Switchable Energy Scattering Coatings for Transparent-Opaque Filtering
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Solution Overview
Problem
Existing technologies for electromagnetic energy filtering and light control are limited in their adaptability to a wide range of use cases due to inherent limitations in manufacturing processes and adverse effects on aesthetics and functionality when filtering light in the visible and near-visible spectrum.
Innovation Solution
Development of electrically-switchable energy-filtering and shutter components that can transition between transparent and opaque modes, using energy/light directing/scattering layers with micrometer or sub-micrometer particles and adjustable refractive indices to selectively scatter or transmit electromagnetic energy, allowing for customizable appearance and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional electromagnetic energy filtering technologies are used, then light filtering capability is achieved, but adaptability to a wide range of use cases is limited and aesthetic quality deteriorates
Solution Approach 1:
The patent implements dynamically switchable energy scattering layers that can transition between transparent and opaque states through electrical activation. This dynamic capability allows the same structure to adapt to multiple use cases (privacy control, lighting control, display integration) rather than requiring different fixed structures for each application, thereby resolving the contradiction between adaptability and manufacturing complexity.
Solution Approach 2:
The energy scattering layer structure is designed to perform multiple functions simultaneously: it can control visible light transmission, scatter electromagnetic energy, integrate with display devices, and provide privacy control. This multi-functionality allows a single manufactured component to serve various purposes across different use cases, addressing the adaptability limitation without requiring separate specialized components for each function.
2Object-affected harmful factors
If light filtering is implemented using conventional methods, then electromagnetic energy filtering is achieved, but aesthetic integration deteriorates
Solution Approach 1:
The patent utilizes energy scattering layers that can change their optical properties between transparent and opaque states, effectively changing the 'color' or appearance of the structure. This allows the same physical structure to provide electromagnetic energy filtering when needed while maintaining aesthetic integration (transparent state) when filtering is not required, resolving the contradiction between filtering capability and aesthetic quality.
Solution Approach 2:
By making the filtering property dynamic rather than static, the structure can adapt its appearance to match aesthetic requirements while providing filtering functionality on demand. The switchable nature allows the structure to be transparent for aesthetic purposes and opaque for filtering purposes, eliminating the need to choose between the two conflicting requirements.
3Adaptability or versatility
If energy scattering layers with micrometer particles are used, then selective electromagnetic energy scattering is achieved, but device complexity increases
Solution Approach 1:
The patent achieves selective energy scattering by controlling parameters of the scattering layer (particle size, refractive index, layer thickness) rather than through complex structural arrangements. By optimizing these physical parameters, the desired selective scattering capability is obtained with a relatively simple layered structure, resolving the contradiction between adaptability and device complexity.
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 components provide a versatile solution that enhances aesthetic integration of embedded devices while maintaining functionality, allowing for adjustable transparency and appearance, including masking or revealing underlying structures and devices as needed.
Implementation Method 1
using energy/light directing/scattering layers with micrometer or sub-micrometer particles and adjustable refractive indices to selectively scatter or transmit electromagnetic energy
Data Source
AI summary
A system and method are provided for forming energy filter layers or shutter components, including energy scattering layers that are actively electrically switchable. The energy filters or shutter components are operable between at least a first mode in which the layers, and thus the presentation of the shutter components, appear substantially transparent when viewed from an energy/light incident side, and a second mode in which the layers, and thus the presentation of the energy filters or shutter components, appear opaque to the incident energy impinging on the energy incident side. The differing modes are selectable by electrically energizing, differentially energizing and/or de-energizing electric fields in a vicinity of the energy scattering layers. Refractive indices of transparent particles, and the transparent matrices in which the particles are fixed, are tunable according to the applied electric fields. The energy scattering layers may conceal a sensor such as a camera or photovoltaic cell.