Adaptive Headlight Sign-Light Control for Glare-Free Full Beam
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Solution Overview
Problem
Existing glare-free adaptive lighting systems in vehicles fail to adequately reduce light emission into regions that could cause glare to road users, potentially violating legal emission limits.
Innovation Solution
A motor vehicle lighting system with a control unit that adjusts the intensity of the sign light region based on detected road users, using a control means to reduce light emission into this region if glare is imminent, ensuring compliance with legal standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the full beam distribution segments are deactivated to prevent glare to road users, then glare hazard is reduced, but residual light from overlapping segments may still emit into the masked region
Solution Approach 1:
The dipped beam distribution is divided into multiple individually controllable segments, allowing precise control of light emission in different spatial zones. This segmentation enables selective deactivation of segments that would illuminate road users while maintaining illumination in other regions, and provides granular control to address residual light from overlapping segments.
Solution Approach 2:
Different regions of the light distribution are assigned different control characteristics. The sign light region receives specialized control when road users are detected in adjacent areas, while other regions maintain normal operation. This local quality adjustment ensures that glare-prone areas are specifically addressed without compromising overall lighting performance.
2Stability of the object's composition
If the light intensity of individual segments is optimized for homogeneous illumination, then uniformity of light distribution is improved, but the total light emission into regions that may cause glare increases
Solution Approach 1:
The system applies different illumination strategies to different spatial regions. In regions where road users are detected, light intensity is reduced or segments are deactivated. In regions without road users, normal homogeneous illumination is maintained. This local differentiation resolves the contradiction by maintaining uniformity where needed while reducing emission where harmful.
Solution Approach 2:
The light distribution characteristics are dynamically adjusted based on detected road user positions. The system transitions between different illumination states (full intensity, reduced intensity, segment deactivation) depending on the presence and position of road users, allowing the illumination uniformity to be optimized for each specific operational context.
3Reliability
If the sign light region maintains its designated illumination for road sign visibility, then sign light function is preserved, but light emission into this region may still cause glare to road users
Solution Approach 1:
The illumination of the sign light region is dynamically controlled based on detected road user positions. When road users are detected in positions where sign light could cause glare, the system reduces or deactivates sign light emission in those specific directions. When no road users are present, full sign light illumination is maintained for optimal road sign visibility. This dynamic adjustment resolves the contradiction between maintaining sign light function and preventing glare.
Data Source
AI summary
A motor vehicle lighting system (1) including at least two adaptive motor vehicle headlights (2), wherein an adaptive motor vehicle headlight (2) is a headlight that is designed to produce dipped beam distribution (AL) and adaptive full beam distribution (FL) having a resolution of at least two, preferably at least seven, individually controllable segments (FLs1, FLs2, Fls13), wherein the dipped beam distribution (AL) has a region assigned for the road sign lighting, hereinafter referred to as sign light region (ALsl), which at least partially overlaps with an emission region, which is associated with the full beam distribution (FL).