Laminated Window Shielding for Radiation and Light
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Solution Overview
Problem
Conventional building windows fail to effectively prevent the escape of electromagnetic radiation from devices like computers, despite efforts to reduce radiation loss, which compromises confidentiality and occupant comfort by blocking natural sunlight and visibility.
Innovation Solution
A laminated electromagnetic radiation shielding device comprising multiple metallic layers in a coating applied to glass panels, providing both solar control and electromagnetic shielding properties while maintaining visible light transmission, achieved through a combination of transparent and translucent glass plies with polymeric interlayers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metallic or polymeric foils are placed over windows to reduce radiation loss, then electromagnetic radiation shielding is improved, but visible light transmission deteriorates
Solution Approach 1:
The window is divided into multiple plies (glass or transparent plastic sheets) with coating layers applied to specific surfaces. Each ply and coating layer serves a specific function in the overall shielding system, allowing optimization of both shielding performance and visible light transmission by distributing the shielding function across multiple segmented layers rather than using a single opaque foil.
Solution Approach 2:
The invention uses composite structures combining transparent glass or plastic plies with thin metallic coating layers (such as silver, aluminum, or other conductive metals). These composite materials provide electromagnetic shielding through the metallic layers while the transparent substrate materials maintain visible light transmission, resolving the contradiction between shielding effectiveness and optical clarity.
2Temperature
If solar control coatings are applied to windows, then solar infrared radiation control is improved, but electromagnetic radiation shielding deteriorates
Solution Approach 1:
The invention merges solar control functionality with electromagnetic radiation shielding by applying multiple coating layers to the window plies. The coatings are designed to work together, with some layers optimized for solar infrared reflection/absorption and other layers optimized for electromagnetic shielding, achieving both functions simultaneously rather than requiring separate treatments.
Solution Approach 2:
The coated plies are designed to perform multiple functions: solar control (infrared radiation management), electromagnetic shielding, and visible light transmission. The multi-layer coating structure enables a single window assembly to provide universal protection against multiple types of radiation while maintaining optical properties, making the solution applicable to both solar control and electromagnetic shielding needs.
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 effectively attenuates electromagnetic radiation and infrared radiation, ensuring confidentiality while allowing significant visible light transmission, thus enhancing occupant comfort and security.
Implementation Method 1
A first coating having three or more metallic layers is provided over at least a portion of No. 2 surface. A second coating having three or more metallic layers is provided over at least a portion of the No. 3 surface. The first and second coatings have both solar control and/or electromagnetic shielding properties.
Implementation Method 2
The first and second coatings have both solar control and/or electromagnetic shielding properties
Implementation Method 3
the plies are secured together by a polymeric interlayer
Data Source
Figure 1~3
Figure 2
AI summary
An electromagnetic radiation shielding device includes a first ply having a No. 1 surface and a No. 2 surface and a second ply having a No. 3 surface and a No. 4 surface. The No. 2 surface of the first ply faces the No. 3 surface of the second ply. A first coating having three or more metallic layers is provided over at least a portion of one of the surfaces, such as over at least a portion of the No. 2 surface. A second coating having three or more metallic layers is provided over at least a portion of one or more of the other surfaces, such as over at least a portion of the No. 3 surface.