Window with low radar scattering area

Abstract

The invention discloses a low radar scattering area window, which comprises a glass frame, a plurality of windows are formed on the glass frame, left front glass, right front glass, left side glass, right side glass, right rear glass, bottom surface glass and left rear glass are respectively assembled in the plurality of windows, the surface of each window is plated with a metal mesh, and the side surface of each window is plated with an electrode. The electrode is connected with the glass frame through conductive adhesive so that the window forms a metal conduction body. According to the invention, the structure is simple, the glass and the frame adopt a spliced shape design, electromagnetic wave specular reflection and edge diffraction are reduced, the surface of the glass is plated with a metal grid with high conductivity, electromagnetic waves are shielded, the glass frame is a metal frame plated with a metasurface, and a wave-absorbing material is sprayed, so that the amplitude and phase of the electromagnetic waves are regulated and controlled; the radar scattering area of the window is reduced; and electromagnetic waves are suppressed by adopting a concentration and absorption processing mode, so that the scattering area of the aviation equipment radar with the window is reduced, and the stealth performance of the aviation equipment radar is improved.

Description

Technical Field

[0001] The present invention relates to the field of optical-mechanical technology, and in particular to a low radar scattering area window. Background Art

[0002] Modern warfare has entered an era of "detection means hit, hit means destruction". The role of stealth technology in modern warfare is self-evident. As a prominent part of the optical system of aviation equipment, the radar scattering area (RCS) of the window directly affects the stealth performance of the entire aircraft. The optoelectronic system is the most important detection, reconnaissance, and guidance equipment for aviation equipment. It is the "eyes" of aviation equipment and poses a huge threat to the survivability and penetration capability of aviation equipment itself. Reducing the RCS of the optoelectronic system window is crucial to resolving the contradictions between reconnaissance and counter-reconnaissance, detection and counter-detection, precision strike and penetration capabilities.

[0003] The protruding structure of the traditional exposed optoelectronic system greatly increases the RCS of the equipment, resulting in poor stealth performance of the equipment, which is easy to be discovered by the enemy. For stealth equipment, it is necessary to eliminate various protrusions and bulges on the surface of the equipment as much as possible. Therefore, the optoelectronic system adopts an internal structure, which is hidden in the belly of the aircraft to minimize the RCS of the aviation equipment. The window is the only exposed part of the optoelectronic system. The design result directly affects the stealth characteristics of the entire aircraft.

[0004] Based on the above technical problems, technicians in this field urgently need to develop a low radar scattering area window with a simple structure, which uses concentration and absorption processing methods to suppress electromagnetic waves and can effectively improve stealth performance. Summary of the invention

[0005] The purpose of the present invention is to provide a low radar scattering area window which has a simple structure, suppresses electromagnetic waves by a concentration and absorption processing method, and can effectively improve stealth performance.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A low radar scattering area window of the present invention comprises:

[0008] A glass frame is formed with a plurality of windows, wherein the plurality of windows are respectively equipped with a left front glass, a right front glass, a left side glass, a right side glass, a right rear glass, a bottom glass and a left rear glass, each piece of glass is made of optical glass material, and the surface is plated with a metal grid, and the side is plated with electrodes, and the electrodes are connected to the glass frame through conductive glue so that the windows form a metal conductive body; wherein,

[0009] The left front glass and the right front glass are symmetrically distributed along the central cross section;

[0010] The left glass and the right glass are symmetrically distributed along the central section;

[0011] The right rear glass and the left rear glass are symmetrically distributed along the central cross section.

[0012] Furthermore, the glass frame is sprayed with absorbing material, which can absorb and attenuate electromagnetic waves, so as to convert electromagnetic energy into heat energy.

[0013] Preferably, the glass frame is plated with a metasurface, and the degree of freedom is controlled by the metasurface.

[0014] Preferably, the left front glass, right front glass, left side glass, right side glass, right rear glass, bottom glass and left rear glass are all made of ZnS, and each piece of glass and the glass frame are assembled with silicone rubber and conductive adhesive.

[0015] Preferably, the metal grid is made of Au.

[0016] In the above technical solution, the low radar scattering area window provided by the present invention has the following beneficial effects:

[0017] The low radar scattering area window of the present invention has a simple structure, and the glass and the frame adopt a spliced ​​appearance design to reduce the specular reflection and edge diffraction of electromagnetic waves. Each piece of glass and the glass frame are fixed with silicone rubber and conductive glue to ensure overall reliability and stability. The glass surface is plated with a highly conductive metal mesh to shield electromagnetic waves. The glass frame is a metal frame plated with a superstructure surface and sprayed with absorbing materials to achieve the regulation of the amplitude and phase of the electromagnetic waves, reducing the radar scattering area of ​​the window. The present invention adopts a concentration and absorption processing method to suppress electromagnetic waves, reducing the radar scattering area of ​​aviation equipment with windows and improving its stealth performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of the overall structure of a low radar scattering area window provided by an embodiment of the present invention;

[0020] Figure 2 A structural diagram of a metal grid in a low radar scattering area window provided by an embodiment of the present invention.

[0021] Description of reference numerals:

[0022] 1. Glass frame; 2. Left front glass; 3. Right front glass; 4. Left side glass; 5. Right side glass; 6. Right rear glass; 7. Bottom glass; 8. Left rear glass; 9. Metal grid. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] See also Figure 1-2 As shown;

[0025] A low radar scattering area window of the present invention comprises:

[0026] A glass frame 1 is formed with a plurality of windows, wherein the plurality of windows are respectively equipped with a left front glass 2, a right front glass 3, a left side glass 4, a right side glass 5, a right rear glass 6, a bottom glass 7 and a left rear glass 8, each piece of glass is made of optical glass material, and the surface is plated with a metal grid 9, and the side is plated with electrodes, and the electrodes are connected to the glass frame 1 through a conductive adhesive so that the window forms a metal conductor, and the metal grid 9 exhibits different diffraction characteristics when electromagnetic waves of different wavelengths are incident due to its submillimeter scale period and micrometer-level line width, and for microwave and radio wavelengths, the electromagnetic wavelength is greater than the grid period, and most of the electromagnetic waves are reflected to make the metal grid 9 exhibit electromagnetic shielding characteristics, and the window is equivalent to metallization treatment, which realizes the isolation of electromagnetic waves inside and outside the window, prevents external electromagnetic interference and internal electromagnetic leakage, and effectively reduces the radar scattering area; wherein,

[0027] The left front glass 2 and the right front glass 3 are symmetrically distributed along the central cross section;

[0028] The left glass 4 and the right glass 5 are symmetrically distributed along the central cross section;

[0029] The right rear glass 6 and the left rear glass 8 are symmetrically distributed along the central cross section. According to the electromagnetic wave reflection angle domain, the relevant angle between the two symmetrical glasses is determined by centralized processing.

[0030] As a further introduction to this embodiment, the glass frame 1 is sprayed with absorbing material, and an absorption treatment method is adopted to absorb and attenuate electromagnetic waves, so that electromagnetic energy is converted into heat energy.

[0031] As a preferred technical solution of this embodiment, the glass frame 1 is plated with a metasurface, which is a sub-wavelength artificial electromagnetic structure with a characteristic size smaller than the wavelength of the electromagnetic wave. It can realize the electromagnetic response of traditional natural materials and composite materials on a two-dimensional scale, and can achieve the control of degrees of freedom by changing the amplitude and phase of the electromagnetic wave. The metasurface is used to change the duty cycle of the material in the direction of electromagnetic wave transmission or to arrange the film layers of different materials periodically or non-periodically to enhance the electric field strength at a specific frequency, thereby achieving efficient absorption of electromagnetic waves.

[0032] As a preferred technical solution of this embodiment, the left front glass 2, the right front glass 3, the left side glass 4, the right side glass 5, the right rear glass 6, the bottom glass 7 and the left rear glass 8 are all made of ZnS, and each piece of glass and the glass frame 1 are assembled with silicone rubber and conductive glue.

[0033] As a preferred technical solution of this embodiment, the material of the metal grid 9 is Au.

[0034] In the above technical solution, the low radar scattering area window provided by the present invention has the following beneficial effects:

[0035] The low radar scattering area window of the present invention has a simple structure, and the glass and the frame adopt a spliced ​​appearance design to reduce the specular reflection and edge diffraction of electromagnetic waves. Each piece of glass and the glass frame are fixed with silicone rubber and conductive glue to ensure overall reliability and stability. The glass surface is plated with a highly conductive metal mesh to shield electromagnetic waves. The glass frame is a metal frame plated with a superstructure surface and sprayed with absorbing materials to achieve the regulation of the amplitude and phase of the electromagnetic waves, reducing the radar scattering area of ​​the window. The present invention adopts a concentration and absorption processing method to suppress electromagnetic waves, reducing the radar scattering area of ​​aviation equipment with windows and improving its stealth performance.

[0036] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A low radar scattering area window, characterized in that: The scattering area window includes: A glass frame (1) is formed with a plurality of windows, wherein the plurality of windows are respectively equipped with a left front glass (2), a right front glass (3), a left side glass (4), a right side glass (5), a right rear glass (6), a bottom glass (7) and a left rear glass (8), each piece of glass is made of optical glass material, and the surface is plated with a metal grid (9), and the side is plated with electrodes, and the electrodes are connected to the glass frame (1) through conductive glue so that the windows form metal conductive bodies; wherein, The left front glass (2) and the right front glass (3) are symmetrically distributed along the central cross section; The left glass (4) and the right glass (5) are symmetrically distributed along the central cross section; The right rear glass (6) and the left rear glass (8) are symmetrically distributed along the central cross section.

2. A low radar scattering area window according to claim 1, characterized in that: The glass frame (1) is sprayed with wave-absorbing material, which can absorb and attenuate electromagnetic waves, so as to convert electromagnetic energy into heat energy.

3. The low radar scattering area window according to claim 1, characterized in that: The glass frame (1) is plated with a meta-structure surface, and the degree of freedom can be regulated by the meta-structure surface.

4. The low radar scattering area window according to claim 1, characterized in that: The left front glass (2), the right front glass (3), the left side glass (4), the right side glass (5), the right rear glass (6), the bottom glass (7) and the left rear glass (8) are all made of ZnS, and each piece of glass and the glass frame (1) are assembled using silicone rubber and conductive adhesive.

5. The low radar scattering area window according to claim 1, characterized in that: The material of the metal grid (9) is Au.

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