Vehicle Lamp System Adaptive Beam Glare Reduction
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Solution Overview
Problem
Current adaptive driving beam (ADB) control systems fail to adjust the brightness of reflective objects, leading to inconsistent visibility for drivers due to increased light intensity from vehicle lamps, resulting in glare and reduced visibility.
Innovation Solution
A vehicle lamp system that includes an imaging unit, luminance analysis, and illuminance setting units to dynamically adjust light distribution patterns based on detected luminance levels, reducing glare by alternately radiating and shielding light to reflective objects, thereby improving driver visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If luminance of vehicle lamps is increased to improve illumination, then visibility in dark areas is improved, but glare from reflective objects increases causing reduced driver visibility
Solution Approach 1:
The patent applies periodic action by alternately switching the light distribution pattern between a first pattern (with reduced illuminance to reflective objects) and a second pattern (with normal illuminance). This periodic switching at a frequency imperceptible to the human eye allows the driver to perceive a stable, reduced glare effect while maintaining overall illumination levels
Solution Approach 2:
The system dynamically adjusts the light distribution pattern by switching between different illuminance settings for individual regions based on detected luminance levels. The control unit modifies the illuminance of light radiated to specific regions in real-time, creating a dynamic balance between illumination and glare reduction
2Object-affected harmful factors
If light distribution pattern is adjusted to reduce glare to reflective objects, then driver visibility is improved, but illumination to other regions may be insufficient
Solution Approach 1:
The patent applies local quality by adjusting the illuminance of light for individual regions independently. The control unit determines illuminance values for each region based on luminance detection results, allowing selective glare reduction for reflective objects while maintaining normal or enhanced illumination for other regions that do not cause glare
Solution Approach 2:
By periodically switching between light distribution patterns with different regional illuminance settings, the system ensures that over time, all regions receive adequate illumination while reflective objects experience reduced glare during specific phases of the switching cycle
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
The system enhances driver visibility by dynamically adjusting light distribution patterns to reduce glare from reflective objects, even with high-luminance vehicle lamps, by alternately radiating and shielding light, thus improving overall visibility and reducing glare.
Implementation Method 1
When a reflective object is irradiated with light, the reflective object becomes a high luminance body in image information of a camera
Implementation Method 2
a light source unit configured to independently adjust illuminance of light to be radiated to each of the plurality of individual regions
Data Source
AI summary
A vehicle lamp system includes an imaging unit which images a front of an own vehicle to generate image information, an imaging control unit which controls the imaging unit to perform an operation of generating image information with a first time period and an operation of generating image information with a second time period, a luminance analysis unit which detects luminance of individual regions in front of the own vehicle, an illuminance setting unit which determines a light distribution pattern. The illuminance setting unit, for an individual region whose luminance is within a high luminance range, sets an illuminance value such that luminance of the individual region decreases due to formation of the light distribution pattern, and for an individual region whose luminance is within a low luminance range, sets an illuminance value such that luminance of the individual region increases due to formation of the light distribution pattern.