Sunlight-Spectrum LED Lighting With Visible and Infrared Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Indoor lighting devices fail to replicate the natural spectrum of sunlight, which can affect human biorhythms and overall health due to the absence of a wide wavelength range of light output.
Innovation Solution
A light-emitting apparatus comprising a controller that adjusts visible and infrared light emitters using light-emitting diodes and wavelength conversion units to mimic the spectrum of external light, with optional user control and feedback mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If indoor lighting devices use conventional white light sources, then the lighting device can provide sufficient illumination, but the spectrum is limited and does not replicate natural sunlight, affecting human health and biorhythms
Solution Approach 1:
The lighting device divides the spectrum into multiple wavelength ranges (blue, cyan, green, yellow-green, yellow, orange, red, and infrared) using separate light sources including LEDs and fluorescent lamps. Each light source targets a specific wavelength range, allowing precise spectral control while maintaining overall illumination intensity.
Solution Approach 2:
The device combines multiple types of light sources (LEDs with different wavelengths, fluorescent lamps, and infrared lamps) to create a composite light output that replicates the full spectrum of natural sunlight. This composite approach enables simultaneous achievement of sufficient illumination and comprehensive spectrum distribution.
2Adaptability or versatility
If the lighting device outputs light with a wide spectrum similar to sunlight, then the light looks natural and promotes health, but the device complexity increases due to multiple light sources and control mechanisms
Solution Approach 1:
The control unit serves multiple functions: it controls the intensity of each light source, adjusts the spectral distribution to match natural sunlight, and coordinates the operation of different light sources. This multi-functionality reduces the need for separate control mechanisms for each light source, thereby managing device complexity.
Solution Approach 2:
The device incorporates a sensor to detect the spectral distribution of the light output and feeds this information back to the control unit. The control unit then adjusts the intensity of each light source based on this feedback to maintain optimal spectral distribution, simplifying the control process through automated regulation.
3Adaptability or versatility
If the lighting device uses multiple light sources with different color temperatures, then the spectrum coverage is improved, but the manufacturing complexity and cost increase
Solution Approach 1:
The manufacturing process is segmented into modular units where each light source (LED module, fluorescent lamp, infrared lamp) can be independently manufactured and tested before assembly. This modular approach simplifies manufacturing by allowing parallel production and quality control of individual components.
Solution Approach 2:
The device allows for adjustable parameters including the intensity of each light source and the spectral distribution characteristics. These parameters can be modified during manufacturing or through software control, reducing the need for complex custom manufacturing for different spectral requirements and simplifying production processes.
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 sunlight, promoting a natural environment and potentially enhancing user health by simulating the effects of natural sunlight.
Implementation Method 1
a wavelength conversion unit configured to convert a wavelength range of light emitted from the light-emitting diode chip
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.