Adaptive Vehicle Headlamp Cell Control for Anti-Glare Illumination
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Solution Overview
Problem
Existing vehicle headlamp systems can obstruct the visual fields of other drivers or passersby due to light irradiation, potentially causing accidents.
Innovation Solution
A headlamp device equipped with an object detector and controller that adjusts the light emitting cells based on detected objects, turning off specific cells to prevent glare and obstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the headlamp emits light to illuminate the driver's visual field, then the driver can safely drive through discrimination of front and rear sides, but the light can obstruct the visual field of passersby or drivers of other vehicles
Solution Approach 1:
The headlamp device is divided into multiple independently controllable light emitting units, each capable of being selectively activated or deactivated. This segmentation allows the system to illuminate specific areas while avoiding others, resolving the contradiction by enabling targeted illumination that protects other road users' visual fields while maintaining driver visibility.
Solution Approach 2:
The headlamp system dynamically adjusts which light emitting units are active based on real-time detection of other vehicles or road users. The controller modifies the illumination pattern by turning off specific units when objects are detected in their illumination paths, creating a dynamic adaptation that prevents visual obstruction while maintaining driving safety.
2Device complexity
If the headlamp uses a fixed illumination pattern, then the structure is simple, but it cannot prevent light from traveling towards detected objects
Solution Approach 1:
The headlamp is segmented into multiple independently controllable light emitting units, each with its own control circuitry. This segmentation enables selective activation of individual units based on detected object positions, allowing the system to maintain relatively simple overall structure while achieving reliable directional light control through modular independence.
Solution Approach 2:
The system incorporates an object detector that provides real-time feedback about the positions of other vehicles or road users. The controller uses this feedback information to dynamically adjust which light emitting units are active, creating a closed-loop control system that reliably prevents light from traveling towards detected objects while maintaining simple operational logic.
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
Prevents visual field obstruction of other drivers or passersby by controlling light emission towards detected objects, reducing the risk of accidents.
Implementation Method 1
Each of the light emitting cells includes a light emitting structure and a wavelength conversion member formed on the light emitting structure
Data Source
AI summary
A headlamp device includes a headlamp, an object detector, and a controller. The headlamp is mounted on a vehicle and includes a light emitting unit composed of multiple light emitting cells. The object detector detects an object around the vehicle and generates an object detection signal including object coordinates corresponding to a location of the detected object. The controller controls light of the headlamp based on information on the object coordinates. The controller may control the light emitting unit such that at least some light emitting cells are turned off according to an object detection signal. Each of multiple light emitting units includes a circuit board, the multiple light emitting cells separated from each other on the circuit board, a molding member formed between the light emitting structures, and a protective member formed on the molding member to surround sides of the multiple wavelength conversion members while filling a gap between the multiple wavelength conversion members.