Triaxial fine tuning mechanism for thermal imaging detector

Abstract

The utility model relates to a tri-axial fine adjustment mechanism for a thermal imaging detector, belongs to the technical field of thermal imaging equipment, and solves the problem of low adjustment speed of tri-axial adjustment of the thermal imaging detector in the prior art. The tri-axial fine adjustment mechanism comprises a base, a Z-axis sliding block, an X-axis sliding block and a Y-axis sliding block which are sequentially arranged from bottom to top. A base inclined surface is arranged at one end of the base; a base convex block is arranged on the base inclined surface; the Z-axis sliding block is provided with a first sliding groove extending along the Y axis, and the first sliding groove can slide along the base protruding block. The Z-axis sliding block is provided with a second sliding groove extending along the X axis, the X-axis sliding block is provided with a first protrusion, and the first protrusion can slide along the second sliding groove. The X-axis sliding block is provided with a second protrusion, the Y-axis sliding block is provided with a third sliding groove extending along the Y axis, and the third sliding groove can slide along the second protrusion. According to the utility model, simple and rapid triaxial fine tuning of the thermal imaging detector is realized.

Description

Technical Field

[0001] This utility model relates to the field of thermal imaging equipment technology, and in particular to a three-axis fine-tuning mechanism for thermal imaging detectors. Background Technology

[0002] A thermal imaging detector is a device that converts an image of the target's temperature distribution into a visible image by detecting the target's infrared radiation and using signal processing and photoelectric conversion. A lens is connected to the front of the thermal imaging detector. To ensure clear thermal imaging, parfocality of the multi-field lens, and optical axis consistency, the thermal imaging detector needs to be finely adjusted in three axes relative to the lens to achieve optimal image quality.

[0003] In existing technologies, there are two main methods for achieving axial fine-tuning of the thermal imaging detector relative to the lens: The first method involves keeping the thermal imaging detector stationary while the lens is finely adjusted back and forth via a feed thread. This method can only achieve fine-tuning in one axis and cannot achieve fine-tuning in three axes, thus failing to meet the optical axis consistency requirements under multi-field conditions. The second method involves adjusting shims or grinding surfaces on the thermal imaging detector mounting surface to achieve three-axis fine-tuning. This method is slow, cumbersome, and complex, requiring a high level of skill from the personnel involved in the adjustment. Utility Model Content

[0004] Based on the above analysis, this utility model aims to provide a three-axis fine-tuning mechanism for thermal imaging detectors, which solves the problems of cumbersome three-axis adjustment procedures, complex operation processes, slow assembly and adjustment speeds, and high requirements for the skills of assembly and adjustment personnel in the existing technology. This allows for simple and fast three-axis fine-tuning of thermal imaging detectors, simplifies the three-axis fine-tuning procedures and operation processes, and reduces the requirements for the skills of assembly and adjustment personnel.

[0005] The objective of this utility model is mainly achieved through the following technical solutions:

[0006] A triaxial fine-tuning mechanism for a thermal imaging detector includes a base, a Z-axis slider, an X-axis slider, and a Y-axis slider arranged sequentially from bottom to top.

[0007] One end of the base is provided with a base slope, and a base protrusion is provided on the base slope;

[0008] The bottom of the Z-axis slider is provided with a first groove extending along the Y-axis, and the first groove can slide along the base protrusion; the top of the Z-axis slider is provided with a second groove extending along the X-axis, and the bottom of the X-axis slider is provided with a first protrusion, and the first protrusion can slide along the second groove.

[0009] The top of the X-axis slider is provided with a second protrusion, and the bottom of the Y-axis slider is provided with a third groove, which can slide along the second protrusion.

[0010] Furthermore, the triaxial fine-tuning mechanism also includes a first adjustment and locking assembly, a second adjustment and locking assembly, and a third adjustment and locking assembly. The first adjustment and locking assembly includes a first irregular-shaped adjusting screw and a first fastening screw. The first irregular-shaped adjusting screw can adjust the position of the Z-axis slider in the Z-axis direction, and the first fastening screw can lock the adjusted Z-axis slider on the inclined surface of the base. The second adjustment and locking assembly includes a second irregular-shaped adjusting screw and a second fastening screw. The second irregular-shaped adjusting screw can adjust the position of the X-axis slider in the X-axis direction, and the second fastening screw can lock the adjusted X-axis slider. The third adjustment and locking assembly includes a third irregular-shaped adjusting screw and a third fastening screw. The third irregular-shaped adjusting screw can adjust the position of the Y-axis slider in the Y-axis direction, and the third fastening screw can lock the adjusted Y-axis slider.

[0011] Furthermore, the first irregular-shaped adjusting screw, the second irregular-shaped adjusting screw, and the third irregular-shaped adjusting screw all include a screw head, a threaded rod, and a limiting disc. The limiting disc is sleeved on the threaded rod, and the two end faces of the limiting disc are parallel to the end face of the screw head facing the limiting disc.

[0012] Furthermore, the Z-axis slider is provided with a receiving opening that extends along the Z-axis. The first irregularly shaped adjusting screw passes through the receiving opening, and the limiting plate and the screw head of the first irregularly shaped adjusting screw hold the Z-axis slider in place. The first irregularly shaped adjusting screw moves together with the Z-axis slider. The base is provided with a first adjusting screw hole that extends along the Y-axis. As the first irregularly shaped adjusting screw is screwed into and out of the first adjusting screw hole on the base, the Z-axis slider can slide along the base protrusion to achieve upward adjustment along the Z-axis.

[0013] Furthermore, a first baffle is fixed on the Z-axis slider, and the limiting plate and the head of the second irregular-shaped adjusting screw lock the first baffle. The second irregular-shaped adjusting screw moves together with the Z-axis slider. The bottom of the X-axis slider is provided with a second adjusting screw hole extending along the X-axis direction. As the second irregular-shaped adjusting screw is screwed into and out of the second adjusting screw hole on the X-axis slider, the X-axis slider can slide along the X-axis to achieve upward adjustment in the X-axis direction. A second baffle is fixed on the Y-axis slider, and the limiting plate and the head of the third irregular-shaped adjusting screw lock the second baffle. The third irregular-shaped adjusting screw moves together with the Y-axis slider. The top of the X-axis slider is provided with a third adjusting screw hole extending along the Y-axis direction. As the third irregular-shaped adjusting screw is screwed into and out of the third adjusting screw hole on the X-axis slider, the Y-axis slider can slide along the Y-axis to achieve upward adjustment in the Y-axis direction.

[0014] Furthermore, the Z-axis slider is provided with an adjustment groove, and the base is provided with a first fastening screw hole. The first fastening screw can pass through the adjustment groove and engage with the first fastening screw hole to lock the Z-axis slider.

[0015] Furthermore, the Z-axis slider is provided with a second fastening screw hole and a first top bar. The first top bar is provided with a blind hole. The second fastening screw can pass through the second fastening screw hole and engage with the blind hole on the first top bar to lock the X-axis slider. The Y-axis slider is provided with a third fastening screw hole and a second top bar. The second top bar is provided with a blind hole. The third fastening screw can pass through the third fastening screw hole and engage with the blind hole on the second top bar to lock the Y-axis slider.

[0016] Furthermore, the second and third slides are dovetail slides; the cross-sections of the first and second protrusions are dovetail-shaped.

[0017] Furthermore, the base is provided with a plurality of weight-reducing holes, one of which is provided on the base protrusion.

[0018] Furthermore, the X-axis slider has an X-axis slider weight reduction hole; the Y-axis slider has a Y-axis slider weight reduction hole.

[0019] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0020] 1. The triaxial fine-tuning mechanism for thermal imaging detectors of this utility model adopts a base protrusion on the inclined surface of the base, a first sliding groove extending along the Y-axis at the bottom of the Z-axis slider, which can slide along the base protrusion; a second sliding groove extending along the X-axis at the top of the Z-axis slider, a first protrusion at the bottom of the X-axis slider, which can slide along the second sliding groove; a second protrusion at the top of the X-axis slider, and a third sliding groove at the bottom of the Y-axis slider, which can slide along the second protrusion. This structure enables simple and quick triaxial fine-tuning of the thermal imaging detector, simplifies the process and operation of triaxial fine-tuning of the thermal imaging detector, and reduces the skill requirements for the assembly and adjustment personnel.

[0021] 2. The triaxial fine-tuning mechanism for thermal imaging detectors of this utility model does not require a sliding groove extending along the Z-axis direction, nor does it require an adjustment and locking component in the Z-axis direction, which helps to reduce the overall height of the triaxial fine-tuning mechanism.

[0022] 3. The first adjustment and locking component of the triaxial fine-tuning mechanism for thermal imaging detectors of this utility model avoids the bottom base and the top thermal imaging detector, which helps to prevent the base and thermal imaging detector from blocking the first adjustment and locking component and prevents the base and thermal imaging detector from hindering the fine-tuning of the first adjustment and locking component.

[0023] 4. The triaxial fine-tuning mechanism for thermal imaging detectors of this utility model has higher precision because the Z-axis fine-tuning is performed through an inclined plane. The Z-axis displacement is the Z-axis component of the displacement of the first irregular adjustment screw. Compared with the displacement length of the first irregular adjustment screw (i.e., the Z-axis displacement is smaller when the first irregular adjustment screw is turned one turn), the fine-tuning is more precise.

[0024] 5. The triaxial fine-tuning mechanism for thermal imaging detectors of this utility model uses the head of the first irregular-shaped adjusting screw and the limiting plate to hold the Z-axis slider, realizing the movement of the Z-axis slider and the first irregular-shaped adjusting screw together in the Y-axis. Compared with the complex fixed structure, it reduces the weight of the triaxial fine-tuning mechanism, which is conducive to reducing maintenance and repair and improving the service life of the mechanism.

[0025] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing this invention. The objectives and other advantages of this invention can be realized and obtained from the details specifically pointed out in the text and accompanying drawings. Attached Figure Description

[0026] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0027] Figure 1 A schematic diagram of a three-axis fine-tuning mechanism equipped with a thermal imaging detector;

[0028] Figure 2 An exploded view of a three-axis fine-tuning mechanism;

[0029] Figure 3 This is a top view of the Z-axis slider.

[0030] Figure 4 This is a bottom view of the Z-axis slider structure.

[0031] Figure 5 This is a structural diagram of the Z-axis slider before it is assembled with the inclined surface of the base;

[0032] Figure 6 This is a schematic diagram of the structure after the Z-axis slider and the inclined surface of the base are assembled.

[0033] Figure 7 This is a schematic diagram of the X-axis slider.

[0034] Figure 8 This is a schematic diagram of the assembly of the X-axis slider and the third adjusting and locking assembly;

[0035] Figure 9 This is a schematic diagram of the Y-axis slider.

[0036] Figure label:

[0037] 1-Thermal imaging detector; 2-Lens;

[0038] 3-Base; 301-Base inclined surface; 302-Base protrusion; 303-First fastening screw hole; 304-First adjusting screw hole;

[0039] 4-Z-axis slider; 401-First adjusting and locking assembly; 4011-Accommodating opening; 4012-First irregular-shaped adjusting screw; 4013-Adjusting groove; 4014-First fastening screw; 402-First slide groove; 403-Second adjusting and locking assembly; 4031-First baffle; 4032-Second irregular-shaped adjusting screw; 4033-First baffle fixing screw; 4034-Second fastening screw; 4035-First top bar; 4036-First baffle fixing screw hole; 4037-Second fastening screw hole; 404-Second slide groove;

[0040] 5 - X-axis slider; 501 - First protrusion; 502 - Second adjusting screw hole; 503 - Second protrusion; 504 - Third adjusting screw hole; 505 - X-axis slider weight reduction hole;

[0041] 6-Y-axis slider; 601-Third slide groove; 602-Third adjusting and locking assembly; 6021-Second baffle; 6022-Third irregular-shaped adjusting screw; 6023-Second baffle fixing screw; 6024-Third fastening screw; 6025-Second top bar; 6026-Second baffle fixing screw hole; 603-Y-axis slider weight reduction hole; 604-Detector mounting hole. Detailed Implementation

[0042] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0043] A specific embodiment of this utility model is as follows: Figure 1 As shown, a three-axis fine-tuning mechanism for a thermal imaging detector is disclosed, including a base 3, a Z-axis slider 4, an X-axis slider 5, and a Y-axis slider 6. A thermal imaging detector 1 is mounted on top of the Y-axis slider 6, and a lens 2 is connected to the front end of the thermal imaging detector 1. To better illustrate this invention, the following methods are used... Figure 2 The coordinate system shown includes mutually perpendicular X, Y, and Z axes. For example... Figure 1 As shown, the base 3, Z-axis slider 4, X-axis slider 5, Y-axis slider 6 and thermal imaging detector 1 are arranged sequentially along the positive Z-axis direction.

[0044] like Figure 5 As shown, the base 3 includes a base inclined surface 301 and a base protrusion 302. The base inclined surface 301 is located at one end of the base 3 and is inclined in the negative Z-axis direction (i.e., inclined downward). The base protrusion 302 is provided on the base inclined surface 301.

[0045] Preferably, such as Figure 5 As shown, the base 3 is provided with multiple weight reduction holes, one of which is located on the base protrusion 302.

[0046] like Figures 2 to 6As shown, the Z-axis slider 4 includes a first slide groove 402, a first adjusting and locking assembly 401, a second slide groove 404, and a second adjusting and locking assembly 403. The bottom surface of the Z-axis slider 4 is an inclined surface. The first slide groove 402 extends along the Y-axis. The first adjusting and locking assembly 401 includes a receiving opening 4011, a first irregularly shaped adjusting screw 4012, and a first fastening screw 4014. The first irregularly shaped adjusting screw 4012 is disposed along the Y-axis. The second slide groove 404 extends along the X-axis. The second adjusting and locking assembly 403 includes a second irregularly shaped adjusting screw 4032 and a second fastening screw 4034. The second irregularly shaped adjusting screw 4032 is disposed along the X-axis.

[0047] The receiving opening 4011 extends along the Z-axis direction, providing space for the first irregular adjusting screw 4012 to move relative to the Z-axis slider 4 in the Z-axis direction.

[0048] The first irregular-shaped adjusting screw 4012 includes a screw head, a threaded rod, and a limiting disc (not shown in the figure). The limiting disc is sleeved on the threaded rod, and the two end faces of the limiting disc are parallel to the end face of the screw head facing the limiting disc. The structure of the second irregular-shaped adjusting screw 4032 is the same as that of the first irregular-shaped adjusting screw 4012.

[0049] The second adjusting and locking assembly 403 also includes a first baffle 4031, a first baffle fixing screw 4033, and a first baffle fixing screw hole 4036. The first baffle fixing screw 4033 passes through the first baffle 4031 and is threaded into the first baffle fixing screw hole 4036 to fix the first baffle 4031 to one end of the Z-axis slider 4.

[0050] like Figure 7 and Figure 8 As shown, the X-axis slider 5 includes a first protrusion 501, a second adjusting screw hole 502, a second protrusion 503, and a third adjusting screw hole 504. The first protrusion 501 and the second adjusting screw hole 502 extend along the X-axis and are located at the bottom of the X-axis slider 5, while the second protrusion 503 and the third adjusting screw hole 504 extend along the Y-axis and are located at the top of the X-axis slider 5. Preferably, the X-axis slider 5 further includes an X-axis slider weight reduction hole 505.

[0051] like Figure 9 As shown, the Y-axis slider 6 includes a third slide groove 601, a third adjusting and locking assembly 602, and a detector mounting hole 604. The third slide groove 601 is located at the bottom of the Y-axis slider 6 and extends along the Y-axis. The third adjusting and locking assembly 602 includes a third irregularly shaped adjusting screw 6022 and a third fastening screw 6024. The third irregularly shaped adjusting screw 6022 extends along the Y-axis. The structure of the third irregularly shaped adjusting screw 6022 is the same as that of the first irregularly shaped adjusting screw 4012.

[0052] Furthermore, the third adjusting and locking assembly 602 also includes a second baffle 6021, a second baffle fixing screw 6023, and a second baffle fixing screw hole 6026. The second baffle fixing screw 6023 passes through the second baffle 6021 and engages with the second baffle fixing screw hole 6026 to fix the second baffle 6021 to one end of the Y-axis slider 6.

[0053] Preferably, the Y-axis slider 6 further includes a Y-axis slider weight reduction hole 603.

[0054] The Z-axis slider 4 and the base 3 are coupled through the following structure.

[0055] The first slide groove 402 can slide along the base protrusion 302. The sliding of the first slide groove 402 is controlled by the first irregular adjusting screw 4012, that is, the first irregular adjusting screw 4012 can adjust the position of the Z-axis slider 4 in the Z-axis direction. Specifically, the base 3 is also provided with a first adjusting screw hole 304, and the first irregular adjusting screw 4012 passes through the receiving opening 4011 and is threaded into the first adjusting screw hole 304. The Z-axis slider 4 is locked between the limiting plate and the head of the first irregular adjusting screw 4012 by the receiving opening 4011 (that is, the first irregular adjusting screw 4012 passes through the receiving opening 4011, and the limiting plate and the head of the first irregular adjusting screw 4012 lock the Z-axis slider 4), and the Z-axis slider 4 can move along the Y-axis together with the first irregular adjusting screw 4012. As the first irregular-shaped adjusting screw 4012 is screwed into and out of the first adjusting screw hole 304, the Z-axis slider 4 can slide along the base protrusion 302 to achieve fine adjustment in the Z-axis direction (accompanied by movement in the Y-axis direction).

[0056] The first irregular-shaped adjusting screw 4012 uses threads to achieve fine adjustment in the Z-axis, which can achieve simple and quick fine adjustment of the thermal imaging detector 1 in the Z-axis. Compared with the repair and grinding of the plane, it simplifies the fine adjustment procedure and operation of the thermal imaging detector 1 and reduces the requirements for the quality of the assembly and adjustment personnel.

[0057] By using the head of the first irregular-shaped adjusting screw 4012 and the limiting plate to hold the Z-axis slider 4, the Z-axis slider 4 and the first irregular-shaped adjusting screw 4012 can move together in the Y-axis. Compared with the complex fixed structure, this reduces the weight of the three-axis fine adjustment mechanism, which is beneficial to reducing maintenance and repair and improving the service life of the mechanism.

[0058] The first fastening screw 4014 can lock the fine-tuned Z-axis slider 4 onto the inclined surface 301 of the base. Specifically, the base 3 also has a first fastening screw hole 303. The Z-axis slider 4 has an adjustment groove 4013. The first fastening screw 4014 can pass through the adjustment groove 4013 and engage with the first fastening screw hole 303, thereby locking the first fastening screw 4014 and subsequently locking the Z-axis slider 4. The adjustment groove 4013 extends in the Y-axis direction to accommodate the fine-tuned Z-axis slider 4 and provide a larger adjustment range. For each first fastening screw 4014, the base 3 is provided with two first fastening screw holes 303, which are spaced apart in the Y-axis direction, thereby providing a larger adjustment range for the Z-axis slider 4 during fine-tuning.

[0059] In this embodiment, the Z-axis fine-tuning structure uses a base protrusion 302 on the inclined surface 301 of the base to engage with the first groove 402 at the bottom of the Z-axis slider 4. Fine-tuning of the Z-axis slider 4 is achieved by adjusting the first irregularly shaped adjusting screw 4012 extending along the Y-axis. This eliminates the need for a groove extending along the Z-axis in the three-axis fine-tuning mechanism, and also eliminates the need for an adjusting locking assembly in the Z-axis direction, thus reducing the overall height of the three-axis fine-tuning mechanism. The first irregularly shaped adjusting screw 4012 of the first adjusting locking assembly 401 extends along the Y-axis, allowing the first adjusting locking assembly 401 to avoid obstruction from the base 3 at the bottom and the thermal imaging detector 1 at the top. This prevents the base 3 and the thermal imaging detector 1 from hindering the fine-tuning of the first adjusting locking assembly 401. Meanwhile, since the Z-axis fine adjustment is performed through an inclined plane, the Z-axis displacement is the Z-axis component of the displacement of the first irregular adjusting screw 4012. Compared with the displacement length of the first irregular adjusting screw 4012 (that is, the Z-axis displacement is smaller when the first irregular adjusting screw 4012 is turned one turn), the fine adjustment accuracy is higher.

[0060] The cooperation between the X-axis slider 5 and the Z-axis slider 4 is achieved through the following structure.

[0061] The second groove 404 engages with the first protrusion 501, allowing the X-axis slider 5 to slide relative to the Z-axis slider 4 along the positive and negative X-axis directions. Specifically, as shown... Figure 3 As shown, the second groove 404 is a dovetail groove, and the cross-section of the first protrusion 501 is dovetail-shaped. Optionally, the second groove 404 can also be a triangular or rectangular groove, and correspondingly, the cross-section of the first protrusion 501 can be triangular or rectangular. Compared with triangular or rectangular grooves, the dovetail groove has better resistance to lateral forces and superior load-bearing capacity, while reducing unnecessary movement or gaps, thereby achieving precise positioning between the second groove 404 and the first protrusion 501, and realizing precise fine-tuning in the X-axis direction.

[0062] The sliding of the X-axis slider 5 relative to the Z-axis slider 4 is controlled by the second irregular-shaped adjusting screw 4032, that is, the second irregular-shaped adjusting screw 4032 can adjust the position of the X-axis slider 5 in the X-axis direction. The second irregular-shaped adjusting screw 4032 passes through the first baffle 4031 and is threaded into the second adjusting screw hole 502. The second irregular-shaped adjusting screw 4032 uses its limiting plate and screw head to hold the first baffle 4031, and the second irregular-shaped adjusting screw 4032 moves together with the Z-axis slider 4 in the X-axis direction. As the second irregular-shaped adjusting screw 4032 is screwed into and out of the second adjusting screw hole 502, the first protrusion 501 can slide along the second slide groove 404 to achieve fine adjustment in the X-axis direction.

[0063] The second fastening screw 4034 can lock the fine-tuned X-axis slider 4. The Z-axis slider 4 is also provided with a first top bar 4035 and a second fastening screw hole 4037. The second fastening screw 4034 passes through the second fastening screw hole 4037 and engages with the blind thread of the first top bar 4035 to lock the X-axis slider 5. The first top bar 4035 is fixed to the side wall of the second slide groove 404. The first top bar 4035 directly bears the pressure of the second fastening screw 4034, avoiding direct pressure from the second fastening screw 4034 against the first protrusion 501. This converts the point contact between the second fastening screw 4034 and the first protrusion 501 into a surface contact between the first top bar 4035 and the first protrusion 501, effectively reducing stress and protecting the first protrusion 501. This helps ensure the accuracy of X-axis fine-tuning and extends the service life of the triaxial fine-tuning mechanism.

[0064] The cooperation between the Y-axis slider 6 and the X-axis slider 5 is achieved through the following structure.

[0065] The second protrusion 503 engages with the third slide groove 601 in a manner similar to that of the second slide groove 404 and the first protrusion 501. The Y-axis slider 6 can slide relative to the X-axis slider 5 along the positive and negative Y-axis directions. Specifically, the third slide groove 601 is a dovetail slide groove, and the cross-section of the second protrusion 503 is dovetail-shaped. Optionally, the third slide groove 601 can also be a triangular or rectangular slide groove, and correspondingly, the cross-section of the second protrusion 503 can be triangular or rectangular. Compared to triangular or rectangular slide grooves, the dovetail slide groove has better resistance to lateral forces and superior load-bearing capacity, while reducing unnecessary movement or gaps, thereby achieving precise positioning between the third slide groove 601 and the second protrusion 503, and enabling precise micro-adjustment along the Y-axis.

[0066] The sliding of the Y-axis slider 6 relative to the X-axis slider 5 is controlled by the third irregular-shaped adjusting screw 6022, that is, the third irregular-shaped adjusting screw 6022 can adjust the position of the Y-axis slider 6 in the Y-axis direction. The third irregular-shaped adjusting screw 6022 passes through the second baffle 6021 and is threaded into the third adjusting screw hole 504. The third irregular-shaped adjusting screw 6022 uses its limiting plate and screw head to hold the second baffle 6021, and the third irregular-shaped adjusting screw 6022 and the Y-axis slider 6 move together in the Y-axis direction. As the third irregular-shaped adjusting screw 6022 is screwed in and out of the third adjusting screw hole 504, the third slide groove 601 can slide along the second protrusion 503 to achieve fine adjustment in the Y-axis direction.

[0067] The third fastening screw 6024 locks the fine-tuned Y-axis slider 6. The Y-axis slider 6 also has a second top bar 6025 and a third fastening screw hole. The third fastening screw 6024 passes through the third fastening screw hole and engages with the blind thread of the second top bar 6025 to lock the Y-axis slider 6. The second top bar 6025 is fixed to the side wall of the third slide groove 601. The second top bar 6025 directly bears the pressure of the third fastening screw 6024, avoiding direct pressure from the third fastening screw 6024 against the second protrusion 503. This converts the point contact between the third fastening screw 6024 and the second protrusion 503 into a surface contact between the second top bar 6025 and the second protrusion 503, effectively reducing stress and protecting the second protrusion 503. This, in turn, helps ensure the accuracy of the Y-axis fine-tuning and extends the service life of the triaxial fine-tuning mechanism.

[0068] The thermal imaging detector 1 cooperates with the Y-axis slider 6, that is, the thermal imaging detector 1 is fixed to the top of the Y-axis slider 6 of the triaxial fine adjustment mechanism through the detector mounting hole 604.

[0069] In practice, turning the first irregular-shaped adjusting screw 4012 allows for fine-tuning along the Z-axis (accompanied by movement along the Y-axis), and tightening the first fastening screw 4014 locks the finely adjusted Z-axis slider 4 onto the inclined surface 301 of the base. Turning the second irregular-shaped adjusting screw 4032 allows for fine-tuning along the X-axis, and tightening the second fastening screw 4034 locks the finely adjusted X-axis slider 5. Turning the third irregular-shaped adjusting screw 6022 allows for fine-tuning along the Y-axis, and tightening the third fastening screw 6024 locks the finely adjusted Y-axis slider 6.

[0070] The triaxial fine-tuning mechanism for thermal imaging detectors of this invention enables simple and rapid triaxial fine-tuning of thermal imaging detectors, simplifies the process and operation of triaxial fine-tuning of thermal imaging detectors, and reduces the skill requirements of the assembly and adjustment personnel.

[0071] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A three-axis fine adjustment mechanism for a thermal imaging detector, characterized in that, The base, the Z-axis slider, the X-axis slider and the Y-axis slider are sequentially arranged from bottom to top. One end of the base is provided with a base inclined surface, and the base inclined surface is provided with a base protrusion. The bottom of the Z-axis slider is provided with a first sliding groove extending along the Y-axis, and the first sliding groove can slide along the base protrusion; the top of the Z-axis slider is provided with a second sliding groove extending along the X-axis, and the bottom of the X-axis slider is provided with a first protrusion which can slide along the second sliding groove. The top of the X-axis slider is provided with a second protrusion, and the bottom of the Y-axis slider is provided with a third sliding groove extending along the Y-axis, and the third sliding groove can slide along the second protrusion.

2. The three-axis fine adjustment mechanism for a thermal imaging detector according to claim 1, characterized in that, Further comprising a first adjusting and locking assembly, a second adjusting and locking assembly and a third adjusting and locking assembly. The first adjusting and locking assembly comprises a first special-shaped adjusting screw and a first fastening screw, the first special-shaped adjusting screw can adjust the position of the Z-axis slider in the Z-axis direction, and the first fastening screw can lock the adjusted Z-axis slider on the base inclined surface; The second adjusting and locking assembly comprises a second special-shaped adjusting screw and a second fastening screw, the second special-shaped adjusting screw can adjust the position of the X-axis slider in the X-axis direction, and the second fastening screw can lock the adjusted X-axis slider; The third adjusting and locking assembly comprises a third special-shaped adjusting screw and a third fastening screw, the third special-shaped adjusting screw can adjust the position of the Y-axis slider in the Y-axis direction, and the third fastening screw can lock the adjusted Y-axis slider.

3. The three-axis fine adjustment mechanism for a thermal imaging detector according to claim 2, characterized in that, The first special-shaped adjusting screw, the second special-shaped adjusting screw and the third special-shaped adjusting screw all comprise a nail head, a threaded rod and a limiting disc, the limiting disc is sleeved on the threaded rod, and the two end faces of the limiting disc are parallel to the end face of the nail head facing the limiting disc.

4. The three-axis fine adjustment mechanism for a thermal imaging detector according to claim 3, wherein The Z-axis slider is provided with a containing opening extending along the Z-axis, the first special-shaped adjusting screw passes through the containing opening, the limiting disc and the nail head of the first special-shaped adjusting screw are clamped on the Z-axis slider, and the first special-shaped adjusting screw moves together with the Z-axis slider; the base is provided with a first adjusting screw hole extending along the Y-axis, and the Z-axis slider can slide along the base protrusion to realize the adjustment in the Z-axis direction by screwing the first special-shaped adjusting screw into and out of the first adjusting screw hole on the base.

5. The three-axis fine adjustment mechanism for a thermal imaging detector according to claim 3, wherein The Z-axis slider is fixed with a first baffle, the limiting disc and the nail head of the second special-shaped adjusting screw are clamped on the first baffle, and the second special-shaped adjusting screw moves together with the Z-axis slider; the bottom of the X-axis slider is provided with a second adjusting screw hole extending along the X-axis direction, and the X-axis slider can slide along the X-axis to realize the adjustment in the X-axis direction by screwing the second special-shaped adjusting screw into and out of the second adjusting screw hole on the X-axis slider. The Y-axis slider is fixed with a second baffle, the limiting disc and the nail head of the third special-shaped adjusting screw are clamped with the second baffle, and the third special-shaped adjusting screw moves together with the Y-axis slider; The top of the X-axis slider is provided with a third adjusting screw hole extending along the Y-axis direction, and the Y-axis slider can slide along the Y-axis and realize the adjustment of the Y-axis upward, with the third special-shaped adjusting screw screwed into and out of the third adjusting screw hole on the X-axis slider.

6. The three-axis fine adjustment mechanism for thermal imaging detectors according to claim 2, wherein, The Z-axis slider is provided with an adjusting groove, and the base is provided with a first fastening screw hole, and the first fastening screw can be screwed into the adjusting groove and the first fastening screw hole to lock the Z-axis slider.

7. The three-axis fine adjustment mechanism for thermal imaging detectors according to claim 2, wherein, The Z-axis slider is provided with a second fastening screw hole and a first top strip, the first top strip is provided with a blind hole, and the second fastening screw can be screwed into the second fastening screw hole and the blind hole in the first top strip to lock the X-axis slider; The Y-axis slider is provided with a third fastening screw hole and a second top strip, the second top strip is provided with a blind hole, and the third fastening screw can be screwed into the third fastening screw hole and the blind hole in the second top strip to lock the Y-axis slider.

8. The three-axis fine adjustment mechanism for a thermal imaging detector according to claim 1, characterized in that, The second sliding groove and the third sliding groove are dovetail sliding grooves; the cross section of the first protrusion and the second protrusion is dovetail-shaped.

9. The three-axis fine adjustment mechanism for a thermal imaging detector according to claim 1, characterized in that, The base is provided with a plurality of lightening holes, wherein one of the lightening holes is arranged on the base protrusion.

10. The three-axis fine adjustment mechanism for a thermal imaging detector according to claim 1, characterized in that, The X-axis slider is provided with an X-axis slider lightening hole; and the Y-axis slider is provided with a Y-axis slider lightening hole.

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