Lighting Panel Uniformity via Segmented LED Subsets
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Solution Overview
Problem
Existing LED lighting panels face challenges in achieving uniform light distribution across large areas without compromising acoustic dampening, leading to aesthetically and functionally inefficient non-uniformity.
Innovation Solution
The use of two subsets of solid-state lighting elements with different light intensity profiles, strategically arranged and adapted to generate beam profiles against a reflector structure, which are then blended to create a uniform light intensity distribution across the panel's output area, combined with an acoustically absorptive tile layer for effective sound dampening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single array of LED elements is used in a lighting panel, then the device complexity is reduced, but the light distribution uniformity across large areas deteriorates
Solution Approach 1:
The LED array is divided into multiple subsets (first subset and second subset) with different intensity profiles. Each subset contributes differently to the overall light distribution, allowing the combination to achieve uniformity across large panel areas while maintaining manageable device complexity.
Solution Approach 2:
Different subsets of LED elements are assigned different local intensity characteristics. The first subset creates a first light intensity profile while the second subset creates a second light intensity profile, with each subset optimized for specific regions or patterns to achieve overall uniformity when combined.
2Illumination intensity
If multiple subsets of LED elements with different intensity profiles are used, then the light distribution uniformity is improved, but the device complexity increases
Solution Approach 1:
The LED array is segmented into multiple subsets with distinct intensity profiles. This segmentation allows each subset to be independently optimized and controlled, achieving uniform light distribution across large areas while maintaining manageable complexity through modular organization.
Solution Approach 2:
Multiple subsets with different intensity profiles are merged into a single lighting panel system. The combination of these subsets produces a composite light distribution that achieves uniformity across large panel areas, with the merging strategy carefully designed to balance performance improvement against increased device complexity.
3Area of moving object
If LED elements are arranged in arrays beneath a reflector, then the light output area is increased, but the light intensity uniformity across the window deteriorates
Solution Approach 1:
Different subsets of LED elements are assigned different local intensity characteristics. The first subset creates a first light intensity profile while the second subset creates a second light intensity profile, with each subset optimized for specific regions to achieve overall uniformity when combined across the expanded output area.
Solution Approach 2:
The intensity profiles of different LED subsets are varied to compensate for the non-uniform light distribution that naturally occurs when LED arrays are placed beneath reflectors. By changing the intensity parameters of different subsets, uniformity is achieved across the expanded light output area.
4Object-affected harmful factors
If acoustic dampening elements are incorporated into lighting panels, then the acoustic insulation is improved, but the light distribution uniformity deteriorates
Solution Approach 1:
The LED array is divided into multiple subsets with different intensity profiles, allowing the lighting system to achieve uniform light distribution even when acoustic dampening elements are present. This segmentation enables compensation for the non-uniform light distribution caused by acoustic tiles or layers.
Solution Approach 2:
The intensity profiles of different LED subsets are adjusted to compensate for the light distribution non-uniformity introduced by acoustic dampening elements. By changing the intensity parameters strategically, uniformity is restored while maintaining the acoustic insulation functionality.
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 approach ensures a homogeneous light output across the panel's width and length, maintaining acoustic insulation while covering large ceiling areas with seamless aesthetic and functional uniformity.
Implementation Method 1
a reflector structure, having a reflective surface facing at least in part in the direction of the light output area
Implementation Method 2
it is often desirable that lighting panels themselves incorporate acoustically absorbing tiles or layers
Data Source
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AI summary
The invention provides a lighting panel, for use for example within a modular surface system, comprising one or more strips of solid state lighting elements associated with a reflector structure. The lighting panel is adapted for improved uniformity of light intensity across the width of its output area. Lighting elements comprise two or more subsets, each subset adapted to collectively generate a different light intensity profile across the width of the panel output window. The subsets are selectively adapted to generate profiles which, when blended, mutually offset one another's deviations from some common mean intensity across the width of the output window, thereby generating a combined intensity profile of improved uniformity. Embodiments include arrangements in which subsets of lighting elements are adapted to have differing actual or virtual optical path lengths to the reflector surface. Also provided are embodiments further comprising an acoustically absorbing back surface, for providing an acoustic dampening function.