Hybrid Headlamp Laser LED Beam Harmonization
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Solution Overview
Problem
Current vehicle lighting systems face challenges in balancing aesthetic appeal, cost, technology, and regulatory requirements, particularly in providing effective illumination while meeting safety standards and styling considerations, with headlamps often being complex and costly due to the use of multiple components like reflectors and lenses.
Innovation Solution
A hybrid headlamp assembly that combines laser solid state light sources with solid state light sources, such as LEDs, to generate a low beam distribution with a high luminance hot spot region and a wider spread distribution, allowing for improved visibility and reduced complexity and cost, while meeting safety and styling standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional headlamps use multiple components (reflectors, lenses, cut-off devices), then lighting performance and regulatory compliance are achieved, but device complexity and cost increase
Solution Approach 1:
The patent combines multiple traditional headlamp components (reflectors, lenses, cut-off devices) into a single integrated solid-state light source module. The module integrates the light source, optical elements, and beam shaping components into one unified structure, reducing the total number of separate parts while maintaining lighting performance and regulatory compliance.
Solution Approach 2:
The solid-state light source module is designed to perform multiple functions simultaneously: it provides illumination, shapes the beam pattern, implements cut-off functionality, and ensures regulatory compliance all within a single component. This multi-functional design eliminates the need for separate dedicated components for each function.
2Shape
If aesthetic lighting effects are added to enhance vehicle styling, then aesthetic appeal improves, but device complexity and cost increase
Solution Approach 1:
Aesthetic lighting effects are integrated directly into the solid-state light source module structure. The module incorporates aesthetic elements (such as patterned LEDs or integrated light guides) as inherent parts of the design rather than adding separate aesthetic components, thereby maintaining aesthetic appeal while avoiding increased complexity.
3Illumination intensity
If laser diode light sources are used to provide high luminance, then down-the-road visibility improves, but cost increases compared to LED sources
Solution Approach 1:
The patent uses different light source types in different regions of the headlamp assembly. High-luminance laser diodes are deployed specifically in regions requiring down-the-road visibility (such as high-beam areas), while cost-effective LED sources are used in other regions (such as low-beam areas). This localized approach optimizes performance where needed while controlling overall cost.
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 hybrid headlamp system provides enhanced visibility and aesthetic appeal while meeting regulatory requirements, offering a high luminance and cost-effective solution by harmonizing the beam patterns of different light sources, thus improving vehicle safety and styling without increasing complexity.
Implementation Method 1
a first laser solid state light source optically configured to emit a first luminous intensity distribution
Implementation Method 2
a second solid state light source module having a solid state light source optically configured to emit a third luminous intensity distribution
Data Source
AI summary
A headlamp assembly includes a low beam assembly configured to generate a low beam distribution that includes a first low beam module having a first laser solid state light source that is optically configured to emit a first luminous intensity distribution and a second laser solid state light source that is optically configured to emit a second luminous intensity distribution, and a second low beam module having a solid state light source that is optically configured to emit a third luminous intensity distribution, which at least partially overlaps at least one of the first and second luminous intensity distributions; the headlamp assembly also having a high beam assembly configured to generate a high beam distribution.