Automotive Headlamp Dynamic Aiming for Speed-Adaptive Illumination
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Solution Overview
Problem
Current motor vehicle headlamps fail to provide adequate illumination and often result in excessive glare, leading to poor ratings in safety standards, as they do not adapt effectively to varying vehicle speeds and lighting requirements.
Innovation Solution
An automotive lighting apparatus with a lighting component that dynamically adjusts its aiming based on vehicle speed, transitioning between different illumination profiles to meet specific cutoff criteria and improve visibility while minimizing glare, using a combination of static and dynamic aiming mechanisms and optical systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If headlamps use fixed illumination patterns, then manufacturing and alignment are simplified, but illumination adequacy and glare control deteriorate across varying driving conditions
Solution Approach 1:
The patent implements dynamic aiming mechanisms that automatically adjust the headlamp illumination pattern based on vehicle speed. At lower speeds, the headlamps provide wider, shorter-range illumination suitable for city driving. At higher speeds, the system dynamically shifts to narrower, longer-range beams for highway conditions. This dynamic adaptation resolves the contradiction by enabling multiple illumination profiles without requiring manual intervention or overly complex sensor systems.
Solution Approach 2:
The system changes key illumination parameters including beam direction angles, cutoff line positions, and intensity distribution based on detected vehicle speed. By dynamically adjusting these parameters, the headlamps adapt to different driving conditions while maintaining compliance with regulatory standards for each speed range, thus improving versatility without excessive complexity.
2Illumination intensity
If headlamps provide maximum illumination intensity, then nighttime visibility improves, but glare to other road users increases
Solution Approach 1:
The patent applies different illumination characteristics to different spatial regions. The headlamp system creates distinct beam patterns with varying intensity distributions - brighter in the forward direction for visibility, with controlled cutoff angles to prevent glare to oncoming traffic. The dynamic aiming mechanism further refines this by directing maximum intensity only where needed based on vehicle speed and road conditions.
Solution Approach 2:
The system dynamically adjusts illumination intensity and beam direction based on vehicle speed. At lower speeds, the headlamps provide wider illumination with moderate intensity suitable for urban environments with more road users. At higher speeds, the system concentrates intensity in a narrower forward sector where glare risk is reduced, maximizing visibility while minimizing harmful effects to other road users.
3Length of moving object
If headlamps are aimed for long-range illumination, then highway visibility improves, but near-field illumination and cutoff control deteriorate
Solution Approach 1:
The patent employs dynamic aiming mechanisms that adjust the headlamp beam direction and cutoff angle based on vehicle speed. When the vehicle is stationary or moving slowly, the system optimizes for precise cutoff alignment and near-field illumination. When the vehicle accelerates to highway speeds, the system dynamically shifts the beam pattern to extend illumination range while maintaining appropriate cutoff control through active adjustment, thus resolving the contradiction between fixed aiming and variable requirements.
Data Source
AI summary
In an automotive lighting apparatus, at least one lighting component generates a corresponding light field. The lighting component is aligned such that the light field conforms to an illumination profile having a cutoff region meeting a cutoff criterion. At least one actuator is mechanically coupled to the lighting component to aim the lighting component in a direction other than that in which the lighting component was aligned. A control component operates the actuator based on the speed of an automobile in which the lighting component is installed. The actuator is then configured to aim the lighting component in the direction other than that in which the lighting component was aligned so that the light field thereof conforms to another illumination profile meeting another cutoff criterion.