CN112992084A - Pixelized warm color liquid crystal array system for optical stealth - Google Patents
Pixelized warm color liquid crystal array system for optical stealth Download PDFInfo
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- CN112992084A CN112992084A CN201911295437.1A CN201911295437A CN112992084A CN 112992084 A CN112992084 A CN 112992084A CN 201911295437 A CN201911295437 A CN 201911295437A CN 112992084 A CN112992084 A CN 112992084A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 57
- 230000003287 optical effect Effects 0.000 title claims abstract description 17
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 238000005485 electric heating Methods 0.000 claims abstract description 5
- 230000003044 adaptive effect Effects 0.000 claims abstract description 4
- 238000005070 sampling Methods 0.000 claims abstract description 4
- 238000004806 packaging method and process Methods 0.000 claims abstract description 3
- 230000018109 developmental process Effects 0.000 claims description 13
- 238000005538 encapsulation Methods 0.000 claims description 3
- 230000032683 aging Effects 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 238000002834 transmittance Methods 0.000 claims description 2
- 239000004593 Epoxy Substances 0.000 claims 1
- 230000005660 hydrophilic surface Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 25
- 229920002379 silicone rubber Polymers 0.000 description 18
- 239000011248 coating agent Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 5
- 239000003822 epoxy resin Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 238000013329 compounding Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a pixelization thermochromic liquid crystal array system for optical stealth, which comprises a thermochromic liquid crystal color developing array, wherein the thermochromic liquid crystal color developing array is provided with color developing elements, and the color developing elements consist of a substrate layer, an electric heating layer, a color changing layer and a packaging layer; an image sensor for sampling an ambient image; the control unit adjusts the electrothermal temperature of the electrothermal layer in each color development element according to the ambient image from the image sensor so as to change the color of the color change layer in each color development element, thereby achieving the purpose that the temperature color liquid crystal color development array is adaptive to the ambient image. The invention has the beneficial effects that: the self color can be adjusted in a timely and self-adaptive manner according to environmental changes, a dynamic stealth effect is achieved by reducing the color contrast with the surrounding environment, the stealth performance of military equipment in a complex and changeable environment is guaranteed, and the maneuverability and the operational performance of weaponry are improved.
Description
Technical Field
The invention relates to a pixelized thermochromic liquid crystal array system for optical stealth.
Background
With the development of military technology, the visible light imaging guidance system has stronger and stronger capabilities of finding, tracking and intercepting targets, and threats faced by weapon systems such as airplanes and tanks become more and more serious. Therefore, the visible light camouflage stealth becomes one of the main attack directions of the future military camouflage stealth technology development. In recent years, researchers provide more and more visible light camouflage stealth methods, and the preparation of the self-adaptive color-changing array by using the intelligent color-changing material is one of effective methods for preparing a high-efficiency visible light stealth structure. Most of light stealth technologies in the current market are realized through a camouflage coating, a skin and a camouflage net, and although camouflage has been developed to a very advanced degree at the present stage, the camouflage still belongs to static color camouflage according to the principle, does not have the capability of self-adaptive intelligent color-changing camouflage, and can only realize effective camouflage when a target is static or the target is slightly changed. When the color of the surrounding environment is complex or the environment changes rapidly, the camouflage effect is lost, and the maneuvering and fighting performance of the weaponry is seriously affected.
Disclosure of Invention
The invention aims to solve the problem of static color camouflage in the prior art, and provides a novel pixelized thermochromic liquid crystal array system for light stealth.
In order to achieve the purpose, the technical scheme of the invention is as follows: a pixelated thermochromic liquid crystal array system for optical stealth comprises,
the temperature color liquid crystal color developing array is provided with color developing elements, and the color developing elements consist of a substrate layer, an electric heating layer, a color changing layer and a packaging layer;
an image sensor for sampling an ambient image;
the control unit adjusts the electrothermal temperature of the electrothermal layer in each color development element according to the ambient image from the image sensor so as to change the color of the color change layer in each color development element, thereby achieving the purpose that the temperature color liquid crystal color development array is adaptive to the ambient image.
As a preferred scheme of a pixelized thermochromic liquid crystal array system for optical stealth, the temperature range of a color changing layer in the color development unit is 15-45 ℃, the color changing sensitivity is 1 ℃, and the color changing speed is less than or equal to 1 s.
As a preferred scheme of a pixelized thermochromic liquid crystal array system for optical stealth, the temperature control precision of the electric heating layer is less than or equal to 0.2 ℃, and the surface of the electric heating layer has hydrophilicity.
As a preferred solution for the pixelized thermochromic liquid crystal array system for optical stealth, the encapsulation layer is made of a resin with high transmittance, aging resistance and good insulation, such as epoxy resin.
As a preferred solution for a pixelated thermochromic liquid crystal array system for optical stealth, the image sensor unit is a camera.
As a preferred scheme of the pixelized warm color liquid crystal array system for optical stealth, the control unit is provided with a microprocessor, an image receiving circuit module, a synchronous separation circuit module and a heating driving circuit module.
Compared with the prior art, the invention has the beneficial effects that: the self-color-adjustable military equipment has the advantages of simple structure, small preparation difficulty and low cost, can adjust self color in due time and self adaptability according to environmental change, achieves dynamic stealth effect by reducing the color contrast with the surrounding environment, ensures the stealth performance of the military equipment in a complex and changeable environment, and increases the maneuverability and the operational performance of the weapon equipment.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic diagram of the structure of the color-developing unit of the thermochromic liquid crystal color-developing array of the present invention.
Detailed Description
The invention will be described in further detail below with reference to specific embodiments and drawings. Here, the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1 and 2, there is shown a pixelated thermochromic liquid crystal array system for optical stealth, comprising,
the thermochromic liquid crystal color developing array 1 is provided with color developing elements, and the color developing elements consist of a substrate layer 11, an electrothermal layer 12, a color changing layer 13 and an encapsulation layer 14;
an image sensor 2 for sampling an ambient image;
and the control unit 3 is used for adjusting the electrothermal temperature of the electrothermal layer in each color development element according to the ambient environment image from the image sensor so as to change the color of the color changing layer in each color development element, thereby achieving the purpose that the temperature color liquid crystal color development array is adaptive to the ambient environment image.
Example 1:
the preparation environment temperature of the pixilated liquid crystal array needs to be strictly controlled below 20 ℃, so that the activity of different types of liquid crystals after compounding is ensured. The substrate shown in figure 1 is ITO conductive glass, and is cut into small pieces of 1cm multiplied by 1cm, the size of a selected silicon rubber heating plate is 1cm multiplied by 1cm, hydrogen peroxide solution with the mass concentration of 10% is coated on the surface of the silicon rubber heating plate, the silicon rubber heating plate is coated with the hydrogen peroxide solution again after being dried at room temperature, the coating is repeated for 6 times, the surface of the silicon rubber heating plate is fully hydroxylated, and the silicon rubber heating plate is dried at room temperature and coated with black. And (3) preparing compound liquid crystal ink, wherein the mass ratio of the A-type liquid crystal to the B-type liquid crystal is 3:2, coating the compound liquid crystal ink on the surface of the pretreated silicon rubber heating plate, and adding a coating agent on the surface after drying. The substrate and the heating plate sealing layer coated with the color-changing liquid crystal are sealed by epoxy resin to form the color-changing element structure. The element structure is connected with a control structure, the purpose of controlling the heating temperature is achieved by controlling the current, and the controllable color change of the color-changing element is finally realized. The color change temperature of the compounded liquid crystal is 15-30 ℃, the color of the compounded liquid crystal changes from black, red, orange, yellow, green, blue and dark blue along with the temperature rise, and the self-adaptive light stealth requirement of military equipment in non-hot areas (the air temperature is less than or equal to 30 ℃) is met.
Example 2:
the preparation environment temperature of the pixilated liquid crystal array needs to be strictly controlled below 20 ℃, so that the activity of different types of liquid crystals after compounding is ensured. The substrate shown in figure 1 is FTO conductive glass, and is cut into small pieces of 1cm multiplied by 1cm, the size of a selected silicon rubber heating plate is 1cm multiplied by 1cm, hydrogen peroxide solution with the mass concentration of 10% is coated on the surface of the silicon rubber heating plate, the silicon rubber heating plate is coated with the hydrogen peroxide solution again after being dried at room temperature, the coating is repeated for 6 times, the surface of the silicon rubber heating plate is fully hydroxylated, and the silicon rubber heating plate is dried at room temperature and coated with black. And (3) preparing the compound liquid crystal ink, wherein the mass ratio of the A-type liquid crystal to the C-type liquid crystal is 1:2, coating the compound liquid crystal ink on the surface of the pretreated silicon rubber heating plate, and adding a coating agent on the surface after drying. The substrate and the heating plate sealing layer coated with the color-changing liquid crystal are sealed by epoxy resin to form the color-changing element structure. The element structure is connected with a control structure, the purpose of controlling the heating temperature is achieved by controlling the current, and the controllable color change of the color-changing element is finally realized. The color change temperature of the compounded liquid crystal is 15-45 ℃, the color of the compounded liquid crystal generates two-stage cycle change of black-red-orange-yellow-green-blue-dark blue along with the temperature rise, the intermediate reset temperature interval is 25-30 ℃, the liquid crystal layer in the temperature interval keeps purple unchanged, and the self-adaptive light stealth requirement of military equipment in the environment with obvious temperature change is met.
Example 3:
the preparation environment temperature of the pixilated liquid crystal array needs to be strictly controlled below 20 ℃, so that the activity of different types of liquid crystals after compounding is ensured. The substrate shown in figure 1 is FTO conductive glass, and is cut into small pieces of 1cm multiplied by 1cm, the size of a selected silicon rubber heating plate is 1cm multiplied by 1cm, hydrogen peroxide solution with the mass concentration of 10% is coated on the surface of the silicon rubber heating plate, the silicon rubber heating plate is coated with the hydrogen peroxide solution again after being dried at room temperature, the coating is repeated for 6 times, the surface of the silicon rubber heating plate is fully hydroxylated, and the silicon rubber heating plate is dried at room temperature and coated with black. And (3) preparing the compound liquid crystal ink, wherein the mass ratio of the B-type liquid crystal to the C-type liquid crystal is 1:1, coating the compound liquid crystal ink on the surface of the pretreated silicon rubber heating plate, and adding a coating agent on the surface after drying. The substrate and the heating plate sealing layer coated with the color-changing liquid crystal are sealed by epoxy resin to form the color-changing element structure. The element structure is connected with a control structure, the purpose of controlling the heating temperature is achieved by controlling the current, and the controllable color change of the color-changing element is finally realized. The color change temperature of the compounded liquid crystal is 25-45 ℃, the color of the compounded liquid crystal changes with the temperature rise, and the liquid crystal meets the self-adaptive light stealth requirement of military equipment in a hot environment (the air temperature is more than or equal to 35 ℃).
The foregoing merely represents embodiments of the invention, which are described in some detail and detail, and therefore should not be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. A pixelated thermochromic liquid crystal array system for optical stealth, comprising,
the temperature color liquid crystal color developing array is provided with color developing elements, and the color developing elements consist of a substrate layer, an electric heating layer, a color changing layer and a packaging layer;
an image sensor for sampling an ambient image;
the control unit adjusts the electrothermal temperature of the electrothermal layer in each color development element according to the ambient image from the image sensor so as to change the color of the color change layer in each color development element, thereby achieving the purpose that the temperature color liquid crystal color development array is adaptive to the ambient image.
2. The pixelated thermochromic liquid crystal array system for optical stealth of claim 1, wherein the temperature of the color changing layer in the color development unit is in the range of 15-45 ℃, the color changing sensitivity is 1 ℃, and the color changing speed is less than or equal to 1 s.
3. The pixelated thermochromic liquid crystal array system for optical stealth of claim 1, wherein said electro-thermal layer has a temperature control accuracy of 0.2 ℃ or less and a hydrophilic surface.
4. The pixelated thermochromic liquid crystal array system for optical cloaking of claim 1 wherein said encapsulation layer is made of a high transmittance, aging resistant, and electrically insulating resin such as epoxy.
5. A pixelated thermochromic liquid crystal array system for optical cloaking as claimed in claim 1, wherein the image sensor unit is a camera.
6. The pixelated thermochromic liquid crystal array system for optical cloaking of claim 1, wherein the control unit has a microprocessor, an image receiving circuit module, a synchronous separation circuit module, and a heat driving circuit module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911295437.1A CN112992084A (en) | 2019-12-16 | 2019-12-16 | Pixelized warm color liquid crystal array system for optical stealth |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911295437.1A CN112992084A (en) | 2019-12-16 | 2019-12-16 | Pixelized warm color liquid crystal array system for optical stealth |
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| CN112992084A true CN112992084A (en) | 2021-06-18 |
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| CN201911295437.1A Pending CN112992084A (en) | 2019-12-16 | 2019-12-16 | Pixelized warm color liquid crystal array system for optical stealth |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116339028A (en) * | 2023-02-17 | 2023-06-27 | 中国人民解放军国防科技大学 | Application of transparent electrorheological infrared emissivity device in visible light-infrared compatible camouflage |
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Application publication date: 20210618 |