Natural vegetation imitating visible light-laser-infrared compatible camouflage film

Abstract

The invention belongs to the technical field of camouflage materials, and particularly relates to a natural vegetation imitating visible light-laser-infrared compatible camouflage film. Comprising a substrate, a thermal infrared dual-band camouflage and near infrared spectrum regulation and control layer and a visible light-laser-near infrared regulation and control layer which are arranged in sequence. The upper-layer natural vegetation imitating structure is mainly used for simulating spectral characteristics of natural vegetation, and meanwhile, the extremely low reflectivity at the position of 1.06 mu m near-infrared laser wavelength is achieved by controlling the thickness of a film layer; the thermal infrared camouflage structure in the middle realizes low emissivity of medium-wave infrared and long-wave infrared; the substrate provides a bearing function. The multilayer film not only can realize refined simulation of a reflection spectrum of natural vegetation in a visible light-near infrared wavelength range, but also has the functions of adjusting different visible light spectrum colors and resisting an infrared detector and a 1.06 [mu] m laser detector; and a visible light-laser-infrared multi-band compatible camouflage performance covering a wide wavelength range of 0.4-14 microns can be realized.

Description

Technical Field

[0001] The invention belongs to the technical field of camouflage materials, and in particular relates to a visible light-laser-infrared compatible camouflage film that imitates natural vegetation. Background Art

[0002] With the rapid development of optical detection technologies such as visible light, infrared, and laser, the demand for optical camouflage of targets is becoming increasingly urgent. Among them, the design and application of low-radiance materials in the infrared detection band is an important means to deal with infrared reconnaissance threats; at the same time, the control methods to deal with the visible light range are mainly divided into two categories: simulating background color and reducing reflection intensity to achieve low characteristic signals under the naked eye and visible light detection equipment. Among them, the simulated background needs to adjust the surface visible light reflection spectrum so that the visible light color characteristics of the target surface are integrated with the background; in addition, in order to deal with laser detection threats, the target surface needs to have a lower reflectivity at the corresponding wavelength to reduce the echo signal. Faced with the threat of multi-band detection methods, higher requirements are placed on the regulation of the spectral characteristics of camouflage materials.

[0003] Natural vegetation is one of the common backgrounds for camouflaged targets. There are three main methods currently used to benchmark its spectral characteristics in the visible-near infrared band. 1. Directly extract chlorophyll from plant leaves, use in vitro chlorophyll as a functional pigment, and prepare green camouflage materials to simulate the chromaticity and spectral characteristics of green plants. However, since chlorophyll that leaves the organic body is affected by light, temperature, etc., its spectral characteristics lose similarity quickly; 2. Use bionic composite materials to simulate the water-containing characteristics of plants, such as using absorbent resins to store water to simulate the storage of water in leaf cell vacuoles, directly use liquid water as filler to prepare water-containing polyurethane coatings, use hydrothermal methods to insert organic pigments into the interlayers of magnesium-aluminum layered double hydroxides, and adjust the water content by adjusting the structure of mesoporous silica powder; 3. Use Cr2O3 particles to simulate the absorption characteristics of chlorophyll and the scattering characteristics of multilayer cells in plant leaves. Although these bionic materials have achieved certain spectral simulation effects, they still face challenges in terms of stability and practicality. They have poor temperature and weather resistance and are prone to failure under long-term light exposure and alternating environments such as dryness and wetness, cold and heat, day and night, and eventually become "same-color, different-spectrum" materials that are different from the spectral characteristics of natural vegetation. In addition to the consideration of spectral simulation itself, the complex preparation process, special structural form, and single surface color limit its compatibility design with other camouflage methods, greatly reducing its practicality and scalability, making the research on spectral camouflage materials in the visible light-near infrared band await breakthroughs in new materials and new technologies.

[0004] Multi-band compatible camouflage is essentially the regulation of spectral responses in different wavelength ranges (even in the same wavelength range), and these spectral responses are contradictory in many cases. Visible light-laser-infrared compatible camouflage studies the cross-band spectral regulation method in the range of 0.4 to 14 μm, and the narrowband absorption required at the typical laser wavelength of 1.06 μm is inconsistent with the spectral characteristics required to simulate natural vegetation. In addition, the film structure that controls the thermal infrared dual-band camouflage will also affect the spectral characteristics of the visible light-near infrared band. Since it is difficult to take into account multiple needs, the regulation is difficult. Faced with the design requirements of "same color and same spectrum" materials, spectral regulation technology provides a new solution for this. Therefore, it is a feasible way to construct a surface color-adjustable spectral feature that simulates natural vegetation and combine thermal infrared camouflage and laser camouflage by adopting the method of multi-layer optical film design.

[0005] In summary, there is currently no multilayer thin film system that can simultaneously meet the visible light-near infrared spectral characteristics of simulated natural vegetation, 1.06μm narrowband high absorption, and thermal infrared dual-band high reflectivity (low emissivity) to meet the needs of visible light-laser-infrared compatible camouflage. Summary of the invention

[0006] The purpose of the present invention is to provide a visible light-laser-infrared compatible camouflage film that imitates natural vegetation, so as to perform spectral compatibility regulation of visible light, laser and infrared bands, realize the simulation of visible light-near infrared spectral characteristics of natural vegetation and low emissivity in thermal infrared dual bands.

[0007] To achieve the above-mentioned object, the present invention provides a visible light-laser-infrared compatible film imitating natural vegetation, comprising a substrate, a thermal infrared dual-band camouflage and near-infrared spectrum regulation layer, and a visible light-laser-near-infrared regulation layer which are stacked in sequence;

[0008] The thermal infrared dual-band stealth and near-infrared spectrum regulation layer is stacked and arranged in parallel to the substrate in a periodic order of MHMHMLMHMHMHMH, and the visible light-laser-near-infrared regulation layer is stacked and arranged in parallel to the thermal infrared dual-band stealth and near-infrared spectrum regulation layer in a periodic order of MHMHMHMHMHMLML;

[0009] Among them, H represents a high refractive index material with a refractive index of 3.5-5, preferably 3.9-4.5, M represents a medium refractive index material with a refractive index of 2.1-2.8, preferably 2.2-2.6, and L represents a low refractive index material with a refractive index of 1.3-2, preferably 1.4-1.7.

[0010] It can be seen that the thermal infrared dual-band camouflage and near-infrared spectrum regulation layer and the visible light-laser-near-infrared regulation layer are respectively composed of alternating stacks of multilayer dielectric materials with three different refractive indices. The visible light-laser-near-infrared regulation layer can realize selective absorption of the visible light band and visible light-near-infrared spectrum regulation; the thermal infrared dual-band camouflage and near-infrared spectrum regulation layer can realize the thermal infrared dual-band high reflection band and assist in regulating the waveform within the near-infrared range.

[0011] Furthermore, the high refractive index material H is one of germanium, selenium, tellurium, silicon, and silicon carbide, preferably germanium, and the imaginary part of the refractive index of the high refractive index material is not zero in the visible light band; the medium refractive index material M is a sulfide, preferably zinc sulfide; the low refractive index material L is an oxide or a fluoride, the oxide includes aluminum oxide and silicon dioxide, the fluoride includes one of magnesium fluoride, ytterbium fluoride, and barium fluoride, and the low refractive index material L is preferably ytterbium fluoride.

[0012] Furthermore, the number of layers of the thermal infrared dual-band camouflage and near-infrared spectrum regulation layer is 10 to 20, and the number of layers of the visible light-laser-near-infrared regulation layer is 8 to 15.

[0013] Furthermore, the thermal infrared dual-band camouflage and near-infrared spectrum regulation layer and the visible light-laser-near-infrared regulation layer are both a periodic structure, that is, the visible light-laser-infrared compatible film that imitates natural vegetation includes a substrate, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, ytterbium fluoride film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, ytterbium fluoride film, zinc sulfide film, and ytterbium fluoride film, which are stacked in sequence.

[0014] Furthermore, in the thermal infrared dual-band camouflage and near-infrared spectrum regulation layer, the thickness of the germanium film is 5 to 500 nm, the thickness of the ytterbium fluoride film is 100 to 500 nm, and the thickness of the zinc sulfide film is 8 to 500 nm;

[0015] And / or, in the visible light-laser-near infrared regulation layer, the thickness of the germanium film is 5 to 100 nm, the thickness of the ytterbium fluoride film is 80 to 200 nm, and the thickness of the zinc sulfide film is 5 to 150 nm.

[0016] Furthermore, in the thermal infrared dual-band camouflage and near-infrared spectrum regulation layer, the thicknesses of the zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, ytterbium fluoride film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, and germanium film are 196x nm, 35x nm, 11x nm, 420x nm, 144x nm, 461x nm, 161x nm, 61xnm, 44x nm, 37x nm, 436x nm, 11x nm, 15x nm, and 409x nm respectively, and the value range of x is 98%-102%, preferably 99%-100%.

[0017] For the thermal infrared dual-band camouflage and near-infrared spectrum regulation layer, when two dielectric materials with different refractive indices satisfy the following formula, the photonic band gap forms a high reflection band at the action wavelength:

[0018] n H d H =1 / 4λ,n L d L =1 / 4λ;

[0019] Among them, n H 、n L Represents the refractive index of high and low refractive index medium materials, d H d L It represents the thickness of high and low refractive index medium materials, and λ represents the effective wavelength.

[0020] Furthermore, in the visible light-laser-near infrared regulation layer, the thicknesses of the zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, ytterbium fluoride film, zinc sulfide film, and ytterbium fluoride film are 58x nm, 82x nm, 46xnm, 73x nm, 38x nm, 22x nm, 26x nm, 11x nm, 106x nm, 11x nm, 49xnm, 176x nm, 11x nm, and 99x nm, respectively, and the value range of x is 98%-102%, preferably 99%-100%.

[0021] Furthermore, the substrate is quartz glass or polyimide, which serves to support the multilayer film.

[0022] The present invention provides a visible light-laser-infrared compatible camouflage film that imitates natural vegetation. The film can simulate the visible light-near infrared spectral characteristics of natural vegetation, has the ability to adjust different visible light spectral colors (such as dark green, light green, withered yellow, etc.), and accurately reproduces the optical characteristics of natural vegetation. At the same time, it is compatible with 1.06μm laser camouflage and thermal infrared dual-band camouflage functions.

[0023] In general, the above technical solution conceived by the present invention has the following technical advantages compared with the prior art:

[0024] 1. The visible light-laser-infrared compatible film-compatible camouflage material that imitates natural vegetation provided by the present invention uses a plurality of dielectric materials with different refractive indices to alternately stack and construct a multilayer structure film, and performs spectral compatibility regulation of visible light, laser and infrared bands, so as to achieve the simulation of the visible light-near infrared spectral characteristics of natural vegetation and the low emissivity of the thermal infrared dual-band, and at the same time, the extremely low reflectivity at the 1.06μm near-infrared laser wavelength is achieved by controlling the thickness of the film layer. Among them, the thermal infrared dual-band camouflage and near-infrared spectral regulation layer is used to obtain the thermal infrared dual-band high reflection band and assist in regulating the waveform of the spectral characteristics of natural vegetation in the near-infrared range, so that the film layer structure has the thermal infrared dual-band low emissivity and improves its spectral similarity; the visible light-laser-near infrared regulation layer is used to achieve the spectral regulation of visible light-near infrared and the narrow-band absorption at 1.06μm, so that the film layer structure has laser camouflage performance and improves the spectral similarity of simulating natural vegetation.

[0025] 2. This multilayer film can not only realize the refined simulation of the reflection spectrum of natural vegetation in the visible light-near infrared wavelength range, but also has the function of adjusting different visible light spectrum colors (such as dark green, light green, withered yellow, etc.), countering infrared detectors and 1.06μm laser detectors, and can achieve visible light-laser-infrared multi-band compatible camouflage performance covering a wide wavelength range of 0.4 to 14μm, and the reflectivity at the 1.06μm wavelength is only less than 5%, which can achieve compatible camouflage performance against visible light detection, laser detection, and infrared detection in complex environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the visible light-laser-infrared compatible camouflage film in Example 1 of the present invention;

[0027] Figure 2 The simulated and measured reflection spectra of the visible light-laser-infrared compatible camouflage film in the visible light-near infrared band in Example 1 of the present invention;

[0028] Figure 3 The simulated reflection, transmission and absorption spectra of the visible light-laser-infrared compatible camouflage film in Example 1 of the present invention in the visible light-near infrared band;

[0029] Figure 4 The simulated and measured reflection spectra of the visible light-laser-infrared compatible camouflage film in the 2-16 μm band in Example 1 of the present invention;

[0030] Figure 5The simulated reflection, transmission and absorption spectra of the visible light-laser-infrared compatible camouflage film in the 2-16 μm band in Example 1 of the present invention;

[0031] Figure 6 This is a simulated reflection spectrum diagram of the visible light-laser-infrared compatible camouflage film in Examples 1-3 of the present invention in the visible light band. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] See also Figure 1 The present invention proposes a visible light-laser-infrared compatible camouflage film that imitates natural vegetation. The multilayer film structure includes, from bottom to top, a substrate, a thermal infrared dual-band camouflage and near-infrared spectrum regulation layer, and a visible light-laser-near-infrared regulation layer;

[0034] The bottom substrate plays a supporting role for the multilayer film and is a solid material or a flexible material, including but not limited to quartz glass, polyimide, etc. More preferably, it is quartz glass.

[0035] The thermal infrared dual-band camouflage (3-5μm and 8-14μm) and near-infrared spectrum control layer (1.1-2.5μm) are multilayer film structures composed of alternating dielectric materials with different refractive indices, which are used to obtain the thermal infrared dual-band high reflection band and assist in controlling the waveform of the simulated natural vegetation spectral characteristics in the near-infrared range, so that the film structure has a thermal infrared dual-band low emissivity and improves its spectral similarity. Preferably, the high refractive index material is germanium, the low refractive index material is ytterbium fluoride, and the medium refractive index material is preferably zinc sulfide. The thickness of the germanium layer is 5-500nm, the thickness of the ytterbium fluoride layer is 100-500nm, and the thickness of the zinc sulfide layer is 8-500nm.

[0036] The visible light-laser-near infrared regulation layer (0.4-1.1 μm) is a multilayer film structure composed of a plurality of dielectric materials with different refractive indices, including those with non-zero imaginary parts of refractive indices, which are alternately stacked. It can realize selective absorption of the visible light band and visible light-near infrared spectrum regulation and narrow-band absorption at 1.06 μm, so that the film structure has laser camouflage performance and improves its spectral similarity. Preferably, the high refractive index material is germanium, the low refractive index material is ytterbium fluoride, and the medium refractive index material is preferably zinc sulfide. The thickness of the germanium layer is 5-100 nm, the thickness of the ytterbium fluoride layer is 80-200 nm, and the thickness of the zinc sulfide layer is 5-150 nm.

[0037] The multi-layer film structure design of the present invention has the following advantages: First, it can simultaneously meet the visible light-near infrared spectral characteristics of natural vegetation simulation, 1.06μm narrowband high absorption, and thermal infrared dual-band high reflectivity, and can achieve compatible camouflage performance against visible light detection, laser detection, and infrared detection in complex environments; Second, the natural vegetation reflection spectrum simulation effect is good, and it has a high similarity with the natural vegetation spectrum characteristics in the visible light-near infrared range, and has the ability to adjust different visible light spectrum colors (such as dark green, light green, withered yellow, etc.); Third, the laser camouflage performance is good, and the reflectivity at a wavelength of 1.06μm is less than 5%.

[0038] In order to simulate the visible-near-infrared spectral characteristics of natural vegetation, four main features need to be paid attention to: "green peak", "red edge", "near-infrared plateau" and "water absorption peak". The "green peak" is a weaker reflectance peak in the reflectance spectrum near 550nm, and the reflectance is about 10%. This feature is related to the absorption characteristics of chlorophyll in green vegetation in the visible light band; the "red edge" is a steep slope formed by the rapid increase from low reflectance in the 680-750nm range of the spectral curve, and the reflectance increases from less than 10% to about 50%. This feature is related to the selective absorption of chlorophyll and the scattering of multi-layer cell walls. The reflectance spectrum shows a steep rise in the boundary band of the two mechanisms; the "near-infrared plateau" is a spectral curve with a higher reflectance platform in the near-infrared light region of 780-1300nm, and the reflectance is maintained at 50%-60%. This feature is related to the scattering of multi-layer cell walls inside the leaves; the "water absorption peak" is two strong absorption peaks generated near 1450nm and 1950nm, with reflectances less than 10%. This feature is related to the absorption characteristics of water in leaves.

[0039] When simulating the spectral reflectivity of natural plants, the high reflection band gap formed by zinc sulfide and germanium can be used to simulate the "near-infrared plateau" characteristics of 780-1300nm. Germanium is used to achieve strong resonant interference and selective absorption effects in the visible light band, thereby simulating the "green peak" and "red edge" characteristics. The natural vegetation camouflage film structure is formed by alternating stacking of germanium and zinc sulfide to form a quasi-periodic multilayer film structure, and ytterbium fluoride is added on the top as an anti-reflection layer to further adjust the interference effect to control the position of typical peaks and troughs, thereby adjusting the color of visible light. While ensuring the high reflectivity of the thermal infrared dual bands, the multilayer film must also have a high similarity with the natural vegetation reflection spectrum in the 400-2500nm band and extremely low reflectivity at a wavelength of 1.06μm, which puts higher requirements on the film system design. To this end, the structure, number of layers and thickness of each layer of the multilayer film are optimized to achieve the required target spectrum and meet the camouflage requirements of different bands.

[0040] Example 1

[0041] In this embodiment, a structure of a visible light-laser-infrared compatible camouflage film imitating natural vegetation includes, from bottom to top, a substrate, a thermal infrared dual-band camouflage and near-infrared spectrum regulation layer, and a visible light-laser-near-infrared regulation layer. The specific structure is as follows: Figure 1 shown.

[0042] In this embodiment, quartz glass is selected as the base material; the thermal infrared dual-band camouflage and near-infrared spectrum regulation layer is a 14-layer multi-layer film structure, from bottom to top: 196nm zinc sulfide, 35nm germanium, 11nm zinc sulfide, 420nm germanium, 144nm zinc sulfide, 461nm ytterbium fluoride, 161nm zinc sulfide, 61nm germanium, 44nm zinc sulfide, 37nm germanium, 436nm zinc sulfide, 11nm germanium, 15nm zinc sulfide, and 409nm germanium.

[0043] The visible light-laser-near-infrared regulation layer is a 14-layer multilayer film structure, from bottom to top: 58nm zinc sulfide, 82nm germanium, 46nm zinc sulfide, 73nm germanium, 38nm zinc sulfide, 22nm germanium, 26nm zinc sulfide, 11nm germanium, 106nm zinc sulfide, 11nm germanium, 49nm zinc sulfide, 176nm ytterbium fluoride, 11nm zinc sulfide, and 99nm ytterbium fluoride; the overall multilayer film structure (excluding the substrate) has a thickness of 3249nm.

[0044] The simulated and measured reflection spectra of the visible light-laser-infrared compatible camouflage multilayer film in the above embodiment in the visible light-near infrared band are shown in the figure. Figure 2 As shown, it can be seen that the multilayer film structure is highly similar to the reflectance spectrum of natural green vegetation in the visible light-near infrared band, with a green reflection peak at 550nm, a "red edge", a "near-infrared plateau" and a "water absorption peak", successfully achieving accurate simulation of typical spectral characteristics; at the same time, the reflectivity at the 1.06μm laser wavelength is less than 5%, which has good laser camouflage performance.

[0045] The visible light color of the multilayer film in Example 1 is dark green, and the chromaticity coordinates are (0.3535, 0.4476). By adjusting the thickness of ytterbium fluoride and zinc sulfide located at the top of the visible light-laser-near infrared regulation layer in the above Example 1, the reflection spectrum of the multilayer film structure in the visible light band (400-780nm) can be adjusted to design dead leaf yellow or other colors required to blend with the background while keeping the overall reflection spectrum no significant difference from the original structure. The thickness of ytterbium fluoride at the top layer of the visible light-laser-near infrared regulation layer in the above Example 1 is adjusted to obtain Examples 2 and 3. Due to the different thicknesses of ytterbium fluoride, the reflection peaks of the multilayer film in the visible light range have different positions, thereby obtaining different visible light colors (such as dark green, light green, withered yellow, etc.). The colors and chromaticity coordinates corresponding to Examples 1-3 are shown in Table 1, and the simulated reflection spectra of Examples 1-3 in the visible light band are shown in Table 1. Figure 6 shown.

[0046] Table 1 Surface ytterbium fluoride thickness and corresponding color properties of Examples 1-3

[0047]

[0048] The simulated and measured reflection spectra of the visible light-laser-infrared compatible camouflage film in the 2-16 μm band in the above embodiment 1 are shown in FIG. Figure 3 As shown, it can be seen that the multilayer film structure not only accurately simulates the typical spectrum of green vegetation and realizes laser camouflage, but also realizes high reflection bands in the thermal infrared dual bands. The average reflectivity in the mid-wave infrared and long-wave infrared is relatively high (corresponding to a lower average emissivity), and has good thermal infrared dual-band camouflage performance.

[0049] In summary, compared with the existing compatible camouflage materials, the compatible camouflage material provided by the present invention can simultaneously meet the visible light-near infrared simulated natural vegetation spectral characteristics, 1.06μm narrowband high absorption, and thermal infrared dual-band low emissivity, and can obtain simulated vegetation spectral characteristics under different visible light colors (such as dark green, light green, withered yellow, etc.), and achieve compatible camouflage performance against visible light detection, laser detection, and infrared detection in complex environments; not only does it have a high similarity with the natural vegetation spectral characteristics in the visible light-near infrared range, and the measured reflectivity at a wavelength of 1.06μm is extremely low, and the thermal infrared dual-band also has good camouflage performance.

[0050] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A visible light-laser-infrared compatible film that simulates natural vegetation, characterized in that: It includes a substrate, a thermal infrared dual-band camouflage and near-infrared spectrum regulation layer, and a visible light-laser-near-infrared regulation layer which are stacked in sequence; The thermal infrared dual-band stealth and near-infrared spectrum regulation layer is stacked and arranged in parallel to the substrate in a periodic order of MHMHMLMHMHMHMH, and the visible light-laser-near-infrared regulation layer is stacked and arranged in parallel to the thermal infrared dual-band stealth and near-infrared spectrum regulation layer in a periodic order of MHMHMHMHMHMLML; Among them, H represents a high refractive index material with a refractive index of 3.5-5, M represents a medium refractive index material with a refractive index of 2.1-2.8, and L represents a low refractive index material with a refractive index of 1.3-2.

2. The visible light-laser-infrared compatible film simulating natural vegetation according to claim 1, characterized in that: The high refractive index material H is one of germanium, selenium, tellurium, silicon, and silicon carbide; the medium refractive index material M is zinc sulfide; and the low refractive index material L is one of aluminum oxide, silicon dioxide, magnesium fluoride, ytterbium fluoride, and barium fluoride.

3. The visible light-laser-infrared compatible film simulating natural vegetation according to claim 2, characterized in that: The visible light-laser-infrared compatible film imitating natural vegetation includes a substrate, a zinc sulfide film, a germanium film, a zinc sulfide film, a germanium film, a zinc sulfide film, a ytterbium fluoride film, a zinc sulfide film, a germanium film, a zinc sulfide film, a germanium film, a zinc sulfide film, a germanium film, a zinc sulfide film, a germanium film, a zinc sulfide film, a germanium film, a zinc sulfide film, a germanium film, a zinc sulfide film, a germanium film, a zinc sulfide film, a germanium film, a zinc sulfide film, a germanium film, a zinc sulfide film, a germanium film, a zinc sulfide film, a germanium film, a zinc sulfide film, a germanium film, a zinc sulfide film, a ytterbium fluoride film, a zinc sulfide film, and a ytterbium fluoride film, which are stacked in sequence.

4. The visible light-laser-infrared compatible film simulating natural vegetation according to claim 3, characterized in that: In the thermal infrared dual-band camouflage and near-infrared spectrum regulation layer, the thickness of the germanium film is 5 to 500 nm, the thickness of the ytterbium fluoride film is 100 to 500 nm, and the thickness of the zinc sulfide film is 8 to 500 nm; And / or, in the visible light-laser-near infrared regulation layer, the thickness of the germanium film is 5 to 100 nm, the thickness of the ytterbium fluoride film is 80 to 200 nm, and the thickness of the zinc sulfide film is 5 to 150 nm.

5. The visible light-laser-infrared compatible film simulating natural vegetation according to claim 4, characterized in that: In the thermal infrared dual-band camouflage and near-infrared spectrum regulation layer, the thicknesses of the zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, ytterbium fluoride film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, and germanium film are 196x nm, 35x nm, 11x nm, 420x nm, 144x nm, 461x nm, 161x nm, 61x nm, 44x nm, 37x nm, 436x nm, 11x nm, 15x nm, and 409x nm respectively, and the value range of x is 98%-102%.

6. The visible light-laser-infrared compatible film simulating natural vegetation according to claim 4, characterized in that: In the visible light-laser-near infrared regulation layer, the thicknesses of the zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, germanium film, zinc sulfide film, ytterbium fluoride film, zinc sulfide film, and ytterbium fluoride film are 58x nm, 82x nm, 46x nm, 73x nm, 38x nm, 22x nm, 26x nm, 11x nm, 106x nm, 11x nm, 49x nm, 176xnm, 11x nm, and 99x nm respectively, and the value range of x is 98%-102%.

7. The visible light-laser-infrared compatible film simulating natural vegetation according to claim 1, characterized in that: The substrate is quartz glass or polyimide.

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