Light Therapy Device Control Method for Skin Surface Illumination
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Solution Overview
Problem
Conventional light therapy devices face challenges in delivering a suitable light dose to tissues under the skin surface due to light absorption, scattering, and refraction, leading to ineffective treatment with low doses or tissue damage from high doses.
Innovation Solution
A control method for light therapy devices that adjusts light intensity based on calculated appropriate ranges, considering light dose requirements, illuminated time, and light beam shape variations, with real-time monitoring to ensure the light dose received by the illuminated portion is within a safe and effective range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If light intensity is increased to ensure sufficient light dose reaches the illuminated portion, then treatment effectiveness is improved, but the risk of tissue damage increases
Solution Approach 1:
The system employs a feedback mechanism where a light receiver detects the actual light intensity at the skin surface, and the control unit adjusts the light source intensity accordingly. This closed-loop control ensures the light dose reaches the illuminated portion within the therapeutic range, maximizing treatment effectiveness while preventing tissue damage from excessive intensity.
Solution Approach 2:
The system dynamically changes the light intensity parameter based on detected skin surface conditions and calculated appropriate ranges. By adjusting the intensity parameter in real-time according to the relationship between light source intensity and skin surface illumination, the system optimizes the therapeutic effect while avoiding harmful over-exposure.
2Object-affected harmful factors
If light intensity is reduced to prevent tissue damage, then safety is improved, but treatment effectiveness deteriorates
Solution Approach 1:
The feedback mechanism ensures that even at lower intensities, the system can achieve sufficient light dose at the illuminated portion by precisely controlling the light source intensity based on actual skin surface measurements. This prevents both under-dosing (ineffective treatment) and over-dosing (tissue damage).
Solution Approach 2:
The system dynamically adjusts light intensity rather than using fixed settings. The control unit modifies the intensity in real-time based on the detected skin surface illumination and the calculated appropriate intensity range, allowing optimization of both safety and effectiveness for each specific treatment scenario.
3Device complexity
If light source intensity is controlled without considering light beam shape variation, then device complexity is reduced, but manufacturing precision of light dose delivery deteriorates
Solution Approach 1:
The system performs preliminary calculations of the appropriate light source intensity range based on the known relationship between light beam shape variation and skin surface illumination. By pre-establishing this relationship and using it to guide intensity control, the system achieves precise light dose delivery without requiring complex real-time beam shape measurement and adjustment mechanisms.
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
Ensures that the light therapy device delivers a consistent and appropriate light dose to the target area, enhancing therapeutic efficacy while minimizing the risk of tissue damage from excessive light exposure.
Implementation Method 1
the light is transmitted under the skin surface of the human body
Implementation Method 2
the light interacts with the tissue under the skin surface to absorb, scatter, refract, etc.
Implementation Method 3
the light interacts with the tissue under the skin surface to absorb, scatter, refract, etc.
Implementation Method 4
the light interacts with the tissue under the skin surface to absorb, scatter, refract, etc.
Data Source
AI summary
A control method for a light therapy device, including steps of: set a light dose range (1-4J/cm2) required by an illuminated portion under a skin surface; calculate an appropriate intensity range outputted by a light source based on the set light dose, an illuminated time, and a proportion of light beam shape variation between the light source and the skin surface; build a corresponding relation between the appropriate intensity range and an ideal illumination range for the skin surface; measure an illumination of the skin surface, and monitor an output light intensity of the light source based on the illumination, ensuring that a light intensity outputted by the light source is a set ideal light intensity whereby, a light dose transmitted from the light therapy device to the illuminated portion could be kept in the set light dose by simply controlling the illumination to be within the set illumination range.