Multi-Aspect Ratio Headlight Projector for Central Illumination
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Solution Overview
Problem
Existing vehicle headlight assemblies struggle to efficiently produce desired illumination patterns, particularly in central regions of the field of view, due to the need for multiple pixel light sources to achieve adequate intensity.
Innovation Solution
The headlight assembly incorporates a spread pattern light source and a spot pattern light source, each with a plurality of pixel light sources, and utilizes identical lens assemblies to project light over different fields of view, ensuring efficient and customizable illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple pixel light sources are used to produce desired illumination intensity in central regions, then illumination intensity is improved, but device complexity increases
Solution Approach 1:
The patent divides the illumination system into two distinct light source groups: a spread pattern light source with multiple pixel light sources for wide-area illumination, and a spot pattern light source with fewer pixel light sources for concentrated central illumination. This segmentation allows each group to be optimized independently, reducing the total number of pixel light sources needed while maintaining desired illumination intensity in central regions.
Solution Approach 2:
The patent applies different illumination characteristics to different regions of the field of view. The spread pattern light source provides broad illumination for peripheral areas, while the spot pattern light source delivers concentrated intensity to the central region. This local quality differentiation allows the system to achieve desired illumination intensity in central regions without requiring all areas to be illuminated at maximum intensity, thereby reducing overall device complexity.
2Manufacturing precision
If different lens assemblies are used for spread and spot patterns, then illumination pattern precision is improved, but manufacturing complexity increases
Solution Approach 1:
The patent employs identical lens assemblies for both the spread pattern light source and the spot pattern light source. Each lens assembly is designed to work with the pixel light sources regardless of their quantity or arrangement pattern. This universal design allows the same lens component to serve multiple functions, achieving precise illumination patterns for both spread and spot configurations without requiring separate customized lens assemblies, thereby simplifying manufacturing.
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
This configuration allows for enhanced control over illumination patterns, meeting regulatory requirements and providing improved visibility on the road, while optimizing the use of pixel light sources.
Implementation Method 1
a first lens assembly overlying the spread pattern light source and configured to project the light from the spread pattern light source over a first field of view
Data Source
AI summary
A headlight assembly for a vehicle includes a spread pattern light source including a first plurality of pixel light sources and a first lens assembly overlying the spread pattern light source and configured to project the light from the spread pattern light source over a first field of view. The headlight assembly also includes a spot pattern light source including a second plurality of pixel light sources, and a second lens assembly overlying the spot pattern light source and configured to project the light from the spot pattern light source over a second field of view smaller than the first field of view and overlapping the first field of view. The first lens assembly and the second lens assembly each have substantially identical constructions.