Perimeter LED Pathway Light Eliminating Shadow Effects
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Solution Overview
Problem
Existing pathway and landscape lighting using clusters of LEDs suffers from undesirable shadow effects and uneven illumination, leading to inadequate lighting for walkers, as single LEDs emit low levels of light and cluster arrangements result in harsh brightness variations.
Innovation Solution
The use of perimeter spaced apart LED light sources, arranged in configurations such as triangular, square, or hexagonal patterns around a disc-shaped mount, with a central LED and an optical fiber ring to direct light evenly across a 360-degree surface, eliminating shadow effects and providing uniform illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a cluster of closely spaced LEDs is used as a central light source, then the light output intensity is increased, but shadow effects and uneven illumination are created on the ground surface
Solution Approach 1:
The invention divides the light source into multiple individual LEDs arranged in a perimeter configuration around a central axis, rather than using a single clustered source. This segmentation allows each LED to illuminate a specific sector, collectively providing uniform 360-degree coverage without the shadow effects caused by clustered arrangements
Solution Approach 2:
The invention transitions from a two-dimensional clustered arrangement to a three-dimensional perimeter configuration with LEDs positioned at equal spacings around a central axis, creating a ring-like structure that directs light downward in a uniform pattern across the ground surface
2Device complexity
If a single LED is used as a light source, then the device complexity is reduced, but the light output level is insufficient for adequate pathway illumination
Solution Approach 1:
The invention uses multiple individual LEDs positioned around a perimeter, each contributing to the overall illumination. This segmented approach increases total light output while maintaining relatively simple individual LED components and their mounting structures
Solution Approach 2:
The invention combines multiple LED light sources into a unified perimeter configuration that works together to provide comprehensive illumination. The LEDs are positioned and oriented to create a collective lighting effect that covers the entire ground area uniformly
3Object-affected harmful factors
If perimeter spaced apart LEDs are used, then uniform illumination without shadow effects is achieved, but the device complexity increases compared to cluster arrangements
Solution Approach 1:
The invention positions LEDs at specific equal spacings around a central axis, creating an asymmetric yet balanced perimeter configuration. This arrangement optimizes light distribution to eliminate shadows while maintaining structural simplicity through regular spacing patterns
Solution Approach 2:
The invention arranges LEDs in a three-dimensional perimeter configuration around a central axis, directing light downward at specific angles. This spatial arrangement eliminates shadow effects by distributing light sources around the entire perimeter, achieving uniform illumination without proportionally increasing complexity
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 configuration ensures softer, more uniform light emissions, providing adequate illumination across a wider area without dark spots, enhancing visibility and aesthetic appeal while maintaining or exceeding the light output of cluster-based systems.
Implementation Method 1
an optical fiber ring to direct light evenly across a 360-degree surface
Implementation Method 2
LED (light emitting diode) light sources
Data Source
AI summary
Pathway and landscape lights, in particular to devices, apparatus, systems and methods of using ground directed pathway and landscape lights with a single or perimeter spaced apart LED (light emitting diode) light sources on a disc mount, with or without an optical fiber arranged in a ring pattern about a perimeter edge of the mount. A light shade lens can have an upper end attached to the lower face of the disc mount, and a bottom end attached to a ground engaging post, so the light emitted from the mount is directed in a 360 degree outwardly expanding direction expanding outward on the ground surface where the ground engaging post is in the center of the 360 degree expanding illumination. A low voltage power source can be used. Alternatively, the light can be solar powered. The light forms uniform light beam emissions without shadow spots effects.