Multimode Tunable Lighting System for Color Consistency
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Solution Overview
Problem
Traditional daylighting systems, such as solar tubes, face limitations in efficiency, light quality, and color consistency due to dynamic changes in natural light conditions, and combining them with artificial lighting sources of fixed color and temperature fails to address color differences and simulate desirable lighting profiles effectively.
Innovation Solution
A lighting system that integrates a solar tube with multimode artificial light sources, such as RGB LEDs, and environmental sensors to dynamically adjust the color and intensity of artificial light in conjunction with natural light, using a control unit to mimic desired lighting profiles and override undesirable natural light conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional daylighting systems use fixed color artificial lighting sources, then device complexity is reduced, but color consistency and lighting quality deteriorate due to dynamic changes in natural light conditions
Solution Approach 1:
The patent applies dynamics by transitioning from fixed-color artificial lighting to tunable artificial lighting sources that can dynamically adjust their color temperature and spectral composition. The system continuously adapts the artificial light characteristics to match or compensate for changing natural light conditions throughout the day, thereby maintaining consistent overall lighting quality and color appearance in the interior space.
Solution Approach 2:
The patent implements parameter changes by modifying the color temperature and spectral parameters of artificial lighting sources based on real-time measurements of natural light conditions. The system adjusts these parameters to either blend harmoniously with natural light or compensate for its deficiencies, ensuring stable lighting quality despite external environmental variations.
2Ease of manufacture
If fixed color artificial lighting is combined with natural light, then ease of manufacture is improved, but adaptability to different lighting conditions deteriorates
Solution Approach 1:
The system employs dynamic control where artificial lighting parameters are continuously adjusted in response to changing natural light conditions. Sensors monitor the spectral composition and intensity of natural light, and the control system modifies artificial light output accordingly, enabling the system to adapt to various times of day, weather conditions, and seasonal variations.
Solution Approach 2:
The patent implements feedback mechanisms where sensors continuously measure natural light characteristics and feed this information to the control system. The control system processes this data and adjusts artificial lighting parameters in real-time to achieve desired lighting profiles, creating a closed-loop system that automatically adapts to environmental changes.
3Use of energy by moving object
If natural light is used without compensation, then energy efficiency is improved, but illumination quality and color accuracy deteriorate due to natural light variability
Solution Approach 1:
The patent applies partial action by using artificial lighting only to the extent necessary to compensate for deficiencies in natural light. Rather than replacing natural light completely, the system adds targeted artificial illumination to fill spectral gaps or adjust color temperature, thereby maintaining energy efficiency while improving overall lighting quality.
Solution Approach 2:
The system dynamically changes the parameters of artificial lighting based on real-time analysis of natural light characteristics. By adjusting color temperature, intensity, and spectral composition of artificial light to complement natural light, the system maintains high illumination quality while minimizing energy consumption compared to using artificial light alone.
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 system provides consistent and desirable interior lighting by compensating for natural light variability, eliminating perceptible color differences and enhancing energy efficiency by utilizing natural light more effectively.
Implementation Method 1
multimode artificial light sources, such as RGB LEDs
Data Source
AI summary
Described herein are day lighting systems that utilize a combination of at least one natural light source with at least one multimode artificial light source. Also disclosed are methods for designing and operating such systems.