A mirror tower type infrared search system

Abstract

The present application provides a mirror tower type infrared search system, comprising an optical window assembly, a pitch swing mirror assembly, an image shift compensation assembly, an azimuth adapter, a base, an azimuth drive module, a mirror assembly and an infrared imager. The present application changes the traditional optical path layout, installs the infrared imager on the fixed part, has a small rotation radius, can reduce the volume and weight of the azimuth rotating part of the infrared search system, realizes miniaturization design, effectively improves the space utilization, and can be installed in the vehicle, ship or airplane. The present application can be applied to the platform of vehicle, airplane and ship, realizes infrared all-round search, can be integrated with laser interference equipment, changes the laser path pointing angle to complete laser interference on the target, realizes product serialization and generalization, and has popularization significance.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of photoelectric detection, and particularly relates to a mirror tower type infrared search system. BACKGROUND

[0002] With the development of photoelectric devices, the implementation methods of photoelectric detection are more and more diversified. Among them, the infrared search system is a typical photoelectric detection system, which is an imaging detection device working in a passive mode. The infrared imager is driven by a photoelectric turntable to rotate along the azimuth axis 0-360° to obtain a panoramic image around the infrared imager, and the position information of the target is reported through the extraction and identification of the infrared radiation characteristics. The current infrared search system generally includes a photoelectric turntable, an infrared imager, an image motion compensation mechanism, an information processing module, etc., and can be carried on a vehicle, an airplane, etc. platform to realize reconnaissance, aiming and other functions.

[0003] The existing infrared search system has the following shortcomings: 1. The infrared imager is carried in the load cabin inside the photoelectric turntable, and rotates 360° along the azimuth axis, resulting in a large size and weight of the whole system; 2. The cabin body of the rotating part of the photoelectric turntable is large, the rotation radius is large, and the space utilization rate outside the vehicle platform is low; 3. The maintainability is poor, especially after the infrared imager is removed, the optical precision of the original optical path is damaged, and it is difficult to restore. SUMMARY

[0004] (I) Technical problem to be solved

[0005] The application provides a mirror tower type infrared search system to solve the technical problem of how to reduce the volume and improve the space utilization rate.

[0006] (II) Technical scheme

[0007] In order to solve the above technical problems, the application provides a mirror tower type infrared search system, which comprises an optical window assembly, a pitch swing mirror assembly, an image motion compensation assembly, an azimuth adapter, a base, an azimuth drive module, a mirror assembly and an infrared imager; wherein,

[0008] The optical window assembly is installed on the upper surface of the azimuth adapter; the pitch swing mirror assembly and the image motion compensation assembly are respectively installed on the upper surface of the azimuth adapter and located inside the optical window assembly; the stator part of the azimuth drive module is installed on the top inner wall of the base; the azimuth adapter is installed on the rotor part of the azimuth drive module; and the mirror assembly and the infrared imager are respectively installed inside the base.

[0009] The optical window assembly is composed of an optical window and a structure, and the structure is provided with the optical window for transmitting fixed wavelength, the structure is fixedly connected with the azimuth adapter and forms a sealed cabin with the azimuth adapter to protect the components in the cabin from the influence of the external environment;

[0010] The pitch swing mirror assembly adopts a mirror assembly, and a driving module of the pitch swing mirror assembly drives the mirror assembly to rotate along a pitch axis by receiving an instruction, so as to adjust the pitch direction of the incident light of the external target of the infrared search system;

[0011] The image shift compensation assembly adopts an electromechanical assembly, and can drive the internal mirror to reciprocate along the azimuth axis at a high speed within the exposure time of the infrared imager according to an external instruction when the infrared search system continuously rotates, so as to compensate the motion of the incident light of the external target entering through the pitch swing mirror assembly, and ensure that the external scene does not change within the exposure time of the infrared imager;

[0012] The azimuth adapter is fixed with the optical window assembly to form a sealed cabin, and the lower surface of the azimuth adapter is mounted with the rotor part of the azimuth driving module to realize 360° continuous rotation along the azimuth axis with the rotor part of the azimuth driving module;

[0013] The base is used to provide mechanical support for the entire infrared search system and provide a mechanical mounting interface to the outside;

[0014] The azimuth driving module is an electromechanical assembly, including a driving motor and a sensor, and the rotor part after the split motor and the sensor are assembled into a shafting is fixed with the azimuth adapter to drive the azimuth adapter to rotate, and the stator part is mounted on the base; the azimuth driving module can rotate along the azimuth axis according to an external instruction;

[0015] The mirror assembly is used to realize 90° folding of the incident light of the external target and enter the infrared imager;

[0016] The infrared imager is a photoelectric conversion device, which is used to convert the incident light of the external target entering through the mirror assembly from an infrared radiation signal into an electric signal, and output a specific format image to realize target detection.

[0017] Further, the optical window assembly is mounted on the upper surface of the azimuth adapter by screws.

[0018] Further, the stator part of the azimuth driving module is mounted on the top inner wall of the base by screws, and the azimuth adapter is mounted on the rotor part of the azimuth driving module by screws.

[0019] Further, the azimuth adapter adopts a metal structural member.

[0020] Further, the base is a metal structural member.

[0021] Further, the mirror assembly includes a metal structural member and an optical mirror, and the optical mirror is mounted on the metal structural member.

[0022] Further, the infrared imager is a photoelectric conversion device, mainly comprising a structural member and a photoelectric component assembly.

[0023] (III) Beneficial Effects

[0024] The present application provides a mirror tower type infrared search system, comprising an optical window assembly, a pitch mirror assembly, an image shift compensation assembly, an azimuth adapter, a base, an azimuth drive module, a mirror assembly and an infrared imager. The present application changes the traditional optical path layout, installs the infrared imager on the fixed part, has a small rotation radius, can reduce the volume and weight of the azimuth rotating part of the infrared search system, realizes miniaturization design, effectively improves the space utilization, and can be installed in the interior of a vehicle, ship or aircraft, can reduce the area of the exposed part, installs the infrared imager at the end of the optical system, has less influence on the front end optical path after disassembly, and has good maintainability. The present application can be applied to the platforms of vehicles, aircrafts and ships, realizes infrared panoramic search, can also be integrated with laser jamming equipment, changes the laser path pointing angle to complete laser jamming on the target, realizes product serialization and generalization, has remarkable effects, and has popularization significance. BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1 Figure 1 is a schematic diagram of the mirror tower type infrared search system of the present application;

[0026] Fig. 2 Figure 2 is a schematic diagram of the internal structure of the mirror tower type infrared search system of the present application;

[0027] Fig. 3 Figure 3 is a schematic diagram of the whole mirror tower type infrared search system of the present application (without the optical window assembly). DETAILED DESCRIPTION

[0028] In order to make the purpose, content and advantages of the present application clearer, the specific embodiments of the present application are further described in detail below in combination with the drawings and examples.

[0029] The present embodiment provides a mirror tower type infrared search system, which has the structure as shown in Figs. 1-3 The system comprises an optical window assembly 1, a pitch mirror assembly 2, an image shift compensation assembly 3, an azimuth adapter 4, a base 5, an azimuth drive module 6, a mirror assembly 7 and an infrared imager 8.

[0030] The optical window assembly 1 is mounted on the upper surface of the azimuth adapter 4 by screws, the pitch swing mirror assembly 2 and the image shift compensation assembly 3 are respectively mounted on the upper surface of the azimuth adapter 4 by screws and are located inside the optical window assembly 1. The stator part of the azimuth drive module 6 is mounted on the top inner wall of the base 5 by screws; the azimuth adapter 4 is mounted on the rotor part of the azimuth drive module 6 by screws. The mirror assembly 7 and the infrared imager 8 are respectively mounted in the base 5 by screws.

[0031] The optical window assembly 1 is mainly composed of an optical window and a structural member, the optical window of a fixed wavelength is mounted on the structural member, and the structural member is fixedly connected with the azimuth adapter 4 by screws and forms a sealed cabin with the azimuth adapter 4 to protect the components in the cabin from the influence of the external environment.

[0032] The pitch swing mirror assembly 2 adopts a mirror assembly, and the drive module of the pitch swing mirror assembly 2 drives the mirror assembly to rotate along the pitch axis by a certain angle according to the received instructions, so as to adjust the pitch direction of the incident light of the external target of the infrared search system.

[0033] The image shift compensation assembly 3 adopts an electromechanical assembly, which can drive the internal mirror to reciprocate along the azimuth axis at a high speed within the exposure time of the infrared imager when the infrared search system continuously rotates according to the external instructions, so as to compensate the motion of the external target incident light entering through the pitch swing mirror assembly 2, so as to ensure that the external scene does not change within the exposure time of the infrared imager 8.

[0034] The azimuth adapter 4 adopts a metal structural member, which is fixedly connected with the optical window assembly 1 to form a sealed cabin, and the lower surface of the azimuth adapter 4 is mounted with the rotor part of the azimuth drive module 6, which rotates along the azimuth axis with the rotor part of the azimuth drive module 6.

[0035] The base 5 is a metal structural member, which is mainly used to provide mechanical support for the entire infrared search system and provide a mechanical mounting interface to the outside.

[0036] The azimuth drive module 6 is an electromechanical assembly, which includes a drive motor and a sensor, and the rotor part after the split motor and the sensor are assembled into a shaft system is fixedly connected with the azimuth adapter 4 to drive the azimuth adapter 4 to rotate, and the stator part is mounted on the base 5. The azimuth drive module 6 can rotate along the azimuth axis according to the external instructions.

[0037] The mirror assembly 7 mainly includes a metal structural member and an optical mirror, and the optical mirror is mounted on the metal structural member and used to realize 90° folding of the external target incident light and enter the infrared imager 8.

[0038] The infrared imager 8 is a photoelectric conversion device, mainly comprising a structural member and a photoelectric component assembly, the photoelectric component assembly is installed on the structural member, and is used for converting external target incident light entering via the mirror assembly 7 into an electric signal by infrared radiation signal, and outputting a specific format image to realize target detection.

[0039] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be considered as the protection scope of the present application.

Claims

1. A mirror tower type infrared search system, characterized in that, The mirror tower-type infrared search system includes an optical window assembly, a pitch mirror assembly, an image shift compensation assembly, an azimuth adapter, a base, an azimuth drive module, a reflector assembly, and an infrared imager; wherein... The optical window assembly is mounted on the upper surface of the azimuth adapter; the pitch mirror assembly and the image shift compensation assembly are respectively mounted on the upper surface of the azimuth adapter and are located inside the optical window assembly; the stator part of the azimuth drive module is mounted on the top inner wall of the base; the azimuth adapter is mounted on the mover part of the azimuth drive module; the reflector assembly and the infrared imager are respectively mounted inside the base. The optical window assembly consists of an optical window and a structural component. The structural component is equipped with an optical window that transmits a fixed wavelength. The structural component is fixedly connected to the azimuth adapter and forms a sealed chamber with the azimuth adapter to protect the components inside the chamber from the influence of the external environment. The pitch mirror assembly is a reflector assembly. The drive module of the pitch mirror assembly receives commands to drive the reflector assembly to rotate along the pitch axis, thereby enabling the infrared search system to adjust the pitch direction of the incident light from the external target. The image shift compensation component is an electromechanical component that can drive the internal reflector to reciprocate at high speed along the azimuth axis according to external commands during the exposure time of the infrared imager when the infrared search system rotates continuously. This compensates for the motion of the incident light from the external target that enters through the pitch mirror component, so as to ensure that the external scene remains unchanged during the exposure time of the infrared imager. The azimuth adapter is fixedly connected to the optical window assembly to form a sealed chamber. The lower surface of the azimuth adapter is installed together with the moving part of the azimuth drive module, and the moving part of the azimuth drive module rotates continuously 360° along the azimuth axis. The base is used to provide mechanical support for the entire infrared search system and to provide mechanical installation interfaces to the outside. The azimuth drive module is an electromechanical component, including a drive motor and a sensor. The mover part of the split motor and sensor, after being assembled into a shaft system, is fixedly connected to the azimuth adapter seat, driving the azimuth adapter seat to rotate. The stator part is mounted on the base. The azimuth drive module can rotate along the azimuth axis according to external commands. The reflector assembly is used to refract incident light from an external target by 90° before it enters the infrared imager; The infrared imager is a photoelectric conversion device used to convert the incident light from the external target that enters through the reflector assembly into an electrical signal from an infrared radiation signal, and output an image in a specific format to achieve target detection.

2. The mirror tower type infrared search system as described in claim 1, characterized in that, The optical window assembly is mounted on the upper surface of the azimuth adapter by screws.

3. The mirror tower type infrared search system as described in claim 1, characterized in that, The stator of the orientation drive module is mounted on the top inner wall of the base with screws, and the orientation adapter is mounted on the mover of the orientation drive module with screws.

4. The mirror tower type infrared search system as described in claim 1, characterized in that, The orientation adapter is made of metal.

5. The mirror tower type infrared search system as described in claim 1, characterized in that, The base is a metal structural component.

6. The mirror tower type infrared search system as described in claim 1, characterized in that, The reflector assembly includes a metal structural component and an optical reflector, with the optical reflector mounted on the metal structural component.

7. The mirror tower type infrared search system as described in claim 1, characterized in that, The infrared imager is a photoelectric conversion device, mainly composed of structural components and photoelectric components, with the photoelectric components mounted on the structural components.

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