UV LED Therapy Apparatus Wavelength Compensation
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Solution Overview
Problem
Ultraviolet therapy apparatuses using LEDs face challenges due to manufacturing variations in peak wavelength, leading to inconsistent therapeutic effects and potential side effects, as the wavelength of light emitted by LEDs can vary from 303 nm to 313 nm, affecting the dose of ultraviolet irradiation required for effective treatment.
Innovation Solution
An ultraviolet therapy apparatus with a controller that adjusts the irradiation dose based on the degree of effect of the reference light and the actual light emitted by the LED, using a modification factor calculated from the spectral spectrum and erythema action spectrum to ensure appropriate dosing, thereby providing a modified set irradiation dose that accounts for individual LED variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If LEDs are used as light sources in ultraviolet therapy apparatus, then the apparatus can be made smaller and lighter with simpler circuit configuration, but the peak wavelength of emitted light varies due to manufacturing variations
Solution Approach 1:
The patent applies parameter changes by modifying the irradiation dose parameter based on the actual peak wavelength of each LED. The control unit adjusts the irradiation dose to account for wavelength variations, ensuring consistent therapeutic effects despite manufacturing variations in LED peak wavelengths.
2Ease of operation
If a fixed irradiation dose is used for all LEDs, then the operation is simple, but side effects may occur or therapeutic effect may be insufficient due to wavelength variations
Solution Approach 1:
The patent implements feedback by measuring the actual peak wavelength of each LED and using this information to adjust the irradiation dose. The control unit receives wavelength data from the measurement unit and automatically modifies the irradiation dose to maintain consistent therapeutic effects across different LEDs.
3Reliability
If individual LED wavelength variations are compensated, then therapeutic effect consistency is improved, but the device complexity increases due to additional measurement and control mechanisms
Solution Approach 1:
The patent replaces complex mechanical adjustment mechanisms with electronic measurement and control systems. A measurement unit optically measures the peak wavelength, and a control unit electronically adjusts the irradiation dose parameters, substituting physical adjustments with automated electronic compensation.
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
This solution ensures excellent therapeutic effects without causing side effects by adjusting the irradiation dose according to the specific LED's wavelength, ensuring consistent treatment outcomes across different LED light sources.
Implementation Method 1
an LED light source that emits light including ultraviolet light
Implementation Method 2
ultraviolet therapy that uses ultraviolet light irradiation to achieve therapeutic effects for immunosuppression
Data Source
AI summary
The ultraviolet therapy apparatus includes a light source part having an LED light source, a controller that controls lighting of the LED light source, an input unit that inputs a set irradiation dose of a therapeutic light to be applied to a patient on the assumption that a reference light is used for the therapeutic light, a storage unit that stores at least one parameter for modifying the set irradiation dose. The controller includes a modifier that modifies the set irradiation dose on the basis of the parameter stored in the storage unit, and a lighting controller that causes the LED light source to provide the modified irradiation dose. The modified irradiation dose is derived from a degree of effect of the reference light on a human body and a degree of effect on the human body caused by the ultraviolet light output from the light source part.