Ambient Light Reflection Analysis using Dimensional Modelling Tools

The primary motivation is to improve driver safety and visual comfort. This is driven by the need to address the negative impact of ambient light reflecting off Head-Up Displays (HUDs), which can impair visibility through the windshield. There is a need for tools and methods to address this issue proactively during the vehicle design phase. Ambient light reflecting off internal components, specifically the Head-Up Display (HUD), creates unwanted reflections on the windshield. These reflections can obscure the driver's field of view, potentially compromising safety and reducing visual comfort. The extent of this obscuration is influenced by geometrical factors such as the angle of the HUD and the curvature of the windshield, which needs to be analyzed and managed. The study employs a tool-based modeling methodology to trace the pathways of ambient light from its source, reflecting off the HUD, and onto the windshield using a dimensional modeling tool. It focuses on geometrical factors, specifically the HUD angle and windshield curvature, for measurements and analysis. The methodology aims to evaluate the extent of disruption or obscuration within the driver's field of view caused by these reflections in millions of vehicles. Based on these evaluations, the study intends to provide specific recommendations for optimal geometry and tolerance settings, thereby facilitating the early resolution of potential issues during the design phase. By employing a dimensional modeling approach to analyze ambient light reflections from the HUD, it is possible to effectively predict and understand potential windshield view obscuration. This analysis, focused on geometrical factors, enables early-stage design interventions through geometry and tolerance recommendations. Implementing these recommendations ultimately leads to improved driver safety and enhanced visual comfort by mitigating disruptive reflections.