Vehicle Light Guide Body With Selective Decoupling
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Solution Overview
Problem
Vehicle lights face challenges in minimizing installation space while providing multiple light functions, as existing designs often require significant space for separate light sources and light guides, limiting their versatility and efficiency.
Innovation Solution
A vehicle lamp design featuring a light-guiding body with multiple light coupling structures, where each structure has distinct areas for different light sources, allowing for selective light decoupling with unique emission characteristics, thereby reducing space requirements and enabling multiple functions within a single light-guiding body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a light guide is divided into separate areas for different light sources, then each area can provide specific emission characteristics, but the installation space requirement increases
Solution Approach 1:
The light guide body is designed as a universal optical component that can simultaneously receive light from multiple light sources (first and second light sources) and guide it to multiple extraction structures. Each extraction structure can be selectively activated depending on which light source is used, enabling the same physical space to serve multiple lighting functions without requiring separate dedicated areas for each function.
Solution Approach 2:
Different extraction structures within the light guide body are designed with different local optical properties (e.g., different extraction efficiencies, different emission patterns). By selectively activating specific extraction structures based on the active light source, the system provides locally optimized lighting characteristics (such as directed vs. diffuse light) without needing to physically segment the entire light guide into separate functional zones.
2Adaptability or versatility
If multiple light sources are used with different emission characteristics, then lighting versatility is improved, but the device complexity increases
Solution Approach 1:
The light guide body is segmented into multiple extraction structures, each optimized for specific light sources or emission requirements. This segmentation allows independent optimization of each extraction structure's optical properties while maintaining a unified overall structure, reducing the complexity of managing multiple separate light guides or optical assemblies.
Solution Approach 2:
The system implements dynamic activation of extraction structures based on which light source is currently active. Control logic selectively enables or disables specific extraction structures depending on the operational state, allowing the system to adapt its complexity in real-time - using only the necessary extraction structures for the currently active light source, thereby reducing operational complexity while maintaining full versatility.
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 design achieves a compact form factor by utilizing the entire light-guiding body for multiple functions, providing both directed and diffuse lighting without dividing the light guide into separate areas, thus increasing the usable space and allowing for flexible adaptation to various installation situations.
Implementation Method 1
a light guide body (8), which has at least a first light coupling surface (6) for coupling in the light emission of the first light source (4), a second light coupling surface (7) for coupling in the light emission of the second light source (5), and a plurality of light output structures (9) in which the coupled light is reflected in order to exit the light guide body (8) at a light output surface (16)
Data Source
Figure 1~3
Figure 4~6
Figure 7a~7b
AI summary
The light (3) has a light conducting body (8) comprising two light coupling surfaces (6, 7) for coupling light emission of respective light sources (4, 5). A light decoupling structure (9) has an area on which a portion of light emission of one of the sources strikes when the source is switched-on. The structure has another area on which a portion of light emission of another light source strikes when the latter source is switched-on, where the light decoupling caused by the former area has directional characteristics different from the light decoupling caused by the latter area.