Main test items:
1. Resolution test: Test the clarity and detail of the image displayed on the HUD, and evaluate the resolution level of the HUD display. High resolution can provide clearer display effects.
2. Brightness and uniformity test: test the brightness and contrast level of the image displayed by the HUD, and evaluate the brightness performance of the HUD display. The higher the brightness, the better the display effect, and the uniformity of brightness is also an important consideration.
3. Virtual image contrast test: Conduct a contrast test on the virtual image generated by the HUD system to ensure that the image remains clear and legible under different lighting conditions.
4. Visual angle test: Test the clarity and color accuracy of the HUD display image under different viewing angles, and evaluate the visual angle range of the HUD display. A larger field of view can provide a broader perspective.
5. Projection test: test the projection effect of HUD display, and evaluate the degree of image focus and image distortion. This helps ensure that the HUD system can accurately and clearly project information in actual use.
6. Sunlight backflow test: Test the failure of the TFT screen after the HUD concentrates sunlight rays under the sun and backflows into the display. The sunlight backflow test is usually conducted outdoors on sunny days with sufficient sunlight, or with the help of solar simulator equipment. This test is crucial for evaluating the stability and durability of HUD under strong light exposure.
7. Visual fatigue test: test the impact of the time spent viewing the HUD display on user visual fatigue, and evaluate the comfort and safety of the HUD display. This helps ensure that the HUD system does not impose an excessive visual burden on the driver or operator during actual use.