Vehicle Headlight With Controllable Deflection Elements For Central Brightness
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Solution Overview
Problem
Current motor vehicle headlights do not effectively achieve improved illumination of the surrounding area, particularly in central regions, with existing technologies often resulting in uneven light distribution and high brightness requirements.
Innovation Solution
A single headlight system with multiple controllable light beams and deflection elements, such as micromirrors, that vary their solid angle ranges to illuminate specific areas, including a central area with increased brightness by overlapping and positioning light beams to maximize illumination in the central region while maintaining lower brightness in edge areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single light source with multiple light beams is used, then the device complexity is reduced, but the illumination intensity in the central area is insufficient
Solution Approach 1:
The patent combines multiple light beams (first, second, and third light beams with different wavelengths) into a single headlight system, merging their illumination areas so that they overlap in the central area. This merging approach reduces device complexity compared to using separate headlights while achieving enhanced central area brightness through the superposition of multiple beams.
Solution Approach 2:
The patent applies local quality by directing different light beams to create overlapping illumination areas specifically in the central region, while edge areas are illuminated by individual beams. This creates a non-uniform illumination distribution where the central area receives enhanced brightness from multiple beams, addressing the illumination intensity requirement locally without increasing overall system complexity.
2Illumination intensity
If multiple light beams with overlapping illumination areas are used, then the central area brightness is increased, but the beam power requirement increases
Solution Approach 1:
The patent employs periodic action by using controllable deflection elements (such as micromirrors) that rapidly switch between different angular positions to direct light beams across the illumination surface. This periodic deflection allows multiple light beams to scan and overlap in the central area over time, achieving enhanced brightness without requiring all beams to be simultaneously at maximum power, thus reducing overall power requirements.
Solution Approach 2:
The system uses dynamically controllable deflection elements that can adjust the direction and positioning of light beams in real-time. This dynamic control allows optimization of beam overlap in the central area while minimizing beam power requirements by precisely positioning beams only where needed, rather than using static high-power illumination across the entire area.
3Illumination intensity
If controllable deflection elements are used to vary solid angle ranges, then the illumination distribution is improved, but the device complexity increases
Solution Approach 1:
The controllable deflection elements in the patent serve multiple functions: they direct individual light beams to specific areas, create overlapping illumination patterns in the central area, and adjust solid angle ranges for beam control. This multi-functionality allows a single deflection element system to handle multiple illumination requirements without proportionally increasing device complexity.
Solution Approach 2:
The patent uses identical or similar controllable deflection elements for each light beam, creating a modular and replicable structure. Each deflection element copies the same control mechanism and operational characteristics, simplifying the overall control system design and reducing complexity through standardization and modularity.
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 achieves significantly increased brightness in the central area of the light distribution, meeting illumination requirements with reduced beam power and efficient light source design, while maintaining uniform coloration and efficient light generation.
Implementation Method 1
a light source for emitting at least a first and a second light beam, and with at least one first and at least one second controllable deflection element for the variable deflection of the first and second light beams
Data Source
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AI summary
The invention relates to an individual headlight (1) for a motor vehicle, comprising at least one light source (2, 3) for emitting a first and a second light beam (4, 5), and a first and a second controllable deflection element (14, 15) for variably deflecting the first and second light beams (4, 5) onto a predefined illuminated surface (20) within a first and second spatial angle range (α1, α2), respectively, wherein illumination zones (18, 19) that are illuminated by said light beams (4, 5) correspond to the spatial angle range (α1, α2) on the illuminated surface (20). Furthermore, the illuminated surface (20) has two peripheral areas (22, 23, 24) and a central area (21, 25, 26), the two peripheral areas (22, 23, 24) making up a large part of the illuminated surface (20); the two illumination zones (18, 19) both extend into the central area (21, 25, 26) and each encompass only one of the two peripheral areas (22, 23, 24) in order for the surroundings of a motor vehicle to be illuminated better.