Vehicle Headlamp Glare Suppression via Segmented Light Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Vehicle headlamps cause glare for preceding vehicles and pedestrians when light is irradiated above a certain cutoff line, leading to difficulty in seeing pavement markers and pedestrians, especially when dimmed areas are present.
Innovation Solution
A vehicle headlamp apparatus with a low beam lamp unit, a first additional lamp unit forming light above the cutoff line, and a second additional lamp unit, where the luminous intensity of light in specific partial regions can be adjusted by a controller to reduce glare and maintain visibility of road features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light is irradiated above the cutoff line to improve visibility, then driver visibility is improved, but glare is generated for preceding vehicles and pedestrians
Solution Approach 1:
The headlamp system is divided into multiple independent lamp units (low beam lamp unit, first additional lamp unit, second additional lamp unit) that can be controlled separately. Each unit illuminates specific regions, allowing the system to segment the illumination above the cutoff line into controlled zones that reduce glare while maintaining visibility.
Solution Approach 2:
The patent implements adjustable luminous intensity for specific partial regions (first partial region, second partial region) rather than uniform illumination. The controller selectively adjusts the luminous intensity of individual lamp units based on detected objects, creating local quality variations that suppress glare in specific directions while maintaining illumination in others.
2Object-affected harmful factors
If luminous intensity is reduced in specific regions to suppress glare, then glare is suppressed, but dark areas are created that obscure pavement markers and pedestrians
Solution Approach 1:
The system dynamically adjusts the luminous intensity of individual lamp units based on real-time detection results. When a preceding vehicle or pedestrian is detected, the controller selectively reduces intensity in specific partial regions while maintaining or adjusting intensity in other regions, creating a dynamic illumination pattern that adapts to environmental conditions.
Solution Approach 2:
The system uses object detection (preceding vehicles, pedestrians) as feedback to control the luminous intensity of different lamp units. The controller continuously monitors the environment and adjusts the illumination pattern accordingly, reducing intensity only when and where necessary to suppress glare while maintaining visibility of road features.
3Object-affected harmful factors
If multiple additional lamp units are used to control light distribution, then glare suppression and visibility maintenance are achieved, but device complexity increases
Solution Approach 1:
The multiple additional lamp units serve multiple functions simultaneously: they provide supplemental illumination above the cutoff line, enable selective glare suppression in different directions, and maintain visibility of road features. Each lamp unit can be independently controlled to achieve different illumination patterns based on detection results.
Data Source
AI summary
A vehicle headlamp apparatus is provided. The vehicle headlamp apparatus includes a lamp unit, a first additional lamp unit which forms a first light distribution pattern, a second additional lamp unit which forms a second light distribution pattern overlapping with the first light distribution pattern, and a controller. The first light distribution pattern includes at least one first partial region, and the first additional lamp unit adjusts a luminous intensity of a light to be irradiated toward the first partial region. The second light distribution pattern includes at least one second partial region which partially overlaps with the first partial region, and the second additional lamp unit adjusts a luminous intensity of a light to be irradiated toward the second partial region. The controller controls the first additional lamp unit and the second additional lamp unit to adjust the luminous intensity of the partial regions.