CN114910175B - A fully liquid-cooled mid-wave infrared optical imaging device - Google Patents

Abstract

A full liquid-cooling medium wave infrared optical imaging device relates to the field of infrared thermal imaging and comprises a liquid-cooling shell mechanism, a medium wave infrared camera, a non-uniform correction baffle mechanism, a transmission type optical element liquid-cooling mechanism and a liquid-cooling pipe assembly; the medium wave infrared camera, the non-uniform correction baffle mechanism, the transmission type optical element liquid cooling mechanism and the liquid cooling pipe are all arranged in the liquid cooling shell mechanism; the non-uniform correction baffle mechanism is positioned between the medium wave infrared camera and the liquid cooling mechanism of the transmission type optical element; the liquid cooling housing mechanism and the transmissive optical element liquid cooling mechanism are connected through a liquid cooling tube assembly. The invention realizes the full liquid cooling design, inhibits the influence of the ambient temperature on the imaging quality of the medium-wave infrared optical imaging device, and improves the working performance and the environmental adaptability of the medium-wave infrared optical imaging device under the complex meteorological condition. The unevenness of brightness and darkness of the image is reduced by more than 4 times, and the imaging quality of the medium-wave infrared optical imaging device continuously working for 24 hours under the complex meteorological condition is improved.

Description

A fully liquid-cooled mid-wave infrared optical imaging device

technical field

The invention relates to the technical field of infrared thermal imaging, in particular to a fully liquid-cooled mid-wave infrared optical imaging device.

Background technique

Infrared thermal imaging technology has been widely used in various fields such as military affairs, astronomy, and meteorology. With the development of cooling infrared detection technology, higher requirements are put forward for clear imaging under complex meteorological conditions such as cloudy, high temperature, and heavy rainfall. Require. However, due to the power consumption of the infrared camera itself, the heat dissipation of structural parts or the curvature, thickness and spacing of its optical system will also change with the temperature of the space where it is located, seriously affecting the imaging quality of the optical system. In particular, there are urgent military needs such as unmanned intelligence and continuous work better than 24 hours in complex weather environments. Infrared cameras need to be designed for automatic non-uniformity correction.

At present, the existing conventional infrared camera non-uniformity correction methods mainly include: 1. Using the correction plate mechanism; 2. For the sky background, calling the camera mapping table. However, in some harsh weather environments, factors such as uneven temperature distribution of the correction block, uneven sky background brightness, and limited ability to suppress background noise by calling the camera mapping table will affect the non-uniformity correction results and reduce the performance of the mid-wave infrared optical lens. The imaging quality cannot achieve clear imaging of long-distance targets and uniform correction before infrared calibration, and cannot meet the uniform correction under complex meteorological conditions such as cloudy, high temperature and heavy rainfall.

The calibration device proposed in the Chinese patent "An Infrared Calibration Device and Testing Equipment" with the publication number CN114323307A realizes the checkerboard arrangement of the accommodating cavities through semiconductor temperature control, which can make the temperature of the infrared calibration device uniform. However, this device still cannot achieve uniform correction before infrared calibration, especially in the case of large background temperature differences, there will still be uneven temperature on the checkerboard, and it cannot realize unattended and convenient optical correction under complex meteorological conditions. The Chinese patent "A Water Cooling Device for Optical Components in a Vacuum Environment" with publication number CN105552695A proposes a reflective water cooling device, which solves the heat dissipation problem of optical components in a vacuum environment. However, this device is a water-cooled structure for reflective optical components, and cannot realize the cooling of the whole machine and transmissive optical components under complex weather conditions.

Contents of the invention

The purpose of the present invention is to provide a fully liquid-cooled mid-wave infrared optical imaging device to solve the problems of the existing conventional infrared camera non-uniformity correction methods, such as the degradation of imaging quality caused by the influence of ambient temperature and the correction of non-uniformity and non-uniformity correction. difficult question.

The technical scheme that the present invention adopts for solving technical problems is as follows:

A fully liquid-cooled mid-wave infrared optical imaging device of the present invention includes: a liquid-cooled housing mechanism, a mid-wave infrared camera, a non-uniform correction shutter mechanism, a liquid-cooled mechanism for a transmission optical element, and a liquid-cooled tube assembly; The mid-wave infrared camera, the non-uniform correction shutter mechanism, the transmission optical element liquid cooling mechanism and the liquid cooling tube assembly are all installed inside the liquid-cooled shell mechanism; the non-uniform correction shutter mechanism is located between the mid-wave infrared camera and the transmission type Between the optical element liquid cooling mechanism; the liquid cooling housing mechanism and the transmissive optical element liquid cooling mechanism are connected through a liquid cooling tube assembly.

Further, the liquid-cooled shell mechanism includes: a shell bottom plate, two shell panels installed at the left and right ends of the shell bottom plate, and three liquid-cooled plate mechanisms connected to the two shell panels; The camera, the non-uniform correction shutter mechanism and the transmissive optical element liquid cooling mechanism are all installed on the bottom plate of the housing.

Further, among the three liquid-cooled plate mechanisms, the first liquid-cooled plate mechanism is installed on the upper ends of the two shell panels, the second liquid-cooled plate mechanism is installed on the front ends of the two shell panels, and the third liquid-cooled plate mechanism Installed on the rear end of the two housing panels.

Further, each liquid-cooled plate mechanism includes: a liquid-cooled bottom plate, a connecting frame arranged on the liquid-cooled bottom plate, a first liquid-cooled tank arranged on the liquid-cooled bottom plate and inside the connecting frame, a liquid cooling tank installed on the connecting frame The cold gland, the first liquid inlet elbow and the first liquid outlet elbow arranged on the liquid cooling bottom plate, the heat sink arranged on the liquid cooling gland; the first liquid inlet elbow and the first liquid outlet elbow The heads are respectively connected to both ends of the first liquid cooling tank.

Further, among the three liquid-cooled plate mechanisms, the first liquid outlet elbow of the first liquid-cooled tank in the first liquid-cooled plate mechanism and the first liquid inlet of the first liquid-cooled tank in the second liquid-cooled plate mechanism The elbow is connected by a liquid cooling pipe, and the first outlet elbow of the first liquid cooling tank in the second liquid cooling plate mechanism passes through the first liquid inlet elbow of the first liquid cooling tank in the third liquid cooling plate mechanism The liquid cooling tube is connected.

Further, the liquid-cooled tube assembly includes: an inner cavity liquid inlet elbow, an inner cavity liquid outlet elbow, a first liquid cooling tube, a second liquid cooling tube and a third liquid cooling tube; the inner cavity liquid inlet elbow Both the head and the inner cavity liquid outlet elbow are installed on the inner wall of the third liquid cooling plate mechanism, and the inner cavity liquid inlet elbow and the inner cavity liquid outlet elbow pass through the first liquid cooling tube, the second liquid cooling tube and the first liquid cooling tube. The three liquid cooling tubes are connected with the transmission optical element liquid cooling mechanism.

Further, the transmissive optical element liquid cooling mechanism includes: a mirror frame installed on the bottom plate of the housing, a first transmissive liquid cooling mirror seat and a second transmissive liquid cooling mirror seat respectively installed at the left and right ends of the mirror frame, symmetrically installed The first transmission liquid inlet elbow and the first transmission liquid outlet elbow on the upper surface of the left end of the mirror frame, the second transmission liquid outlet elbow and the second transmission liquid inlet elbow symmetrically installed on the upper surface of the right end of the mirror frame; The outer surface of the first transmission liquid cooling mirror seat is provided with a second liquid cooling tank; the first transmission liquid cooling mirror seat is used to install the transmission optical element mirror group one in the mid-wave infrared camera lens; the second transmission liquid A third liquid cooling groove is provided on the outer surface of the cold mirror seat; the second transmission liquid cold mirror seat is used for installing the second transmission optical element lens group in the mid-wave infrared camera lens.

Further, the first liquid outlet elbow of the first liquid cooling tank in the third liquid cooling plate mechanism is connected to the inner cavity liquid inlet elbow through a liquid cooling tube, and the inner cavity liquid inlet elbow is connected to the first transmission liquid inlet elbow. The elbow is connected through the first liquid cooling tube, the first transmission liquid outlet elbow is connected with the second transmission liquid inlet elbow through the second liquid cooling tube, the second transmission liquid outlet elbow is connected with the inner cavity liquid outlet elbow through the third The liquid cooling tubes are connected, and the first liquid inlet elbow of the first liquid cooling tank in the first liquid cooling plate mechanism is connected with the inner cavity liquid outlet elbow through the liquid cooling tubes.

Further, the non-uniform correction shutter mechanism includes: a base installed on the bottom plate of the housing, a first installation frame and a second installation frame vertically installed on the base, and a drive motor installed on the left side of the upper end of the first installation frame 1. The potentiometer installed on the right side of the upper end of the second mounting frame, the rotating shaft installed on the left side of the upper end of the first mounting frame and the second mounting frame through bearings at both ends, and the handle wheel set in the middle of the rotating shaft. The wheel is located between the first mounting frame and the second mounting frame, and the output shaft of the driving motor and the measuring end of the potentiometer are respectively connected to the two ends of the rotating shaft; a plurality of evenly distributed mounting holes are arranged on the circumferential direction of the handlebar, One of the mounting holes is used as a light hole, and shading sheets are installed in the other mounting holes; when calibrating, start the driving motor to drive the wheel to rotate so that different shading sheets are aligned with the MWIR camera. After the calibration is completed, start the driving motor to drive the wheel Rotate to align the blank mounting hole with the MWIR camera.

Further, a sealing strip is installed at the connection between the liquid cooling gland and the connection frame for static sealing; a sealing ring is installed at the connection between the first transmission liquid cooling mirror base and the mirror frame for static sealing; the second transmission liquid cooling mirror A sealing ring is installed at the connection between the seat and the mirror frame for static sealing.

The beneficial effects of the present invention are:

1. Through the design of the liquid cooling mechanism of the transmissive optical element, the temperature of the internal transmissive optical element can be effectively reduced, so that the optical lens is in a low temperature and constant temperature state, keeping the temperature of the optical lens constant, and effectively suppressing the change of the ambient temperature to image the lens of the mid-wave infrared camera Influenced by the quality, the working performance and environmental adaptability of the mid-wave infrared camera lens under complex meteorological conditions are improved, and the imaging quality is improved.

2. Through the design of the liquid-cooled shell mechanism, the overall liquid-cooled temperature control function for the liquid-cooled shell and the mid-wave infrared camera can be realized, which can effectively suppress the impact of ambient temperature changes on the performance of the internal mid-wave infrared camera and ensure non-uniformity The temperature of the correction baffle mechanism is uniform, thereby suppressing the deformation caused by uneven heating of the liquid-cooled housing and the mid-wave infrared camera lens, and the problem of uneven temperature of the non-uniform correction baffle mechanism.

3. Through the design of the liquid-cooled shell mechanism, the internal non-uniform correction flap mechanism can no longer be affected by the change of external ambient temperature, which improves the ability of the non-uniform correction flap mechanism to resist changes in ambient temperature, thereby improving the non-uniform correction The non-uniform correction effect of the baffle mechanism on the fully liquid-cooled mid-wave infrared optical imaging device realizes clear imaging of long-distance targets.

4. The present invention realizes the full-liquid cooling design of the full-liquid-cooled mid-wave infrared optical imaging device, which can keep the temperature in the device cavity constant, so that the device is no longer affected by changes in ambient temperature, and improves the full-liquid-cooled mid-wave infrared optical imaging. The working performance and environmental adaptability of the device to complex meteorological conditions such as cloudy, high temperature, and heavy rainfall; compared with the prior art, the unevenness of image brightness and darkness in the present invention is reduced by more than 4 times, and the full liquid cooling under complex meteorological conditions is improved. The imaging quality of the mid-wave infrared optical imaging device works continuously for 24 hours.

5. The present invention has a simple structure and is easy to realize.

Description of drawings

FIG. 1 is a schematic diagram of a three-dimensional structure of a fully liquid-cooled mid-wave infrared optical imaging device of the present invention.

FIG. 2 is a schematic diagram of the internal structure of a fully liquid-cooled mid-wave infrared optical imaging device of the present invention.

FIG. 3 is a schematic perspective view of a liquid-cooled shell mechanism.

FIG. 4 is a schematic structural diagram of a liquid-cooled plate mechanism.

Fig. 5 is a schematic diagram of the structure of the liquid-cooled bottom plate.

FIG. 6 is a schematic diagram of a three-dimensional structure of a liquid cooling mechanism for a transmissive optical element.

Fig. 7 is a cross-sectional view of a liquid cooling mechanism for a transmissive optical element.

Fig. 8 is a schematic structural view of the first transmission liquid cooling mirror mount.

Fig. 9 is a schematic structural view of the second transmission liquid cooled mirror mount.

FIG. 10 is a schematic perspective view of the three-dimensional structure of the non-uniform correction shutter mechanism.

Fig. 11 is a cross-sectional view of the non-uniform correction shutter mechanism.

FIG. 12 is an optical image correction effect diagram of an all-liquid-cooled mid-wave infrared optical imaging device of the present invention. In the figure, A-E represent different positions in the image.

In the figure, 1. Liquid-cooled shell mechanism, 1.1, liquid-cooled plate mechanism, 1.2, shell panel, 1.3, shell bottom plate, 1.1.1, first liquid inlet elbow, 1.1.2, first liquid outlet elbow Head, 1.1.3, liquid cooling gland, 1.1.4, liquid cooling bottom plate, 1.1.5, first liquid cooling tank, 1.1.6, connecting frame, 1.1.7, heat sink;

2. Mid-wave infrared camera;

3. Non-uniform correction shutter mechanism, 3.1, drive motor, 3.2, rotating shaft, 3.3, handle wheel, 3.4, light-shielding film, 3.5, potentiometer, 3.6, bracket, 3.7, first bearing, 3.8, second bearing;

4. Liquid cooling mechanism for transmissive optical components, 4.1, first transmission liquid cooling mirror holder, 4.2, first transmission liquid inlet elbow, 4.3, first transmission liquid outlet elbow, 4.4, mirror frame, 4.5, second transmission Outlet elbow, 4.6, the second transmission liquid inlet elbow, 4.7, the second transmission liquid cold mirror seat;

5. Liquid cooling tube assembly, 5.1, Inner cavity liquid inlet elbow, 5.2, Inner cavity liquid outlet elbow, 5.3, First liquid cooling tube, 5.4, Second liquid cooling tube, 5.5, Third liquid cooling tube.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, a fully liquid-cooled mid-wave infrared optical imaging device of the present invention mainly includes: a liquid-cooled housing mechanism 1, a mid-wave infrared camera 2, a non-uniform correction shutter mechanism 3, a transmissive Optical element liquid cooling mechanism 4 and liquid cooling tube assembly 5 . Wherein, the mid-wave infrared camera 2 adopts the prior art. The mid-wave infrared camera 2, the non-uniform correction shutter mechanism 3, the transmissive optical element liquid cooling mechanism 4 and the liquid cooling tube assembly 5 are all installed inside the liquid-cooled housing mechanism 1, and the mid-wave infrared camera 2 is located in the liquid-cooled housing mechanism 1, on the left side of the interior, the transmissive optical element liquid cooling mechanism 4 is located on the right side of the liquid cooling housing mechanism 1, and the non-uniform correction shutter mechanism 3 is located between the mid-wave infrared camera 2 and the transmissive optical element liquid cooling mechanism 4; The cold housing mechanism 1 and the transmissive optical element liquid cooling mechanism 4 are connected through a liquid cooling tube assembly 5, so that the transmissive optical element liquid cooling mechanism 4 communicates with the liquid cooling housing mechanism 1 to realize a full liquid cooling design.

As shown in FIG. 3 , the liquid-cooled shell mechanism 1 mainly includes: a liquid-cooled plate mechanism 1.1, a shell panel 1.2, a shell bottom plate 1.3 and an installation hole 1.4. The number of shell panels 1.2 is two, and one of the shell panels 1.2 is provided with a mounting hole 1.4; the two shell panels 1.2 are respectively installed on the left and right ends of the shell bottom plate 1.3; the number of liquid-cooled plate mechanisms 1.1 is three , the three liquid-cooled plate mechanisms 1.1 have the same structural composition; the first liquid-cooled plate mechanism 1.1 is installed on the upper ends of the two shell panels 1.2; the second liquid-cooled plate mechanism 1.1 is installed on the two shell panels 1.2 At the front end, the lower end of the second liquid-cooled plate mechanism 1.1 is installed on the front end of the shell bottom plate 1.3; the third liquid-cooled plate mechanism 1.1 is installed on the rear end of the two shell panels 1.2, and the lower end of the third liquid-cooled plate mechanism 1.1 is installed on the shell Body bottom plate 1.3 rear end; mid-wave infrared camera 2, non-uniform correction shutter mechanism 3, transmissive optical element liquid cooling mechanism 4 are all installed on the casing bottom plate 1.3.

As shown in Figure 4 and Figure 5, each liquid-cooled plate mechanism 1.1 includes: the first liquid inlet elbow 1.1.1, the first liquid outlet elbow 1.1.2, the liquid-cooled gland 1.1.3, and the liquid-cooled bottom plate 1.1.4, the first liquid cooling tank 1.1.5, the connecting frame 1.1.6 and the heat sink 1.1.7; the connecting frame 1.1.6 is set on the outer surface of the liquid cooling bottom plate 1.1.4, and the first liquid cooling tank 1.1.5 is set On the outer surface of the liquid cooling bottom plate 1.1.4, and the first liquid cooling tank 1.1.5 is located inside the connecting frame 1.1.6; the liquid cooling gland 1.1.3 is installed on the connecting frame 1.1.6, and the first liquid cooling tank 1.1 .5 encapsulated inside the liquid-cooled gland 1.1.3, and at the same time, a sealing strip is installed at the connection between the liquid-cooled gland 1.1.3 and the connecting frame 1.1.6 for static sealing to prevent liquid leakage; the liquid-cooled gland 1.1.3 A heat sink 1.1.7 is arranged on the top to increase the heat dissipation area; the first liquid inlet elbow 1.1.1 and the first liquid outlet elbow 1.1.2 are both arranged on the edge of the upper surface of the liquid cooling bottom plate 1.1.4; the first liquid inlet The elbow 1.1.1 and the first liquid outlet elbow 1.1.2 are respectively connected to both ends of the first liquid cooling tank 1.1.5. By circulating a sufficient amount of cooling liquid in the liquid-cooled plate mechanism 1.1, the design of constant temperature in the cavity of the fully liquid-cooled mid-wave infrared optical imaging device can be realized.

The first liquid cooling tanks 1.1.5 in the three liquid cooling plate mechanisms 1.1 are connected in series to make the cooling liquid circulate and realize the circulating liquid cooling function of the liquid cooling shell mechanism 1 . Among them, the first liquid cooling tank 1.1.5 in the first liquid cooling plate mechanism 1.1, the first liquid cooling tank 1.1.5 in the second liquid cooling plate mechanism 1.1 and the third liquid cooling plate mechanism 1.1 The first liquid cooling tanks 1.1.5 are connected in series through respective first liquid inlet elbows 1.1.1 and first liquid outlet elbows 1.1.2 and liquid cooling pipes. Specifically, the first liquid outlet elbow 1.1.2 of the first first liquid cooling tank 1.1.5 and the first liquid inlet elbow 1.1.1 of the second first liquid cooling tank 1.1.5 pass through the liquid cooling tube connected, the first liquid outlet elbow 1.1.2 of the second first liquid cooling tank 1.1.5 is connected to the first liquid inlet elbow 1.1.1 of the third first liquid cooling tank 1.1.5 through a liquid cooling tube .

As shown in Figure 2, the liquid cooling tube assembly 5 mainly includes: inner cavity liquid inlet elbow 5.1, inner cavity liquid outlet elbow 5.2, first liquid cooling tube 5.3, second liquid cooling tube 5.4 and third liquid cooling tube 5.5 . Among them, the inner cavity liquid inlet elbow 5.1 and the inner cavity liquid outlet elbow 5.2 are installed on the inner wall of the third liquid cold plate mechanism 1.1 among the three liquid cold plate mechanisms 1.1, and the inner cavity liquid inlet elbow 5.1 and the inner cavity outlet elbow The liquid elbow 5.2 is connected to the transmission optical element liquid cooling mechanism 4 through the first liquid cooling pipe 5.3, the second liquid cooling pipe 5.4 and the third liquid cooling pipe 5.5.

As shown in Fig. 6 to Fig. 9, the transmissive optical element liquid cooling mechanism 4 mainly includes: the first transmissive liquid cooling mirror base 4.1, the first transmissive liquid inlet elbow 4.2, the first transmissive liquid outlet elbow 4.3, and the mirror frame 4.4 , the second transmission liquid outlet elbow 4.5, the second transmission liquid inlet elbow 4.6 and the second transmission liquid cooling mirror seat 4.7; the mirror frame 4.4 is installed on the shell bottom plate 1.3; the first transmission liquid cooling mirror seat 4.1 and the second transmission liquid cooling mirror seat The transmission liquid cooling mirror base 4.7 is respectively installed on the left and right ends of the mirror frame 4.4, the first transmission liquid inlet elbow 4.2 and the first transmission liquid outlet elbow 4.3 are symmetrically installed on the upper surface of the left end of the mirror frame 4.4, and the second transmission liquid outlet elbow 4.5 and the second transmission liquid inlet elbow 4.6 are symmetrically installed on the upper surface of the right end of the mirror frame 4.4. The interior of the first transmission liquid-cooled mirror seat 4.1 is hollow, and the interior of the first transmission liquid-cooled mirror seat 4.1 is provided with a transmission optical element installation hole-4.1.2, and the transmission optical element mirror group-2.1 in the lens of the mid-wave infrared camera 2 is installed In the transmission optical element installation hole 1 4.1.2 inside the first cooling mirror base 4.1; the outer surface of the right end of the first transmission liquid cooling mirror base 4.1 is provided with a second liquid cooling tank 4.1.1, and the first transmission liquid inlet elbow 4.2 and the first transmission liquid outlet elbow 4.3 are respectively connected to both ends of the second liquid cooling tank 4.1.1; the second transmission liquid cooling mirror seat 4.7 is hollow inside, and the second transmission liquid cooling mirror seat 4.7 is provided with a transmission optical element inside Mounting hole two 4.7.2, the transmission optical element mirror group two 2.2 in the mid-wave infrared camera 2 lens is installed in the transmission optical element installation hole two 4.7.2 inside the second transmission liquid cooling mirror seat 4.7, and the transmission type The outermost optical lens in the optical element lens group 2.2 is located in the installation hole 1.4; the outer surface of the second transmission liquid cooling mirror seat 4.7 is provided with a third liquid cooling tank 4.7.1, the second transmission liquid outlet elbow 4.5 and the second transmission The liquid inlet elbow 4.6 is respectively connected to both ends of the third liquid cooling tank 4.7.1; the inside of the mirror frame 4.4 is hollow, and the left end of the mirror frame 4.4 is provided with a mounting hole for the first transmission liquid cooling mirror seat, and the first transmission liquid cooling mirror seat 4.1 The right end is inserted into the mounting hole of the first transmission liquid cooling mirror holder of the mirror frame 4.4 and tightened with screws, and an O-ring is installed at the connection between the first transmission liquid cooling mirror holder 4.1 and the mirror frame 4.4, which can realize static sealing and prevent liquid Leakage; the inside of the right end of the mirror frame 4.4 is provided with a second transmission liquid cooling mirror seat mounting hole, the second transmission liquid cooling mirror seat 4.7 is inserted into the second transmission liquid cooling mirror seat mounting hole of the mirror frame 4.4 and pressed tightly with screws, the second transmission liquid cooling mirror seat An O-ring is installed at the joint between the liquid-cooled mirror base 4.7 and the mirror frame 4.4, which can realize static sealing and prevent liquid leakage.

The first liquid outlet elbow 1.1.2 of the third first liquid cooling tank 1.1.5 is connected to the inner cavity liquid inlet elbow 5.1 through a liquid cooling tube, and the inner cavity liquid inlet elbow 5.1 is connected to the first transmission liquid inlet elbow 4.2 is connected through the first liquid cooling pipe 5.3, the first transmission liquid outlet elbow 4.3 is connected with the second transmission liquid inlet elbow 4.6 through the second liquid cooling pipe 5.4, the second transmission liquid outlet elbow 4.5 is connected with the inner cavity liquid outlet elbow The head 5.2 is connected through the third liquid cooling pipe 5.5, and the first liquid inlet elbow 1.1.1 of the first first liquid cooling tank 1.1.5 is connected with the cavity outlet elbow 5.2 through the liquid cooling pipe.

Coolant circulation process:

The coolant is injected through the first liquid inlet elbow 1.1.1 of the first first liquid cooling tank 1.1.5 at one time, and then passes through the first first liquid cooling tank 1.1.5, the first first liquid cooling The first liquid outlet elbow 1.1.2 of tank 1.1.5, the first liquid inlet elbow 1.1.1 of the second first liquid cooling tank 1.1.5, the second first liquid cooling tank 1.1.5, the second The first outlet elbow 1.1.2 of the second first liquid cooling tank 1.1.5, the first liquid inlet elbow 1.1.1 of the third first liquid cooling tank 1.1.5, the third first liquid cooling Tank 1.1.5, the first liquid outlet elbow 1.1.2 of the third first liquid cooling tank 1.1.5 circulates and enters the inner cavity liquid inlet elbow 5.1, and then passes through the first liquid cooling tube 5.3, the first transmission tube Liquid inlet elbow 4.2, second liquid cooling tank 4.1.1, first transmission liquid outlet elbow 4.3, second liquid cooling pipe 5.4, second transmission liquid inlet elbow 4.6, third liquid cooling tank 4.7.1, The second transmission liquid outlet elbow 4.5, the third liquid cooling pipe 5.5, and the inner chamber liquid outlet elbow 5.2 circulate and enter the first liquid inlet elbow 1.1.1 of the first first liquid cooling tank 1.1.5, thus completing a cyclic process. The overall temperature control function of the transmissive optical element liquid cooling mechanism 4 is realized through the circulating flow of the cooling liquid, and the flow rate of the cooling liquid can be designed according to the temperature control requirements and the optical structure.

As shown in Figure 10 and Figure 11, the non-uniform correction shutter mechanism 3 adopts a circular switching design, mainly including: a driving motor 3.1, a rotating shaft 3.2, a handle wheel 3.3, a shading sheet 3.4, a potentiometer 3.5, a bracket 3.6, a first Bearing 3.7 and second bearing 3.8; Bracket 3.6 is installed on the housing bottom plate 1.3; Bracket 3.6 mainly includes: base 3.6.1, first mounting frame 3.6.2 and second mounting frame 3.6.3, base 3.6.1 is installed on On the shell bottom plate 1.3, the first mounting frame 3.6.2 and the second mounting frame 3.6.3 are installed vertically on the base 3.6.1; the driving motor 3.1 is installed on the left side of the upper end of the first mounting frame 3.6.2; the potentiometer 3.5 Installed on the right side of the upper end of the second mounting frame 3.6.3; the rotating shaft 3.2 is installed on the support 3.6 through the bearing, that is, one end of the rotating shaft 3.2 is installed on the left side of the upper end of the first mounting frame 3.6.2 through the first bearing 3.7, and the first bearing 3.7 The outer ring is fixed in the inner hole of the first installation frame 3.6.2, and the first bearing 3.7 The inner ring is fixed on the rotating shaft 3.2; the other end of the rotating shaft 3.2 is installed on the upper left end of the second mounting frame 3.6.3 through the second bearing 3.8 side, the outer ring of the second bearing 3.8 is fixed in the inner hole of the second mounting bracket 3.6.3, and the inner ring of the second bearing 3.8 is fixed on the rotating shaft 3.2; the output shaft of the driving motor 3.1 is connected with one end of the rotating shaft 3.2, and the potentiometer 3.5 measures The end is connected with the other end of the rotating shaft 3.2; the center hole of the wheel 3.3 is set in the middle position of the rotating shaft 3.2, the wheel 3.3 is located between the first mounting frame 3.6.2 and the second mounting frame 3.6.3, and the quarter of the wheel 3.3 The third exposes the first mounting frame 3.6.2 and the second mounting frame 3.6.3, and the remaining quarter of the handle wheel 3.3 is covered by the first mounting frame 3.6.2 and the second mounting frame 3.6.3. A plurality of evenly distributed mounting holes are provided along the circumferential direction of the handle wheel 3.3. In this embodiment, 6 mounting holes are provided, of which 5 mounting holes can be equipped with a light shielding sheet 3.4, and the other 1 mounting hole No component is installed as a light hole; during calibration, the handle wheel 3.3 can be rotated according to the actual working conditions, and the light-shielding sheet 3.4 is aligned with the main optical path of the mid-wave infrared camera 2 to achieve shielding, that is, the two sides of the light-shielding sheet 3.4 are respectively aligned with the mid-wave infrared camera The detection window of the photodetector 2 and the lens of the medium-wave infrared camera 2 perform non-uniformity correction; after the calibration is completed, the driving motor 3.1 drives the rotating shaft 3.2 to rotate the handle wheel 3.3, and aligns the mounting hole without any component, that is, the light hole The main optical path of the medium-wave infrared camera 2 realizes light; start the drive motor 3.1 to drive the rotating shaft 3.2 to rotate, and simultaneously drive the handle wheel 3.3 and the potentiometer 3.5 to rotate together. The potentiometer 3.5 is used to measure the rotation angle of the handle wheel 3.3. Realize the precise rotation of handle wheel 3.3.

In order to verify the effectiveness of a fully liquid-cooled mid-wave infrared optical imaging device of the present invention, the correction effect of the present invention was verified through the following experiments. The obtained correction data are shown in Table 1, and the correction results are shown in Figure 12. Using this After correction of a fully liquid-cooled mid-wave infrared optical imaging device invented by the invention, the unevenness of image brightness and darkness is 14.4%. Compared with the prior art, it can be seen that the unevenness of image brightness and darkness in the present invention is reduced by more than 4 times, which improves the The imaging quality of the full liquid-cooled mid-wave infrared optical imaging device working continuously for 24 hours under complex weather conditions has greatly improved the environmental adaptability of the full liquid-cooled mid-wave infrared optical imaging device to complex weather conditions such as cloudy, high temperature and heavy rainfall, and improved The imaging quality and working performance of the fully liquid-cooled mid-wave infrared optical imaging device were tested.

Table 1

In describing the present invention, it is to be understood that the terms "central", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying It means that the device or element referred to must have a specific orientation, be constructed and operated for a specific orientation, and thus cannot be construed as limiting the protection content of the present invention.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (3)

1. A fully liquid-cooled mid-wave infrared optical imaging device, characterized in that it includes: a liquid-cooled housing mechanism, a mid-wave infrared camera, a non-uniform correction shutter mechanism, a transmissive optical element liquid cooling mechanism, and a liquid-cooled tube assembly ; The mid-wave infrared camera, the non-uniform correction shutter mechanism, the transmissive optical element liquid cooling mechanism and the liquid-cooled tube assembly are all installed inside the liquid-cooled housing mechanism; the non-uniform correction shutter mechanism is located in the mid-wave infrared camera and between the transmissive optical element liquid cooling mechanism; the liquid cooling housing mechanism and the transmissive optical element liquid cooling mechanism are connected through a liquid cooling tube assembly; The liquid-cooled shell mechanism includes: a shell bottom plate, two shell panels installed at the left and right ends of the shell bottom plate, and three liquid-cooled plate mechanisms connected to the two shell panels; The uniform correction shutter mechanism and the transmissive optical element liquid cooling mechanism are installed on the bottom plate of the housing; Among the three liquid-cooled plate mechanisms, the first liquid-cooled plate mechanism is installed on the upper ends of the two shell panels, the second liquid-cooled plate mechanism is installed on the front ends of the two shell panels, and the third liquid-cooled plate mechanism is installed on the two shell panels. a housing panel rear end; Each liquid-cooled plate mechanism includes: a liquid-cooled bottom plate, a connecting frame arranged on the liquid-cooled bottom plate, a first liquid-cooled tank arranged on the liquid-cooled bottom plate and inside the connecting frame, and a liquid-cooled gland installed on the connecting frame , the first liquid inlet elbow and the first liquid outlet elbow arranged on the liquid cooling bottom plate, and the heat sink arranged on the liquid cooling gland; the first liquid inlet elbow and the first liquid outlet elbow are respectively connected with Both ends of the first liquid cooling tank are connected; Among the three liquid-cooled plate mechanisms, the first outlet elbow of the first liquid-cooled tank in the first liquid-cooled plate mechanism passes through the first liquid-inlet elbow of the first liquid-cooled tank in the second liquid-cooled plate mechanism The liquid cooling tube is connected, and the first liquid outlet elbow of the first liquid cooling tank in the second liquid cooling plate mechanism and the first liquid inlet elbow of the first liquid cooling tank in the third liquid cooling plate mechanism pass through the liquid cooling tube connected; The liquid cooling tube assembly includes: an inner cavity liquid inlet elbow, an inner cavity liquid outlet elbow, a first liquid cooling tube, a second liquid cooling tube and a third liquid cooling tube; the inner cavity liquid inlet elbow and the inner cavity The cavity outlet elbows are installed on the inner wall of the third liquid cooling plate mechanism, and the inner cavity liquid inlet elbow and the inner cavity liquid outlet elbow pass through the first liquid cooling tube, the second liquid cooling tube and the third liquid cooling tube. The tube is connected to the transmissive optical element liquid cooling mechanism; The transmission optical element liquid cooling mechanism includes: a mirror frame installed on the bottom plate of the housing, a first transmission liquid cooling mirror mount and a second transmission liquid cooling mirror mount respectively mounted on the left and right ends of the mirror frame, symmetrically mounted on the mirror frame The first transmission liquid inlet elbow and the first transmission liquid outlet elbow on the upper surface of the left end, the second transmission liquid outlet elbow and the second transmission liquid inlet elbow symmetrically installed on the upper surface of the right end of the mirror frame; the first transmission The outer surface of the liquid-cooled mirror base is provided with a second liquid-cooled groove; the first transmission liquid-cooled mirror base is used to install the transmission optical element mirror group one in the mid-wave infrared camera lens; the second transmission liquid-cooled mirror base The outer surface is provided with a third liquid cooling tank; the second transmission liquid cooling mirror seat is used to install the second transmission optical element mirror group in the mid-wave infrared camera lens; The first liquid outlet elbow of the first liquid cooling tank in the third liquid cooling plate mechanism is connected to the inner cavity liquid inlet elbow through a liquid cooling tube, and the inner cavity liquid inlet elbow is connected to the first transmission liquid inlet elbow through The first liquid cooling pipe is connected, the first transmission liquid outlet elbow is connected with the second transmission liquid inlet elbow through the second liquid cooling pipe, the second transmission liquid outlet elbow is connected with the inner cavity liquid outlet elbow through the third liquid cooling pipe The first liquid inlet elbow of the first liquid cooling tank in the first liquid cooling plate mechanism is connected to the inner chamber outlet elbow through a liquid cooling tube. 2. A fully liquid-cooled mid-wave infrared optical imaging device according to claim 1, wherein the non-uniform correction shutter mechanism comprises: a base installed on the bottom plate of the housing, a base installed vertically on the base The first mounting frame and the second mounting frame, the drive motor installed on the left side of the upper end of the first mounting frame, the potentiometer installed on the right side of the upper end of the second mounting frame, and the two ends are respectively installed on the first mounting frame and the second mounting frame through bearings. The rotating shaft on the left side of the upper end of the mounting frame, the handle wheel set in the middle of the rotating shaft, the handle wheel is located between the first mounting frame and the second mounting frame, the output shaft of the driving motor and the measuring end of the potentiometer are respectively connected with the rotating shaft The two ends of the shaft are connected; there are a plurality of evenly distributed installation holes on the circumference of the handle wheel, one of which is used as a light hole, and light-shielding sheets are installed in the other installation holes; when correcting, start the drive motor to drive the handle wheel Rotate to align different shading sheets with the MWIR camera. After the calibration is completed, start the drive motor to drive the wheel to rotate so that the blank mounting holes are aligned with the MWIR camera. 3. A fully liquid-cooled mid-wave infrared optical imaging device according to claim 1, wherein a sealing strip is installed at the joint between the liquid-cooled gland and the connecting frame for static sealing; the first transmission liquid-cooled A sealing ring is installed at the joint between the mirror base and the mirror frame for static sealing; a sealing ring is installed at the joint between the second transmission liquid cooled mirror base and the mirror frame for static sealing.

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