Integrated Vehicle Headlight Optics for Compact High-Low Beam
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Solution Overview
Problem
Current headlight designs for motor vehicles require separate modules for high-beam and low-beam light distributions, leading to increased installation space, low efficiency, high development costs, and long development times, which are inconsistent with the trends of smaller installation spaces and efficiency in the automotive market.
Innovation Solution
A compact headlight design that integrates a first and second luminous surface within the same plane, utilizing projection optics to generate both high-beam and low-beam light distributions, with luminous segments arranged in a matrix to achieve a full light distribution efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate modules are used for high-beam and low-beam light distributions, then the light distribution functionality is achieved, but the installation space increases and efficiency decreases
Solution Approach 1:
The patent combines high-beam and low-beam light distribution functionalities into a single integrated module. The projection optics system projects light from both luminous surfaces (first for high-beam, second for low-beam) through the same optical path, eliminating the need for separate modules and reducing installation space while maintaining full light distribution functionality.
Solution Approach 2:
The single module is designed to perform multiple functions: generating both high-beam and low-beam light distributions, creating forefield portions, and producing cut-off lines. The projection optics serves as a universal component that handles light projection for different beam types, making the system multi-functional rather than requiring dedicated components for each function.
2Adaptability or versatility
If elaborate primary optics are used to generate full light distribution from one module, then the light distribution is achieved, but the installation depth increases and system efficiency decreases
Solution Approach 1:
The luminous surface is segmented into distinct first and second luminous surfaces, each dedicated to specific light distribution functions (high-beam and low-beam respectively). This segmentation allows the projection optics to handle different light distributions separately yet simultaneously through the same optical path, reducing the need for elaborate primary optics and minimizing installation depth.
Solution Approach 2:
The projection optics acts as an intermediary component that receives light from both luminous surfaces and projects them into the area around the motor vehicle. This intermediary approach eliminates the need for complex primary optics by using a single projection system to handle both high-beam and low-beam distributions, thereby reducing installation depth while maintaining full functionality.
3Adaptability or versatility
If multiple modules are used to generate full light distribution, then the light distribution functionality is complete, but the number of variants increases and development costs increase
Solution Approach 1:
The patent merges high-beam and low-beam generation capabilities into a single module with unified projection optics. This consolidation reduces the number of separate components and variants needed, as the same projection optics serves both functions. Consequently, development efforts and costs are reduced compared to maintaining separate modules for different light distribution types.
Solution Approach 2:
The single module is designed as a universal solution that can generate both high-beam and low-beam distributions, eliminating the need for multiple specialized modules. This multi-functionality approach reduces the range of variants that need to be developed and homologated for different vehicle types and regions, thereby reducing development complexity and costs.
4Adaptability or versatility
If conventional primary optics are used for different homologation areas, then the light distribution requirements are met, but the development time increases and development costs increase
Solution Approach 1:
The projection optics system is designed as a universal component that can accommodate different homologation area requirements through software-based pixelation control rather than hardware modifications. The pixelated light sources can be programmed to generate different light distributions for various regions, eliminating the need to develop and homologate multiple optical variants, thereby significantly reducing development time and costs.
Solution Approach 2:
The system uses software-based control to change the light distribution parameters (such as cut-off line positions and beam patterns) to meet different homologation area requirements. By adjusting digital control parameters rather than physical optics, the same hardware can be adapted to various regional regulations, reducing development time and avoiding the need for multiple optics variants.
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 solution allows for a compact module that reduces installation space, lowers development costs, and enhances efficiency while maintaining compatibility with existing SSL technology, enabling faster development and reduced logistics costs.
Implementation Method 1
projection optics configured so as to project light emanating from the first and second luminous surfaces into the area around the motor vehicle
Data Source
AI summary
A headlight for a motor vehicle, comprising a first luminous surface, wherein the headlight is configured so that light emanates from the first luminous surface and is used to generate a high-beam light distribution. A second luminous surface is provided such that light emanates from the second luminous surface and is used to generate a forefield portion of a low-beam light distribution. Projection optics are configured so as to project light emanating from the first and second luminous surface into an area around the motor vehicle.