Vehicle Lighting Device With Segmented Paraboloid Reflector
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Solution Overview
Problem
Existing vehicle lighting devices struggle to achieve high light intensity for high beams and different light intensities for various applications, such as daytime running lights, due to the complexity of reflective facet arrangements, which complicates manufacturing and fails to meet regulatory standards.
Innovation Solution
A lighting device with a single reflector having a hyperbolic paraboloid shape, where the first light source is associated with the central sector for low-intensity daytime running light and the second light source with peripheral sectors for high-intensity road lighting, with the second source placed at the focus of each peripheral sector and the first source closer to the reflector, allowing for separate light distribution optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a reflector with successive reflective facets of two types is used to generate different light distributions, then two different light distributions can be obtained, but the device cannot achieve high light intensity required for high beams and cannot handle light sources with very different intensities
Solution Approach 1:
The reflector is divided into multiple independent sectors (first sector, second sector, third sector), each with specific reflective properties. The first sector reflects light from the first light source, the second sector reflects light from the second light source, and the third sector provides additional reflection. This segmentation allows each sector to be optimized for specific light sources and intensity requirements, enabling the generation of high-intensity high beams while maintaining versatility for different light distribution patterns.
2Adaptability or versatility
If a reflector with successive reflective facets is used, then different light distributions can be generated, but the manufacturing complexity increases significantly
Solution Approach 1:
Different sectors of the reflector are assigned different reflective qualities and geometries tailored to their specific functions. The first sector has reflective properties optimized for the first light source, the second sector for the second light source, and the third sector for additional reflection. This local optimization allows each sector to be manufactured independently with simpler processes, reducing overall manufacturing complexity while maintaining the ability to generate multiple light distribution patterns.
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 the device to meet regulatory light intensity requirements for both daytime running lights and high beams, simplifying manufacturing by using a single reflector with distinct sector arrangements, ensuring effective light distribution and compliance with standards.
Implementation Method 1
at least one light reflector (4) capable of reflecting the light emitted by the first source (2) and the light emitted by the second source (3)
Implementation Method 2
the reflector comprises a succession of two types of reflective facets
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to a lighting and/or signaling device (1) for a vehicle, comprising a first light source (2) and a second light source (3), and a light reflector (4) capable of reflecting the light emitted by the sources, characterized in that: - said reflector has a paraboloid shape comprising a plurality of sectors including a central sector (5) and at least one peripheral sector (6) adjacent to said central sector, - said central sector is configured to reflect the light emitted by said first source (2), so that the device (1) is capable of generating a light distribution of a daytime running light, and - said at least one peripheral sector is configured to focus the light emitted by said second source (3), so that the device (1) is capable of generating a light distribution of a high beam.