The HUD Inspector
THE CHALLENGE
The Windshield Is Part of the HUD
In a HUD system, the projected image interacts with the windshield before reaching the driver’s eyes.
Small variations in geometry or optical properties can affect the resulting image.
WHAT IS THE HUD INSPECTOR?
HUD Inspector measures the windshield geometry within the HUD area and retrieves key performance indicators (KPIs) such as astigmatism, image distortion, ghosting and binocular disparity.
It enables the simulation and evaluation of the driver’s visual experience before the windshield is installed on the vehicle, providing insight into the expected HUD image quality at an early stage of the manufacturing and validation process.
For the ARG market, the position of the HUD area on the windshield is defined using HUD Locator software, which also provides the driver’s eye-box position relative to the windshield. This information allows the HUD performance to be evaluated according to the intended installation and viewing conditions.
WHAT CAN BE EVALUATED?
Depending on the application, configuration and specifications:
Inner/outer shape map HUD area
Image Distortion
Inner / Outer Curvature Maps
Image Shift (Ghosting)
Wedge map
Astygmatisme
HUD image driver experience
Binocular Divergence
WHY USE THE HUD INSPECTOR?
Early Validation
Evaluate potential HUD image effects before the windshield is installed on the vehicle
Prediction
Simulate the expected HUD image quality and driver experience before the windshield is installed on the vehicle
Process Correlation
Correlate optical quality characteristics with back-shop curvature maps to identify production variations and provide feedback to the production line
HUD Localization
Use HUD Locator to identify the HUD area according to OEM specifications
Applications
From development to quality control, HUD Inspector helps different teams evaluate HUD optical performance.