KR-20260066622-A - A sheet with a controlled infrared radiation pattern that responds to temperature

KR20260066622AKR 20260066622 AKR20260066622 AKR 20260066622AKR-20260066622-A

Abstract

One embodiment of the present invention provides a technology capable of implementing a camouflage effect in the visible light region and simultaneously implementing a camouflage effect in the infrared region due to a temperature rise, and controlling the camouflage effect. A temperature-sensitive infrared radiation active control sheet according to an embodiment of the present invention comprises: a block formed of vanadium oxide; and a substrate formed on the lower part of the block.

Inventors

조형희
임준수
이남규
장인중
남주영
송진섭
김재형

Assignees

연세대학교 산학협력단

Dates

Publication Date: 20260512
Application Date: 20251017
Priority Date: 20241104

Claims (12)

A block formed of vanadium oxide; and A substrate formed on the lower part of the above block; comprising, A temperature-sensitive infrared radiation active control sheet characterized in that one of the multiple blocks and another block have different thicknesses.
In claim 1, A temperature-sensitive infrared radiation active control sheet characterized by the above plurality of blocks forming a camouflage pattern.
In claim 1, A temperature-sensitive infrared radiation active control sheet characterized in that one of the plurality of blocks and another block have the same thickness.
In claim 1, A temperature-sensitive infrared radiation active control sheet characterized by the thickness of the above block being 50 to 400 nanometers (nm).
In claim 1, A temperature-sensitive infrared radiation active control sheet characterized in that when the temperature of the plurality of blocks is above the transition temperature, the infrared radiation signals of each of the plurality of blocks and each of the other blocks are different from each other.
In claim 1 A temperature-sensitive infrared radiation active control sheet characterized in that when the temperature of the plurality of blocks is below the transition temperature, the color of one of the plurality of blocks and another block are different from each other.
In claim 1, A temperature-sensitive infrared radiation active control sheet characterized by the fact that a camouflage pattern in the visible region and a camouflage pattern in the infrared region are switched and expressed according to the temperature of the above block.
In claim 1, A temperature-sensitive infrared radiation active control sheet characterized in that the substrate is formed of quartz, aluminum oxide ( Al₂O₃ ) , or silicon dioxide ( SiO₂ ).
In claim 1, A temperature-sensitive infrared radiation active control sheet characterized by further including a base plate formed on the lower part of the above substrate.
In claim 9, A temperature-sensitive infrared radiation active control sheet characterized in that the base plate is formed of a flexible material.
In claim 9, A temperature-sensitive infrared radiation active control sheet characterized by the formation of a combination of one substrate and one block, and a plurality of combinations disposed on the base plate.
In claim 1, A temperature-sensitive infrared radiation active control sheet characterized in that the surface shape of the above block is formed as a polygon, a circle, or an ellipse.

Description

Temperature-sensitive infrared radiation active control sheet {A sheet with a controlled infrared radiation pattern that responds to temperature} The present invention relates to a temperature-sensitive infrared radiation active control sheet, and more specifically, to a technology capable of implementing a camouflage effect in the visible light region and simultaneously implementing a camouflage effect in the infrared region due to a temperature rise, and controlling the camouflage effect. Infrared camouflage technology is an important technology for increasing survivability and operational success by reducing the detectability of friendly military operational systems to enemy detection systems. Infrared detection is achieved by primarily detecting the infrared band (8–12 μm) in low-temperature ranges and the mid-infrared band (3–5 μm) in high-temperature ranges, and active research is being conducted to reduce infrared radiation signals in the detection bands to implement infrared camouflage technology. Along with the recent advancements in infrared detection sensors, the development of analysis technologies utilizing artificial intelligence learning is currently neutralizing existing infrared camouflage technologies by analyzing and identifying infrared signals in the form of images. Therefore, to overcome the limitations of such uniform camouflage technology, it is necessary to actively generate infrared camouflage patterns. However, simultaneously implementing camouflage patterns in the visible spectrum is a difficult task. Korean Registered Patent No. 10-2018-0105109 (Title of Invention: Camouflage Device) discloses a camouflage device comprising a paint layer applied to the camouflage device such that the camouflage color changes to a required color by moisture or temperature depending on the operating conditions of the camouflage device. FIG. 1 is an image related to a camouflage pattern implemented in a visible area by a sheet according to one embodiment of the present invention. FIG. 2 is an image related to a camouflage pattern implemented in the visible region and infrared region by a sheet according to one embodiment of the present invention. FIGS. 3 and FIGS. 4 are a graph and an image related to discoloration in the visible area according to the thickness of a block according to an embodiment of the present invention. FIG. 5 is a graph related to infrared region discoloration according to the thickness and temperature of a block according to one embodiment of the present invention. FIG. 6 is an image related to the camouflage pattern of a sheet according to one embodiment of the present invention and the camouflage pattern of a sheet according to the prior art according to temperature. The present invention will be described below with reference to the attached drawings. However, the present invention may be implemented in various different forms and is therefore not limited to the embodiments described herein. Furthermore, in order to clearly explain the present invention in the drawings, parts unrelated to the explanation have been omitted, and similar parts throughout the specification have been given similar reference numerals. Throughout the specification, when it is stated that a part is "connected (connected, in contact, combined)" with another part, this includes not only cases where they are "directly connected," but also cases where they are "indirectly connected" with other members interposed between them. Furthermore, when it is stated that a part "includes" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but rather allows for the inclusion of additional components. The terms used in this specification are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Hereinafter, the present invention will be described in detail with reference to the attached drawings. FIG. 1 is an image related to a camouflage pattern implemented in a visible area by a sheet (10) according to one embodiment of the present invention, and FIG. 2 is an image related to a camouflage pattern implemented in a visible area and an infrared area by a sheet (10) according to one embodiment of the present invention. Here, FIG. 2(a) is an image of a camouflage pattern implemented in a visible region below the transition temperature of block (110), and FIG. 2(b) is an image of a camouflage pattern implemented in an infrared region above the tra