Sunlight-Mimicking LED Lighting With Visible and Infrared Control
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Solution Overview
Problem
Indoor lighting devices lack the ability to mimic the natural sunlight spectrum, which can disrupt human biorhythms due to their limited wavelength range and lack of infrared emission, affecting user health and well-being.
Innovation Solution
A light-emitting apparatus that includes visible light and infrared emitters, controlled by a processor to adjust and mimic the natural sunlight spectrum through a combination of light-emitting diodes and wavelength conversion units, with an optical sensor to sense external light and adjust emissions accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If indoor lighting devices use conventional white light sources, then the lighting is simple and energy-efficient, but the spectrum is narrow and does not mimic natural sunlight
Solution Approach 1:
The lighting device divides the spectrum into multiple segments by using separate light emitters for different wavelength ranges (visible light emitter and infrared ray emitter). Each emitter targets a specific portion of the spectrum, allowing the system to achieve comprehensive spectral coverage while maintaining manageable complexity through modular design.
Solution Approach 2:
The patent combines multiple light emitters with different spectral characteristics (visible light emitter and infrared ray emitter) into a single integrated lighting device. This merging allows the device to output a composite spectrum that mimics natural sunlight, achieving both broad spectrum coverage and functional integration.
2Reliability
If the lighting device outputs light with a narrow spectrum, then the device structure is simple, but it cannot promote human health like natural sunlight
Solution Approach 1:
The lighting device incorporates a controller that dynamically adjusts the output characteristics of the light emitters based on time of day, weather conditions, and user preferences. This dynamic control enables the device to mimic the changing spectrum of natural sunlight throughout the day, promoting human health while managing complexity through intelligent automation.
Solution Approach 2:
The device uses sensors to detect environmental conditions and user responses, providing feedback to the controller to optimize the spectral output. This feedback mechanism ensures the lighting device adapts to real-world conditions, enhancing its ability to promote health while managing control complexity through automated adjustment.
3Adaptability or versatility
If the lighting device mimics natural sunlight spectrum, then health benefits are improved, but the device complexity increases
Solution Approach 1:
The lighting device is designed to perform multiple functions: providing illumination, promoting human health through broad spectrum output, and adapting to different environmental conditions. By integrating both visible light and infrared ray emitters with coordinated control, the device achieves multi-functionality that justifies the increased complexity through versatile performance.
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 apparatus emits light with a spectrum similar to natural sunlight, promoting user health by simulating the natural light environment, including both visible and infrared components, thereby improving circadian rhythm alignment.
Implementation Method 1
a wavelength conversion unit configured to convert a wavelength range of light emitted from the light-emitting diode chip
Implementation Method 2
an optical sensor configured to sense external light, in which the controller is further configured to acquire a spectrum of the external light by communicating with the optical sensor
Data Source
AI summary
A lighting device including a first light emitter including a plurality of light sources each being configured to emit light with a different color temperature, a second light emitter including at least one light emitting structure to emit light having a different color range than that emitted from the first light emitter, a controller to adjust characteristics of light emitted from the first and second light emitters, a user interface member configured to receive input of a user and connected to the controller, and a storage medium connected to the controller, in which each of the light sources includes a light-emitting diode chip and a wavelength conversion member to convert a wavelength range of light emitted from the light-emitting diode chip, and the controller is further configured to control the first and second light emitters according to a spectrum of light stored in the storage medium.