Reflective Display Device for Visible Light and Infrared Camouflage
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Solution Overview
Problem
Existing camouflage technologies for military equipment are inadequate as they fail to effectively conceal vehicles in both visible light and infrared regions, especially when the environment changes, and are not adaptive to seasonal variations.
Innovation Solution
A reflective display device using a unit cell with charged particles and a shielding layer to adjust color and near-infrared reflectance based on an electric field, combined with an active camouflage system that analyzes the environment to form real-time camouflage patterns in both visible and infrared regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed camouflage pattern is painted on the vehicle, then the vehicle is concealed in certain circumstances, but the vehicle is easily exposed when the surrounding environment changes
Solution Approach 1:
The patent applies dynamics by using an electrophoretic display device that can dynamically change camouflage patterns in real-time. The display device includes particles with different electric charges that move in response to applied electric fields, allowing the camouflage pattern to adapt dynamically to changing environmental conditions rather than remaining fixed.
Solution Approach 2:
The patent utilizes parameter changes by controlling the electric field parameters (voltage, polarity) to change the position and distribution of charged particles within the display medium. This allows the optical properties (reflectance, absorption) of the camouflage surface to be changed dynamically, enabling adaptation to different environmental backgrounds.
2Reliability
If the vehicle is camouflaged in the visible light region, then the vehicle is concealed from visible observation, but the vehicle is exposed to night-time observation equipment in the near-infrared region
Solution Approach 1:
The patent applies universality by designing a camouflage system that functions across multiple spectral regions simultaneously. The display device incorporates particles and materials that can control both visible light and near-infrared radiation, allowing a single system to provide camouflage effectiveness against both visible observation and infrared detection equipment.
Solution Approach 2:
The patent uses composite materials comprising particles with different optical properties for different spectral regions. The display medium contains particles that selectively interact with visible light and near-infrared radiation, creating a composite structure that can independently control reflectance and absorption in both spectral regions through electric field application.
3Reliability
If a reflective display device with multiple particles and electrode layers is used, then camouflage in both visible light and infrared regions is achieved, but the device structure becomes complex
Solution Approach 1:
The patent applies segmentation by dividing the display device into distinct functional layers: upper substrate, upper electrode layer, unit cells containing particles and fluid, lower electrode layer, shielding layer, and lower substrate. Each layer performs a specific function, allowing the complex multi-region camouflage capability to be achieved through modular, organized structure rather than a monolithic complex design.
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 effective camouflage in both visible light and infrared regions, adapting to environmental changes and ensuring the vehicle remains concealed from detection by various observation methods.
Implementation Method 1
the unit cell containing a fluid and multiple particles being charged with opposite polarities and having different quantities of electric charge or different sizes; a lower electrode layer provided under the unit cell, the lower electrode layer for generating an electric field in conjunction with the upper electrode layer to control the unit cell included in a pixel area
Implementation Method 2
a shielding layer provided under a lower surface of the lower electrode layer, the shielding layer blocking thermal-infrared rays
Implementation Method 3
particles containing pigment reflecting or absorbing near-infrared rays so as to adjust reflectance of near-infrared rays depending on electric field applied to the unit cell
Data Source
AI summary
Disclosed is a reflective display device for visible light and infrared camouflage and an active camouflage device using the same, the reflective display device including: an upper substrate formed of a transparent material; an upper electrode layer formed of a transparent material provided under the upper substrate; at least one unit cell provided under the upper electrode layer, the unit cell containing a fluid and multiple particles being charged with opposite polarities and having different quantities of electric charge or different sizes; a lower electrode layer provided under the unit cell, the lower electrode layer for generating an electric field in conjunction with the upper electrode layer and defining a pixel area; a metal layer provided under the lower electrode layer, the metal layer blocking thermal-infrared rays; and a lower substrate provided under the metal layer.