Vehicle Headlamp Projection for Accurate Cornering Guide Lines
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Solution Overview
Problem
Existing vehicle headlamp systems fail to accurately depict the actual driving profile of a vehicle during cornering, leading to inadequate visualization for the driver.
Innovation Solution
A headlamp system that calculates a curved guide line based on the vehicle's center of gravity, using sensors to determine a tangent arc or circle, projecting parallel guide lines that correspond to the vehicle's side edges, thereby replicating the actual driving profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the curved guide line is calculated based on the headlamp position, then the guide line can be projected onto the roadway, but the guide line does not accurately represent the actual driving profile of the vehicle
Solution Approach 1:
The patent creates a virtual copy of the vehicle's actual driving path by calculating a curved guide line that mirrors the vehicle's trajectory. This virtual copy is then projected onto the roadway to provide the driver with accurate visual feedback about the vehicle's driving profile, resolving the contradiction between accuracy and complexity by using mathematical modeling rather than physical sensors.
Solution Approach 2:
The patent transforms the calculation parameters from headlamp-based coordinates to vehicle center of gravity-based coordinates. By changing the reference frame and using vehicle dynamics parameters (steering angle, speed, wheelbase) to calculate the curved guide line, the system achieves accurate driving profile visualization while maintaining manageable computational complexity.
2Measurement precision
If a tangent arc is calculated through the center of gravity, then the guide line accurately represents the driving profile, but the calculation becomes more complex
Solution Approach 1:
The patent replaces complex physical measurement systems with mathematical calculations. Instead of using additional sensors to physically track the vehicle's path, the system uses mathematical models that calculate the tangent arc through the center of gravity based on readily available vehicle dynamics data, achieving high accuracy without increasing physical system complexity.
Solution Approach 2:
The patent introduces a mathematical intermediary (the calculated tangent arc) that bridges the gap between the vehicle's actual motion and the visual representation on the roadway. This intermediary element allows the system to accurately represent the driving profile by serving as a computational mediator between vehicle dynamics and visual output.
Data Source
AI summary
The present invention relates to a light module for a lighting device of a vehicle, in particular for a headlight of a vehicle. The light module comprises a light-generating unit for emitting light, an optical unit for deforming the light emitted by the light-generating unit, and a heat sink for cooling the light-generating unit, the heat sink having a front side facing the optical unit and a rear side facing away from the optical unit, the light-generating unit being situated between the optical unit and the heat sink, the optical unit comprising at least one referencing means, and the heat sink having a recess that accommodates the referencing means on the front side facing the optical unit, and the recess being closed or substantially closed at the rear.