LED Lighting Apparatus with Spatially Segmented Color Zones
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Aging affects human visual performance, leading to reduced transmittance of the crystalline lens and intraocular scattering, which complicates tasks for older individuals, requiring lighting solutions that enhance readability and color perception while minimizing glare.
Innovation Solution
A lighting apparatus with first and second light emitting elements, having chromaticity values in the same range, are dispersedly disposed in a predetermined region, with higher density in the center for second elements and periphery for first elements, controlled by a circuit to adjust light emission based on user age, ensuring bright, high-color-rendering light over a wide area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If high color temperature lighting is used to compensate for reduced crystalline lens transmittance in older people, then blue light reaching the retina increases, but intraocular scattering increases causing glare
Solution Approach 1:
The lighting apparatus segments the light spectrum by using multiple LED types with different spectral characteristics (high color temperature LEDs for blue light, low color temperature LEDs for other wavelengths) to deliver targeted wavelengths that compensate for age-related transmittance loss without excessive blue light that causes scattering
Solution Approach 2:
The patent applies local quality by adjusting the spectral composition of light based on the specific needs of the illumination task and the age of users, optimizing the balance between compensating for lens transmittance reduction and minimizing intraocular scattering effects
2Loss of information
If blue light components are intensified to improve color perception, then color saturation increases, but glare and discomfort increase
Solution Approach 1:
The lighting system segments color delivery by using high color temperature LEDs specifically for enhancing blue light perception in tasks requiring color discrimination, while using low color temperature LEDs for general illumination to maintain comfort and reduce glare
Solution Approach 2:
The control circuit dynamically adjusts the mixing ratio of high and low color temperature LED outputs based on the specific visual task, user age, and ambient conditions, optimizing color perception while minimizing glare effects
3Area of stationary object
If uniform light distribution is used to illuminate wide areas, then coverage increases, but readability and color saturation in specific task areas decrease
Solution Approach 1:
The patent applies local quality by creating distinct illumination zones: a central task area with optimized spectral composition for high readability and color saturation, and peripheral areas with broader coverage, achieved through strategic LED placement and control
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 prevents lower readability and color saturation for older individuals, providing brighter light over a wide area and reducing discomfort, while maintaining high color perception and contrast sensitivity.
Implementation Method 1
first light emitting elements; second light emitting elements having chromaticity values in a same chromaticity range as the first light emitting elements
Data Source
AI summary
A lighting apparatus includes first light emitting elements and second light emitting elements, and a control circuit. The first light emitting elements the second light emitting elements are dispersedly disposed in a predetermined region. The first light emitting elements are more densely disposed in a periphery portion than in a center portion of the predetermined region. The second light emitting elements are more densely disposed in the center portion than in the periphery portion of the predetermined region.