Multi-Section Light Guide for Uniform Vehicle Signal Illumination
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Solution Overview
Problem
Existing signal light or illumination devices experience uneven light distribution due to multiple light deflections, leading to non-uniform light intensity across exit surfaces.
Innovation Solution
The device incorporates optical structures on the first section to deflect light rays uniformly into the second section, using deflection elements to ensure consistent light intensity across the extraction area, with the first and second sections forming an obtuse angle and employing deflection prisms to align light rays parallel to the main emission direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple light deflections are used to guide light from the light entry area to the light extraction area, then the light propagation path can be adapted to predetermined installation positions, but light intensity is lost and the illumination becomes uneven across the exit surface
Solution Approach 1:
The first outer surface is equipped with optical structures at specific locations to deflect light rays in a controlled manner. These optical structures create local variations in light deflection, ensuring that light is distributed more uniformly across the second section and ultimately across the light extraction area, resolving the uneven illumination problem while maintaining the adapted light propagation path
Solution Approach 2:
Light rays are deflected by the optical structures on the first outer surface before entering the second section. This preliminary deflection ensures that light is pre-distributed across the second section, preventing light intensity loss and ensuring uniform illumination at the light extraction area before the final emission
2Productivity
If light rays are parallelized in one plane but not in another plane, then the light can be guided efficiently through the first section, but uneven illumination occurs in subsequent sections
Solution Approach 1:
Optical structures are strategically positioned on the first outer surface to provide localized light deflection in the second plane (orthogonal to the first plane). This creates non-uniform deflection patterns that compensate for the lack of parallelization in the second plane, ensuring uniform light distribution across the second section and subsequent sections
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 light emission across the exit surface, ensuring a constant light intensity and improved light uniformity by aligning light rays parallel to the main emission direction through multiple reflections.
Implementation Method 1
designed to deflect light, which propagates inside the second section and strikes the second deflection elements, in the direction of the front side
Implementation Method 2
the first deflection element connects the first section to the second section in a light-guiding manner and is designed to deflect light that has entered the first section, after it has passed through the first section, into the second section, in particular by means of total reflection
Data Source
AI summary
Signal light or illumination device for a motor vehicle or for a motor vehicle headlight, comprising a light source, a light guiding body associated with the light source, wherein the light guiding body has a first section, a second section, and a first deflection element, wherein the first section is designed as a first light guiding channel and the second section is designed as a second light guiding channel, wherein the first deflection element connects the first section to the second section in a light-guiding manner, wherein the first light guiding channel has optical structures, which are designed to deflect light rays entering the first light channel, wherein the deflection by the optical structures is such that deflected light illuminates deflection elements of the second section substantially uniformly in such a way that light exiting the second section has a constant light intensity.