Carrier-Free Interference Layer System for Spectral Control
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Solution Overview
Problem
Existing optical interference layer systems have limited adjustability in spectral characteristics and require a carrier substrate, which restricts their application and flexibility in filtering specific wavelength ranges, especially in compact forms like paints or inks.
Innovation Solution
An interference layer system comprising multiple optically transparent layers without a carrier substrate, made from dielectrics and metals with differing refractive indices, allowing for adjustable reflection and transmission curves across the 300 nm to 800 nm wavelength range, produced by vapor deposition techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If an interference layer system is applied to a carrier substrate, then the structural stability is improved, but the adaptability and flexibility for compact applications are reduced
Solution Approach 1:
The patent extracts and removes the carrier substrate from the interference layer system, creating a free-standing multilayer structure that can function independently without requiring a supporting substrate. This enables the optical filter to be applied directly to various surfaces or incorporated into compact formulations like paints and inks.
Solution Approach 2:
The patent employs thin film technology to create a flexible, self-supported interference layer system that can conform to different surfaces and applications. The thin film structure provides both structural integrity and adaptability for compact applications without the constraints of a rigid carrier substrate.
2Ease of manufacture
If a carrier substrate is used in the interference layer system, then the manufacturing process is simplified, but the spectral adjustability and filtering capability are limited
Solution Approach 1:
The patent creates a dynamic, adjustable spectral response by designing the multilayer structure with variable thicknesses and material compositions that can be optimized for specific wavelength ranges. The absence of a carrier substrate allows for greater flexibility in adjusting the optical properties without manufacturing constraints.
Solution Approach 2:
The patent utilizes parameter changes in layer thickness, material composition, and refractive index to achieve different spectral characteristics. The multilayer structure can be designed with specific parameters to filter particular wavelength ranges, enabling high spectral adjustability without the limitations imposed by a carrier substrate.
3Adaptability or versatility
If the interference layer system is designed for compact applications like paints or inks, then the adaptability is improved, but the structural stability and handling are reduced
Solution Approach 1:
The patent employs composite material structures combining different dielectric and metallic layers with specific refractive indices to create a stable, self-supported interference layer system. The composite structure provides both the adaptability for compact applications and the structural stability needed for handling and performance.
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 provides a highly adjustable and flexible optical filter system with enhanced spectral control, enabling effective filtering of specific wavelength ranges without the constraints of a carrier substrate, suitable for use in compact applications like paints and inks.
Implementation Method 1
Optical interference layer systems have been known for a long time and are employed for a wide variety of different purposes... layers are employed with a thickness in the order of magnitude of the wavelength of light... Optical interference layer systems consist of stacks of layers having different refractive indices
Implementation Method 2
By application of an interference layer system designed as an antireflection layer, the reflection can be reduced to values below 1% in the visible spectral range... suitably designed interference layer systems are also widely used for applications for enhancing reflection
Implementation Method 3
produced by vapor deposition techniques
Data Source
AI summary
An interference layer system includes a plurality of optically transparent layers. The interference layer system has no carrier substrate and the optically transparent layers are disposed extensively over one another. The optically transparent layers are selected from the group consisting of dielectrics, metals, and combinations thereof, with at least one first optically transparent layer having a refractive index n1 and at least one second optically transparent layer having a refractive index n2, and with the first refractive index n1 and the second refractive index n2 differing by at least 0.1. The disclosure further relates to the production and the use of the interference layer system.