Matrix Headlight Control for Dynamic Bending Light Without Moving Parts
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Solution Overview
Problem
Existing mechanical-based solutions for Dynamic Bending Light (DBL) in automotive lighting rely on moving parts and are limited in adapting to various driving conditions, such as speed and oncoming traffic, leading to suboptimal road illumination.
Innovation Solution
A method utilizing a matrix arrangement of light pixels that adjusts light patterns based on road profiles, shifting row groups according to road features, and creating a third portion to fill gaps, without moving parts, and optionally using solid-state light sources and adaptive driving beam functionality to avoid glaring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If mechanical-based solutions with moving parts are used for Dynamic Bending Light, then the light source can turn in the direction of movement, but the device complexity increases and mechanical wear occurs
Solution Approach 1:
The patent replaces the mechanical angular movement converter system with an electronic control system that uses a matrix arrangement of light pixels. Instead of physically moving the light source, the system electronically shifts light patterns by selectively activating different pixels in the matrix, thereby eliminating moving parts while maintaining the ability to direct light along the vehicle's path through curves
Solution Approach 2:
The patent divides the light source into a matrix arrangement of individual light pixels that can be controlled independently. This segmentation allows different portions of the light pattern to be shifted by different amounts, enabling complex light redirection patterns without mechanical movement. The matrix structure with rows and columns of controllable pixels provides the granularity needed to create dynamic bending light effects
2Adaptability or versatility
If standard headlights are used, then the device complexity is low, but the adaptability to driving conditions such as curves and speed is insufficient
Solution Approach 1:
The patent implements a dynamic lighting system where the light pattern can be continuously adjusted based on real-time driving conditions. The control system receives input about vehicle speed, steering angle, and road curvature, then dynamically recalculates and repositions the light pattern across the matrix of pixels to optimize illumination along the vehicle's anticipated path, creating a lighting system that adapts fluidly to changing driving conditions
Solution Approach 2:
The system incorporates feedback mechanisms that monitor driving parameters such as steering wheel position, vehicle speed, and lateral acceleration. This feedback is processed by the control unit to determine the appropriate light pattern shifts, ensuring the lighting adapts accurately to the driver's intentions and actual vehicle dynamics, thereby improving both adaptability and safety
3Ease of manufacture
If light pattern shifting is applied to all row groups uniformly, then the implementation is simple, but the road illumination focus and adaptability are reduced
Solution Approach 1:
The patent applies different shifting values to different row groups of the light matrix based on their specific positional requirements. Rather than uniformly shifting all rows by the same amount, the system calculates optimal shift amounts for each row group individually, allowing the light pattern to maintain its focus on the road surface while adapting to curve geometry. This local differentiation optimizes illumination distribution across the road width
4Speed
If mechanical angular movement converters are used, then direct steering wheel connection provides immediate response, but the system cannot independently adapt to speed and oncoming traffic
Solution Approach 1:
The patent creates a universal lighting control system that can perform multiple functions through a single electronic matrix structure. The same matrix of light pixels and control logic that enables dynamic bending light also supports adaptive high beam, oncoming traffic detection, and speed-based illumination adjustment. This multi-functional approach allows the system to respond immediately to steering input while simultaneously adapting to various driving circumstances without requiring separate mechanical systems
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances road illumination focus and adaptability to driving conditions, providing predictive visibility and compliance with regulatory cut-offs, while reducing energy consumption and mechanical wear.
Implementation Method 1
The light pixels are provided by solid-state light sources. The term 'solid state' refers to light emitted by solid-state electroluminescence, which uses semiconductors to convert electricity into light.
Data Source
AI summary
The invention provides a method for controlling a light pattern provided by an automotive lighting device of an automotive vehicle. The method includes providing a road profile, extracting road features from the road profile, dividing the matrix arrangement in row groups, assigning a different shifting value for each row group, each shifting value depending on the road features, dividing each row group in a first portion and a second portion, shifting the operation of the first portion of each row group of light sources according to the corresponding shifting value and create a third portion between the shifted first portion and the second portion of each row group.