Segmented Reflector Headlamp Layout for High and Low Beam Control
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Solution Overview
Problem
Existing vehicular headlamps lack a design that balances high beam and low beam functionality with a high degree of design freedom and compact size.
Innovation Solution
A lighting apparatus with a reflector having multiple reflective plates of varying shapes and a matrix arrangement, combined with independently controllable light sources, allows for both high beam and low beam operation in a single compact unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single reflector is used for both high beam and low beam illumination, then the device complexity is reduced, but the design freedom and light distribution efficiency are limited
Solution Approach 1:
The reflector is divided into multiple reflective plates (first reflective plate, second reflective plate, third reflective plate, etc.) with different shapes and orientations. Each reflective plate can be independently designed to control light distribution for specific beam patterns, enabling both high beam and low beam illumination with optimized light paths for each function.
Solution Approach 2:
Different regions of the reflector structure are assigned different reflective properties through the use of reflective plates with varying shapes, sizes, and orientations. For example, the first reflective plate has a specific shape optimized for high beam illumination while the second reflective plate has a different shape optimized for low beam illumination, allowing each local region to perform its specialized function.
2Productivity
If multiple light sources are used for high beam and low beam, then the light distribution efficiency is improved, but the device size increases
Solution Approach 1:
Multiple light sources (first light source, second light source, third light source, etc.) are integrated into a single light source unit with a unified support structure and shared reflector system. This merging approach allows independent control of each light source for different beam patterns while maintaining a compact overall apparatus size, as the light sources share common structural elements rather than having separate housing for each.
3Manufacturing precision
If reflective plates with different shapes are used, then the illumination pattern control is improved, but the manufacturing complexity increases
Solution Approach 1:
The complex reflector surface is segmented into multiple discrete reflective plates with simpler individual geometries. Each reflective plate can be manufactured using standard fabrication processes, and the precise illumination pattern control is achieved through the collective arrangement and optical design of these segmented elements rather than requiring a single complex monolithic reflector.
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 enables efficient illumination of different regions with reduced size and enhanced design flexibility by optimizing light distribution using a reflector with diverse reflective plates and separate light sources.
Implementation Method 1
a reflector separated from the first light source and the second light source and reflecting light emitted from the first light source and the second light source
Data Source
AI summary
A lighting apparatus includes a light source part having a first light source and a second light source provided away from the first light source, a reflective part provided away from the first light source and second light source and reflecting light emitted from the first light source and second light source, and a support part facing the reflective part and supporting the light source part. The reflective part includes a plurality of reflective plates which are continuously provided. Each of the reflective plates provided adjacent to one another has a reflective surface which is shaped differently from one another.