Wavelength Converter Insulation Layer for Damage Detection
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Solution Overview
Problem
Conventional LARP light sources face issues with high thermal loading, mechanical damage, and unreliable monitoring of converter integrity, leading to potential safety hazards and inefficiencies in light conversion.
Innovation Solution
A wavelength converter design featuring a converter layer with an electrically insulating layer, a lateral conductor track, and solder connection volumes allows for reliable detection of damage by monitoring changes in electrical properties, enhancing robustness and preventing moisture ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a mirror is fitted at the rear side of the converter to reflect light back and improve conversion efficiency, then conversion efficiency is improved, but thermal loading increases and mechanical damage risk increases
Solution Approach 1:
An electrically insulating layer is introduced between the converter layer and the mirror as an intermediary element. This layer serves as a thermal buffer that reduces heat transfer to the mirror while maintaining optical functionality, thereby improving converter reliability without sacrificing conversion efficiency
Solution Approach 2:
The converter assembly is segmented into distinct functional layers: the converter layer, the electrically insulating layer, and the mirror. This segmentation allows each component to perform its specific function independently, with the insulating layer protecting the mirror from thermal damage while the mirror provides optical feedback
2Difficulty of detecting and measuring
If monitoring of converter integrity is implemented by measuring light ratios, then damage detection capability is improved, but reliability of monitoring decreases
Solution Approach 1:
The optical monitoring system is replaced with an electrical monitoring system. Electrical properties (conductivity, resistance, capacitance) are measured instead of light ratios, providing more reliable and direct detection of converter damage through the insulating layer's electrical characteristics
Solution Approach 2:
The electrically insulating layer serves as a mediator that enables electrical monitoring of the converter's integrity. By measuring electrical properties through this layer, the system can detect damage without relying on optical measurements, improving monitoring reliability
3Object-affected harmful factors
If beam traps are used to block reflected primary light, then safety is improved, but device complexity and space requirements increase
Solution Approach 1:
The electrically insulating layer, originally intended for thermal protection, also serves to block harmful primary light from reaching the mirror and being reflected back. This converts a thermal protection element into a dual-function component that also addresses light safety, eliminating the need for separate beam traps
Solution Approach 2:
The electrically insulating layer is designed to perform multiple functions simultaneously: thermal insulation, electrical monitoring enablement, and harmful light blocking. This multi-functionality reduces device complexity by eliminating the need for separate safety components like beam traps
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 solution enables early detection of converter layer damage, ensuring robustness and preventing safety hazards while maintaining compact design and high conversion efficiency.
Implementation Method 1
a converter layer for converting primary light of a first spectral composition into secondary light of a second spectral composition
Implementation Method 2
a mirror reflects light emerging from the rear side of the converter back into the converter
Data Source
AI summary
A wavelength converter includes a converter layer for at least partly converting primary light of a first spectral composition into secondary light of a second spectral composition, an electrically insulating first insulation layer arranged below the converter layer, a mirror being arranged at the front side of said insulation layer facing the converter layer, at least one conductor track which is arranged at the first insulation layer and which extends laterally at a distance from the mirror, mutually spaced apart contacts extending through the first insulation layer, of which contacts in each case at least two contacts electrically connect a conductor track to a rear side of the first insulation layer, and mutually spaced apart electrically conductive solder connection volumes arranged below the first insulation layer, said solder connection volumes being electrically connected in each case to one of the contacts.