Circadian Light Fixture Dynamic Spectrum Control
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Solution Overview
Problem
Existing systems for providing circadian impact through artificial light sources are limited by their inability to dynamically adjust light intensity and spectrum in response to changing environmental conditions and user needs.
Innovation Solution
A distributed circadian model and a background circadian system are implemented to dynamically adjust light output based on real-time data from sensors, user feedback, and environmental sources, ensuring optimal circadian impact throughout the day.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed light source is used to produce a certain intensity or color of light, then the system is simple and reliable, but it cannot adapt to changes in user's circadian needs throughout the day
Solution Approach 1:
The lighting system dynamically adjusts light intensity and color temperature throughout the day based on circadian rhythms. The system transitions from cooler, brighter light in the morning to warmer, dimmer light in the evening, allowing the fixed physical infrastructure to deliver variable optical characteristics that adapt to changing user needs.
Solution Approach 2:
The system changes key parameters of the light output including intensity (lux levels) and color temperature (Kelvin) at different times of day. These parameter changes enable the same lighting fixture to provide different circadian impacts without requiring physical reconfiguration or multiple fixed sources.
2Adaptability or versatility
If multiple light sources are used to provide different circadian impacts at different times, then the system can meet varying needs, but the system complexity and cost increase
Solution Approach 1:
The lighting system is designed to perform multiple functions using a single infrastructure. The same fixtures that provide general illumination also deliver circadian-adjusted light therapy, eliminating the need for separate dedicated light sources for different times of day while maintaining adaptability to circadian needs.
Solution Approach 2:
The system merges task lighting and circadian lighting into a unified solution. By combining these functions in a single integrated lighting system, the patent avoids the complexity and cost of deploying multiple separate light sources while achieving both functional illumination and circadian rhythm regulation.
3Reliability
If the light source intensity and spectrum are adjusted dynamically, then the circadian impact is optimized, but the control system complexity increases
Solution Approach 1:
The system incorporates sensors that detect ambient light conditions and user presence, feeding this information back to the control system. This feedback mechanism allows the lighting system to automatically adjust intensity and color temperature based on real-time environmental conditions, ensuring reliable circadian impact delivery without requiring complex manual control.
Solution Approach 2:
The lighting system is designed to automatically regulate its own output based on pre-programmed circadian schedules and sensor input. The system self-adjusts without requiring user intervention or complex external control, simplifying the overall control architecture while maintaining reliability through automated circadian-rhythm-based regulation.
Data Source
AI summary
Certain examples involve a circadian effect light fixture. The circadian effect light fixture includes a controller to receive a modifying factor based on a circadian impact profile. The modifying factor includes an indication of an intensity value, a correlated color temperature value, and a color value over a range of time. The circadian effect light fixture also includes a first lighting element controlled by the controller to produce a first light output having a first intensity, a first correlated color temperature, and a first color value. Further, the circadian effect light fixture includes a second lighting element controlled by the controller to produce a second light output having a second intensity, a second correlated color temperature, and a second color value. A combined light output of the first lighting element and the second lighting element tracks the modifying factor over the range of time.