Light Fixture Output Control via Spectral Feedback
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Solution Overview
Problem
Light fixtures of different types and ages produce inconsistent light outputs, affecting the appearance and reflection of light in applications like theatre lighting, where precise color and brightness control is crucial.
Innovation Solution
A system and method for controlling multiple light fixtures by detecting and analyzing their outputs and reflections, calculating updates to match desired colors, brightness, and spectra, and adjusting light source values to ensure consistent output across fixtures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple light fixtures of different types and ages are used, then the system can provide greater versatility and adaptability, but the light output consistency and color accuracy deteriorate
Solution Approach 1:
The system measures the actual light output parameters (color, brightness, spectrum) of each light fixture and adjusts control settings to compensate for variations. This allows different types and ages of fixtures to be integrated while maintaining consistent appearance output.
Solution Approach 2:
The system continuously measures the actual light output of each fixture and uses this feedback to dynamically adjust control signals, ensuring that variations in fixture characteristics do not result in visible inconsistencies in the final lighting effect.
2Ease of operation
If light fixtures are not regularly calibrated, then the system operation is simpler, but the color accuracy and brightness consistency deteriorate over time due to aging
Solution Approach 1:
The system performs automatic calibration measurements at scheduled intervals or before productions, proactively detecting and compensating for aging effects before they result in visible degradation of light output quality.
Solution Approach 2:
The system continuously monitors light output characteristics and automatically adjusts control parameters to compensate for aging, eliminating the need for manual recalibration while maintaining color accuracy and brightness consistency.
3Manufacturing precision
If manual calibration of each light fixture is performed, then the light output consistency can be improved, but the time and complexity of setup increases
Solution Approach 1:
The system automatically measures the light output characteristics of each fixture and generates appropriate control settings without requiring manual intervention, significantly reducing calibration time while achieving consistent results across all fixtures.
Solution Approach 2:
The automated measurement and adjustment process uses real-time feedback from light sensors to determine optimal control settings for each fixture, eliminating the need for time-consuming manual calibration while ensuring consistent light output.
4Measurement precision
If the system compensates for surface reflections and aging effects, then the light reflection accuracy improves, but the measurement and control complexity increases
Solution Approach 1:
The system uses intermediate measurement devices (light sensors, spectrometers) to objectively quantify light output characteristics and surface reflection effects, translating complex physical phenomena into measurable data that can be processed and compensated through software algorithms.
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 ensures consistent and accurate light output among multiple light fixtures, compensating for age-related changes and surface reflections, thereby maintaining optimal lighting effects in sensitive applications.
Implementation Method 1
detecting a first light output of a first light fixture, detecting a second light output of a second light fixture, and detecting a first reflection of light from a surface
Data Source
AI summary
A method of controlling a plurality of light fixtures. The method includes determining first light outputs for each of the plurality of light fixtures. The method also includes determining a first spectrum of light reflected off of a surface. The method further includes determining a first difference between the first light outputs and desired light outputs for each of the plurality of light fixtures. The method also includes determining a second difference between the first spectrum of light reflected off of the surface and a desired spectrum of light reflected off of the surface. The method further includes calculating an updated output spectrum for the plurality of light fixtures based at least in part on the first difference and the second difference. The method also includes determining a second set of light source output values based at least in part on the updated output spectrum.