Low Emissivity Ceramic Coating for Infrared Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing infrared detection technologies face difficulties in reducing background infrared radiation, particularly with high emissivity materials like window glass, which hinders object detection accuracy.
Innovation Solution
A coating material comprising ceramic particles with specific compositional formulas (AaRbAlcO4, AaRbGacO4, RxAlyO12, RxGayO12) and a binder, where the ceramic particles have a porosity of 20-40% and include rare earth elements, reducing infrared radiation by scattering and transmitting less infrared light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If window glass is used as background region, then it is easy to separate occupant and background, but infrared ray radiation of background is high (emissivity 0.94)
Solution Approach 1:
The patent changes the emissivity parameter of the background material by applying a coating with specific ceramic particles (porosity 20-40%, containing AaRbAlcO4, AaRbGacO4, RxAlyO12, or RxGayO12 compounds) that have low infrared emissivity, thereby reducing background radiation while maintaining separation accuracy
Solution Approach 2:
The patent uses a composite coating material consisting of ceramic particles with specific compositions and porosity ranges combined with binders, creating a material that exhibits low infrared emissivity while maintaining structural integrity and adhesion
2Object-generated harmful factors
If ceramic particle porosity is increased to reduce infrared radiation, then infrared radiation is reduced, but mechanical strength may deteriorate
Solution Approach 1:
The patent optimizes the porosity parameter of ceramic particles to a specific range (20-40%) that balances infrared radiation reduction with mechanical strength maintenance, rather than maximizing porosity alone
Solution Approach 2:
The patent combines ceramic particles with optimized porosity and specific compositions with binders to create a composite coating material that achieves both low infrared emissivity and adequate mechanical strength
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 coating material effectively reduces infrared radiation, enhancing contrast and detection accuracy when used as a background in infrared sensor applications.
Implementation Method 1
reduces infrared radiation by scattering and transmitting less infrared light
Implementation Method 2
the ceramic particle includes a pore, and a porosity of the ceramic particle is equal to or greater than 20% and equal to or less than 40%
Data Source
AI summary
A coating material includes a ceramic particle and binder. The ceramic particle includes a compound represented by a compositional formula of any of AaRbAlcO4, AaRbGacO4, RxAlyO12, and RxGayO12. A is one or more elements selected from a group consisting of Ca, Sr, and Ba, and R is one or more elements selected from a group consisting of rare earth elements. a is equal to or greater than 0.9 and equal to or less than 1.1, b is equal to or greater than 0.9 and equal to or less than 1.1, c is equal to or greater than 0.9 and equal to or less than 1.1, x is equal to or greater than 2.9 and equal to or less than 3.1, and y is equal to or greater than 4.9 and equal to or less than 5.1. The ceramic particle includes a pore and the porosity of the ceramic particle is equal to or greater than 20% and equal to or less than 40%.