Emitter Reflector Structure With Compressed Quartz Glass Layer
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Solution Overview
Problem
Optical emitter components with gold reflectors face limitations in temperature resistance and reflectivity, especially in the UV range, leading to reduced efficiency and increased emission losses.
Innovation Solution
A method involving a multi-layer reflector structure with an inner diffusely reflecting opaque glass layer and an outer mirror-reflective metal layer, where the opaque glass layer is compressed to create a sealed surface for improved adhesion and reflectivity, reducing secondary radiation emission and enhancing optical power density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a gold reflector layer is used, then high reflectivity is achieved, but temperature resistance and thermal shock resistance are limited
Solution Approach 1:
The patent applies a composite material structure consisting of a quartz glass base layer with a gold reflector layer on top. The quartz glass provides high temperature resistance and thermal shock resistance, while the gold layer provides high reflectivity. This composite structure resolves the contradiction by combining materials with complementary properties.
Solution Approach 2:
The reflector system is segmented into two distinct functional layers: the quartz glass base layer that handles thermal mechanical stress and the gold layer that handles optical reflection. This segmentation allows each layer to specialize in its optimal function without compromising the other.
2Illumination intensity
If a gold reflector layer is used, then high reflectivity is achieved, but reflectivity in the UV range decreases significantly
Solution Approach 1:
The quartz glass layer is specifically selected for its property of high UV reflectivity, while the gold layer is selected for its high visible and infrared reflectivity. Each layer provides high reflectivity in different wavelength ranges, collectively achieving broad-spectrum reflectivity including UV.
3Reliability
If a diffusely reflecting opaque quartz glass layer is used, then high temperature resistance and UV reflectivity are achieved, but reflectivity in the longer wavelength range decreases
Solution Approach 1:
The composite structure of quartz glass base layer plus gold reflector layer resolves this contradiction by having the quartz glass handle thermal mechanical stress and UV reflection, while the gold layer compensates for the reduced reflectivity in the longer wavelength range through its own high reflectivity properties.
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 multi-layer reflector structure significantly increases optical power density and reduces energy losses by directing secondary radiation forward, while maintaining high thermal and chemical resistance, thus improving the efficiency and service life of optical emitter components.
Implementation Method 1
compressing a surface region of the reflector layer made of opaque glass
Implementation Method 2
applying a mirror-reflective reflector layer on at least one part of the compressed surface region
Data Source
AI summary
In a known method for producing an emitter component with a reflector, a flowable aqueous SiO2 slip is produced using a slip method, and the slip is applied onto a quartz glass main part in the form of a slip layer. The slip layer is then dried and glazed, thereby forming a quartz glass layer which is more or less opaque and diffusely reflective. In order to produce an optical component with a reflective layer made of opaque quartz glass with increased reflective optical power, a method is proposed having the steps of: providing a main part with a surface which is at least partly coated with a reflective layer made of opaque glass, compressing a surface region of the reflective layer made of opaque glass, and applying a mirror-reflective layer on at least one part of the compressed surface region.