Polygonal Beam Reflector with Constrictions for Uniform Illumination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional rectangular reflectors suffer from low efficiency due to multiple reflections at corners, leading to reduced light intensity in corner areas of the beam.
Innovation Solution
A calyx-shaped reflector with channel-shaped shell segments and constrictions eliminates corners by using convex, inwardly projecting constrictions, ensuring direct and indirect rays have the same break-off angles, reducing multiple reflections and enhancing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional rectangular reflectors are used to generate a polygonal beam, then the desired rectangular or square light distribution is achieved, but multiple reflections occur at the corners leading to low efficiency and reduced light intensity
Solution Approach 1:
The reflector is divided into multiple channel-shaped shell segments that are arranged adjacently to form the complete reflector. Each segment is independently contoured and optimized, with constrictions at the boundaries preventing corner multiple reflections. This segmentation allows the reflector to achieve polygonal beam shaping while avoiding the efficiency losses associated with conventional corner designs.
2Productivity
If rectangular reflectors with parallel flanks are used, then a rectangular beam is produced, but corner areas experience multiple reflections that reduce efficiency and light intensity
Solution Approach 1:
The reflector shell segments feature asymmetric contoured surfaces with constrictions at the boundaries. These constrictions create an asymmetric geometry that prevents light rays from undergoing multiple reflections in the corner areas, thereby improving overall efficiency and maintaining high light intensity in corner regions of the beam.
3Shape
If conventional reflector designs are used, then polygonal radiation break is achieved, but uniform light distribution is compromised due to light/dark rings and non-uniform illumination
Solution Approach 1:
Different regions of the reflector shell segments are given different local qualities through their contoured surfaces. The constrictions at segment boundaries and the specific curvature profiles of each segment are locally optimized to control light reflection patterns, ensuring that direct and indirect rays achieve the same break-off angles and producing uniform light distribution without visible light/dark rings.
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
This design achieves a uniform, high-efficiency light distribution with a polygonal beam, such as rectangular or square, without light/dark rings, ensuring even illumination across the irradiated area.
Implementation Method 1
a reflector which captures the light emitted by the light source and emits a beam of rays
Data Source
Figure 1
Figure 2(a)~2(c)
Figure 3
AI summary
The present invention relates to a luminaire with at least one light source and a reflector that captures light emitted by the light source and emits a beam of light with a polygonal cross-section, in particular approximately rectangular. The invention further relates to a luminaire system with a plurality of such luminaires, and a reflector for such a luminaire. According to the invention, the reflector has a chalice-shaped reflector body with several constrictions, between which concave, arcuately contoured reflector shell segments are provided, wherein the reflector body and its reflector shell segments are contoured such that the indirect rays reflected by the reflector body and the direct rays emitted directly past the reflector by the light source have essentially the same angles of incidence.