Multilayer film for hyperspectral-laser stealth

Abstract

The invention discloses a multilayer film for hyperspectral-laser stealth, and belongs to the technical field of hyperspectral-laser stealth. The high-spectrum-laser compatible stealth structure sequentially comprises a high-spectrum-laser compatible stealth layer, a visible light anti-reflection absorption dielectric film layer and a visible light color regulation and control layer from bottom to top. The hyperspectral-laser compatible stealth layer comprises multiple layers of dielectric materials with different refractive indexes, and the multiple layers of dielectric materials are alternately stacked; the refractive index imaginary part of the visible light anti-reflection absorption dielectric film layer material is not zero, and the visible light anti-reflection absorption dielectric film layer material is used for achieving selective high absorption of visible light wave bands. The refractive index of a dielectric material of the visible light color regulation and control layer is smaller than that of the visible light anti-reflection absorption dielectric film layer, and the color of the surface of the visible light color regulation and control layer changes along with the thickness of the material of the visible light color regulation and control layer. According to the invention, high reflection of 0.8-1.3 [mu] m near-infrared plateau and low reflection of normal incidence 1.06 [mu] m laser are realized, the high spectrum-laser compatible stealth performance is realized, and visible light stealth requirements in different environments can be met.

Description

technical field [0001] The invention belongs to the technical field of hyperspectral-laser stealth, and more particularly relates to a multilayer film for hyperspectral-laser stealth. Background technique [0002] In modern high-tech warfare, the development of advanced detection technologies such as hyperspectral and laser has enhanced the ability to identify and strike ground military targets, posing a strong threat to the combat effectiveness of ground military targets. [0003] Hyperspectral detection technology is an advanced optical detection technology that can accurately measure the spectral characteristics of each pixel in the reconnaissance image. The hyperspectral detection technology identifies traditional visible light stealth targets by measuring and analyzing the differences in spectral characteristics between different pixel points (such as plants, paints, plastics, etc.) shape. Hyperspectral reconnaissance poses a huge threat to traditional optical stealth...

AI Technical Summary

Problems solved by technology

However, the narrow-band absorption of the 1.06 μm laser is contradictory to the broadband high reflection of the 0.8-1.3 μm “near-infrared plateau” required for hyperspectral stealth

The reason is that the conventional 1.06μm laser absorbing materials (rare earth elements, etc.) are all broadband absorption, which will destroy the broadband reflection characteristics of the "near-infrared plateau", because the two requirements are difficult to achieve at the same time, and hyperspectral-laser compatible stealth lacks effective control means

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