Non-coherent pulsed light control via spectral modulation
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Solution Overview
Problem
Current light therapy systems face challenges in effectively controlling non-coherent pulsed light delivery, particularly in differentiating between target and surrounding tissues, especially in dark skin types and deep dermal targets, which affects treatment safety and efficacy.
Innovation Solution
A system comprising a lamp, power supply, capacitor, current modulator, and controller unit that modulates energy flow and spectral distribution of non-coherent pulsed light, allowing for customizable pulse parameters and multiple modes of operation within a pulse to optimize light delivery based on target specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional light therapy systems use non-coherent pulsed light, then the treatment can be applied to various skin types and targets, but the system cannot effectively differentiate between target and surrounding tissues, reducing treatment safety and efficacy
Solution Approach 1:
The light pulse is divided into multiple sub-pulses with different spectral characteristics. The system segments the broad spectrum light into specific wavelength bands using interchangeable filters, allowing selective targeting of different tissue chromophores at different times within the pulse duration, thereby enabling differentiation between target and surrounding tissues
Solution Approach 2:
The system dynamically changes spectral distribution during the pulse by switching between different filters and adjusting light intensity in real-time. The controller modulates the lamp current and filter selection based on pre-programmed treatment protocols, creating time-varying spectral profiles that adapt to different tissue layers and targets
2Productivity
If the light intensity is increased to improve treatment efficacy on dark skin types and deep dermal targets, then the treatment effectiveness improves, but the risk of damaging surrounding tissues increases
Solution Approach 1:
The system applies different spectral qualities to different time segments within the pulse. By using multiple filters with specific wavelength transmissions and adjusting intensity at different sub-pulse stages, the treatment delivers targeted energy to specific tissue depths and chromophores while minimizing exposure of surrounding tissues to harmful wavelengths
Solution Approach 2:
The treatment uses periodic pulsing with multiple sub-pulses, each having different spectral characteristics. The intermittent nature of pulsed light delivery allows thermal diffusion control, and the varying spectral content of successive sub-pulses enables staged heating of different tissue layers, improving effectiveness while limiting cumulative damage to surrounding areas
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
Enhances the safety and efficacy of light treatments by precisely controlling light intensity and spectral distribution, enabling effective treatment of targets with physical properties similar to or different from surrounding tissues, including hair removal, blood vessel modification, and textural lesions.
Implementation Method 1
a lamp to produce non-coherent light energy in a pulsed mode, a power supply to provide energy to the system, a capacitor to generate current in the lamp
Implementation Method 2
a current modulator to modulate energy flow between the power supply and the lamp
Implementation Method 3
based on illumination data received from the light sensor, sensing the light output from the target
Data Source
AI summary
A system and method to control non-coherent pulsed light, the system including a lamp to produce non-coherent light energy in a pulsed mode, a current supply to provide energy to the system, and a switching module to control the spectral distribution and/or light intensity in the non-coherent pulsed light energy during a pulse of non-coherent light. The system may include a controller unit to control pulse parameters for a selected treatment, based on illumination data received from the light sensor. The system may include one or more changeable filters to modulate the pulses supplied to the lamp during a pulse.