Waveguide Scattering Flanges for Uniform Light Distribution
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Solution Overview
Problem
Existing light pipes lack controlled light distribution capabilities, particularly in vehicle applications, where uniform illumination and specific light patterns are difficult to achieve, leading to inefficient use of light sources and aesthetic concerns.
Innovation Solution
A waveguide with a body having scattering flanges axially extending toward the proximate end and notches interposed between them, designed to reflect and scatter light backwardly, providing controlled light distribution and uniform illumination patterns by adjusting the angle, depth, and distribution of flanges and notches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If traditional light pipes are used for illumination, then light can be transmitted, but controlled light distribution and uniform illumination patterns cannot be achieved
Solution Approach 1:
The waveguide body is segmented into multiple scattering flanges that are axially extending toward the proximate end. Each flange acts as an independent light scattering element, allowing controlled distribution of light throughout the waveguide length. The notches between flanges further segment the light path, enabling precise control over illumination patterns.
Solution Approach 2:
Different regions of the waveguide are given different optical properties through the strategic placement and configuration of scattering flanges. The flanges have varying angles, depths, and distributions along the waveguide body, creating localized light scattering zones that collectively achieve uniform illumination while maintaining structural control.
2Adaptability or versatility
If light is directed forward through the waveguide, then illumination is provided, but backward light distribution and specific light patterns are difficult to control
Solution Approach 1:
Instead of only directing light forward through the waveguide, the scattering flanges are configured to reflect and scatter a substantial portion of light backward toward the proximate end. This inversion of the typical light propagation direction enables controlled backward light distribution and creates specific illumination patterns that would be difficult to achieve with forward-only direction.
3Illumination intensity
If simple light pipe structure is used, then manufacturing is easy, but uniform illumination and specific light patterns cannot be achieved
Solution Approach 1:
The waveguide body and scattering flanges are merged into a single integrated structure. The flanges are formed as integral parts of the waveguide body through molding or extrusion processes, eliminating the need for separate assembly steps. This merging maintains manufacturing simplicity while achieving controlled light distribution through the geometric configuration of the integrated flanges and notches.
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 waveguide effectively directs a substantial portion of light in a backward direction, enabling uniform illumination and specific light patterns, enhancing both functional and aesthetic applications in vehicles and other environments.
Implementation Method 1
The waveguide may scatter a substantial portion or even a majority of the light backwardly or in a direction opposite its initial propagation
Implementation Method 2
designed to reflect and scatter light backwardly
Data Source
AI summary
A waveguide for controlled light distribution is described. The waveguide may include a body that longitudinally extends from a proximate end to a distal end. And the body may include a plurality of scattering flanges axially extending toward the proximate end on a first longitudinal side and a plurality of notches interposed between each of the plurality of scattering flanges.