Signaler Segment Fluting Structure for Uniform Illumination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional signalers with localized light sources in segments create bright spots and uneven illumination, making the visual signals less clear and recognizable.
Innovation Solution
A diffuser with an inhomogeneously structured inner side, featuring alternating notches and steps on its lateral face, reflects light rays anisotropically to distribute light uniformly across the interior, ensuring homogeneous overall illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a localized light source is used in the segment, then the signaling element can be compact and energy-efficient, but the illumination becomes uneven with bright spots and dark areas
Solution Approach 1:
The diffuser inner side is equipped with optically active structures (protrusions and recesses) that create local variations in light reflection and scattering. These localized optical features redirect light from the central source to illuminate peripheral regions more effectively, transforming the uniform light source into a spatially differentiated illumination pattern that achieves overall uniformity.
Solution Approach 2:
The diffuser acts as an intermediary element between the localized light source and the viewing window. Its structured inner surface mediates the light distribution by scattering and redirecting light rays, converting the concentrated light from the LED into a homogeneous illumination pattern across the entire viewing area.
2Ease of manufacture
If a smooth inner side is used in the diffuser, then the manufacturing is simpler, but the light distribution is uneven with visible bright spots
Solution Approach 1:
The inner surface geometry is modified by introducing protrusions and recesses with specific dimensional parameters. These geometric variations change the optical parameters of the diffuser, enabling controlled light scattering and redirection. The structured surface creates multiple reflection and refraction paths that distribute light uniformly while remaining compatible with standard manufacturing processes like injection molding.
3Area of moving object
If the light source emission surface is small relative to the viewing window area, then the signaling element can be compact, but the surrounding areas receive insufficient illumination
Solution Approach 1:
The solution addresses the two-dimensional light distribution problem by introducing three-dimensional optical structures (protrusions and recesses) on the diffuser inner surface. These volumetric features create additional light paths and reflection surfaces that redirect light from the central emission point to the peripheral regions, effectively utilizing the third dimension to solve the light distribution challenge.
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 provides a more uniform and pronounced visual signaling by evenly illuminating both central and peripheral regions, enhancing the clarity and visibility of the signal.
Implementation Method 1
A diffuser with an inhomogeneously structured inner side, featuring alternating notches and steps on its lateral face, reflects light rays anisotropically to distribute light uniformly across the interior
Data Source
AI summary
A segment(S) for a visual signaler is proposed, in which the inner side (3) of the lateral face (2) is shaped in such a way in relation to its surface that it has a fluting structure with a sequence of at least two notches (12) in each of the first and second illumination regions (AB1, AB1), wherein the sequence of troughs and peaks alternates along the line of curvature of the lateral face (2) while the troughs and/or peaks are arranged in a straight line parallel to the lateral face (2) and/or substantially perpendicular, preferably completely perpendicular to the line of curvature along the inner side (3) of the lateral face (2). For improved signaling, at least two of the notches (12) in one of the illumination regions (AB1, AB2) have geometrically different designs.