Multilayer Diffuser Encapsulation for Homogeneous Lateral Emission
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Solution Overview
Problem
Current illumination systems for medical therapies face challenges in achieving homogeneous lateral emission with high efficiency, as they often experience back-scattering effects that can lead to unstable light sources and undesired temperature rises due to hotspots, compromising treatment effectiveness.
Innovation Solution
The proposed illumination system incorporates a diffuser base body with a matrix and scattering elements enclosed by a solid encapsulation comprising multiple encapsulating tubes or layers, which are designed to minimize back-scattering by using a multilayer structure with different optical properties, ensuring that scattered light is effectively directed laterally and reducing the risk of hotspots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a diffuser element with scattering elements is used to achieve homogeneous lateral emission, then illumination homogeneity is improved, but back-scattering effects increase causing light source instability and hotspot formation
Solution Approach 1:
The encapsulation is divided into multiple segments or layers (first encapsulation layer, second encapsulation layer, etc.), each with different optical properties. This segmentation allows the system to simultaneously achieve homogeneous lateral emission while controlling back-scattering, as each layer can be optimized for specific functions - some layers promote lateral scattering while others minimize back-scattering to the light source.
Solution Approach 2:
Different regions of the encapsulation are assigned different optical qualities - the first encapsulation layer has specific scattering properties for lateral emission, while the second encapsulation layer has different properties to control back-scattering. This local differentiation of optical properties enables simultaneous optimization of both lateral homogeneity and light source stability.
2Illumination intensity
If scattering elements are introduced to improve lateral emission homogeneity, then illumination uniformity is improved, but temperature rise due to hotspots increases
Solution Approach 1:
The encapsulation is divided into multiple segments or layers (first encapsulation layer, second encapsulation layer, etc.), each with different optical properties. This segmentation allows the system to simultaneously achieve homogeneous lateral emission while controlling back-scattering, as each layer can be optimized for specific functions - some layers promote lateral scattering while others minimize back-scattering to the light source.
Solution Approach 2:
The patent converts the potentially harmful back-scattering effect into a beneficial control mechanism by using specific encapsulation layers to manage the scattered light. Instead of allowing random back-scattering to create hotspots, the encapsulation structure directs and controls the scattering process, transforming what would be a harmful thermal effect into a controlled optical management system that maintains temperature stability.
3Device complexity
If a simple single-layer encapsulation is used, then device complexity is reduced, but back-scattering control and emission homogeneity are insufficient
Solution Approach 1:
The encapsulation is divided into multiple segments or layers (first encapsulation layer, second encapsulation layer, etc.), each with different optical properties. This segmentation allows the system to simultaneously achieve homogeneous lateral emission while controlling back-scattering, as each layer can be optimized for specific functions - some layers promote lateral scattering while others minimize back-scattering to the light source.
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 configuration achieves a highly homogeneous lateral emission with minimal deviation from average intensity, significantly reducing back-scattering and hotspot formation, thereby enhancing treatment reliability and safety by maintaining light source stability and preventing unwanted heating.
Implementation Method 1
The diffuser base body (43) comprises a matrix (43.4) having at least one scattering element (43.6)
Implementation Method 2
the solid encapsulation is configured with a multipart or multilayer structure comprising at least two encapsulating tubes or layers
Data Source
AI summary
An illumination system for a medical technology therapy and/or diagnosis system is provided. The system includes a light source, preferably a laser light source, and a light guide, which at a proximal end can be connected to the at least one light source and/or can be assigned thereto, and which system has at the distal end of the light guide a diffuser element having a longitudinal axis which extends into or in the diffuser element perpendicularly with respect to an input face of the light guide, wherein the diffuser element emits light laterally with respect to the longitudinal axis over its active length in the operating state, wherein the diffuser element has at least one diffuser base body and the diffuser base body contains a matrix that has at least one scattering element and is enclosed at least on its cladding surface by a solid encapsulation.