Vehicle Light Guide With Color Conversion for Uniform Multi-Color Output
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Solution Overview
Problem
Conventional lighting devices for vehicles face issues with inefficient light transmission due to opaque diffuser layers, high costs, and the need for multiple components to achieve homogeneous illumination and various light colors for different functions, leading to increased complexity and cost.
Innovation Solution
A luminous device comprising at least two light sources and a light-converting material that integrates with an optical component, such as a light guide or reflector, to distribute and convert light, allowing for homogeneous emission and multiple colors without the need for additional securing means, reducing assembly time and component count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a diffuser layer is used to achieve homogeneous illumination, then homogeneity of light distribution is improved, but light transmission efficiency deteriorates due to opaque nature
Solution Approach 1:
The patent removes the traditional diffuser layer from the lighting system and replaces it with multiple light sources arranged in a specific pattern. This extraction eliminates the light-blocking diffuser material while maintaining homogeneous illumination through the geometric arrangement of multiple emission points, thereby resolving the contradiction between homogeneity and light transmission efficiency.
Solution Approach 2:
The patent divides the lighting system into multiple discrete light sources (LEDs) arranged in a matrix pattern rather than using a single source with a diffuser. This segmentation allows light to be emitted from multiple points simultaneously, achieving homogeneous distribution without requiring an opaque diffuser layer, thus improving light transmission efficiency while maintaining uniformity.
2Adaptability or versatility
If multiple lighting modules and optical components are used to achieve different light colors, then color versatility is improved, but device complexity increases
Solution Approach 1:
The patent employs light sources that can emit multiple wavelengths or colors (such as RGB LEDs or phosphor-converted LEDs) within a single integrated structure. This multi-functional approach allows the same physical component to provide different light colors for various lighting functions, eliminating the need for separate lighting modules and reducing overall device complexity while maintaining color versatility.
Solution Approach 2:
The patent combines multiple light-emitting elements and color-converting materials into a single integrated lighting device. By merging the functions of multiple colored LEDs, diffusers, and optical components into one unified structure with a specific geometric arrangement, the system achieves color versatility without increasing component count, thereby resolving the contradiction between adaptability and device complexity.
3Stability of the object's composition
If a diffuser film is applied to large emitting surfaces, then homogeneous illumination is improved, but manufacturing cost increases
Solution Approach 1:
The patent eliminates the diffuser film from the manufacturing process by using multiple light sources arranged in a matrix pattern. This extraction removes the need to source, apply, and integrate expensive diffuser materials, thereby reducing manufacturing costs while maintaining homogeneous illumination through the geometric arrangement of light sources.
Solution Approach 2:
The patent replaces expensive diffuser films with simple, inexpensive LED components arranged in a specific pattern. The LED matrix approach uses readily available, low-cost light-emitting diodes that can be mounted using standard SMT techniques, significantly reducing material and assembly costs compared to sourcing and applying specialized diffuser films, thus resolving the contradiction between homogeneity and manufacturing 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 solution achieves homogeneous illumination with improved light transmission efficiency, enabling the luminous device to emit multiple colors using fewer components, thus simplifying assembly and reducing costs while meeting regulatory and functional requirements.
Implementation Method 1
a light-converting material (106) to convert a colour of light emitted by the light sources (112) or to convert a colour of light distributed by the optical component (104) into a different colour
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 2C~3A
AI summary
The present invention pertains to a luminous device (100, 200) for a motor vehicle. The luminous device (100, 200) comprises two or more light sources (112, 212) emitting light of at least two distinct colours. An optical component such as a light guide (104) or a reflector (204) is provided to distribute light emitted by the light sources (112, 212), outwards through a lens (108, 208). Further, a light converting material (106, 206) is provided to convert the colour of light passing through it. The composition of the light converting material (106, 206) allows to achieve number of colours of light emitted by the device (100, 200) being more than the number of colours of light generated by the light sources (112, 212).