Transparent EM Wave Member With Dummy Patterns for Visual Blending
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Solution Overview
Problem
Existing transparent electromagnetic waves controlling members, such as reflect arrays and transmit arrays, face challenges in making resonant element patterns invisible while maintaining the properties of the electromagnetic waves controlling member.
Innovation Solution
A transparent electromagnetic waves controlling member is designed with a dielectric substrate, a plurality of resonant elements placed on its surface, and a dummy pattern placed in regions other than where the resonant elements are, ensuring the dummy pattern is 0.1 times or less in size than the wavelength of the electromagnetic waves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transparent conductive layer or conductive mesh is placed in the portion where no resonant element exists to approximate transmittance, reflectance, and refractive index, then the visual transparency is improved, but the properties of the reflect array or transmit array change due to interference from resonance of the transparent conductive layer or conductive mesh
Solution Approach 1:
The patent creates a visual copy of the resonant element pattern using dummy patterns in the background region. These dummy patterns replicate the visual appearance of the resonant elements, making the transition between regions with and without resonant elements imperceptible, thereby achieving visual transparency without adding conductive materials that would cause interference
Solution Approach 2:
The patent changes the visual parameters (transmittance, reflectance, refractive index) of the background region by adding dummy patterns, rather than changing the physical material properties through conductive layers. This allows visual homogenization while maintaining the electromagnetic wave controlling properties unchanged
2Reliability
If resonant elements are arranged to control reflection or transmission direction of electromagnetic waves, then the electromagnetic wave controlling function is improved, but the pattern of resonant elements becomes visually visible
Solution Approach 1:
The patent uses dummy patterns to create a visual copy of the resonant element pattern in the background region. This copying approach makes the resonant element pattern invisible by blending it with the surrounding area, while the resonant elements themselves remain intact to perform their electromagnetic wave controlling function
Solution Approach 2:
The patent achieves visual blending by matching the optical properties (transmittance, reflectance, refractive index) of the dummy patterns with those of the resonant elements. This color/optical matching makes the resonant element pattern invisible to the human eye while maintaining electromagnetic functionality
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 makes the resonant element patterns invisible without affecting the properties of the electromagnetic waves controlling member, allowing for easier installation without spoiling views or affecting electromagnetic wave properties.
Implementation Method 1
a plurality of resonant elements placed on at least one surface of the dielectric substrate, transmitting visible light and resonating with the electromagnetic waves
Data Source
AI summary
The present disclosure provides a transparent electromagnetic waves controlling member transmitting visible light and controlling a reflection direction or a transmission direction of electromagnetic waves in a particular frequency band, the transparent electromagnetic waves controlling member comprising: a dielectric substrate transmitting visible light; a plurality of resonant elements placed on at least one surface of the dielectric substrate, transmitting visible light and resonating with the electromagnetic waves; and a dummy pattern placed on at least one surface of the dielectric substrate, placed in a region other than a region where the plurality of resonant elements is placed, and transmitting visible light, wherein a size of the dummy pattern is 0.1 times or less of a wavelength of the electromagnetic waves.