Custom Spectral Power Distribution Optimization for Lighting Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current lighting systems face challenges in optimizing energy efficiency and spectral distribution to meet specific requirements such as color quality, luminous efficacy, and ambient light management, which are not adequately addressed by existing technologies.
Innovation Solution
A method for determining a custom spectral power distribution (PSD) by optimizing an evaluation function using a non-linear optimization routine, considering constraints like correlated color temperature and color rendering index, to achieve desired lighting outputs such as maximum color gamut, minimal impact on fine arts, or optimized use in environments like clean rooms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional lighting systems are used, then general illumination is provided, but energy efficiency and spectral distribution cannot be optimized for specific requirements
Solution Approach 1:
The patent segments the spectrum into multiple wavelength bands (e.g., blue, cyan, green, yellow-green, yellow, orange, red) and controls each band independently using separate LED channels. This allows selective optimization of energy distribution across different spectral regions to match specific application requirements while maintaining overall energy efficiency
Solution Approach 2:
The system dynamically adjusts the spectral power distribution by varying the intensity of individual LED channels in real-time based on optimization criteria such as color quality, luminous efficacy, and ambient light conditions. This dynamic control enables the lighting system to adapt to different applications and environmental conditions
2Manufacturing precision
If customized spectral distributions are designed to satisfy color quality and luminous efficacy, then lighting performance is improved, but system complexity increases
Solution Approach 1:
The patent employs a multi-functional optimization framework that simultaneously evaluates multiple criteria (color quality, luminous efficacy, energy consumption, ambient light conditions) using a unified evaluation function. This allows the system to achieve precise color quality control while maintaining manageable system complexity through integrated optimization
3Productivity
If sophisticated sensors and algorithms are implemented to control light intensity, then light management is optimized, but device complexity and cost increase
Solution Approach 1:
The system incorporates ambient light sensors and occupancy sensors that automatically detect environmental conditions and trigger appropriate lighting adjustments without requiring complex external control systems. The optimization algorithms automatically process sensor data and adjust spectral distribution based on detected conditions, enabling self-managing light optimization
Data Source
AI summary
A method for determining a custom power spectral distribution (PSD) for use in a specialized light source and a lighting system. The method includes obtaining a PSD corresponding to light that is output by the lighting system, obtaining a constraint, and determining the custom PSD by optimizing (minimizing or maximizing), subject to the constraint, an evaluation function comprising the PSD, an unwanted light function, a wanted light function, or another characteristic function.