Thermal imager and thermal imager adjusting method

Abstract

The invention discloses a thermal imager and a thermal imager adjusting method, and relates to the technical field of thermal imagers. The thermal imager comprises: a body housing in which a display module is fixed; the infrared module comprises a machine core module arranged in the machine body shell and a lens module fixedly connected with the machine core module, and the lens module, the machine core module and the display module are sequentially arranged from front to back in the first axial direction; a gap for the infrared module to move is formed between the infrared module and the machine body shell; and the adjusting assembly is connected with the infrared module and is used for driving the infrared module to translate or swing along the radial direction so as to adjust the position of the infrared module relative to the display module. During optical axis calibration, a traditional mode of adjusting a cursor on a display module is not needed, and the position of the infrared module can be adjusted by means of the adjusting assembly so as to adjust the optical axis position of the infrared module, so that an actual target coincides with the cursor, and the problem that the optical axis of the infrared module deviates from the cursor is solved; the method is suitable for a continuous zooming infrared gun aiming product with an electronic zooming function.

Description

Technical Field

[0001] This invention relates to the field of thermal imaging technology, and in particular to a thermal imager and a method for adjusting a thermal imager. Background Technology

[0002] Existing infrared gun sights require individual gun calibration during use due to assembly and manufacturing errors. This involves adjusting the position of the crosshair on the display module to align it with the actual target, which results in the crosshair not being centered on the display module.

[0003] For products with electronic zoom, the zoom is centered on the crosshair cursor on the display module. If the lens module adds continuous zoom functionality, the optical axis will no longer be at the crosshair cursor position when the focal length changes. This will cause a significant deviation in the optical axis position during electronic zoom, resulting in inaccurate targeting.

[0004] Because infrared gun sights have high requirements for the optical axis, most infrared gun sights on the market are single focal length, and there is a lack of infrared gun sights with continuous zoom (i.e., multiple focal lengths).

[0005] Therefore, how to reduce the impact of zoom on the accuracy of electronic zoom and enable the effective application of continuous zoom infrared products is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a thermal imager and a thermal imager adjustment method, which can reduce the impact of zoom on the accuracy of electronic zoom, and enable the continuous zoom function to be effectively applied in infrared products with electronic zoom function.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] The present invention provides a thermal imager, comprising: a housing with a display module fixed therein; an infrared module including a core module disposed within the housing and a lens module fixedly connected to the core module, wherein the lens module, the core module, and the display module are arranged sequentially from front to back along a first axial direction; a gap is provided between the infrared module and the housing for the infrared module to move; and an adjustment component connected to the infrared module for driving the infrared module to translate or swing radially to adjust the position of the infrared module relative to the display module.

[0009] In one exemplary embodiment, the lens module includes a continuously zoomable lens assembly.

[0010] In one exemplary embodiment, an eyepiece is also provided at the rear end of the housing; the display module is fixed inside the eyepiece, or fixed at the rear end of the housing near the eyepiece.

[0011] In one exemplary embodiment, the movement module is located at the front end of the body housing, and the lens module is located at the front end of the body housing; the adjustment component is located between the movement module and the body housing.

[0012] In one exemplary embodiment, one or more adjustment holes are radially through the housing; the adjustment assembly includes adjustment modules respectively connected to each of the adjustment holes, the adjustment modules extending into the corresponding adjustment holes and abutting against the infrared module, so that the infrared module can be pushed to translate or swing by moving radially in the corresponding adjustment holes through one or more of the adjustment modules.

[0013] In one exemplary embodiment, the adjusting hole is a threaded hole; the radially outer end of the adjusting module is provided with an external thread that engages with the threaded hole.

[0014] In one exemplary embodiment, the adjustment hole is a threaded hole; the adjustment module includes an adjustment knob and a driven adjustment ring; the adjustment knob is movably connected to the housing and is used to receive external force to rotate; the driven adjustment ring is connected to the adjustment knob and threadedly engaged with the adjustment hole, and the driven adjustment ring radially abuts against the infrared module, and the driven adjustment ring can be driven to move radially by rotating the adjustment knob.

[0015] In one exemplary embodiment, the adjustment module is provided on only one side of the outer periphery of the infrared module along the same radial direction, and an elastic element is also provided in the housing to provide elastic force to the corresponding infrared module in a direction close to the adjustment module; and / or, the adjustment module is provided on two opposite sides of the outer periphery of the infrared module along the same radial direction.

[0016] In one exemplary embodiment, a ball joint bracket extending into the housing is further included, and the infrared module is fixedly connected to the ball joint bracket; the inner circumferential surface of the housing and the outer circumferential surface of the ball joint bracket are spherically engaged, and the adjustment module abuts against the ball joint bracket and / or the infrared module.

[0017] In one exemplary embodiment, the inner circumferential surface of the housing includes a first spherical surface, and the outer circumferential surface of the ball head bracket includes a second spherical surface that rotatably engages with the first spherical surface; the center of the first spherical surface and the center of the second spherical surface are at the same position, and the positions of the center of the spherical surface and the adjustment module are offset along the first axial direction.

[0018] In one exemplary embodiment, the ball head support includes a first frame disposed along the first axis at its rear end, the ball center and the first frame being arranged sequentially along the first axis; the adjustment module abuts against the first frame.

[0019] In one exemplary embodiment, the adjustment module includes a first adjustment module and a second adjustment module. The first adjustment module and the first frame are arranged sequentially along a first radial direction, and the first adjustment module can move along the first radial direction to push the first frame. The second adjustment module and the first frame are arranged sequentially along a second radial direction, and the second adjustment module can move along the second radial direction to push the first frame. The first axial direction, the first radial direction, and the second radial direction are perpendicular to each other.

[0020] In one exemplary embodiment, the adjustment module abuts against a first frame on the ball head bracket, the first frame being an annular frame extending along a second radial direction perpendicular to the first axis; a battery mounting port is also provided on the housing, through which the first battery module is detachably mounted in the annular frame, and in a direction perpendicular to the first axis, there is a gap between the inner wall of the annular frame and the outer surface of the first battery module.

[0021] In one exemplary embodiment, the housing includes a main housing and a front ring plate disposed on the outer side of the front end of the main housing. A first pressure ring is sleeved on the outer side of the main housing. The lens module is attached to the front end face of the front ring plate. The first pressure ring is located on the rear side of the front ring plate and is fixedly connected to the lens module. There is a radial gap between the inner circumferential surface of the first pressure ring and the outer circumferential surface of the main housing.

[0022] Another aspect of the present invention provides a thermal imager adjustment method, applied to the thermal imager mentioned above, comprising: controlling a cursor to be at the center position of the display module; controlling a lens module to be held at a selected focal length; determining the position of an actual target on the display module; and adjusting the relative position of the infrared module to the display module in the radial direction through the adjustment component, so that the actual target coincides with the cursor position on the display module.

[0023] The thermal imager provided by the present invention includes: a housing with a display module fixed inside; an infrared module including a core module disposed inside the housing and a lens module fixedly connected to the core module, wherein the lens module, the core module and the display module are arranged sequentially from front to back along a first axial direction; a gap is provided between the infrared module and the housing for the infrared module to move; and an adjustment component connected to the infrared module for driving the infrared module to translate or swing radially to adjust the position of the infrared module relative to the display module.

[0024] When the adjustment component is not in use, the infrared module can be fixed to the outer casing via the adjustment component. When adjustment is required, the infrared module, driven by the adjustment component, adjusts its radial relative position to the display module. During adjustment, a cursor is positioned at the center of the display module and remains stationary. By moving the infrared module, the actual target can be aligned with the cursor on the display module, thus calibrating the product's optical axis and ensuring that the optical axis is centered on the cursor on the display module.

[0025] At this time, during optical axis calibration, there is no need to use the traditional method of adjusting the cursor on the display module. Instead, the position of the infrared module can be adjusted using the adjustment component, so that the cursor on the display module is kept in the selected position. The optical axis position of the infrared module is adjusted so that the actual target is aligned with the cursor on the display module. This solves the problem of the optical axis of the infrared module deviating from the cursor, reduces the impact of zoom on the accuracy of electronic zoom, and is suitable for continuous zoom infrared gun sights with electronic zoom function. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0027] Figure 1 This is an external view of the thermal imager provided in a specific embodiment of the present invention;

[0028] Figure 2 for Figure 1 A partial structural diagram of a thermal imager;

[0029] Figure 3 for Figure 1 A cross-sectional view of a thermal imager perpendicular to the Y-axis;

[0030] Figure 4 for Figure 3 AA cross-section view;

[0031] Figure 5 This is a structural diagram of an infrared module according to a specific embodiment of the present invention;

[0032] Figure 6 for Figure 5 A partial structural diagram;

[0033] Figure 7 This is a connection structure diagram of the first pressure ring, the movement bracket, and the outer casing of the machine body, provided in a specific embodiment of the present invention;

[0034] Figure 8 A comparison diagram of the actual target's position change on the display module in a specific embodiment of the present invention;

[0035] Figure 9 An external view of another thermal imager provided in a specific embodiment of the present invention;

[0036] Figure 10 for Figure 9 A cross-sectional view perpendicular to the second radial direction Y;

[0037] Figure 11 for Figure 10 Enlarged view of point K;

[0038] Figure 12 for Figure 9 A cross-sectional view perpendicular to the first radial direction Z;

[0039] Figure 13 for Figure 12 Enlarged view at point F;

[0040] Figure 14 for Figure 12 Enlarged view of point G;

[0041] Figure 15 for Figure 9 A cross-sectional view perpendicular to the first axis X;

[0042] Figure 16 This is an assembly diagram of the ball head bracket and elastic element according to a specific embodiment of the present invention;

[0043] Figure 17 This is a first structural diagram of the ball head bracket according to a specific embodiment of the present invention;

[0044] Figure 18 This is a second structural diagram of the ball head bracket according to a specific embodiment of the present invention.

[0045] Figure label:

[0046] Eyepiece 1;

[0047] Lens module 2, lens base 21, lens assembly 22, focus knob 23;

[0048] 3. Body shell, 31. Adjustment hole, 32. Main shell, 33. Front ring plate, 34. Battery cover, 35. Fixing cylinder, 36. First spherical surface, 37. Second pressure ring, 38. Limiting spherical ring, 39. Battery mounting port, 310.

[0049] First pressure ring 4, clearance groove 41;

[0050] Movement module 5, movement bracket 51, movement 52, side plate 53, positioning plane 54;

[0051] First fastener 6;

[0052] Display module 7, crosshair cursor 71, actual target 72;

[0053] Adjustment module 8, first adjustment module 81, second adjustment module 82, driven adjustment ring 83, adjustment knob 84, rotating wheel 841, limit ring 842, rotating cap 843, guide structure 85;

[0054] First battery module 9;

[0055] Control module 10;

[0056] Distance measuring module 11;

[0057] Ball head support 12, first frame 121, second spherical surface 122, second frame 123, third frame 124;

[0058] Second battery module 13;

[0059] Infrared module 14;

[0060] Elastic element 15. Detailed Implementation

[0061] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0062] The core of this invention is to provide a thermal imager and a thermal imager adjustment method that can reduce the impact of zoom on the accuracy of electronic zoom, enabling the continuous zoom function to be effectively applied in infrared products with electronic zoom capabilities. Here, electronic zoom refers to the technology of locally magnifying or reducing the infrared thermal image through digital image processing, and continuous zoom refers to the ability to continuously change the lens focal length. The continuous zoom lens module can smoothly and uninterruptedly adjust the lens focal length mechanically.

[0063] For a specific embodiment of the thermal imager provided by this invention, please refer to [the specific embodiment]. Figures 1 to 7 It includes the outer casing 3, the infrared module 14, and the adjustment components.

[0064] like Figure 3As shown, a display module 7 is fixed inside the housing 3, and the display module 7 may specifically include a display screen. The infrared module 14 includes a core module 5 disposed inside the housing 3 and a lens module 2 fixedly connected to the core module 5. The lens module 2, the core module 5, and the display module 7 are arranged sequentially from front to back along the first axis X. There is a gap between the infrared module 14 and the housing 3 to allow the infrared module 14 to move.

[0065] The adjustment component is connected to the infrared module 14 and is used to drive the infrared module 14 to translate or swing radially to adjust the position of the infrared module 14 relative to the display module 7. Specifically, in this embodiment, the position of the infrared module 14 relative to the display module 7 is adjusted by radial translation.

[0066] It should be noted that, in the embodiments of this application, unless otherwise specified, "front" and "back" refer to two directions along the first axis X. Figure 1 For example, the front end is the left end, and the rear end is the right end. Furthermore, unless otherwise specified, both radial and circumferential directions are based on the first axial direction X.

[0067] Furthermore, since there are countless radial directions perpendicular to the first axis X, one or more of these radial directions can be selected, causing the adjustment component to move (translate or oscillate) the infrared module 14 relative to the selected radial direction. For example... Figure 1 In this configuration, two radial directions, a first radial direction Z and a second radial direction Y, are selected that are perpendicular to the first axial direction X. The adjusting component can then move the infrared module 14 along the first radial direction Z and the second radial direction Y. The first radial direction Z and the second radial direction Y can be perpendicular. For a radial direction not specifically specified, it can be understood as one or more suitable radial directions perpendicular to the first axial direction X.

[0068] Of course, in other embodiments, the movement of the infrared module 14 can also be such that the adjusting component drives the infrared module 14 to swing radially. Specifically, the infrared module 14 has rotational freedom relative to one or more radial directions, and the infrared module 14 can swing about a radial line extending along a selected radial direction. For example... Figure 9 In the middle, the infrared module 14 can swing around a radial line on the first radial direction Z and a radial line on the second radial direction Y.

[0069] Thermal imagers can be specifically applied to infrared gun sights.

[0070] When the adjustment component is not being adjusted, the infrared module 14 can be fixed to the housing 3 via the adjustment component; when adjustment is required, the infrared module 14, driven by the adjustment component, adjusts its radial relative position to the display module 7. For example, refer to... Figure 8During the adjustment process, the crosshair cursor 71 at the center of the display module 7 remains stationary. By moving the infrared module 14, the actual target 72 can be aligned with the crosshair cursor 71 on the display module 7, thus calibrating the optical axis of the product and ensuring that the optical axis is at the center of the crosshair on the display module 7. The crosshair cursor 71 on the display module 7 can also be replaced with other shapes that indicate the center position, such as a dot.

[0071] At this time, during optical axis calibration, it is not necessary to use the traditional method of adjusting the crosshair 71 on the display module 7. Instead, the position of the infrared module 14 can be adjusted by using the adjustment component to keep the crosshair 71 on the display module 7 in the selected position. The optical axis position of the infrared module 14 is adjusted so that the actual target 72 is aligned with the crosshair 71 on the display module 7. This solves the problem of the optical axis of the infrared module 14 deviating from the crosshair 71, reduces the impact of zoom on the accuracy of electronic zoom, and is suitable for continuous zoom infrared gun sights with electronic zoom function.

[0072] Furthermore, such as Figure 3 As shown, the thermal imager also includes an eyepiece 1 located at the rear end of the housing 3. The display module 7 is fixed within the housing 3 at its rear end near the eyepiece 1. In this configuration, along the first axis X, the lens module 2, the core module 5, the display module 7, and the eyepiece 1 are arranged sequentially from front to back. The display module 7 and the eyepiece 1 can be assembled and maintained separately. Exemplarily, during assembly, the display module 7 is first fixedly connected to the eyepiece 1, and then the eyepiece 1 is fixed to the housing 3 with screws. In other embodiments, the display module 7 can also be fixed inside the eyepiece 1.

[0073] Furthermore, in the infrared module 14, such as Figure 3 As shown, the core module 5 is located at the front end of the body housing 3, and the lens module 2 is located at the front end of the body housing 3. That is, at least part of the structure of the lens module 2 extends out of the front end of the body housing 3. For example, the lens module 2 can be completely placed outside the body housing 3, which can reduce the volume of the body housing 3 and facilitate focusing and other operations from the exposed position of the lens module 2.

[0074] In some embodiments, the adjustment component is located between the core module 5 and the housing 3. In this case, the adjustment component is not directly connected to or in contact with the lens module 2. The adjustment component directly drives the core module 5 to move, thereby driving the infrared module 14 to move as a whole. In other embodiments, the adjustment component may also directly drive the lens module 2 to move, or directly drive another structure fixed to the infrared module 14 to move. Optionally, the radial inner end of each adjustment module 8 may respectively abut against the core bracket 51. By driving the adjustment module 8, the core bracket 51 drives the core module 5 and the lens module 2 to move radially as a whole.

[0075] Of course, in other embodiments, a portion of the rear end of the lens module 2 can be inserted into the housing 3, and the inner radial end of the adjustment module 8 can be pressed against the lens module 2 and directly pushed radially.

[0076] In some embodiments, the adjustment component abuts against the infrared module 14, that is, the two are in contact but not directly connected. See details [link to relevant documentation]. Figure 4 The adjustment module 8 abuts against the infrared module 14 radially, and moves radially to push the infrared module 14 to translate or swing. In other embodiments, the adjustment component can also be connected to the infrared module 14 in other ways. For example, the adjustment component includes an adjustment rod with one end fixed to or rotatably connected to the infrared module 14, and the other end of the adjustment rod extending out of the housing 3. By pushing or pulling the adjustment rod, the infrared module 14 can be driven to translate or swing.

[0077] In some embodiments, in order to enable smooth radial movement of the movement module 5, the movement module 5 is located on the inner side of the front end of the housing 3 and has a first radial gap with the housing 3 to avoid the housing 3 interfering with the radial position adjustment of the movement module 5.

[0078] In some embodiments, such as Figure 5 As shown, the movement module 5 includes a movement bracket 51 and a movement 52 fixed on the movement bracket 51. The movement bracket 51 is fixedly connected to the outer casing 3.

[0079] Furthermore, the adjustment assembly includes one or more adjustment modules 8 connected to the housing 3. For example... Figure 2 As shown, one or more adjustment holes 31 are radially arranged through the outer casing 3. Each adjustment module 8 is connected to one of the adjustment holes 31, with a one-to-one correspondence. Figure 4 As shown, the adjustment module 8 extends into the corresponding adjustment hole 31 and abuts against the infrared module 14, so that one or more adjustment modules 8 can move radially in the corresponding adjustment hole 31, thereby pushing the infrared module 14 to translate or swing. This type of adjustment assembly has a simple structure and is easy to assemble and operate.

[0080] In some embodiments, such as Figure 4 As shown, one or more adjustment holes 31 penetrate the fuselage housing 3 along the first radial direction Z and the second radial direction Y, which are perpendicular to the first axial direction X.

[0081] In some embodiments, the adjustment hole 31 is a threaded hole. The adjustment module 8 is a stop screw threaded into the adjustment hole 31, which can move radially by rotating in the adjustment hole 31 and adjust the position of the movement module 5 radially.

[0082] Specifically, such as Figure 3 As shown, the radial outer end of the adjustment module 8 is threaded into the external thread of the adjustment hole 31, thereby reducing or avoiding the length of the adjustment module 8 protruding radially from the housing 3, ensuring aesthetic appearance, and preventing accidental pushing or rotating of the adjustment module 8. At this time, the radial position of the adjustment module 8 can be adjusted using tools such as a screwdriver.

[0083] Alternatively, in other embodiments, the adjustment hole 31 may not be threaded, but instead be locked to the adjustment module 8 by friction damping, or by a snap-fit ​​structure between the two, to fix the adjustment module 8 after its position is adjusted. In this case, the adjustment module 8 can be radially translated to push the infrared module 14. Alternatively, the adjustment module 8 may include a knob external to the housing 3, whose rotation drives the radially inner end of the adjustment module 8 to move radially, facilitating operation.

[0084] In some embodiments, adjustment modules 8 are respectively provided on two opposite sides of the outer periphery of the infrared module 14 along the same radial direction, for example... Figure 4 In the middle, two adjustment holes 31 are located on both sides of the main body module 5 on the first radial direction Z, and two adjustment holes 31 are located on both sides of the main body module 5 on the second radial direction Y. After the adjustment is completed, the infrared module 14 is limited by the adjustment modules 8 fixed to the outer shell 3 on both sides of the same radial direction, and the stability is good.

[0085] Alternatively, in other embodiments, an adjustment module 8 can be provided on only one side of the outer periphery of the infrared module 14 in the same radial direction. This adjustment module 8 cooperates with the elastic element 15 in the housing 3 to position the infrared module 14. In this case, radial adjustment of the infrared module 14 can be achieved through a single adjustment module 8, making operation convenient. The elastic element 15 provides a spring force to the corresponding infrared module 14 in a direction close to the adjustment module 8. Optionally, the elastic element 15 can be a compression spring or sheet pressing down on the infrared module 14, or a tension spring pulling on the infrared module 14; the elastic element 15 can be connected to the housing 3 and / or the infrared module 14.

[0086] Specifically, such as Figures 9 to 18 As shown in the embodiments corresponding to these figures, an adjustment module 8, namely the first adjustment module 81, is provided on one side of the infrared module 14 in the first radial direction Z, and an adjustment module 8, namely the second adjustment module 82, is provided on one side of the infrared module 14 in the second radial direction Y. An elastic element 15 is provided in the housing 3 between the first radial direction Z and the second radial direction Y. The elastic force provided by the elastic element has components in the first radial direction Z and the second radial direction Y, so that the cooperation with multiple radial adjustment modules 82 can be achieved through a single elastic element 15. Alternatively, on each radial direction where an adjustment module 8 is provided on one side, a separate elastic element 15 can be provided for each radial direction.

[0087] Of course, the above two situations can also exist in the same thermal imager. In this case, one (e.g., the first radial direction Z) or some radial directions, adjustment modules 8 are respectively provided on two opposite sides along the same radial direction, and another (e.g., the second radial direction Y) or some radial directions, adjustment modules 8 are only provided on one side of the same radial direction.

[0088] In some embodiments, a plurality of adjustment modules 8 are evenly arranged on the outer periphery of the movement module 5. For example... Figure 4 As shown, four adjustment modules 8 are evenly arranged on the outer periphery of the movement module 5, with adjacent adjustment modules 8 spaced 90° apart, corresponding to... Figure 4 The position of the movement module 5 can be fully adjusted in four directions (up, down, left, and right) from the perspective.

[0089] Furthermore, to achieve the connection between lens module 2 and mechanism module 5, such as... Figures 4 to 6 As shown, the lens module 2 is connected to the camera module 5 via a first fastener 6, which facilitates the connection. The first fastener 6 can be a fastening screw; specifically, the lens module 2 is screwed to the camera bracket 51. The first fastener 6 passes through the camera module 5 from back to front and connects to the lens module 2.

[0090] In some embodiments, a plurality of first fasteners 6 are disposed radially inner to each adjustment module 8 in a one-to-one correspondence. (See reference...) Figure 4 Each adjustment module 8 has a first fastener 6 collinearly arranged on its inner side in the corresponding radial direction. At this time, the adjustment module 8 acts on the area with the highest connection stiffness between the lens module 2 and the movement module 5, and can shorten the force transmission path, thereby improving the driving efficiency and accuracy.

[0091] Furthermore, to achieve the contact and cooperation between the movement module 5 and the adjustment component, such as Figure 5 and Figure 6 As shown, the outer periphery of the movement module 5 has multiple side plates 53, for example, four. Optionally, multiple side plates 53 are sequentially arranged on the outer periphery of the front end of the movement bracket 51 along the first axial direction X. The side plates 53 are equally distributed and correspond one-to-one with the adjustment modules 8. Optionally, the first fastener 6 is also fixedly connected to the side plate 53. The outer peripheral surface of the side plate 53 includes a positioning plane 54 parallel to the first axial direction X. The inner end of each adjustment module 8 in the radial direction abuts against the corresponding positioning plane 54. The positioning plane 54 is perpendicular to the radial movement direction of the corresponding adjustment module 8. The vertical cooperation between the adjustment module 8 and the side plate 53 can improve the smoothness of the push.

[0092] In some embodiments, such as Figure 4 and Figure 5As shown, the outer circumferential surface of the side plate 53 is a C-shaped surface that protrudes radially outward, including a positioning plane 54 and a first arc-shaped surface and a second arc-shaped surface located on both sides of the positioning plane 54 in the circumferential direction. This helps to reduce the volume of the side plate 53 and has a weight reduction effect. The first arc-shaped surface and the second arc-shaped surface can be located on a cylindrical surface. During the machining process, the positioning plane 54 can be directly cut on the cylindrical surface.

[0093] Furthermore, to achieve the connection between the lens module 2 and the body shell 3, such as... Figure 1 , Figure 4 and Figure 7 As shown, the housing 3 includes a main housing 32 and a front ring plate 33 located on the outer side of the front end of the main housing 32. An adjustment hole 31 is formed on the main housing 32. A first pressure ring 4 is fitted onto the outer side of the main housing 32. The lens module 2 is fitted to the front end face of the front ring plate 33. The first pressure ring 4 is located on the rear side of the front ring plate 33 and is fixedly connected to the lens module 2. The lens module 2 and the front ring plate 33 are slidably engaged, specifically in a planar engagement. The front end face of the front ring plate 33 is perpendicular to the first axis X to ensure that the lens module 2 can be smoothly displaced perpendicular to the first axis X. In addition, there is a radial gap between the inner circumferential surface of the first pressure ring 4 and the outer circumferential surface of the main housing 32 to prevent the first pressure ring 4 from interfering with the position adjustment of the lens module 2 perpendicular to the first axis X.

[0094] In some embodiments, such as Figure 3 As shown, the lens module 2 includes a lens assembly 22 and a lens base 21. The lens base 21 is the rear structure of the lens module 2. The lens base 21 is connected to the core module 5 and fits snugly with the body shell 3. The first retaining ring 4 is locked to the rear end of the lens base 21 along the first axis X. The lens base 21 is pressed against the front end of the body shell 3 along the first axis X, so that the relative position of the lens module 2 and the body shell 3 is fixed along the first axis X. This structure of the lens base 21 in the lens module 2 and the radial gap between the first retaining ring 4 and the body shell 3 can be radially adjusted to adjust their relative position.

[0095] In some embodiments, such as Figure 2 , Figure 5 and Figure 6 As shown, a relief groove 41 is radially provided through the rear end of the first pressure ring 4, and the front end of the adjustment module 8 is exposed radially through the relief groove 41. At this time, the relief groove 41 can avoid the tool driving the adjustment module 8, and can also serve as a positioning structure to ensure the collinearity of the tool and the adjustment module 8, preventing the tool from being misaligned and causing the adjustment module 8 to be subjected to radially deviated forces. Furthermore, the relief groove 41 is located within the first pressure ring 4 to prevent damage to the lens module 2.

[0096] Furthermore, the thermal imager also includes an electronic zoom module, and both the electronic zoom module and the display module 7 can be electrically connected to the main control board. Additionally, the lens module 2 includes a lens assembly 22, which is a continuous zoom lens assembly, enabling the thermal imager to perform both electronic zoom and continuous zoom functions. In other embodiments, the lens assembly 22 can also be a single-focal-length or dual-focal-length lens assembly.

[0097] In another embodiment, where the adjustment component drives the infrared module 14 to swing radially to adjust the position of the infrared module 14 relative to the display module 7, the specific implementation method can be found in [reference needed]. Figures 9 to 18 One or more adjustment holes 31 are provided radially through the outer casing 3. The adjustment assembly includes adjustment modules 8 respectively connected to each adjustment hole 31. The adjustment modules 8 extend into the corresponding adjustment hole 31 and abut against the infrared module 14, so that the infrared module 14 can be pushed to swing by moving radially in the corresponding adjustment hole 31 through one or more adjustment modules 8.

[0098] Specifically, such as Figure 11 As shown, the adjustment hole 31 is a threaded hole. The adjustment module 8 includes an adjustment knob 84 and a driven adjustment ring 83. The adjustment knob 84 is movably connected to the housing 3 and is used to rotate in response to external force. Specifically, the adjustment knob 84 only rotates and does not move in the direction of its extension around the center line of rotation. One end of the driven adjustment ring 83 is connected to the adjustment knob 84, and the other end is threaded into the adjustment hole 31. The radially inner end of the driven adjustment ring 83 abuts against the infrared module 14. By rotating the adjustment knob 84, the driven adjustment ring 83 can be driven to move radially, thereby radially pushing the infrared module 14.

[0099] It should be noted that when the adjusting knob 84 drives the driven adjusting ring 83, since the driven adjusting ring 83 is threadedly engaged with the adjusting hole 31, the thread plays a guiding role. The driven adjusting ring 83 is actually performing a helical motion, and its component motion includes radial movement.

[0100] It is understood that this adjustment module 8 can be used interchangeably with the adjustment module 8 in the other embodiments described above. For example, in the embodiment described above that uses a stop screw as the adjustment module 8, this adjustment module 8 with an adjustment knob 84 and a driven adjustment ring 83 can also be used instead.

[0101] At this time, simply turn the adjustment knob 84 to drive the driven adjustment ring 83 to move radially, which is convenient to operate; and the adjustment knob 84 can be placed outside the machine body shell 3, which can be directly adjusted manually without the need for tools.

[0102] In some embodiments, to facilitate the assembly of the adjustment module 8, the adjustment hole 31 can be directly formed in the shell wall of the housing 3, or, as... Figure 11As shown, a fixing cylinder 35 is also fixedly connected to the outer side of the housing 3. The fixing cylinder 35 is connected to and communicates with the mounting through hole on the housing 3. The adjustment hole 31 includes the inner hole of the fixing cylinder 35. The driven adjustment ring 83 (or other type of threaded adjustment module 8 connected to the adjustment hole 31) is threaded to the thread on the inner circumferential surface of the fixing cylinder 35. The adjustment module 8 extends into the housing 3 through the mounting through hole and abuts against the infrared module 14 at its radially inner end. Optionally, the fixing cylinder 35 can be integrally formed into the housing 3; or assembled by means of plug-in, snap-fit, etc., and a sealing ring is also provided between the fixing cylinder 35 and the housing 3 for sealing connection.

[0103] At this time, by setting up a separate fixing cylinder 35, a separate space can be provided to accommodate the adjustment module 8, so as to avoid the addition of the adjustment module 8 occupying the original space of the outer casing 3 and affecting the original arrangement of the components.

[0104] Preferably, the fixed cylinder 35, the driven adjusting ring 83, and the adjusting knob 84 can be a unified whole module, which is then installed as a whole on the outer casing 3 after assembly.

[0105] Furthermore, to achieve the driving of the driven adjusting ring 83 by the adjusting knob 84, such as... Figure 11 As shown, the adjusting knob 84 and the driven adjusting ring 83 are provided with a guide structure 85, which specifically includes a groove on the adjusting knob 84 and a block on the driven adjusting ring 83. The groove is parallel to a selected radial direction, such as a first radial direction Z or a second radial direction Y, specifically consistent with the radial through direction of the adjusting hole 31 connected to the adjusting module 8. The block is radially slidably connected to the groove. At this time, when the adjusting knob 84 is rotated, there is a torsional driving force between the block and the groove, and under the thread limit of the adjusting ring 83 and the adjusting hole 31, the driven adjusting ring 83 performs a helical motion with radial component motion.

[0106] In some embodiments, to prevent the adjustment knob 84 from moving in the direction of its rotation centerline (e.g., Figure 11 In the middle, the adjusting knob 84 rotates around the center line of the first radial direction Z, but does not move along the first radial direction Z. Figure 13 In the middle, the adjusting knob 84 rotates around the center line of the second radial direction Y (without moving along the second radial direction Y), so that Figure 11For example, the adjusting knob 84 includes a rotating wheel 841, a limiting ring 842, and a cap 843. The rotating wheel 841 is rotatably connected to the fixed cylinder 35 and extends into the adjusting hole 31, but is not threaded into the adjusting hole 31. The limiting ring 842 is sleeved on the outside of the rotating wheel 841. The outer circumference of the rotating wheel 841 has a convex ring, which is radially sandwiched between the limiting ring 842 and the inner wall stepped surface of the adjusting hole 31, thereby limiting the axial movement of the rotating wheel 841. The limiting ring 842 is rotatably connected to at least one of the rotating wheel 841 and the fixed cylinder 35. The cap 843 is sleeved on the radially outer end of the fixed cylinder 35 and on the outside of the limiting ring 842, and radially covers the limiting ring 842, the rotating wheel 841, and the fixed cylinder 35. The nut 843 is rotatably connected to the fixed cylinder 35 and fixedly connected to the rotating wheel 841. Specifically, the nut 843 and the rotating wheel 841 are rigidly fixed with screws, so that rotating the nut 843 can drive the rotating wheel 841 to rotate synchronously. Under the constraint of the limit ring 842, the nut 843 and the rotating wheel 841 do not move in the corresponding radial direction. In addition, the guide structure 85 is disposed between the rotating wheel 841 and the driven adjusting ring 83.

[0107] Furthermore, to achieve the oscillation of the infrared module 14, such as Figure 14 , Figures 16 to 18 As shown, the thermal imager also includes a ball-head bracket 12 extending into the housing 3. Specifically, the ball-head bracket 12 extends wholly or partially into the housing 3. The infrared module 14 is fixedly connected to the ball-head bracket 12 so that it can move synchronously. The inner circumferential surface of the housing 3 and the outer circumferential surface of the ball-head bracket 12 are spherically fitted. The adjustment module 8 abuts against the ball-head bracket 12. The spherical fit provides a swing fulcrum, allowing the infrared module 14 to swing stably with the ball-head bracket 12, and preventing the adjustment module 8 from directly contacting the infrared module 14 and causing impact damage. Of course, in other embodiments, the adjustment module 8 can also directly abut against the infrared module 14.

[0108] Specifically, such as Figure 14 As shown, the inner circumferential surface of the fuselage shell 3 includes a first spherical surface 36, and the outer circumferential surface of the ball head bracket 12 includes a second spherical surface 122 that rotatably engages with the first spherical surface 36. The center O of the first spherical surface 36 and the center O of the second spherical surface 122 are at the same position, but the center O and the adjustment module 8 are offset along the first axial direction X. At this time, the ball head bracket 12 and its infrared module 14 swing around the center O under the push of the adjustment module 8.

[0109] It should be noted that the first sphere 36 and the second sphere 122 can be the entirety of a sphere in space, or a part of a whole sphere, such as 1 / 8, 1 / 6, etc. More specifically, the first sphere 36 and the second sphere 122 can retain a portion of annular intervals on the corresponding whole sphere.

[0110] In some embodiments, such as Figure 15 , Figure 17 and Figure 18 As shown, the ball head support 12 includes a first frame 121 located at its rear end, with the ball center O and the first frame 121 arranged sequentially along the first axis X. The adjustment module 8 abuts against the first frame 121. Specifically, as shown... Figure 10 and Figure 12 In terms of orientation, the center of the ball O is located at the front end of the ball head bracket 12, and the adjustment module 8 abuts against the rear end of the ball head bracket 12. By pushing the rear end of the ball head bracket 12 through the adjustment module 8, the ball head bracket 12 and its infrared module 14 swing around the front center of the ball O. At this time, the distance between the point of action of the adjustment module 8 and the center of the ball O in the first axis X is relatively large, that is, the lever arm of the adjustment module 8 relative to the center of the ball O is relatively long, which has a labor-saving effect when moving the adjustment module 8.

[0111] In some embodiments, such as Figure 15 As shown, at least two adjustment modules 8 are designated as a first adjustment module 81 and a second adjustment module 82. Figure 11 and Figure 15 As shown, the first adjustment module 81 and the first frame 121 are arranged sequentially along the first radial direction Z, and can move along the first radial direction Z to push the first frame 121. The second adjustment module 82 and the first frame 121 are arranged sequentially along the second radial direction Y, and can move along the second radial direction to push the first frame 121, thereby achieving the pushing of the infrared module 14 and the ball head bracket 12 from different radial directions. The first axial direction X, the first radial direction Z, and the second radial direction Y are perpendicular to each other.

[0112] In some embodiments, to improve the space utilization within the fuselage housing 3, such as Figure 11 , Figure 15 , Figure 17 and Figure 18 As shown, the first frame 121 is a ring-shaped frame extending along the second radial direction Y. At this time, refer to... Figure 15 With the penetrating direction of the ring frame as its axis, the first adjusting module 81 abuts against the outer circumferential surface of the ring frame, and the second adjusting module 82 abuts against the shaft end of the ring frame. A battery mounting port 39 is also provided on the outer casing 3. The first battery module 9 can be detachably installed inside the ring frame via the battery mounting port 39. The first battery module 9 is easy to install and remove, and convenient for replacement or charging.

[0113] Furthermore, in a direction perpendicular to the first axial direction X, there is a gap between the inner wall of the annular frame (i.e., the wall of the through hole therethrough) and the outer surface of the first battery module 9, so as to prevent the first battery module 9 from obstructing the radial movement of the first frame 121. Of course, in other embodiments, the first frame 121 may also be a flat structure, a block structure, or a structure of other shapes.

[0114] Optionally, a first battery compartment can also be provided inside the ring frame. A gap is provided between the first battery compartment and the inner wall of the ring frame. The first battery compartment encloses the first battery module 9 to separate the first battery module 9 from the first frame 121. The first battery compartment can be fixed inside the housing 3. The first battery module 9 can be detachably inserted into the first battery compartment. Alternatively, the first battery module 9 and the first battery compartment can be integrated and can be detachably installed in the housing 3.

[0115] Specifically, to ensure a gap between the first battery module 9 and the first frame 121, the inner hole of the first frame 121 can be elliptical in cross-section perpendicular to the second radial direction Y, as shown in the reference. Figure 18 After the optical axis is adjusted to the correct position, its short axis is parallel to the first radial direction Z (it may also have a small angle with the first radial direction Z after the optical axis is adjusted), and its long axis is parallel to the first axial direction X (it may also have a small angle with the first axial direction X after the optical axis is adjusted). Furthermore, the two ends of the first battery module 9 on the first radial direction Z can be cut off to fill the space between it and the inner wall of the annular frame, so as to ensure that the first adjustment module 81 on the first radial direction Z has sufficient radial movement space.

[0116] In addition, such as Figure 9 and Figure 12 As shown, a battery cover 34 is provided on the battery mounting port 39 to cover the battery mounting port 39. The battery cover 34 can be threaded to the battery mounting port 39 for easy installation and removal. At this time, in the second radial direction Y, the battery cover 34 and the second adjustment module 82 are respectively arranged on both sides of the infrared module 14.

[0117] In addition, to ensure power supply capacity, such as Figure 10 As shown, a second battery module 13 is also provided inside the housing 3. Specifically, it can be non-removable, always built into the housing 3, and can be located behind the infrared module 14 and in front of the display module 7. In this case, both the first battery module 9 and the second battery module 13 can be used to power the electrical components in the thermal imager.

[0118] In some embodiments, in the ball head support 12, such as Figure 17 and Figure 18 As shown, the second frame 123 and the third frame 124 are located sequentially along the forward direction from the front end of the first frame 121. The outer surface of the third frame 124 is a second spherical surface 122. The third frame 124 has a ring structure, and the mechanism module 5 and / or lens module 2 pass through the central through hole of the third frame 124. The second frame 123 is a plate-shaped bracket, which is fixedly connected to the control module 10, specifically including a PCB. The control module 10 can communicate with components such as the mechanism module 5 and the lens module 2.

[0119] In addition, such as Figure 16As shown, the elastic element 15 is connected to the ball head bracket 12, specifically an arc-shaped spring piece connected to the second frame 123. Its protruding position is supported on the inner wall of the outer shell 3. Its elastic force is inclined relative to the first radial direction Z and the second radial direction Y, and continuously provides a force inclined relative to the first radial direction Z and the second radial direction Y. It can work with the first adjustment module 81 and the second adjustment module 82 to maintain the stability of the ball head bracket 12 and prevent the tail end of the ball head bracket 12 from jumping.

[0120] Furthermore, to achieve the assembly of the infrared module 14 with the outer casing 3, such as... Figure 14 As shown, the infrared module 14 can be integrally assembled onto the outer casing 3. Optionally, refer to... Figure 9 and Figure 10 The infrared module 14 also includes a ranging module 11, which is fixed to the front of the lens module 2, and the core module 5 is fixed to the rear of the lens module 2, forming the first module. During assembly, the ranging module 11 is aligned with the optical axis of the lens module 2 and the core module 5 on the optical platform to ensure that the optical axis of the ranging module 11 is consistent with the optical axis of the lens module 2 and the core module 5. This helps the ranging module 11 to locate the target position in the center of the imaging system.

[0121] In addition, such as Figure 14 and Figure 16 As shown, the lens module 2 is fitted with a second pressure ring 37 and a limiting spherical ring 38. After the ranging module 11, the lens module 2 and the core module 5 are assembled into the first module, they are assembled together with the control module 10 and the elastic element 15 on the ball head bracket 12 to form the second module. The second module is inserted into the body housing 3 through the front port of the body housing 3. The limiting spherical ring 38 is placed on the front end of the inner wall of the body housing 3. Then, the second pressure ring 37 is screwed onto the body housing 3 to ensure that the infrared module 14 does not move along the first axis X. Then, the guide pin 310 is screwed into the lens module 2 through the body housing 3 to prevent the lens module 2 from rotating around the first axis X.

[0122] At this time, as Figure 14 As shown, the limiting spherical ring 38 and the first spherical surface 36 of the inner wall of the fuselage shell 3 can be arranged in front and behind, and the inner wall of the limiting spherical ring 38 and the first spherical surface 36 can be located on the same whole spherical surface in space, supporting the second spherical surface 122 of the ball head bracket 12 from different positions on the first axis X, thereby improving the stability of the rotation of the ball head bracket 12.

[0123] Alternatively, the adjustment assembly may include a ball joint adapter ring connecting the lens module 2 and the housing 3. By adjusting the ball joint adapter ring, the infrared module 14 can be swung radially to adjust the position of the lens module 2 relative to the display module 7 and the housing 3 perpendicular to the axial direction.

[0124] In addition to the thermal imager described above, the present invention also provides a thermal imager adjustment method, which can be applied to the thermal imager in the above embodiments.

[0125] A specific embodiment of the thermal imager adjustment method provided by this invention includes the following steps:

[0126] S1: Controls the crosshair cursor 71 to be in the center position of the display module 7.

[0127] Specifically, the crosshair cursor 71 being located at the center of the display module 7 means that the center intersection of the crosshair cursor 71 is located at the midpoint of the display module 7.

[0128] During adjustment, commands, such as coordinate information, can be input through the controller connected to the display module 7 to move the crosshair cursor 71 to the desired position. Alternatively, multiple navigation buttons can be set on the control panel to indicate different directions of movement. By pressing each navigation button, the crosshair cursor 71 can be adjusted to move in different directions.

[0129] S2: Control lens module 2 to maintain a selected focal length.

[0130] In S2, the lens module 2 can be kept at the current focal length directly, or the focusing element on the lens module 2 can be rotated, for example, by adjusting... Figure 9 The focus knob 23, which is connected to the lens assembly 22, is used to adjust the lens module 2 to any focal length.

[0131] The lens module 2 includes a continuous zoom lens assembly, and the thermal imager can also electronically zoom.

[0132] S3: Determine the position of the actual target 72 on the display module 7, and adjust the relative position of the infrared module 14 with the display module 7 in the radial direction by adjusting the component, so that the position of the actual target 72 coincides with the position of the crosshair 71 on the display module 7.

[0133] S3 can be performed during gun calibration. For example... Figure 8 In the left-middle image, when the midpoint of the actual target 72 deviates from the center intersection of the crosshair 71, the position of the infrared module is adjusted. Specifically, one or more adjustment modules 8 can be manually moved radially to cause the infrared module 14 to translate or swing, thus adjusting the position of the midpoint of the actual target 72 on the display module 7 until the midpoint of the actual target 72 coincides with the center intersection of the crosshair 71. Figure 8 The state shown in the middle right image.

[0134] After this adjustment, when zooming to other focal lengths, there is no need to readjust the gun. No matter how the focal length changes, the optical axis and the crosshair 71 will always coincide.

[0135] It should be noted that when an element is referred to as "fixing" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as "connecting" another element, it can be directly connected to the other element or there may be an intervening element. Furthermore, in the description of this invention, unless otherwise stated, "multiple," "multiple roots," and "multiple groups" mean two or more.

[0136] The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0137] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0138] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0139] The thermal imager and its adjustment method provided by this invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A thermal imager, characterized in that, include: The outer casing (3) has a display module (7) fixed inside it; The infrared module (14) includes a core module (5) disposed inside the housing (3) and a lens module (2) fixedly connected to the core module (5). The lens module (2), the core module (5) and the display module (7) are arranged sequentially from front to back along a first axis. There is a gap between the infrared module (14) and the housing (3) for the infrared module (14) to move. An adjustment component, connected to the infrared module (14), is used to drive the infrared module (14) to translate or swing radially to adjust the position of the infrared module (14) relative to the display module (7).

2. The thermal imager according to claim 1, characterized in that, The lens module (2) includes a continuously zoomable lens assembly (22).

3. The thermal imager according to claim 1, characterized in that, It also includes an eyepiece (1) located at the rear end of the housing (3); the display module (7) is fixed inside the eyepiece (1), or fixed at the rear end of the housing (3) near the eyepiece (1).

4. The thermal imager according to claim 1, characterized in that, The mechanism module (5) is located at the front end of the body shell (3), and the lens module (2) is located at the front end of the body shell (3); the adjustment component is located between the mechanism module (5) and the body shell (3).

5. The thermal imager according to claim 1, characterized in that, One or more adjustment holes (31) are provided radially through the outer casing (3); The adjustment assembly includes adjustment modules (8) respectively connected to each of the adjustment holes (31). The adjustment modules (8) extend into the corresponding adjustment holes (31) and abut against the infrared module (14) so ​​that the infrared module (14) can be translated or oscillated by moving radially in the corresponding adjustment holes (31) through one or more of the adjustment modules (8).

6. The thermal imager according to claim 5, characterized in that, The adjustment hole (31) is a threaded hole; the radial outer end of the adjustment module (8) is provided with an external thread that is threaded to the threaded hole.

7. The thermal imager according to claim 5, characterized in that, The adjusting hole (31) is a threaded hole; The adjustment module (8) includes an adjustment knob (84) and a driven adjustment ring (83); The adjustment knob (84) is movably connected to the outer casing (3) and is used to rotate in response to external forces. The driven adjustment ring (83) is connected to the adjustment knob (84) and threadedly engaged with the adjustment hole (31). The driven adjustment ring (83) radially abuts against the infrared module (14). By rotating the adjustment knob (84), the driven adjustment ring (83) can be driven to move radially.

8. The thermal imager according to claim 5, characterized in that, On the outer periphery of the infrared module (14), the adjustment module (8) is provided on only one side along the same radial direction. An elastic element (15) is also provided in the housing (3) to provide a spring force to the corresponding infrared module (14) in a direction close to the adjustment module (8); and / or, The adjustment module (8) is provided on two opposite sides along the same radial direction on the outer periphery of the infrared module (14).

9. The thermal imager according to any one of claims 5 to 8, characterized in that, It also includes a ball head bracket (12) extending into the housing (3), and the infrared module (14) is fixedly connected to the ball head bracket (12); the inner circumferential surface of the housing (3) and the outer circumferential surface of the ball head bracket (12) are spherically fitted, and the adjustment module (8) abuts against the ball head bracket (12) and / or the infrared module (14).

10. The thermal imager according to claim 9, characterized in that, The inner circumferential surface of the fuselage shell (3) includes a first spherical surface (36), and the outer circumferential surface of the ball head bracket (12) includes a second spherical surface (122) that rotates with the first spherical surface (36); the center of the first spherical surface (36) and the center of the second spherical surface (122) are at the same position, and the center of the ball and the adjustment module (8) are offset in the first axial direction.

11. The thermal imager according to claim 10, characterized in that, The ball head support (12) includes a first frame (121) arranged along the first axis and located at its rear end. The ball center and the first frame (121) are arranged sequentially along the first axis. The adjustment module (8) abuts against the first frame (121).

12. The thermal imager according to claim 11, characterized in that, The adjustment module (8) includes a first adjustment module (81) and a second adjustment module (82). The first adjustment module (81) and the first frame (121) are arranged sequentially along a first radial direction. The first adjustment module (81) can move along the first radial direction to push the first frame (121). The second adjustment module (82) and the first frame (121) are arranged sequentially along a second radial direction. The second adjustment module (82) can move along the second radial direction to push the first frame (121). The first axial direction, the first radial direction, and the second radial direction are perpendicular to each other.

13. The thermal imager according to claim 9, characterized in that, The adjustment module (8) abuts against the first frame (121) on the ball head bracket (12), the first frame (121) being a ring frame that extends along a second radial direction perpendicular to the first axis; The outer casing (3) is also provided with a battery mounting port (39). The first battery module (9) is detachably installed in the ring frame through the battery mounting port (39). In a direction perpendicular to the first axis, there is a gap between the inner wall of the ring frame and the outer surface of the first battery module (9).

14. The thermal imager according to any one of claims 1 to 8, characterized in that, The housing (3) includes a main housing (32) and a front ring plate (33) located on the outer side of the front end of the main housing (32). A first pressure ring (4) is fitted on the outer side of the main housing (32). The lens module (2) is attached to the front end face of the front ring plate (33). The first pressure ring (4) is located on the rear side of the front ring plate (33) and is fixedly connected to the lens module (2). There is a radial gap between the inner circumferential surface of the first pressure ring (4) and the outer circumferential surface of the main housing (32).

15. A method for adjusting a thermal imager, characterized in that, Applied to the thermal imager according to any one of claims 1-14, comprising: Control the cursor to be positioned at the center of the display module (7); Control the lens module (2) to maintain a selected focal length; The position of the actual target (72) is determined on the display module (7), and the relative position of the infrared module (14) with the display module (7) in the radial direction is adjusted by the adjustment component so that the actual target (72) coincides with the cursor position on the display module (7).

Images