Alternating Spectral LED Layout for Visual Fatigue Reduction
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Solution Overview
Problem
Existing lighting devices lack the ability to provide lights with specific wavelengths that address visual fatigue and negative afterimages, which are common in general-purpose luminaires.
Innovation Solution
A lighting device with alternating arrangements of light emitting elements emitting in different spectral ranges, including a broader and narrower spectral range, to reduce visual fatigue and provide health care benefits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If general-purpose white lamps are used, then broad spectral coverage is achieved, but visual fatigue and negative afterimages occur
Solution Approach 1:
The lighting device segments the light source into multiple types of light emitting elements with different spectral characteristics (first, second, and third light emitting elements emitting in different spectral ranges). This segmentation allows selective activation of specific spectral components to address visual fatigue while maintaining broad spectral coverage when needed.
Solution Approach 2:
Different regions of the lighting device provide different spectral qualities. The first light emitting elements provide broad spectral coverage for general illumination, while the second and third light emitting elements provide specific narrow spectral ranges to reduce visual fatigue and negative afterimages, creating local spectral quality variations across the device.
2Reliability
If light emitting elements with different spectral ranges are integrated, then health care benefits are provided, but device complexity increases
Solution Approach 1:
The patent merges multiple types of light emitting elements (first, second, and third light emitting elements with different spectral ranges) into a single integrated lighting device. This combining approach provides multiple health care benefits simultaneously while sharing common structural components like the board and housing, thereby managing complexity.
Solution Approach 2:
The lighting device is designed with multi-functionality to provide both general illumination (via first light emitting elements) and specific health care functions (via second and third light emitting elements targeting visual fatigue and negative afterimages). This universal design allows a single device to serve multiple purposes without requiring separate specialized devices.
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 device effectively reduces negative afterimages and provides health care benefits by alternating light emitting elements with different spectral ranges, enhancing user comfort and visual health.
Implementation Method 1
a plurality of first light emitting elements and a plurality of second light emitting elements. The first light emitting elements emit lights in a first spectral range. The second light emit elements emit lights in a second spectral range.
Data Source
AI summary
A lighting device includes a board, first light emitting elements and second light emitting elements. The first light emitting elements emit lights in a first spectral range. The second light emitting elements emit lights in a second spectral range. The second spectral range is narrow than the first spectral range. The first light emitting elements are disposed in at least one first area of the board, and the second light emitting elements are disposed in second areas of the board. The at least one first area and the second areas are alternatively arranged on the board.