stray light automatic test system cannot fully scan the eye box, and it is easy to miss test items

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