Mirror tower type infrared search system

Abstract

The invention provides a mirror tower type infrared search system which comprises an optical window assembly, a pitching swing mirror assembly, an image motion compensation assembly, an azimuth adapter, a base, an azimuth driving module, a reflector assembly and an infrared imager. A traditional light path layout is changed, the infrared imager is installed on the fixed part, the turning radius is small, the size and weight of an orientation rotating part of the infrared searching system can be reduced, miniaturization design is achieved, the space utilization rate is effectively increased, the fixed part can be installed in a vehicle, a ship or an airplane, the area of an exposed part can be reduced, and the space utilization rate is increased. The infrared imager is installed at the tail end of the optical system, the influence on a front-end light path is small after the infrared imager is dismantled, and the maintainability is good. The device can be applied to platforms of vehicles, airplanes and ships to realize infrared panoramic search, can also be integrated with laser interference equipment, can complete laser interference on targets by changing the pointing angle of a laser light path, has remarkable effects in the aspects of product serialization and generalization, and has popularization significance.

Description

Technical Field

[0001] The invention belongs to the technical field of photoelectric detection, and in particular relates to a mirror tower type infrared search system. Background Art

[0002] With the development of optoelectronic devices, the implementation methods of optoelectronic detection are becoming more and more diverse. Among them, the infrared search system is a typical optoelectronic detection system. It is an imaging detection device that works in a passive way. The optoelectronic turntable drives the infrared imager to rotate along the azimuth axis 0 to 360 degrees to obtain a panoramic image of the surroundings, extract and identify the target through the infrared radiation characteristics, and report the target's location information. The current infrared search system generally includes an optoelectronic turntable, an infrared imager, an image motion compensation mechanism, an information processing module, etc., which can be carried on vehicles, aircraft, and other platforms to realize reconnaissance, aiming and other functions.

[0003] The existing infrared search system has the following disadvantages: 1. The infrared imager is mounted inside the load cabin of the optoelectronic turntable and rotates 360° along the azimuth axis, resulting in a large size and weight for the entire system; 2. The cabin of the rotating part of the optoelectronic turntable is large, the turning radius is large, and the external space utilization rate of the vehicle platform is low; 3. The maintainability is poor, especially after the infrared imager is removed, the optical accuracy of the original optical path will be destroyed, making recovery difficult. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The present invention proposes 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 solution

[0007] In order to solve the above technical problems, the present invention proposes a mirror tower type infrared search system, which includes an optical window component, a pitch and tilt mirror component, an image shift compensation component, an azimuth adapter, a base, an azimuth drive module, a reflector component and an infrared imager; wherein,

[0008] The optical window assembly is mounted on the upper surface of the azimuth adapter; the pitch and tilt 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;

[0009] The optical window assembly is composed of an optical window and a structural member, on which an optical window transmitting a fixed wavelength is installed, and the structural member is fixedly connected to 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-and-swing mirror assembly adopts a reflector assembly. The driving module of the pitch-and-swing mirror assembly drives the reflector assembly to rotate along the pitch axis by receiving instructions, so as to realize the adjustment of the pitch direction of the incident light of the external target by the infrared search system;

[0011] The image motion compensation component adopts an electromechanical component, which can drive the internal reflector to reciprocate at high speed along the azimuth axis according to external instructions during the exposure time of the infrared imager when the infrared search system rotates continuously, and perform motion compensation for the incident light of the external target entering through the pitch and tilt mirror component, so as to ensure that the external scene of the infrared imager remains unchanged during the exposure time;

[0012] The azimuth adapter is fixedly connected with the optical window assembly to form a sealed cabin, and the lower surface of the azimuth adapter is installed together with the mover part of the azimuth drive module, and follows the mover part of the azimuth drive module to realize 360° continuous rotation along the azimuth axis;

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

[0014] The azimuth drive module is an electromechanical component, including a drive motor and a sensor. The split motor and the sensor are assembled into a shaft system, and the mover part is fixedly connected to the azimuth adapter to drive the azimuth adapter to rotate. The stator part is installed on the base. The azimuth drive module can rotate along the azimuth axis according to external instructions.

[0015] The reflector assembly is used to deflect the incident light from the external target by 90 degrees before entering the infrared imager;

[0016] The infrared imager is a photoelectric conversion device that converts the incident light from the external target entering through the reflector assembly from an infrared radiation signal into an electrical signal and outputs an image in a specific format to achieve target detection.

[0017] Furthermore, the optical window assembly is mounted on the upper surface of the orientation adapter by means of screws.

[0018] Furthermore, 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 mover part of the azimuth driving module by screws.

[0019] Furthermore, the azimuth adapter adopts a metal structural part.

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

[0021] Furthermore, the reflector assembly includes a metal structure and an optical reflector, and the optical reflector is mounted on the metal structure.

[0022] Furthermore, the infrared imager is a photoelectric conversion device, which mainly includes a structural member and a photoelectric component, and the photoelectric component is installed on the structural member.

[0023] (III) Beneficial effects

[0024] The present invention proposes a mirror tower type infrared search system, including an optical window component, a pitch and tilt mirror component, an image shift compensation component, an azimuth adapter, a base, an azimuth drive module, a reflector component and an infrared imager. The present invention changes the traditional optical path layout, installs the infrared imager on the fixed part, and has a small turning radius, which can reduce the volume and weight of the azimuth rotating part of the infrared search system, realize miniaturization design, and effectively improve space utilization. The fixed part can be installed inside a vehicle, ship or aircraft, which can reduce the area of ​​the exposed part. The infrared imager is installed at the end of the optical system, and has little impact on the front optical path after removal, and has good maintainability. The present invention can be applied to platforms of vehicles, aircraft, and ships to realize infrared panoramic search, and can also be integrated with laser jamming equipment to complete laser jamming of the target by changing the pointing angle of the laser optical path, which has significant effects in realizing product serialization and generalization, and has promotion significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the composition of the mirror tower type infrared search system of the present invention;

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

[0027] Figure 3 It is an overall schematic diagram of the mirror tower type infrared search system of the present invention (without the optical window component). DETAILED DESCRIPTION

[0028] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples.

[0029] This embodiment proposes a mirror tower type infrared search system, whose structure is as follows: Figures 1 to 3 As shown, the system includes an optical window assembly 1, a pitch and tilt mirror assembly 2, an image shift compensation assembly 3, an azimuth adapter 4, a base 5, an azimuth drive module 6, a reflector 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, and the pitch tilt mirror assembly 2 and the image shift compensation assembly 3 are 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 mover part of the azimuth drive module 6 by screws. The reflector assembly 7 and the infrared imager 8 are mounted inside the base 5 by screws.

[0031] The optical window assembly 1 is mainly composed of an optical window and a structural part, on which an optical window that transmits a fixed wavelength is installed. The structural part is fixedly connected to 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 reflector assembly. The driving module of the pitch swing mirror assembly 2 drives the reflector assembly to rotate a certain angle along the pitch axis by receiving instructions, so as to realize the adjustment of the pitch direction of the incident light of the external target by the infrared search system.

[0033] The image motion compensation component 3 adopts an electromechanical component, which can drive the internal reflector to reciprocate at high speed along the azimuth axis according to external instructions during the exposure time of the infrared imager when the infrared search system rotates continuously, and perform motion compensation for the incident light of the external target entering through the pitch and tilt mirror component 2, so as to ensure that the external scene of the infrared imager 8 remains unchanged during the exposure time.

[0034] The azimuth adapter 4 is made of a metal structure and is fixedly connected to the optical window assembly 1 to form a sealed cabin. The lower surface of the azimuth adapter 4 is installed together with the movable part of the azimuth driving module 6, and follows the movable part of the azimuth driving module 6 to achieve 360° continuous rotation along the azimuth axis.

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

[0036] The azimuth drive module 6 is an electromechanical component, including a drive motor and a sensor. The split motor and the sensor are assembled into a shaft system, and the mover part is fixedly connected to the azimuth adapter 4 to drive the azimuth adapter 4 to rotate. The stator part is installed on the base 5. The azimuth drive module 6 can rotate along the azimuth axis according to external instructions.

[0037] The reflector assembly 7 mainly includes a metal structure and an optical reflector. The optical reflector is installed on the metal structure and is used to fold the incident light of the external target by 90 degrees before entering the infrared imager 8.

[0038] The infrared imager 8 is a photoelectric conversion device, which mainly includes a structural member and a photoelectric component. The photoelectric component is installed on the structural member and is used to convert the incident light of the external target entering through the reflector component 7 from an infrared radiation signal into an electrical signal and output an image in a specific format to achieve target detection.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

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 and tilt 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 and tilt 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 is composed of an optical window and a structural member, on which an optical window transmitting a fixed wavelength is mounted, and the structural member is fixedly connected to 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; The pitch-and-swing mirror assembly adopts a reflector assembly, and the driving module of the pitch-and-swing mirror assembly drives the reflector assembly to rotate along the pitch axis by receiving instructions, so as to realize the adjustment of the pitch direction of the incident light of the external target by the infrared search system; The image motion compensation component adopts an electromechanical component, which can drive the internal reflector to reciprocate at high speed along the azimuth axis direction according to external instructions during the exposure time of the infrared imager when the infrared search system rotates continuously, and perform motion compensation for the external target incident light entering through the pitch and tilt mirror component, so as to ensure that the external scene of the infrared imager remains unchanged during the exposure time; The azimuth adapter is fixedly connected to the optical window assembly to form a sealed cabin, and the lower surface of the azimuth adapter is installed together with the mover part of the azimuth driving module, and follows the mover part of the azimuth driving module to achieve 360° continuous rotation along the azimuth axis; The base is used to provide mechanical support for the entire infrared search system and to provide a mechanical installation interface to the outside; The azimuth drive module is an electromechanical component, including a drive motor and a sensor. The split motor and the sensor are assembled into a shaft system, and the mover part is fixedly connected to the azimuth adapter to drive the azimuth adapter to rotate. The stator part is installed on the base; the azimuth drive module can rotate along the azimuth axis according to external instructions; The reflector assembly is used to deflect the incident light from the external target by 90 degrees before entering the infrared imager; The infrared imager is a photoelectric conversion device, which is used to convert the external target incident light entering through the reflector assembly from an infrared radiation signal into an electrical signal, and output an image in a specific format to achieve target detection.

2. The mirror tower type infrared search system according to claim 1, characterized in that: The optical window assembly is mounted on the upper surface of the orientation adapter by means of screws.

3. The mirror tower type infrared search system according to claim 1, characterized in that: The stator part of the azimuth driving module is mounted on the top inner wall of the base through screws, and the azimuth adapter is mounted on the mover part of the azimuth driving module through screws.

4. The mirror tower type infrared search system according to claim 1, characterized in that: The azimuth adapter is a metal structural member.

5. The mirror tower type infrared search system according to claim 1, characterized in that: The base is a metal structural part.

6. The mirror tower type infrared search system according to claim 1, characterized in that: The reflector assembly comprises a metal structure and an optical reflector, and the optical reflector is mounted on the metal structure.

7. The mirror tower type infrared search system according to claim 1, characterized in that: The infrared imager is a photoelectric conversion device, which mainly includes a structural member and a photoelectric component. The photoelectric component is installed on the structural member.

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