RU2779572C1 - Apparatus for adaptive camouflage of objects - Google Patents

Abstract

FIELD: optics.

SUBSTANCE: invention relates to means of camouflage, namely, camouflage of stationary and mobile objects. Proposed is an apparatus for adaptive camouflage of objects, consisting of a screen in the form of a closed structure containing light guides, matching the shape of the camouflaged object and installed on the surface thereof. Optical systems are introduced at the ends of the light guides placed in said structure. The systems consist of a body, as well as two lenses and an input and output element, placed therein in sequence.

EFFECT: effective camouflage.

1 cl, 2 dwg

Description

The invention relates to means for masking stationary and moving objects, including for masking aircraft from visual and optoelectronic surveillance equipment operating in the visible wavelength range.

A device for masking (analogue) [RU 2008126881 A, 01/10/2010] is known, located on the surface of a masked object, made in the form of a multilayer matrix, which is an organic light-emitting surface to which video cameras are connected. Such a device implements the ability to display an image received from video cameras.

The analogue has a number of disadvantages, which are:

- in low efficiency of masking at an unknown position of the observer;

- in the complexity of technical feasibility, large weight and overall dimensions of the equipment.

The closest in technical essence is a device that implements the method of all-aspect adaptive masking of objects from the means of visual and optoelectronic surveillance (prototype) [RU 2650275 C2, 11.04.2018]. Device for adaptive masking of objects, consisting of a vertical screen in the form of a closed structure with light guides placed in it, the ends of which are brought to the outer surface of the screen in diametrically located directions relative to the masked object.

The prototype has a number of disadvantages, which are:

- the impossibility of providing effective masking of moving objects for different viewing angles, in view of the fact that the prototype works effectively only when the observer is placed on the earth's surface and strictly along the normal to the vertical screen;

- in the impossibility of using a vertical screen, which is installed permanently, as a means of masking for moving objects.

The technical result of the invention is to ensure the effectiveness of masking stationary and moving objects from visual and optoelectronic surveillance at different viewing angles in the visible wavelength range due to the formation of a brightness-color image of the background on its surface, which is screened by the object.

This technical result is achieved due to the fact that in a known device, consisting of a screen in the form of a closed structure with light guides placed in it, the ends of which are brought to the outer surface of the screen in diametrically located directions relative to the masked object, characterized in that the closed structure is made in the form masked object and installed on its surface, and optical systems are installed at the ends of the light guides.

The essence of the invention consists in increasing the efficiency of masking stationary and moving objects at different viewing angles of visual and optoelectronic reconnaissance means due to the fact that a closed structure is made in the shape of a masked object and is installed on its surface and optical systems are introduced at the ends of the light guides, which narrow the light fluxes of optical radiation coming from the outer side of the screen - to the light guides and expands the light fluxes coming from the inside of the screen - from the light guides.

In other words, the observer looks at the masked object, but sees the background behind the object. At the same time, the quality of masking does not decrease at different observation angles for stationary and moving objects.

In FIG. 1 shows a block diagram of the device for adaptive masking of objects, where it is indicated: 1 - a screen in the form of a closed structure; 2 - light guides; 3 - optical system.

The screen in the form of a closed structure 1 is made in the form of a masked aircraft and is located on its surface. Optical systems 3 are connected to the ends of the light guides 2. Optical systems 3 are placed on the outer surface of the screen in the form of a closed structure 1 and are located in diametrical directions relative to the masked object.

The purpose of the elements presented in the diagram is clear from their names.

The optical system 3 is designed to expand the viewing angle when receiving and transmitting an optical signal by redistributing the light fluxes of optical radiation in the light guide and space.

The claimed device works similarly to the prototype with some differences, which are as follows.

The optical system 3 narrows the light fluxes of optical radiation coming from the outside - to the light guide and expands the light fluxes coming from the inside - from the light guides. This achieves an increase in the effectiveness of masking objects at different angles of observation of visual and optical-electronic reconnaissance.

The execution of the screen of a closed design according to the shape of the masked object and placement on its surface provides an increase in the efficiency of masking moving objects.

In FIG. Figure 2 shows an embodiment of the optical system 3, where it is indicated: 2 - light guide, 4 - diverging lens, 5 - converging lens, 6 - input-output device.

As a diverging lens 4 can be used, for example, a doubly concave lens [see, for example, Polytechnic dictionary / chapters. ed. A.Yu. Ishlinsky. - 3rd ed. - M.: Soviet Encyclopedia, 1989, pp. 269-270].

As a converging lens 5 can be used, for example, a doubly convex lens [see, for example, Polytechnic dictionary / chapters. ed. A.Yu. Ishlinsky. - 3rd ed. - M.: Soviet Encyclopedia, 1989, pp. 269-270].

The input-output device 6 is designed to match the optical signals coming from the optical system 3 to the fiber 2 and from the fiber 2 to the optical system 3. The input-output device 6 can be made in the form of an optical collimator [see, for example, Sharvarko V.G. . Fiber-optic communication lines: Textbook. - Taganrog: Publishing House of TRTU, 206, p. 122].

Structurally, the elements of the optical system 3 are placed coaxially in a single housing. In this case, the distance between the diverging lens 4 and the converging lens 5 is chosen equal to two focal lengths of the diverging lens 4, and the distance from the center of the diverging lens 4 to the center of the input-output device 6 should not be less than the sum of the focal lengths of the diverging lens 4 and the input-output device 6 In addition, the ratio of the focal lengths of the converging lens 5 and the diverging lens 4 is chosen to be 1:6. [see, for example, Andreev A.N., Gavrilov E.V., Ishanin G.G. etc. Optical measurements. - M.: University book; Logos, 2008, pp. 103-105].

Claims (1)

A device for adaptive masking of objects, consisting of a screen in the form of a closed structure with light guides placed in it, the ends of which are brought to the outer surface of the screen in diametrically located directions relative to the masked object, characterized in that the closed structure is made in the form of a masked object and installed on its surface, and at the ends of the light guides, optical systems are installed, consisting of a housing in which the scattering and collecting lenses and the input and output element are coaxially arranged in series.

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