Lighting Arrangements for Uniform Angular Light Distribution
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Solution Overview
Problem
Conventional lighting systems suffer from non-uniform angular light distribution, leading to visual discomfort, inefficient energy usage, and environmental issues due to the lack of effective optical elements that can smooth out light intensity variations and direct light efficiently.
Innovation Solution
An optical arrangement featuring a reflective layer and optically transmissive materials with scattering properties, combined with a housing that encloses the light sources and optical elements, to achieve uniform angular light distribution by refracting and reflecting light in a controlled manner, reducing glare and energy wastage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional lighting systems use high-intensity discharge lamps fixed at given positions, then illumination coverage is achieved, but non-uniform angular light distribution occurs leading to visual discomfort and glare
Solution Approach 1:
The patent introduces optical elements (lenses, diffusers, reflectors) as intermediary components between the light source and the environment. These intermediaries modify the light propagation paths, transforming the non-uniform angular distribution from fixed-position lamps into uniform omnidirectional illumination, thereby eliminating glare and visual discomfort while maintaining illumination coverage
2Illumination intensity
If multiple small lighting devices are deployed to overcome non-uniform distribution, then light distribution uniformity improves, but installation and maintenance costs increase along with energy wastage
Solution Approach 1:
The patent combines multiple lighting functions into a single integrated device. By incorporating optical elements that enable omnidirectional uniform light distribution within one lighting unit, the system eliminates the need for multiple separate devices, thereby reducing installation complexity, maintenance requirements, and associated costs while achieving uniform illumination
3Ease of operation
If conventional optical elements are used to alter light propagation, then some light direction control is achieved, but high-intensity spots and low-intensity spots persist along with color banding
Solution Approach 1:
The patent employs optical elements with specifically engineered parameters - including refractive indices, curvature radii, thickness profiles, and surface microstructures - that are optimized to achieve complete omnidirectional uniform light distribution. These parameter optimizations enable the system to control light direction while simultaneously eliminating intensity variations and color banding effects
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 compact, durable, and aesthetically appealing lighting assembly that enhances light distribution uniformity, reduces visual discomfort, and improves energy efficiency by directing light more effectively into desired areas.
Implementation Method 1
The optical element 102 comprises a first portion 104 having an input face 109 and an output face 110... light emitted from the light source 108 enters the first portion 104... to provide an improved angular light distribution
Implementation Method 2
one or more optical elements employed in the conventional lighting devices receives light from a light source having particular characteristics defined by the properties of the light source and then alter the light propagating through the optical element
Data Source
AI summary
Disclosed are lighting arrangements that provide, when in operation, more uniform angular light distribution emissions into an environment. The lighting arrangements use LED light sources, a light scattering optical element and partial reflectance from a light transmissive sheet or reflective layer to produce direct and indirect illumination with improved angular light distribution and uniformity onto targeted illumination surfaces such as ceilings, walls, and floors. The present disclosure provides a solution to problems of non-uniform angular distribution of light causing visual discomfort and spatial discontinuity in output. Energy savings are achieved with high optical efficiency utilizing compact, durable, robust, and aesthetically appealing optical composites and lighting arrangements capable of providing an assortment of configurable angular light distributions.