Integrated ADB Headlight System for Precise Dimming
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Summary
Problems
Current Adaptive Driving Beam (ADB) systems for motor vehicle headlights are hindered by the structural separation of the environment recording device from the headlight system, leading to high computing power requirements, significant time delays, and errors in dimming scenarios due to incorrect object recognition, which can cause driver distraction.
Innovation solutions
A self-sufficient ADB lighting device with a sensor pixel array and light pixel array integrated into a compact, thermally stable base support, utilizing a microcontroller to control both light and sensor components, and optionally incorporating a laser light source for distance measurement, allowing for direct preprocessing and reduced latency in dimming operations.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If an external ambient light sensor is used to control headlight dimming, then the headlight system can adapt to surrounding light conditions, but significant time delays and processing errors occur due to separate system architecture and complex coordinate transformations
Why choose this principle:
The patent combines the light sensor array and light source array into a single integrated headlight unit with a unified control unit. The sensor pixels are positioned to directly correspond with light-emitting pixels, eliminating the need for external sensors and complex coordinate transformations. This integration enables real-time detection and response to surrounding light conditions without time delays.
Principle concept:
If an external ambient light sensor is used to control headlight dimming, then the headlight system can adapt to surrounding light conditions, but significant time delays and processing errors occur due to separate system architecture and complex coordinate transformations
Why choose this principle:
The patent introduces a light sensor array with pixels that directly correspond to light-emitting pixels as an intermediary detection mechanism. Each sensor pixel detects light conditions in the specific direction corresponding to its paired light-emitting pixel, providing direct feedback for precise dimming control without requiring complex image processing or coordinate transformations.
Application Domain
Data Source
AI summary:
A self-sufficient ADB lighting device with a sensor pixel array and light pixel array integrated into a compact, thermally stable base support, utilizing a microcontroller to control both light and sensor components, and optionally incorporating a laser light source for distance measurement, allowing for direct preprocessing and reduced latency in dimming operations.
Abstract
Lighting device for a motor vehicle headlight (1) comprising a light generating unit (2), a light sensor device (3), a control unit (4) and a base carrier (5), wherein the light sensor device (3) comprises a light sensor (30, 3000) and the light generating unit (2) comprises a light source (20, 2000), wherein the light sensor (30, 3000) comprises a sensor pixel array (31) and the light source (20, 2000) comprises a light pixel array (21), wherein the light generating unit (2) is configured to generate a segmented light distribution, wherein each light pixel (210, 2100) is configured to generate at least one segment of the segmented light distribution, wherein the light sensor device (3) is configured to detect the segmented light distribution, wherein each sensor pixel (310, 3100) is configured to detect an area of the segmented light distribution, wherein the sensor pixels (310, 3100) and the light pixels (210,2100) correspond to each other in groups such that each sensor pixel group (310a, 310b, 310c, 310d) is assigned exactly one light pixel group (210a, 210b, 210c, 210d) such that this sensor pixel group (310a, 310b, 310c, 310d) can detect only that part of the segmented light distribution of the corresponding light pixel group (210a, 210b, 210c, 210d), wherein each sensor pixel group (310a, 310b, 310c, 310d) outputs a signal indicating a light intensity value of the detected light, wherein the control unit (4) is configured to determine the luminance of the light pixel groups (210a, 210b, 210c, 210d).