CN110763084A

CN110763084A - Self-adaptive camouflage device compatible with visible light and thermal infrared and display module

Info

Publication number: CN110763084A
Application number: CN201911025533.4A
Authority: CN
Inventors: 刘东青; 程海峰; 李铭洋; 彭亮; 冯望成
Original assignee: National University of Defense Technology
Current assignee: National University of Defense Technology
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-02-07
Anticipated expiration: 2039-10-25
Also published as: CN110763084B

Abstract

The invention discloses a self-adaptive camouflage device and a display module compatible with visible light and thermal infrared, wherein the camouflage device is formed by splicing a plurality of hexagonal display modules or splicing a plurality of rhombic display modules; the display module is the plane structure that the multilayer was piled up, and skin to inlayer include in proper order: the multilayer ITO transparent film with different emissivities, the polarizing film, the diffusion film, the light guide plate, the reflecting film, the aluminum substrate and the circuit board; the circuit board is also provided with a thermoelectric piece. The invention realizes visible light camouflage through LED luminescence, and ITO transparent films with different emissivities are pasted on the surface of the hexagonal (or rhombic) LED luminescent plate, and thermal infrared camouflage is carried out through heat map camouflage color with different emissivities when the thermoelectric module is closed.

Description

Self-adaptive camouflage device compatible with visible light and thermal infrared and display module

Technical Field

The invention relates to the technical field of self-adaptive camouflage, in particular to a self-adaptive camouflage device compatible with visible light and thermal infrared and a display module.

Background

In the face of the continuous development of high-technology detection and accurate guided weapons, the safety and survival of ground equipment, personnel, fixed facilities and the like are seriously threatened, the traditional static camouflage technologies such as camouflage painting camouflage, plant camouflage, barrier camouflage, false targets and the like cannot adapt to the environmental change, and the combat effectiveness and survival rate of the equipment, the personnel and the like are improved. The self-adaptive camouflage technology is an intelligent camouflage technology which is multi-disciplinary and cross-fused and enables a target to be fused with surrounding natural backgrounds in all weather, all processes and all time periods, and has ideal camouflage effect on dynamic and static states of equipment. Adaptive camouflage is basically based on the principle of variable "radiation", including control of the luminance of the illuminant, control of the spectral reflectance, emissivity, and temperature of the non-illuminant.

The existing camouflage technology, such as a stealth technology, a barrier technology and a camouflage technology, is basically static, the camouflage effect of the existing camouflage technology is limited, when the environment changes, such as time, season and scene changes, the change of a disguised target and the change of the environment are different, the original camouflage effect cannot be achieved, and even the disguise is easy to expose, the visible light and infrared compatible self-adaptive camouflage means that the disguise device can automatically respond to realize synchronous change of infrared, visible light and environment, and the mature related technology is found at present, so that the research on the visible light, thermal infrared compatible self-adaptive camouflage device has important significance for the camouflage field.

Disclosure of Invention

The invention provides a self-adaptive camouflage device compatible with visible light and thermal infrared and a display module, which are used for solving the technical problem that the existing camouflage technology cannot change along with the change of environment so as to be easily exposed.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

a self-adaptive camouflage device compatible with visible light and thermal infrared is formed by splicing a plurality of hexagonal display modules or splicing a plurality of rhombic display modules;

the display module is the plane structure that the multilayer was piled up, and skin to inlayer include in proper order: the multilayer ITO transparent film with different emissivities, the polarizing film, the diffusion film, the light guide plate, the reflecting film, the aluminum substrate and the circuit board; the circuit board is also provided with a thermoelectric piece.

As a further improvement of the process of the invention:

the circuit board is combined material or aluminium matter PCB board, and the back of circuit board is printed and is pasted and be equipped with LED control circuit and correspond the chip, and the edge of the front of circuit board is fixed with a plurality of LED lamp pearls.

The light guide plate is the transparent plate of high visible light transparency, and the side of the hexagonal edge of light guide plate has seted up a plurality of lamp pearl slotted holes, and the embedding lamp pearl slotted hole of a plurality of LED lamp pearls one-to-one on the circuit board.

The polarizing film is a frosted polarizing film, and the color is dark when the display module does not emit light.

The multilayer ITO transparent thin films with different emissivities comprise ITO transparent thin films with high emissivities, medium emissivities and/or low emissivities.

The high emissivity is 0.8-0.9, the medium emissivity is 0.5-0.6, and the low emissivity is 0.1-0.3.

The middle part of the back surface of the aluminum substrate facing the circuit board is provided with a thermoelectric piece slot hole for accommodating a thermoelectric piece.

The slotted hole is square, and the thermoelectric piece is semiconductor thermoelectric refrigeration piece or electricity card thermoelectric piece.

The invention also provides a visible light and thermal infrared compatible self-adaptive display module which is a hexagonal or rhombic multilayer stacked planar structure, and the self-adaptive display module sequentially comprises the following components from the outer layer to the inner layer: the multilayer ITO transparent film with different emissivities, the polarizing film, the diffusion film, the light guide plate, the reflecting film, the aluminum substrate and the circuit board; the circuit board is also provided with a thermoelectric piece.

Preferably, the back of circuit board is printed and is pasted and be equipped with LED control circuit and correspond the chip, and the positive edge of circuit board is fixed with a plurality of LED lamp pearls, and a plurality of lamp pearl slotted holes have been seted up to the side of the hexagonal edge of light guide plate, a plurality of LED lamp pearl one-to-one embedding lamp pearl slotted holes on the circuit board.

The invention has the following beneficial effects:

1. according to the self-adaptive camouflage device and the display module with the compatibility of visible light and thermal infrared, visible light camouflage is realized through LED luminescence, a plurality of layers of ITO transparent films with different emissivities are attached to the surface of the hexagonal (or rhombic) LED luminescent plate, and thermal infrared camouflage is realized through different emissivities when a thermoelectric module is closed.

2. In a preferred scheme, the self-adaptive camouflage device and the display module compatible with visible light and thermal infrared adopt the semiconductor thermoelectric sheet for cooling and heating, so that the temperature of the surface of the light guide plate is controlled, the infrared radiation intensity of the target surface is controlled on the premise of realizing self-adaptive display of visible light, and the synchronous change of visible light and infrared is realized in a dynamic state.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is an exploded view of a display module of a visible and thermal infrared compatible adaptive camouflage apparatus according to a preferred embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a display module of a visible and thermal infrared compatible adaptive camouflage apparatus according to a preferred embodiment of the invention;

FIG. 3 is a static IR thermal map of a visible light adaptive camouflage panel coated with ITO films of different emissivity according to a preferred embodiment of the present invention;

fig. 4 is a cooling and heating infrared thermal map of the visible light and thermal infrared compatible adaptive camouflage device according to the preferred embodiment of the invention.

The reference numerals in the figures denote:

1. ITO transparent films of different emissivities; 2. a polarizing film; 3. a diffusion membrane; 4. a light guide plate; 5. a reflective film; 6. an aluminum substrate; 7. a circuit board; 8. a thermoelectric chip; 9. LED lamp pearl.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

Example 1:

referring to fig. 1 and 2, the visible light and thermal infrared compatible self-adaptive camouflage device is formed by splicing a plurality of hexagonal display modules or splicing a plurality of rhombic display modules; wherein single display module is multilayer stacked planar structure, and skin to inlayer include in proper order: a plurality of layers of ITO transparent films 1 with different emissivities (so that the infrared heat map is of various colors), a polarizing film 2, a diffusion film 3, a light guide plate 4, a reflection film 5, an aluminum substrate 6 and a circuit board 7; the circuit board 7 is also provided with a thermoelectric piece 8. Visible light camouflage is realized through LED luminescence, a plurality of layers of ITO transparent films 1 with different emissivities are attached to the surface of a hexagonal (or rhombic) LED luminescent plate, and thermal infrared camouflage is realized through heat map camouflage color with different emissivities when a thermoelectric module is closed.

In this embodiment, the plurality of layers of ITO transparent films 1 with different emissivities include ITO transparent films with high emissivity, medium emissivity and/or low emissivity. The high emissivity is 0.8-0.9, the medium emissivity is 0.5-0.6, and the low emissivity is 0.1-0.3. By pasting ITO transparent films 1 with different emissivities, a static thermal infrared segmentation effect can be realized.

In this embodiment, the circuit board 7 is a composite material or an aluminum PCB, the LED control circuit and the corresponding chip are printed and attached on the back surface of the circuit board 7, the thermoelectric piece 8 can be disposed on the front surface of the circuit board 7, the thermoelectric piece 8 can be laid on the circuit board 7 to be connected with the circuit on the back surface, or the thermoelectric piece 8 is embedded in the circuit board 7 by forming a shallow slot hole on the circuit board 7, and the surface of the thermoelectric piece 8 protrudes out of the plane of the circuit board 7. In practice, a slot hole for accommodating the thermoelectric piece 8 protruding from the plane of the circuit board 7 may be formed in the middle of the back surface of the aluminum substrate 6 facing the circuit board 7. The slotted hole is square, and thermoelectric piece 8 is semiconductor thermoelectric refrigeration piece or electricity card thermoelectric piece 8. The slotted holes of the thermoelectric pieces 8 on the aluminum substrate 6 enable the heat conduction between the thermoelectric pieces 8 and the aluminum substrate 6 to be better. Because the aluminum substrate 6 has high thermal conductivity, heat can be quickly diffused to the whole aluminum substrate 6, the temperature of the light guide plate 4 can be changed, and an extensible cascade thermoelectric sheet 8 framework and a bridge control circuit of an I2C communication protocol are adopted; the polarity inversion is controlled by using a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) switch to realize the refrigeration and heating.

In this embodiment, a plurality of LED lamp pearls 9 are fixed with in the positive edge of circuit board 7, then light guide plate 4 is the transparent sheet material of high visible light transparency, and reflective film 5 pastes and covers in the 4 backs of light guide plate, and the side in the hexagonal edge of light guide plate 4 has seted up a plurality of lamp pearl slotted holes, and a plurality of LED lamp pearls 9 one-to-one embedding lamp pearl slotted holes on the circuit board 7. The reflecting film 5 is a white film, and light emitted by the LED passes through the light guide plate 4 and is uniformly reflected upwards by the reflecting film 5; the diffusion film 3 is attached to the upper surface of the light guide plate 4, and after light emitted by the light guide plate 4 is scattered by the particle medium in the diffusion film 3, the light-emitting area is larger, the uniformity is better, and a point light source of the LED is fully changed into a uniform surface light source. And the thickness of the display module can be reduced as much as possible by adopting a side entry type display module.

In the embodiment, the frosted polarizing film 2 is used as the polarizing film 2, and the color is dark when the display module does not emit light. When the LED does not emit light, the color is dark, so that the self-adaptive device is prevented from being too white and easy to expose when in a closed state; moreover, the surface is rough (frosted), so that specular reflection and high glossiness can be avoided, and camouflage can be better performed.

Referring to fig. 3, an infrared thermograph of a device display panel in a closed state after being coated with ITO films of three different emissivities is shown. The infrared heat map can show that the thermal infrared segmentation effect is obvious, and the thermal infrared camouflage is well realized.

Referring to fig. 4, it can be seen that the infrared radiation intensity of the target can be effectively controlled by the voltage to realize the thermal infrared self-adaptive camouflage for the infrared heat map of the tested self-adaptive module during refrigeration and heating under the voltage of 1V.

Example 2:

the present embodiment is a component module of embodiment 1, and the visible light and thermal infrared compatible adaptive display module of the present embodiment is a hexagonal or rhombic multi-layer stacked planar structure, and includes in sequence from an outer layer to an inner layer: the multilayer ITO transparent film 1 with different emissivities, a polarizing film 2, a diffusion film 3, a light guide plate 4, a reflecting film 5, an aluminum substrate 6 and a circuit board 7; the circuit board 7 is also provided with a thermoelectric piece 8. The back of circuit board 7 is printed and is pasted and be equipped with LED control circuit and correspond the chip, and the positive edge of circuit board 7 is fixed with a plurality of LED lamp pearls 9. A plurality of lamp bead slotted holes have been seted up to the side in the hexagonal edge of light guide plate 4, and a plurality of LED lamp beads 9 one-to-one embedding lamp bead slotted holes on circuit board 7.

In conclusion, the visible light camouflage is realized through the LED luminescence, and the thermal infrared camouflage is realized through the heat map camouflage color with different emissivities when the thermoelectric module is closed; the semiconductor thermoelectric sheet 8 is used for cooling and heating, so that the temperature of the surface of the light guide plate 4 is controlled, the infrared radiation intensity of the target surface is controlled on the premise of realizing visible light self-adaptive display, and the synchronous change of visible light and infrared light in a dynamic state is realized. The display module is in a hexagonal or rhombic structure, can be spliced into any shape or plane at will, and can be controlled respectively to disguise various patterns.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-adaptive camouflage device compatible with visible light and thermal infrared is characterized by being formed by splicing a plurality of hexagonal display modules or a plurality of rhombic display modules;

the display module is a multilayer stacked plane structure, and the outer layer to the inner layer sequentially comprise: the LED display panel comprises a plurality of layers of ITO transparent films (1) with different emissivities, a polarizing film (2), a diffusion film (3), a light guide plate (4), a reflecting film (5), an aluminum substrate (6) and a circuit board (7); the circuit board (7) is also provided with a thermoelectric piece (8).

2. The visible light and thermal infrared compatible self-adaptive camouflage device as claimed in claim 1, wherein the circuit board (7) is a composite material or aluminum PCB, the LED control circuit and the corresponding chip are printed and attached on the back surface of the circuit board (7), and a plurality of LED lamp beads (9) are fixed on the edge of the front surface of the circuit board (7).

3. The visible light and thermal infrared compatible self-adaptive camouflage device as claimed in claim 2, wherein the light guide plate (4) is a transparent plate with high visible light transparency, a plurality of lamp bead slots are formed in the side surface of the hexagonal edge of the light guide plate (4), and a plurality of LED lamp beads (9) on the circuit board (7) are embedded into the lamp bead slots in a one-to-one correspondence manner.

4. The visible and thermal infrared compatible adaptive camouflage device according to any one of claims 1 to 3, wherein said polarized film (2) is a frosted polarized film (2) that is dark in color when the display module is not illuminated.

5. The visible and thermal infrared compatible adaptive camouflage device according to claim 4, wherein said ITO transparent films (1) of different emissivity comprise high, medium and/or low emissivity ITO transparent films.

6. The visible light and thermal infrared compatible adaptive camouflage device according to claim 5, wherein the high emissivity is 0.8 to 0.9, the medium emissivity is 0.5 to 0.6, and the low emissivity is 0.1 to 0.3.

7. The visible-light-and-thermal-infrared-compatible adaptive camouflage device according to claim 4, wherein a thermoelectric piece slot hole for accommodating a thermoelectric piece (8) is formed in the middle of the aluminum substrate (6) facing the back surface of the circuit board (7).

8. The visible and thermal infrared compatible adaptive camouflage device according to claim 7, wherein said slotted holes are square, and said thermoelectric plate (8) is a semiconductor thermoelectric cooling plate or an electric card thermoelectric plate (8).

9. The utility model provides a visible light and thermal infrared compatible self-adaptation display module which characterized in that, for the plane structure of the multilayer stack of hexagon or rhombus, outer to inlayer include in proper order: the LED display panel comprises a plurality of layers of ITO transparent films (1) with different emissivities, a polarizing film (2), a diffusion film (3), a light guide plate (4), a reflecting film (5), an aluminum substrate (6) and a circuit board (7); the circuit board (7) is also provided with a thermoelectric piece (8).

10. The visible light and thermal infrared compatible adaptive display module according to claim 9, wherein the back surface of the circuit board (7) is printed and pasted with an LED control circuit and a corresponding chip, a plurality of LED lamp beads (9) are fixed at the edge of the front surface of the circuit board (7), a plurality of lamp bead slots are formed in the side surface of the hexagonal edge of the light guide plate (4), and the plurality of LED lamp beads (9) on the circuit board (7) are embedded into the lamp bead slots in a one-to-one correspondence manner.