Non-refrigeration type dispersion infrared spectrum gas imager

Abstract

The invention provides a non-refrigeration type dispersion infrared spectrum gas imager, which relates to the technical field of infrared spectrum imaging, and comprises a non-refrigeration type infrared detector used for receiving and converting an infrared radiation signal from a target area; the lens group is arranged at the front end of the non-refrigeration type infrared detector; the heat dissipation device is tightly attached to the back of the non-refrigeration type infrared detector; the dispersion element is arranged between the lens group and the non-refrigeration type infrared detector; one end of the light guide pipe is connected with the lens group, and the other end is connected with the dispersion element; wherein a heat-conducting silicone grease layer is arranged on a contact surface between the heat dissipation device and the non-refrigeration type infrared detector, and the heat-conducting silicone grease layer comprises a microcapsule phase change material; the heat dissipation device comprises multiple layers of composite heat dissipation fins, heat conduction coatings are coated between every two layers of heat dissipation fins, and the problem that due to the fact that an uncooled infrared detector is poor in heat dissipation in a high-temperature environment, the temperature fluctuation of the detector is large can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of infrared spectrum imaging, in particular to a non-refrigerated dispersion infrared spectrum gas imager. Background Art

[0002] The uncooled dispersive infrared spectroscopic gas imager is an instrument that uses infrared spectroscopy technology to detect and image the concentration of specific gases. It is suitable for environmental monitoring, industrial safety and other fields.

[0003] However, this type of imager has a significant problem, that is, the uncooled infrared detector has poor heat dissipation performance in a high temperature environment, resulting in large temperature fluctuations in the detector. This not only affects the working stability and measurement accuracy of the imager, but may also reduce its service life.

[0004] Therefore, there is an urgent need for an uncooled dispersive infrared spectroscopic gas imager to solve the above technical problems. Summary of the invention

[0005] The purpose of the present invention is to provide an uncooled dispersive infrared spectroscopic gas imager to solve the technical problem that the uncooled infrared detector in the prior art has poor heat dissipation performance in a high temperature environment, resulting in large temperature fluctuations in the detector, affecting the working stability and measurement accuracy of the imager, and reducing its service life. The preferred technical solutions among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides an uncooled dispersive infrared spectroscopy gas imager, comprising:

[0008] Uncooled infrared detector, used to receive and convert infrared radiation signals from the target area;

[0009] A lens group, arranged at the front end of the uncooled infrared detector, for focusing and transmitting the infrared radiation signal to the uncooled infrared detector;

[0010] A heat dissipation device, which is closely mounted on the back of the uncooled infrared detector and is used to reduce the temperature fluctuation of the uncooled infrared detector;

[0011] A dispersion element, disposed between the lens group and the uncooled infrared detector, for performing spectroscopic processing on the infrared radiation signal to achieve differentiation and identification of different gas components;

[0012] A light guide, one end of which is connected to the lens group and the other end of which is connected to the dispersion element, and is used to transmit the infrared radiation signal along a predetermined path;

[0013] Wherein, a thermally conductive silicone grease layer is provided on the contact surface between the heat dissipation device and the non-refrigerated infrared detector, and the thermally conductive silicone grease layer includes a microcapsule phase change material;

[0014] The heat dissipation device comprises a plurality of layers of composite heat dissipation fins, and a heat conductive coating is coated between each layer of the heat dissipation fins.

[0015] Preferably, the lens group includes a plurality of optical lenses, the optical lenses are optical lenses with high light transmittance, and heat insulation materials are filled between each of the optical lenses.

[0016] Preferably, the thermal conductivity of the thermal conductive coating is higher than the thermal conductivity of the heat sink.

[0017] Preferably, the heat dissipation device adopts a multi-channel heat dissipation structure, and an independent micro fan is arranged in each channel.

[0018] Preferably, the dispersive element comprises a double-layer structure, wherein the inner layer is a high-performance diffraction grating and the outer layer is a thermally stable coating.

[0019] Preferably, a thermal buffer gasket is installed at the connection between the dispersion element and the light guide pipe.

[0020] Preferably, a multi-layer reflective coating is provided on the inner wall of the light guide tube.

[0021] Preferably, paraffin is encapsulated inside the microcapsule phase change material.

[0022] Preferably, the uncooled infrared detector is an uncooled vanadium oxide infrared focal plane detector with an operating band greater than 8-14 μm, and an insulating protective cover is disposed on the outside of the uncooled infrared detector.

[0023] Preferably, the insulating protective cover is fixed to the housing of the non-refrigerated infrared detector by means of buckles.

[0024] The present invention provides an uncooled dispersive infrared spectroscopic gas imager, comprising: an uncooled infrared detector for receiving and converting infrared radiation signals from a target area; a lens group, arranged at the front end of the uncooled infrared detector; a heat dissipation device, closely mounted on the back of the uncooled infrared detector; a dispersive element, arranged between the lens group and the uncooled infrared detector, for performing spectroscopic processing on the infrared radiation signal, thereby achieving the distinction and identification of different gas components; a light guide, one end of which is connected to the lens group, and the other end is connected to the dispersive element, to ensure that the infrared radiation signal is transmitted along a predetermined path. The solution of the embodiment of the present disclosure can solve the problem of large temperature fluctuations of the detector due to poor heat dissipation of the uncooled infrared detector in a high temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the explosion structure of an embodiment of the non-refrigerated dispersive infrared spectroscopy gas imager of the present invention;

[0027] Figure 2 It is a schematic diagram of the side cross-sectional structure of a lens group in the uncooled dispersive infrared spectroscopic gas imager of the present invention;

[0028] Figure 3 It is a schematic diagram of the side cross-sectional structure of the heat dissipation device in the non-refrigerated dispersive infrared spectroscopy gas imager of the present invention;

[0029] Figure 4 It is a schematic diagram of the side cross-sectional structure of the dispersion element in the uncooled dispersion infrared spectrum gas imager of the present invention.

[0030] In the figure: 1. Uncooled infrared detector; 2. Lens group; 3. Heat dissipation device; 4. Dispersion element; 5. Light guide; 6. Optical lens; 7. High-efficiency thermal insulation material; 8. Heat sink; 9. Thermal conductive coating; 10. High-performance diffraction grating; 11. Thermally stable coating; 12. Multi-layer reflective coating; 13. Microcapsule phase change material; 14. Micro fan; 15. Thermal buffer gasket; 16. Insulation protective cover. DETAILED DESCRIPTION

[0031] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0032] In the description of the present invention, it is to be understood that the terms “center”, “lateral”, “length”, “width”, “height”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “side”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0034] Figure 1 Schematic diagram of the structure of this embodiment. Figure 1 As shown, this embodiment provides an uncooled dispersive infrared spectroscopy gas imager, which includes multiple key components to achieve efficient and accurate gas imaging. These components mainly include an uncooled infrared detector 1, a lens group 2, a heat sink 3, a dispersive element 4 and a light guide 5.

[0035] Among them, the uncooled infrared detector 1 is the core component of the imager, and its main function is to receive and convert infrared radiation signals from the target area. In order to ensure the accuracy and reliability of imaging, the uncooled infrared detector 1 must have high sensitivity and stability. The uncooled infrared detector 1 is installed inside the instrument, and acquires and focuses the infrared radiation signal through the front lens group 2. A heat sink 3 is installed closely on the back of the detector to ensure that the temperature of the detector remains stable during long-term operation, thereby reducing noise and errors caused by temperature fluctuations. In a specific embodiment, the detector uses an uncooled vanadium oxide infrared focal plane detector, and the working band is greater than 8-14μm.

[0036] The lens group 2 is arranged at the front end of the uncooled infrared detector 1, and is mainly used to focus and conduct infrared radiation signals. The lens group 2 is usually composed of a plurality of optical elements with high transmittance and low absorption rate, which ensures that the incoming infrared radiation signals can be effectively concentrated and transmitted to the detector. The design of the lens group 2 needs to consider the field of view and focal length requirements of the imager to meet the needs of different application scenarios. In addition, the installation accuracy of the lens group 2 directly affects the imaging quality, so the alignment and parallelism of the lens need to be strictly controlled during the assembly process.

[0037] The heat sink 3 is installed closely on the back of the non-cooled infrared detector 1 and is made of highly efficient thermal conductive material. The main function of the heat sink 3 is to effectively reduce the temperature fluctuation of the detector during operation. In order to improve the efficiency of heat conduction, a layer of thermal grease is provided on the contact surface between the heat sink 3 and the non-cooled infrared detector 1. Thermal grease has excellent thermal conductivity and insulation properties, can effectively fill the tiny gaps on the contact surface, increase the actual contact area, and thus greatly improve the efficiency of heat conduction. In actual applications, the shape design of the heat sink 3 needs to be optimized according to the actual size and installation space of the detector to achieve the best heat dissipation effect.

[0038] The dispersion element 4 is arranged between the lens group 2 and the uncooled infrared detector 1, and is used to perform spectroscopic processing on the infrared radiation signal. The dispersion element 4 can be implemented in a variety of ways, the most common of which are diffraction gratings and prisms. The dispersion element 4 can separate infrared light of different wavelengths, so that different gas components produce different response signals on the detector, thereby achieving the distinction and identification of gas components. The design of the dispersion element 4 needs to consider factors such as the wavelength range, resolution and spectroscopic efficiency of the infrared light to meet the requirements of different application scenarios. In order to ensure the effective transmission of the optical signal, the position and angle of the dispersion element 4 need to be precisely adjusted.

[0039] One end of the light guide 5 is connected to the lens group 2, and the other end is connected to the dispersion element 4 to ensure that the infrared radiation signal is transmitted along a predetermined path. The light guide 5 is usually made of high temperature resistant and low loss materials to reduce the loss of the signal during transmission. The structural design of the light guide 5 needs to take into account the compactness and stability requirements of the imager to ensure that the connection between the components is firm and reliable. In addition, the inner surface of the light guide 5 is specially treated to improve the reflectivity and transmission efficiency of the optical signal. By reasonably designing the length and diameter of the light guide 5, the transmission path of the optical signal can be further optimized, thereby improving the imaging quality and detection accuracy.

[0040] refer to Figure 2 In one embodiment, a lens group 2 of an uncooled dispersive infrared spectroscopic gas imager of the present application is composed of a plurality of optical lenses 6 with high light transmittance, and the high-efficiency thermal insulation material 7 between these lenses can effectively isolate the heat in the external environment. The purpose of this design is to ensure that the uncooled infrared detector 1 can work stably in a high temperature environment and reduce the impact of temperature fluctuations on the imaging effect. Each lens is made of a high-transmittance material, such as silicon or germanium, to ensure high transmittance of infrared light. The high-efficiency thermal insulation material 7 is made of a material with low thermal conductivity, such as silica aerogel or polyimide film, to ensure that it has an excellent thermal insulation effect without affecting the optical performance.

[0041] Specifically, these lenses are installed in the front optical path of the imager in sequence, with appropriate spacing between each other and filled with heat-insulating materials. In this way, even if the external ambient temperature changes, the heat transferred to the non-cooled infrared detector 1 will be greatly reduced through the effective isolation of the heat-insulating material, thereby ensuring the working stability of the detector. This design not only improves the environmental adaptability of the instrument, but also ensures the stability of the image quality, especially under complex and changeable outdoor conditions. For example, when the instrument is used for industrial monitoring or atmospheric pollution detection, it can accurately and reliably obtain the distribution information of the target gas without being disturbed by changes in ambient temperature.

[0042] As an optional implementation, Figure 3 As shown, a heat dissipation device 3 of a non-cooled dispersive infrared spectroscopic gas imager of the present application includes a multi-layer composite heat sink 8, and a high-performance thermal conductive coating 9 is coated between each layer of the heat sink 8. This design effectively improves the thermal conductivity efficiency of the entire device. The multi-layer composite heat sink 8 can provide a larger surface area for heat dissipation, and the high-performance thermal conductive coating 9 ensures that heat can be quickly conducted between layers, thereby significantly reducing the temperature fluctuation of the non-cooled infrared detector 1 during operation. In this way, the present invention can maintain the operating temperature of the infrared detector within an ideal range without relying on refrigeration equipment, ensuring high-definition images and long-term stable operation of the system.

[0043] For example, in terms of technical implementation, a multi-layer composite heat sink 8 can be installed on the back of the infrared detector, with each layer of heat sink 8 tightly fitted together, and a high-performance thermal conductive coating 9 evenly coated on the contact surface. Specifically, the heat sink 8 can be made of high-efficiency heat dissipation materials such as copper or aluminum, which have good thermal conductivity and can quickly export the heat generated by the detector to the environment. This structure not only simplifies the assembly process, but also improves the durability and reliability of the system in high temperature environments. In addition, special attention should be paid to the selection and coating process of the high-performance thermal conductive coating 9 to ensure the uniformity and thickness of the coating, thereby maximizing the thermal conductivity effect. Furthermore, in order to achieve good heat dissipation, the thermal conductivity of the thermal conductive coating 9 is higher than that of the composite heat sink 8.

[0044] As an optional implementation, Figure 4As shown, the dispersion element 4 in an uncooled dispersive infrared spectroscopic gas imager in this embodiment adopts a unique double-layer structure design to cope with working conditions in high temperature environments. This design not only enhances the reliability and stability of the equipment, but also significantly reduces the impact of high temperature on the dispersion element 4, thereby ensuring the performance of the uncooled infrared detector 1 in complex environments. Specifically, the inner layer is a high-performance diffraction grating 10, which is an optical element capable of efficient spectroscopy, has the characteristics of high resolution and low insertion loss, and is suitable for a variety of complex spectral measurement tasks. The outer layer is a thermally stable coating 11, which can effectively isolate the thermal shock of the external environment to the inner layer high-performance diffraction grating 10 and prevent it from deformation, thereby ensuring the accuracy and consistency of the dispersion effect.

[0045] The high-performance diffraction grating 10 is fixed inside the dispersion element 4 through a precision process to ensure its accurate docking with the incident light. The thermally stable coating 11 is evenly wrapped on the outer layer, covering the entire surface of the diffraction grating to form a continuous protective film. Through this double-layer structure, the dispersion element 4 can still maintain its original optical properties even in a high-temperature environment, reducing the spectral shift caused by thermal deformation, thereby reducing the impact on the uncooled infrared detector 1. In addition, in order to further optimize the thermal stability, the coating material can be selected from composite materials with high thermal conductivity and low expansion coefficient, such as aluminum oxide or silicon nitride, which perform well under high temperature conditions and effectively improve the stability and durability of the entire system.

[0046] refer to Figure 1 As an optional implementation, the inner wall of the light guide 5 of an uncooled dispersive infrared spectroscopic gas imager in this embodiment is provided with a multi-layer reflective coating 12. The purpose of these reflective coatings is to reduce the heat energy loss of the infrared radiation signal during the transmission process, thereby ensuring the signal strength and stability. By reducing the heat energy loss, the reflective coating can effectively reduce the impact of temperature fluctuations on the uncooled infrared detector 1, and improve the performance and reliability of the entire imager. In addition, the design of the multi-layer reflective coating 12 not only optimizes the signal transmission efficiency, but also extends the service life of the system.

[0047] The specific design and application method of the multi-layer reflective coating 12 can select different materials and layers according to actual needs. For example, materials with high reflectivity such as gold, silver or aluminum can be used as the coating, and the thickness and number of layers between each coating can be optimized according to the required reflection effect and cost-effectiveness in practical applications. Specifically, the coating can be formed on the inner wall of the light guide 5 by methods such as physical vapor deposition (PVD) or chemical vapor deposition (CVD) to ensure that the coating is uniform and complete, minimize the heat energy loss of infrared radiation, and ensure the stability and strength of the signal.

[0048] As an optional implementation, a heat-conducting silicone grease layer is provided between the heat sink 3 and the uncooled infrared detector 1 in the uncooled dispersive infrared spectroscopic gas imager, and the heat-conducting silicone grease layer also contains microcapsule phase change materials 13. These microcapsule phase change materials 13 can change physical states under different temperature conditions, thereby effectively enhancing the heat conduction effect without increasing additional power consumption. This design helps to further improve the heat dissipation performance in a high temperature environment and ensure that the imager works stably under various environmental conditions.

[0049] Specifically, the thermal grease layer is evenly coated between the contact surface of the heat sink 3 and the non-refrigerated infrared detector 1. Since the thermal grease itself has high thermal conductivity, it can quickly transfer the heat generated by the non-refrigerated infrared detector 1 to the heat sink 3. The added microcapsule phase change material 13 further improves the thermal conductivity on this basis. These microcapsule phase change materials 13 encapsulate phase change substances that can change physical states within a specific temperature range, such as paraffin, inorganic salts or organic ester compounds. When the ambient temperature is high, these phase change substances will absorb heat and undergo a phase change from solid to liquid, thereby increasing heat capacity and improving overall heat conduction efficiency; when the ambient temperature drops, the phase change substance will solidify again and release the previously stored heat. In this way, the phase change material not only helps to dissipate heat quickly, but also effectively buffers transient temperature rise, further optimizing the heat dissipation system of the non-refrigerated dispersive infrared spectrometer.

[0050] For example, microcapsules of phase change materials with a particle size of micrometers can be added to the thermal grease layer to make them evenly distributed throughout the thermal grease layer. In order to ensure that the microcapsules maintain stable phase change properties and mechanical strength during long-term use, shell materials with good coating properties and high chemical stability can be selected. At the same time, in order to further improve the thermal conductivity, fillers with high thermal conductivity, such as boron nitride or aluminum oxide powder, can also be mixed into the thermal grease to build an efficient and reliable thermal management system.

[0051] As an optional implementation, the heat sink 3 of the non-cooled dispersive infrared spectroscopic gas imager adopts a multi-channel heat dissipation structure, and each multi-channel is equipped with an independent micro fan 14. Through this structural design, the cooling efficiency of the entire imager in a high temperature environment can be significantly improved, thereby ensuring that the operating temperature of the non-cooled infrared detector 1 is maintained within the optimal range, and ensuring the stability and reliability of the equipment performance. The micro fan 14 in each channel can form an optimized air duct through precise design and arrangement, effectively conduct the heat generated by the detector, and prevent heat accumulation from causing temperature rise.

[0052] For example, the heat dissipation device 3 includes a plurality of heat dissipation channels arranged in parallel, each of which is equipped with an independent micro fan 14. The positions and directions of these micro fans 14 are carefully designed to ensure that the air can evenly remove heat when flowing through each channel. Each micro fan 14 is connected to a controller, which can automatically adjust the speed according to the ambient temperature and workload to provide the best cooling effect. Specifically, the controller monitors the working temperature of the detector in real time through a temperature sensor, and dynamically adjusts the speed of each micro fan 14 according to the temperature change, thereby achieving efficient temperature management. Such a design not only improves the heat dissipation efficiency, but also extends the service life of the imager and reduces maintenance costs.

[0053] As an optional implementation, the uncooled dispersive infrared spectroscopic gas imager is provided with a thermal buffer washer 15 at the connection between the dispersive element 4 and the light guide 5. The setting of the thermal buffer washer 15 can effectively absorb and buffer the conduction of heat from the external environment, further reducing the temperature fluctuation of the uncooled infrared detector 1. Since the working performance of the infrared imager depends largely on the temperature stability of the infrared detector, the presence of the thermal buffer washer 15 ensures that the infrared detector can maintain a stable working state even when the external environment temperature changes, thereby improving the overall reliability and detection accuracy of the imager.

[0054] Specifically, the thermal buffer gasket 15 is usually made of a material with excellent thermal conductivity and low thermal expansion coefficient, such as silicone or polytetrafluoroethylene. These materials can effectively block the transfer of external heat, while having little effect on the temperature control of the internal optical system. During installation, the thermal buffer gasket 15 is firmly fixed at the connection between the dispersion element 4 and the light pipe 5 to form a physical barrier. In this way, no matter how the external ambient temperature changes, the thermal buffer gasket 15 can ensure that the heat transferred to the infrared detector is kept at a low level, thereby effectively protecting the thermal stability and imaging performance of the detector.

[0055] As an optional implementation, the uncooled dispersive infrared spectroscopic gas imager adds an insulating protective cover 16 outside the uncooled infrared detector 1. The insulating protective cover 16 can effectively isolate the heat in the external environment, ensure the temperature stability of the detector under different temperature conditions, and thus improve the overall performance and reliability of the imager. The design of the insulating protective cover 16 can not only protect the detector from external physical damage, but also reduce the impact of heat conduction on the detector, ensuring the stable performance of the detector during long-term operation.

[0056] Specifically, the insulating protective cover 16 is made of high temperature resistant materials, such as ceramic fiber or polyimide film, which have excellent thermal insulation performance and mechanical strength. The insulating protective cover 16 covers the outside of the non-refrigerated infrared detector 1 and fits closely therewith to ensure the heat insulation effect. In order to facilitate installation and maintenance, the insulating protective cover 16 can be fixed to the outer casing of the detector by buckles or screws to ensure the firmness and convenience of installation. The structural design of the insulating protective cover 16 also takes into account the need for ventilation and heat dissipation to prevent the internal temperature from being too high. By optimizing its thickness and material, it is possible to achieve the heat dissipation requirements of internal components while maintaining insulation performance.

[0057] In actual operation, when this device is used, the uncooled infrared detector 1 will first receive the infrared radiation signal from the target area. The uncooled infrared detector 1 has high sensitivity and stability, and can convert the received infrared radiation signal into an electrical signal for subsequent processing and analysis. In order to ensure the efficiency and accuracy of signal transmission, the lens group 2 is arranged at the front end of the uncooled infrared detector 1, which is responsible for focusing and conducting the infrared radiation signal from the target area, so that the infrared radiation signal can be accurately transmitted to the photosensitive surface of the infrared detector. At the same time, the heat dissipation device 3 is tightly attached to the back of the uncooled infrared detector 1. It is made of efficient thermal conductive material, which can effectively reduce the temperature fluctuation generated by the infrared detector during operation, thereby ensuring the performance stability and measurement accuracy of the detector. The dispersion element 4 is located between the lens group 2 and the uncooled infrared detector 1. Its function is to perform spectroscopic processing on the transmitted infrared radiation signal, separate infrared radiation of different wavelengths, and then realize the distinction and identification of different gas components. To ensure that the infrared radiation signal can be transmitted smoothly along the predetermined path, one end of the light pipe 5 is connected to the lens group 2, and the other end is connected to the dispersion element 4, forming a complete optical path system. In addition, a layer of thermal conductive silicone grease is provided on the contact surface between the heat sink 3 and the uncooled infrared detector 1, which further improves the heat conduction efficiency, helps to maintain the best working state of the infrared detector for a long time, and ensures the imaging quality and reliability. This series of components working together constitutes an efficient and stable uncooled dispersion infrared spectroscopic gas imager, which provides strong technical support for various gas detection and environmental monitoring.

[0058] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An uncooled dispersive infrared spectroscopy gas imager, characterized in that: include: An uncooled infrared detector (1) is used to receive and convert infrared radiation signals from a target area; A lens group (2) is arranged at the front end of the uncooled infrared detector (1) and is used to focus and transmit the infrared radiation signal to the uncooled infrared detector (1); A heat dissipation device (3) is closely mounted on the back of the non-cooling type infrared detector (1) and is used to reduce the temperature fluctuation of the non-cooling type infrared detector (1); A dispersion element (4) is arranged between the lens group (2) and the uncooled infrared detector (1) and is used to perform spectroscopic processing on the infrared radiation signal to achieve differentiation and identification of different gas components; A light guide (5), one end of which is connected to the lens group (2) and the other end of which is connected to the dispersion element (4), and is used to transmit the infrared radiation signal along a predetermined path; Wherein, a thermally conductive silicone grease layer is provided on the contact surface between the heat dissipation device (3) and the non-refrigerated infrared detector (1), and the thermally conductive silicone grease layer includes a microcapsule phase change material (13); The heat dissipation device (3) comprises a plurality of layers of composite heat dissipation fins (8), and a heat conductive coating (9) is coated between each layer of the heat dissipation fins (8).

2. The uncooled dispersive infrared spectroscopic gas imager according to claim 1, characterized in that: The lens group (2) comprises a plurality of optical lenses (6), wherein the optical lenses (6) are optical lenses with high light transmittance, and a heat insulating material (7) is filled between each of the optical lenses (6).

3. The uncooled dispersive infrared spectroscopic gas imager according to claim 1, characterized in that: The thermal conductivity of the thermal conductive coating (9) is higher than the thermal conductivity of the heat sink (8).

4. An uncooled dispersive infrared spectroscopic gas imager according to any one of claims 1 to 3, characterized in that: The heat dissipation device (3) adopts a multi-channel heat dissipation structure, and an independent micro fan (14) is arranged in each channel.

5. An uncooled dispersive infrared spectroscopic gas imager according to any one of claims 1 to 3, characterized in that: The dispersion element (4) comprises a double-layer structure, wherein the inner layer is a high-performance diffraction grating (10) and the outer layer is a thermally stable coating (11).

6. An uncooled dispersive infrared spectroscopic gas imager according to any one of claims 1 to 3, characterized in that: A thermal buffer gasket (15) is installed at the connection between the dispersion element (4) and the light guide tube (5).

7. An uncooled dispersive infrared spectroscopic gas imager according to any one of claims 1 to 3, characterized in that: A multi-layer reflective coating (12) is provided on the inner wall of the light guide tube (5).

8. An uncooled dispersive infrared spectroscopic gas imager according to any one of claims 1 to 3, characterized in that: Paraffin is encapsulated inside the microcapsule phase change material (13).

9. An uncooled dispersive infrared spectroscopic gas imager according to any one of claims 1 to 3, characterized in that: The uncooled infrared detector (1) is an uncooled vanadium oxide infrared focal plane detector with an operating band greater than 8-14 μm, and a layer of insulating protective cover (16) is arranged outside the uncooled infrared detector (1).

10. The uncooled dispersive infrared spectroscopic gas imager according to claim 9, characterized in that: The insulating protective cover (16) is fixed to the outer shell of the non-refrigerated infrared detector (1) by means of buckles.

Images