Infrared camouflage material

A stealth material, infrared technology, applied in the field of infrared stealth

Active Publication Date: 2017-02-08
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional infrared stealth materials, because they contain a certain proportion of metal doping, will inevitably have a certain negative impact on the transmittance of the radome

Method used

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  • Infrared camouflage material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Fabrication of Alternately Arranged YbF on Substrate by Ion Beam Sputtering 3 film and ZnSe film, the bottom and top layers are both YbF 3 The number of layers of the multilayer film is 33, and the thickness of the film from the bottom layer is 0.97453 μm, 0.64834 μm, 0.39490 μm, 0.44593 μm, 0.43009 μm, 0.54081 μm, 1.10301 μm, 0.12082 μm, 0.66528 μm, 0.61058 μm ,0.90684μm,0.10666μm,0.83247μm,0.57832μm,0.7648μm,0.17861μm,0.81283μm,0.44699μm,1.91144μm,1.02709μm,0.68401μm,0.26756μm,0.50729μm,0.40487μm,1.026μm,0.05128μm,0.56253 μm, 1.24633μm, 0.48934μm, 0.44942μm, 0.39864μm, 0.29366μm, 1.63612μm.

[0031] The prepared infrared stealth material flat sample such as figure 1 shown.

[0032] The infrared stealth performance of the infrared stealth material was tested and verified by Fourier transform infrared spectrometer, and the comparison chart of the emissivity simulation and test curve in the infrared band was obtained, as shown in figure 2 shown. from figure 2It c...

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Abstract

The invention provides an infrared camouflage material which is formed by laminating multiple films. The films include YbF3 and ZnSe films which are arranged alternatively, and the thickness of either the YbF3 film or the ZnSe film equals 1 / 4 of the central wavelength. Compared with the prior art, ZnSe and YbF3 serve as base materials, the refractive index of the ZnSe base material is different from that of the YbF3 material, a multi-layer combined film structure is coated in a laminated manner in each 1 / 4 central wavelength, light beams reflected in all interfaces of the film structure have the same phase when returning to the front surface, constructive interference is generated, and high reflection of infrared energy of the corresponding central wavelength can be realized; the infrared camouflage material has no negative influence on transmission of radar waves, and is highly compatible with the hidden performance of radars; and is low in emitting rate in an intermediate and long wave atmosphere window, realizes an infrared camouflage function, is high in the emission rate beyond the atmosphere window, and can cool and take away heat from an object.

Description

technical field [0001] The invention belongs to the technical field of infrared stealth, and in particular relates to an infrared stealth material. Background technique [0002] The radome is the external window of the aircraft and other equipment, and it is also the guarantee for the radar to realize the functions of positioning, navigation and precise guidance. Therefore, in addition to the function of protecting the radar, the radome is required to have a good penetration effect on the electromagnetic waves in the radar's own working band. [0003] At this stage, as the flight speed of the aircraft continues to increase, the speed of the hypersonic aircraft has reached Mach 6 or above. The radome on the head of the aircraft has become the main infrared detection source due to the high temperature generated by friction. Therefore, the infrared stealth of the radome on the head of the aircraft is important. increasingly prominent. Traditional infrared stealth materials, be...

Claims

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Application Information

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IPC IPC(8): G02B5/28
CPCG02B5/208G02B5/281
Inventor 汤洋高劲松王笑夷
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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