An imaging device and a ballistic calculation method

Abstract

The application discloses an imaging device and a ballistic calculation method, and relates to the technical field of imaging. The imaging device comprises a lens module, a rotating part in transmission connection with a continuous zoom lens assembly, and a detection assembly. When the rotating part rotates, the rotating part can drive the lens in the continuous zoom lens assembly to move axially to realize zooming. The detection assembly is used for detecting the position of the continuous zoom lens assembly or the rotating part to determine the current lens focal length value of the lens module. In the continuous focusing process, the detection assembly can detect the position of the moved continuous zoom lens assembly and / or the rotating part to directly identify the focal length of the current lens module, which provides a basis for subsequent device adjustment and compensation aiming problems, and improves the problems caused by large aiming deviation of the continuous zooming.

Description

Technical Field

[0001] This invention relates to the field of imaging technology, and in particular to an imaging device and a ballistic calculation method. Background Technology

[0002] Currently, most rifle sights on the market are single-focal-length, lacking continuous zoom (i.e., multiple focal lengths) sights, especially infrared sights with continuous zoom. This is because the point of impact will deviate when aiming at a target with lenses of different focal lengths, requiring users to calibrate the impact point based on experience or software. If a continuous zoom lens is used, the inability to accurately know the lens's focal length during use can lead to significant aiming deviations, affecting the application of the continuous zoom function.

[0003] Therefore, how to improve the large aiming deviation caused by continuous zoom and enable the effective application of continuous zoom products is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an imaging device and a ballistic calculation method that can improve the problem of large aiming deviation caused by continuous zoom.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The present invention provides an imaging device, comprising: a lens module, including a continuous zoom lens assembly and a rotating component pulsatingly connected to the continuous zoom lens assembly, wherein the rotating component, when rotated, can drive the lens in the continuous zoom lens assembly to move axially to achieve zoom; and a detection component, used to detect the position of the continuous zoom lens assembly or the rotating component to determine the current lens focal length value of the lens module.

[0007] In one exemplary embodiment, the detection component includes an angle detection component for detecting the angle of rotation of the rotating member to determine the current focal length value of the lens module based on the angle; or, the detection component includes a potential detection component for detecting the potential value generated by the rotation of the rotating member to determine the current focal length value of the lens module based on the potential value; or, the detection component includes a distance detection component for detecting the axial movement distance of a selected lens in the continuous zoom lens assembly to determine the current focal length value of the lens module based on the axial movement distance.

[0008] In one exemplary embodiment, the potential detection component includes: a potentiometer connected to the rotating component for detecting the potential value generated when the rotating component rotates; and a first circuit board electrically connected to the potentiometer, wherein the first circuit board is used to determine the current lens focal length value of the lens module based on the potential value detected by the potentiometer.

[0009] In one exemplary embodiment, the rotating component is provided with an arc-shaped drive groove extending circumferentially, and the potentiometer knob of the potentiometer extends axially into the arc-shaped drive groove. Multiple protrusions are arranged sequentially along the circumferential direction on the groove wall of the arc-shaped drive groove. When the rotating component rotates, the potentiometer knob can be pushed to rotate sequentially by each of the protrusions, thereby changing the potential value of the potentiometer.

[0010] In one exemplary embodiment, the device further includes a movement module and a body housing; the movement module is fixed to the rear end of the lens module; the potential detection component is fixedly connected to the side of the movement module; the lens module is fixed to the front of the body housing, and the movement module is built into the body housing; the front end of the body housing has a mounting port, the potentiometer is connected to the rotating component through the mounting port, and the movement module is connected to the lens module through the mounting port.

[0011] In one exemplary embodiment, the first circuit board is fixedly connected to the side of the movement module, and the potentiometer is plugged in to be electrically connected to the first circuit board.

[0012] In one exemplary embodiment, the lens module further includes a main lens barrel, and the continuous zoom lens assembly includes a zoom lens group disposed within the main lens barrel; the rotating component includes a zoom lens group guide tube, which is rotatably sleeved on the outside of the main lens barrel and can drive the lens in the zoom lens group to move axially via a first guide groove on the main lens barrel.

[0013] In one exemplary embodiment, the lens module further includes a focusing lens group; a fixed lens assembly is fixedly provided inside the main lens barrel, the fixed lens assembly includes a fixed lens barrel and a fixed lens group disposed in the fixed lens barrel, the focusing lens group is disposed in the fixed lens barrel and located behind the fixed lens group; the rotating component further includes a focusing lens group guide tube, the focusing lens group guide tube and the zoom lens group guide tube are fixedly connected, the focusing lens group guide tube is sleeved on the outside of the fixed lens barrel, and can drive the lens in the focusing lens group to move axially via a second guide groove on the fixed lens barrel.

[0014] In one exemplary embodiment, the device further includes a housing with a display module fixed inside; 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 the axial direction; and 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.

[0015] Another aspect of the present invention provides a ballistic calculation method, comprising: after adjusting the lens focal length of the imaging device by means of a rotating component, obtaining the position detection value of the current continuous zoom lens assembly or the rotating component based on a detection component; calculating the current lens focal length value based on the position detection value and the relationship between the position detection value and the lens focal length value; and performing ballistic calculation based on the lens focal length value and preset ballistic influence parameters.

[0016] The imaging device provided by the present invention includes: a lens module, including a continuous zoom lens assembly and a rotating component that is hygienically connected to the continuous zoom lens assembly, wherein the rotating component can drive the lens in the continuous zoom lens assembly to move axially to achieve zoom when it rotates; and a detection component for detecting the position of the continuous zoom lens assembly or the rotating component to determine the current lens focal length value of the lens module.

[0017] Since the structure of the continuous zoom lens assembly and rotating components is fixed, the relationship between the lens focal length and the angles of the continuous zoom lens assembly and rotating components is also fixed and can be predetermined and stored based on structural constraints. Therefore, during continuous focusing, the position of the moved continuous zoom lens assembly and / or rotating components can be detected by a detection component, directly identifying the current focal length of the lens module. This provides a basis for subsequent equipment adjustments and compensation for aiming issues, improving the problem of large aiming deviations caused by continuous zoom. Attached Figure Description

[0018] 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.

[0019] Figure 1 An external view of the imaging device provided in a specific embodiment of the present invention;

[0020] Figure 2 This is an axial sectional view of the imaging device provided in a specific embodiment of the present invention;

[0021] Figure 3 for Figure 2 AA cross-section view;

[0022] Figure 4 This is an axial sectional view of the imaging device provided in a specific embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the connection between the movement module and the lens module in a specific embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the mechanism module and potentiometer connection portion provided in a specific embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the lens module and potentiometer connection portion provided in a specific embodiment of the present invention;

[0026] Figure 8 A schematic diagram of the arc-shaped drive groove provided in a specific embodiment of the present invention;

[0027] Figure 9 An axonometric view of the zoom lens group guide tube and its connecting structure according to a specific embodiment of the present invention;

[0028] Figure 10 A side view of the zoom lens group guide tube and its connecting structure according to a specific embodiment of the present invention;

[0029] Figure 11 This is an axonometric view of the main lens barrel and its connecting structure according to a specific embodiment of the present invention;

[0030] Figure 12 A side view of the main lens barrel and its connecting structure according to a specific embodiment of the present invention;

[0031] Figure 13 A side view of the zoom lens assembly and its connecting structure according to a specific embodiment of the present invention;

[0032] Figure 14 A side view of the focusing lens assembly guide tube and its connecting structure provided in a specific embodiment of the present invention;

[0033] Figure 15 Assembly diagram of the adjustment component, lens module, and movement module provided in specific embodiments of the present invention;

[0034] Figure 16 This is a side view of the area near the pressure ring in a specific embodiment of the present invention;

[0035] Figure 17 This is a partial isometric view of the front end of the fuselage shell according to a specific embodiment of the present invention;

[0036] Figure 18 This is a partial structural diagram of the front end of the fuselage shell according to a specific embodiment of the present invention;

[0037] Figure 19 A comparison diagram showing the positional changes of the actual target on the display module in a specific embodiment of the present invention;

[0038] Figure 20 A graph showing the relationship between the lens focal length and the angle of the rotating component;

[0039] Figure 21 An external view of another imaging device provided in a specific embodiment of the present invention;

[0040] Figure 22 for Figure 21 A cross-sectional view perpendicular to the first axis X;

[0041] Figure 23 This is a magnified view of a portion of the ball joint bracket that mates with the spherical surface of the fuselage.

[0042] Figure 24 This is an assembly diagram of the ball head bracket and elastic element according to a specific embodiment of the present invention;

[0043] Figure 25 This is a structural diagram of the ball head bracket according to a specific embodiment of the present invention.

[0044] Figure label:

[0045] Eyepiece 1;

[0046] Lens module 2, lens base 21, continuous zoom lens assembly 22, zoom lens group 221, focusing lens group 222, main lens barrel 23, first guide groove 231, rotating part 24, zoom lens group guide tube 241, zoom guide groove 2411, focusing lens group guide tube 242, focusing guide groove 2421, handwheel 243, arc-shaped drive groove 25, protrusion 26, fixed lens assembly 27, fixed lens barrel 271, fixed lens group 272, second guide groove 273, zoom guide pin 28, focusing guide pin 29;

[0047] 3. Body shell, 31. Adjustment hole, 32. Main shell, 33. Front ring plate, 34. Mounting port, 35. Fixing cylinder, 36. First spherical surface, 39. Battery mounting port, 310. Battery cover, 310. Second pressure ring, 311. Limiting spherical ring, 312.

[0048] First pressure ring 4, clearance groove 41;

[0049] Movement module 5, movement bracket 51, movement 52, side plate 53, positioning plane 54;

[0050] First fastener 6;

[0051] Display module 7, crosshair cursor 71, actual target 72;

[0052] Adjustment module 8, first adjustment module 81, second adjustment module 82, driven adjustment ring 83, adjustment knob 84, rotating wheel 841, limit ring 842, and rotating cap 843;

[0053] Detection component 9, potentiometer 91, potentiometer knob 911, first circuit board 92;

[0054] Control module 10;

[0055] First battery module 11;

[0056] Ball head support 12, first frame 121, second spherical surface 122, second frame 123, third frame 124;

[0057] Infrared module 14;

[0058] Elastic element 15;

[0059] Distance measuring module 16. Detailed Implementation

[0060] 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.

[0061] The core of this invention is to provide an imaging device and a ballistic calculation method, which can be applied to continuous zoom imaging devices to accurately obtain the current lens focal length value of the imaging device and improve the problem of large aiming deviation caused by continuous zoom.

[0062] For a specific embodiment of the imaging device provided by this invention, please refer to [the specific embodiment]. Figures 1 to 20 It includes: lens module 2 and detection component 9.

[0063] like Figure 4 As shown, lens module 2 includes a continuous zoom lens assembly 22 and a rotating component 24 that is pulsatorically connected to the continuous zoom lens assembly 22. When the rotating component 24 rotates, it drives the lens elements in the continuous zoom lens assembly 22 to move axially, thereby achieving zoom. The continuous zoom lens assembly 22 can continuously zoom; continuous zoom means that the lens focal length can be continuously changed. The continuous zoom lens assembly 22 smoothly and uninterruptedly adjusts the lens focal length mechanically. The rotating component 24 is typically in the form of a handwheel for convenient user operation.

[0064] The detection component 9 is used to detect the position of the rotating member 24 to determine the current lens focal length value of the lens module 2. In other embodiments, the detection component 9 can also determine the current lens focal length value of the lens module 2 by detecting the position of the continuous zoom lens assembly 22.

[0065] Since the structures of the continuous zoom lens assembly 22 and the rotating component 24 are fixed, the relationship between the lens focal length and the position of the continuous zoom lens assembly 22 or the rotating component 24 is also fixed and can be predetermined and stored based on structural constraints. Therefore, during continuous focusing, the detection component 9 can perform hardware position detection on the moved continuous zoom lens assembly 22 and / or rotating component 24, directly identifying the current focal length of the lens module 2. This provides a basis for subsequent equipment adjustment and compensation of aiming issues, improving the problem of large aiming deviations caused by continuous zoom.

[0066] The imaging device can specifically be a thermal imager.

[0067] In some embodiments, the detection component 9 includes an angle detection component for detecting the angle of rotation of the rotating member 24, so as to determine the current lens focal length value of the lens module 2 based on the angle. Here, the angle of rotation refers to the angle value by which the rotating member 24 rotates relative to a preset initial angle. Typically, there is a corresponding relationship between the angle value of the rotating member 24 and the lens focal length value, for example… Figure 20 As shown, the angle value of the rotating component 24 is positively correlated with the lens focal length value. Therefore, the corresponding lens focal length value can be obtained based on the angle value obtained by the detection component 9. In application, the correspondence between the angle value of the rotating component 24 and the lens focal length value can be pre-stored in the controller. When the controller receives the detection value from the detection component 9, it retrieves the lens focal length value according to the pre-stored correspondence.

[0068] For example, the angle detection component can be a device that directly detects the angle and is directly connected to the rotating part 24 to obtain the current angle value of the rotating part 24. For example, the angle detection component is a rotary encoder and is directly connected to the inner or outer circumferential surface of the rotating part 24; or, the angle detection component can be other angle sensors such as a Hall sensor.

[0069] In other embodiments, the detection component 9 is a potential detection component, used to detect the potential value generated by the rotation of the rotating component 24, so as to determine the current lens focal length value of the lens module 2 based on the potential value. Figures 4 to 7As shown, the potential detection assembly includes a potentiometer 91 and a first circuit board 92. The potentiometer 91 has advantages such as simple structure, easy assembly, and low cost. The potentiometer 91 is connected to the rotating component 24 and electrically connected to the first circuit board 92. The potentiometer 91 is used to detect the potential value generated by the rotation of the rotating component 24. The first circuit board 92 is used to determine the lens focal length value based on the potential value detected by the potentiometer 91. The first circuit board 92 can be connected to the camera module circuit board via a ribbon cable.

[0070] There is a corresponding relationship between the angle of the rotating component 24 and the focal length of the lens, for example... Figure 20 As shown, the angle of the rotating component 24 is positively correlated with the focal length of the lens. By installing the potentiometer 91 in a suitable position, the potential value of the potentiometer 91 and the angle value of the rotating component 24 are made to have a one-to-one correspondence, thereby establishing a correspondence between the potential value and the focal length of the lens.

[0071] In application, the first circuit board 92 or other circuit boards connected to the first circuit board 92 can pre-store the correspondence between the potential value detected by the potentiometer 91, the angle of the rotating component 24, and the focal length of the lens. Alternatively, the correspondence between the potential value and the focal length of the lens can be pre-stored directly. Thus, when the potential value detected by the potentiometer 91 is obtained, the focal length of the lens can be determined directly. The potential value collected by the potentiometer 91 can be a voltage value or a resistance value. Alternatively, the first circuit board 92 can first calculate the angle value of the rotating component 24 based on the obtained potential value, and then calculate the focal length of the lens based on the angle of the focusing rotating component 24 and its relationship with the focal length of the lens.

[0072] Understandably, since the potentiometer 91 solution ultimately aims to obtain the angle of the rotating component 24, the potentiometer 91 solution can also be considered as an implementation of an angle detection component. Alternatively, a potentiometer that measures voltage changes can be used to determine the angle value through the measured voltage, and then determine the lens focal length.

[0073] For example, potentiometer 91 includes a resistive element and a rotatable potentiometer knob 911. The resistive element of potentiometer 91 has two fixed terminals. By adjusting the rotation of potentiometer knob 911, the position of the moving contact of potentiometer knob 911 on the resistive element is changed, thereby changing the resistance value between the moving contact and the fixed terminals, and thus changing the magnitude of voltage and current. When the rotating member 24 rotates, it drives the potentiometer knob 911 to rotate, thereby causing a voltage change on potentiometer 91. The magnitude of the output voltage of potentiometer 91 corresponds to the angle of rotating member 24, and the angle of rotating member 24 has a linear relationship with the focal length of the lens. Therefore, the focal length of the lens can be identified by the magnitude of the output voltage of potentiometer 91.

[0074] In some embodiments, to achieve the assembly of potentiometer 91, such as Figure 4 and Figure 6 As shown, the potentiometer knob 911 is located at the front end of the potentiometer 91, and the rear end of the rotating component 24 is provided with a driving structure, which is connected to the potentiometer knob 911. When the rotating component 24 rotates, it can drive the potentiometer knob 911 to rotate through the driving structure. At this time, the potentiometer 91 and the rotating component 24 are arranged axially, and the potentiometer 91 can be assembled using the space inside the body shell 3 on the rear side of the lens module 2, without occupying the space on the radially outer side of the lens module 2, thereby reducing the impact on the appearance of the lens module 2.

[0075] It should be noted that, in the embodiments of this application, unless otherwise specified, "front" and "rear" refer to two axial directions of the continuous zoom lens assembly 22, with the front end being... Figure 1 Middle left end, rear end Figure 1 Right middle end.

[0076] In some embodiments, such as Figure 7 and Figure 8 As shown, the rotating component 24 is provided with an arc-shaped drive groove 25 extending circumferentially. The potentiometer knob 911 extends axially into the arc-shaped drive groove 25 to improve the reliability of the connection. The circumferential direction is based on the axis of rotation of the rotating component 24. The drive structure includes multiple protrusions 26 arranged sequentially circumferentially on the groove wall of the arc-shaped drive groove 25. When the rotating component 24 rotates, the protrusions 26 sequentially push the potentiometer knob 911, forming a gear transmission, thereby changing the potential value generated by the potentiometer 91.

[0077] Specifically, such as Figure 7 As shown, the outer peripheral surface of the potentiometer knob 911 has multiple protruding teeth to form a first tooth surface, which is adjacent to the wall of the arc-shaped drive groove 25 (e.g., Figure 7 In the arc-shaped drive groove 25, the second tooth surface formed by the protrusion 26 on the groove wall located radially outside the potentiometer knob 911 forms a meshing structure. Thus, when the second tooth surface rotates with the rotating member 24, it can drive the first tooth surface to rotate. That is, a gear transmission is formed between the outer peripheral surface of the potentiometer knob 911 and the multiple protrusions 26, so that the potentiometer knob 911 rotates to change the voltage output by the potentiometer 91.

[0078] Specifically, the number and arrangement of protrusions 26 on the arc-shaped drive groove 25 can be determined according to the number and arrangement of protrusions on the potentiometer knob 911 to ensure that the selected potentiometer knob 911 can be driven to rotate smoothly. For example, the protrusions 26 on the arc-shaped drive groove 25 can be evenly arranged.

[0079] Of course, in addition to detecting the rotating component as described above in other embodiments, the detection component can also detect the position of the continuous zoom lens assembly 22 to determine the current lens focal length value of the lens module 2. In this case, the detection component detects the axial position of the selected lens in the continuous zoom lens assembly 22.

[0080] Specifically, the detection component 9 includes a distance detection component for detecting the axial movement distance of a selected lens element in the continuous zoom lens assembly 22, so as to determine the current focal length value of the lens module 2 based on the axial movement distance. It should be noted that the distance detection component detects the distance of the selected lens element relative to a preset origin position, and determines the axial position based on this distance. Alternatively, the distance detection component can be an optical sensor, with its transmitter connected to a stationary support structure in the continuous zoom lens module 2, emitting detection light axially, and its receiver connected to the selected lens element; or it can be an ultrasonic sensor, connected to a stationary support structure in the lens module 2, with its transmitter emitting ultrasonic waves axially toward the selected lens element and its receiver receiving the reflected ultrasonic waves.

[0081] In some embodiments, such as Figure 4 As shown, the continuous zoom lens assembly 22 includes a zoom lens group 221 and a focusing lens group 222. The rotating component 24 includes a zoom lens group guide cylinder 241 that drives the zoom lens group 221 to rotate, a focusing lens group guide cylinder 242 that drives the focusing lens group 222 to rotate, and a handwheel 243 that drives the zoom lens group guide cylinder 241 and the focusing lens group guide cylinder 242 to rotate. The angle detection component or the potential detection component can be used to detect the angle or potential after one, two, or three of the zoom lens group guide cylinder 241, the focusing lens group guide cylinder 242, and the handwheel 243 rotate. When the rotation of at least two of them is detected, the average value can be taken to determine the lens focal length value.

[0082] For example, such as Figure 4 and Figure 7 As shown, the lens module 2 includes a lens base 21 located at its axial rear end, and the lens base 21 is fixed to the front end of the body housing 3. The focal lens group guide tube 242 is rotatably connected to the front of the lens base 21. Taking the use of a potential detection component as an example, the potentiometer knob 911 passes through a through hole on the lens base 21 and is connected to the focal lens group guide tube 242.

[0083] Furthermore, such as Figure 5 and Figure 6 As shown, the imaging device also includes a core module 5, which is fixed to the rear end of the lens module 2. A first circuit board 92 is fixedly connected to the side of the core module 5, and a potentiometer 91 can be plugged in to be electrically connected to the first circuit board 92. At this time, the angle detection component or the potential detection component is directly fixedly connected to the core module 5, so that the core module 5, the angle detection component or the potential detection component can be integrally installed in the housing 3. Furthermore, the angle detection component or the potential detection component and the lens module 2 are all connected to the core module 5. When the lens module 2 moves perpendicular to the axial direction, the synchronous movement of the angle detection component or the potential detection component and the lens module 2 can also be ensured.

[0084] In some embodiments, such as Figure 5 and Figure 6 As shown, the movement module 5 includes a movement bracket 51 and a movement 52 connected to the movement bracket 51. The movement bracket 51 is fixedly connected to the lens base 21 of the lens module 2 or other structures in the lens module 2 that are stationary relative to the body shell 3. The first circuit board 92 is fixed to the side of the movement bracket 51.

[0085] At this time, when the lens module 2 is zooming, the rotating component 24 is rotated, which drives the potentiometer knob 911 to rotate through the protrusion 26 in the arc-shaped drive groove 25. The output voltage of the potentiometer 91 changes accordingly, corresponding to each angle of the rotating component 24. Based on the linear relationship between the angle of the rotating component 24 and the focal length of the lens, the focal length of the lens can be determined.

[0086] In some embodiments, such as Figure 17 and Figure 18 As shown, the lens module 2 is fixed to the front of the body shell 3, and the core module 5 is built into the body shell 3. The front end of the body shell 3 has a mounting port 34, through which the potentiometer 91 is connected to the rotating part 24. The core module 5 is connected to the lens module 2 through the same mounting port 34, which facilitates the assembly of the core module 5, the potentiometer 91 and the lens module 2.

[0087] In some embodiments, such as Figures 7 to 14 As shown, lens module 2 includes a main lens barrel 23. A continuous zoom lens assembly 22 is disposed within the main lens barrel 23, including a zoom lens group 221 and a focusing lens group 222 arranged sequentially from front to back along the axial direction. In this continuous zoom lens assembly 22, the zoom lens group 221 is used to change the focal length and field of view, while the focusing lens group 222 is used to achieve clear imaging of objects. Through the coordinated operation of the zoom lens group 221 and the focusing lens group 222, it is possible to maintain clear imaging of objects at different distances while continuously changing the focal length.

[0088] In addition, a fixed lens assembly 27 is fixedly provided on the inner side of the main lens barrel 23. For example... Figure 4 ,like Figures 9 to 14 As shown, the zoom lens group 221 is located on the front side of the fixed lens assembly 27, and the focusing lens group 222 is located on the rear side of the fixed lens assembly 27. The fixed lens assembly 27 includes a fixed lens barrel 271 and a fixed lens group 272 disposed in the fixed lens barrel 271.

[0089] To drive the axial movement of the lenses in the zoom lens group 221, such as Figure 4 , Figure 7 As shown, the rotating component 24 includes a zoom lens group guide tube 241, which is rotatably sleeved on the outside of the main lens tube 23, as shown. Figure 11 As shown, a first guide groove 231 extending axially is provided on the side wall of the main lens barrel 23. (As shown...) Figures 9 to 12 As shown, the zoom lens group guide tube 241 can drive the lens in the zoom lens group 221 to move axially via the first guide groove 231 on the main lens barrel 23. The zoom lens group guide tube 241 drives the zoom lens group 221 through the through hole on the main lens barrel 23, which can improve the integration of different lens groups and improve the structural compactness.

[0090] Specifically, such as Figures 9 to 12 As shown, the zoom lens assembly 221 is equipped with a zoom guide pin 28, and the side wall of the zoom lens assembly guide cylinder 241 is provided with a zoom guide groove 2411. The zoom guide groove 2411 is a spiral groove. One end of the zoom guide pin 28 is slidably connected in the zoom guide groove 2411, and the other end of the zoom guide pin 28 passes through the first guide groove 231 on the main lens barrel 23 and is fixedly connected to the zoom lens assembly 221. When the zoom lens assembly guide cylinder 241 rotates, the zoom guide groove 241 pushes the zoom guide pin 28. The thrust is perpendicular to the groove wall of the zoom guide groove 241. Under the constraint of the axial first guide groove 231, the zoom guide pin 28 moves axially, thereby driving the zoom lens assembly 221 to move axially. With the help of the zoom guide pin 28, the inclined surface of the zoom guide groove 241 and the guidance of the first guide groove 231, the rotational motion of the zoom lens group guide cylinder 241 can be converted into the axial movement of the zoom lens group 221 without the need for other transmission components. This simplifies the structure by eliminating the need for other transmission structures.

[0091] To drive the axial movement of the lenses in the focusing lens group 222, such as Figure 4 , Figure 7 As shown, the rotating component 24 also includes a focusing lens group guide tube 242, which is fixedly connected to the zoom lens group guide tube 241. Figure 14 As shown, a second guide groove 273 extending axially is provided on the side wall of the fixed lens barrel 271. For example... Figure 4 , Figure 13 and Figure 14 As shown, the focusing lens group guide tube 242 is sleeved on the outside of the fixed lens tube 271, and can drive the lens in the focusing lens group 222 to move axially via the second guide groove 273 on the fixed lens tube 271. The focusing lens group guide tube 242 drives the focusing lens group 222 through the through hole on the fixed lens tube 271, which can improve the integration of different lens groups and improve the structural compactness.

[0092] For example, such as Figure 13 and Figure 14As shown, the side wall of the focusing lens group guide tube 242 is provided with a focusing guide groove 2421, which is a spiral groove. The focusing lens group 222 is provided with a focusing guide pin 29. One end of the focusing guide pin 29 is slidably connected in the focusing guide groove 2421, and the other end of the focusing guide pin 29 passes through the second guide groove 273 on the fixed lens tube 271 and is fixedly connected to the focusing lens group 222. The second guide groove 273 is an axially extending straight groove. When the focusing lens group guide tube 242 rotates, the focusing guide groove 2421 pushes the focusing guide pin 29. The thrust is perpendicular to the groove wall of the focusing guide groove 2421. Under the constraint of the axial second guide groove 273, the focusing guide pin 29 moves axially, thereby driving the focusing lens group 222 to move axially. With the help of the inclined surfaces of the focusing guide pin 29, the focusing guide groove 2421, and the guidance of the second guide groove 273, the rotational motion of the focusing lens group guide cylinder 242 can be converted into the axial movement of the focusing lens group 222 without the need for other transmission components. This simplifies the structure by eliminating the need for other transmission structures.

[0093] For example, such as Figure 4 As shown, the focusing lens group guide tube 242 is located at the rear end of the lens module 2 in the axial direction, and the potentiometer 91 is connected to the focusing lens group guide tube 242. Specifically, the arc-shaped drive groove 25 is formed on the focusing lens group guide tube 242, and the potentiometer 91 is directly connected to the focusing lens group guide tube 242 located at the rear end via the rotating part 24, which facilitates assembly.

[0094] In addition, the rotating component 24 also includes a handwheel 243, which is fixedly connected to and rotates synchronously with the zoom lens group guide tube 241 and the focusing lens group guide tube 242. The handwheel 243 is sleeved on the outside of the zoom lens group guide tube 241.

[0095] For example, the handwheel 243 and the zoom lens group guide tube 241 are fixed by threads or screws, the zoom lens group guide tube 241 and the focusing lens group guide tube 242 are connected by screws, the main lens tube 23 and the fixed lens tube 271 are connected by screws, and the fixed lens tube 271 and the lens base 21 are connected by screws.

[0096] The continuous zoom mechanism includes: rotating the handwheel 243, which causes the zoom lens group guide cylinder 241 to rotate around an axis. The zoom guide pin 28, located in the zoom guide groove 2411, is limited by the first guide groove 231 of the main lens barrel 23 and can only move axially. The zoom guide pin 28 drives the zoom lens group 221 to move axially together. Since the zoom lens group guide cylinder 241 and the focusing lens group guide cylinder 242 are fixedly connected, when the zoom lens group guide cylinder 241 rotates around an axis, it will also drive the focusing lens group guide cylinder 242 to rotate around an axis. The focusing guide pin 29, located in the focusing guide groove 2421, is limited by the second guide groove 273 of the fixed lens group 272 and can only move axially. The focusing guide pin 29 drives the focusing lens group 222 to move axially together, thus realizing the lens zoom function. At this time, the zoom lens group 221 and the focusing lens group 222 are linked together under the drive of the rotating component 24.

[0097] Furthermore, for products with electronic zoom functionality, the zoom is centered on the crosshair cursor on display module 7 (which can also be replaced with a dot or other shaped cursor that indicates the center position). Electronic zoom refers to the technology of locally magnifying or reducing the infrared thermal image using digital image processing technology. Based on this, if the lens module is combined with continuous zoom functionality, when the focal length changes and the optical axis is no longer at the crosshair cursor position on display module 7, the optical axis position will deviate significantly during electronic zoom, leading to inaccurate target positioning.

[0098] The imaging device also includes adjustment components for this purpose. For example... Figure 2 As shown,

[0099] 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.

[0100] 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. It should be noted that in the case of radial translation of the infrared module 14, the first axis X is in the same direction as the axis of the continuous zoom lens assembly 22 in the aforementioned embodiment; while in the case of radial swing of the infrared module 14, the first axis X may be in the same direction as the axis of the continuous zoom lens assembly 22 in the aforementioned embodiment, or it may be in a different direction with a certain angle.

[0101] 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.

[0102] 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. The infrared module 14 can swing about a radial line on a first radial direction Z and a radial line on a second radial direction Y.

[0103] Imaging equipment can be specifically applied to infrared gun sights.

[0104] 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 19 During the adjustment process, the crosshair 71 at the center of the display module 7 remains stationary. By moving the infrared module 14, the actual target 72 can be made to coincide with the crosshair 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.

[0105] 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.

[0106] Furthermore, such as Figure 3As 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.

[0107] Furthermore, in the infrared module 14, such as Figure 2 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.

[0108] 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.

[0109] 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.

[0110] 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 3 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.

[0111] 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.

[0112] In some embodiments, such as Figure 15 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.

[0113] Furthermore, the adjustment assembly includes one or more adjustment modules 8 connected to the housing 3. For example... Figure 16 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 3 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.

[0114] In some embodiments, such as Figure 3 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.

[0115] 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.

[0116] Specifically, such as Figure 2 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.

[0117] 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.

[0118] 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 3In 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.

[0119] 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.

[0120] Specifically, such as Figures 21 to 23 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.

[0121] Of course, the above two situations can also exist in the same imaging device. 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.

[0122] In some embodiments, a plurality of adjustment modules 8 are evenly arranged on the outer periphery of the movement module 5. For example... Figure 3 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 3 The position of the movement module 5 can be fully adjusted in four directions (up, down, left, and right) from the perspective.

[0123] Furthermore, to achieve the connection between lens module 2 and mechanism module 5, such as... Figure 3 , Figures 5 to 15As 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.

[0124] 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 3 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.

[0125] Furthermore, to achieve the contact and cooperation between the movement module 5 and the adjustment component, such as Figure 5 and Figure 15 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.

[0126] In some embodiments, such as Figure 3 and Figure 15 As 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.

[0127] Furthermore, to achieve the connection between the lens module 2 and the body shell 3, such as... Figure 1 , Figure 3 and Figure 17As 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.

[0128] In some embodiments, such as Figure 16 As shown, the lens module 2 includes a continuous zoom 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 camera 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.

[0129] In some embodiments, such as Figure 1 , Figure 5 and Figure 15 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.

[0130] Furthermore, the imaging device also includes an electronic zoom module, and the electronic zoom module and display module 7 can both be electrically connected to the main control board.

[0131] In addition, in the 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 21 to 23 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.

[0132] Specifically, such as Figure 22 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.

[0133] 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.

[0134] 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.

[0135] 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, so it can be adjusted directly by hand without the need for tools.

[0136] 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 22 As 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.

[0137] 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.

[0138] Preferably, the fixed cylinder 35, the driven adjusting ring 83, and the adjusting knob 84 can be a unified integrated module, which is then installed integrally onto the outer casing 3 after assembly.

[0139] Furthermore, to achieve the driving of the driven adjusting ring 83 by the adjusting knob 84, such as... Figure 22 As shown, the adjusting knob 84 and the driven adjusting ring 83 are provided with a guiding structure, specifically including 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.

[0140] In some embodiments, to prevent the adjustment knob 84 from moving in the direction of its rotation centerline (e.g., Figure 22 In this configuration, 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, and the adjusting knob 84 rotates around the center line of the second radial direction Y but does not move along the second radial direction Y. The adjusting knob 84 includes a rotating wheel 841, a limiting ring 842, and a rotating cap 843. The rotating wheel 841 is rotatably connected to the fixed cylinder 35 and extends into the adjusting hole 31, but is separated from the thread in the adjusting hole 31 and does not engage with the thread. 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 clamped between the limiting ring 842 and the inner wall stepped surface of the adjusting hole 31 to achieve axial limiting 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 rotating cap 843 is sleeved on the radial outer end of the fixed cylinder 35 and 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, a guide structure is provided between the rotating wheel 841 and the driven adjusting ring 83.

[0141] Furthermore, to enable the infrared module 14 to swing, the imaging device 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.

[0142] Specifically, such as Figure 23 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.

[0143] 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.

[0144] In some embodiments, such as Figure 25 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, the ball center O is located at the front end of the ball head support 12, and the adjustment module 8 abuts against the rear end of the ball head support 12. By pushing the rear end of the ball head support 12 through the adjustment module 8, the ball head support 12 and its infrared module 14 swing around the front end ball center O. At this time, the distance between the point of action of the adjustment module 8 and the ball center O along the first axis X is relatively large, that is, the lever arm of the adjustment module 8 relative to the ball center O is relatively long, which has a labor-saving effect when moving the adjustment module 8.

[0145] In some embodiments, such as Figure 22As shown, at least two adjustment modules 8 are designated as 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 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.

[0146] In some embodiments, to improve the space utilization within the fuselage housing 3, such as Figure 22 , Figure 25 As shown, the first frame 121 is a ring-shaped frame that extends along the second radial direction Y. With the penetrating direction of the ring-shaped frame as its axial direction, the first adjustment module 81 abuts against the outer circumferential surface of the ring-shaped frame, and the second adjustment module 82 abuts against the shaft end of the ring-shaped frame. A battery mounting port 39 is also provided on the outer casing 3. The first battery module 11 can be detachably installed inside the ring-shaped frame via the battery mounting port 39. The first battery module 11 is easy to install and remove, facilitating replacement or charging.

[0147] 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 11, so as to prevent the first battery module 11 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.

[0148] 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 11 to separate the first battery module 11 from the first frame 121. The first battery compartment can be fixed inside the housing 3. The first battery module 11 can be detachably inserted into the first battery compartment. Alternatively, the first battery module 11 and the first battery compartment can be integrated and can be detachably installed in the housing 3.

[0149] Specifically, to ensure a gap between the first battery module 11 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 25 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 11 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.

[0150] In addition, such as Figure 22 As shown, a battery cover 310 is provided on the battery mounting port 39 to cover the battery mounting port 39. The battery cover 310 can be threaded onto the battery mounting port 39 for easy installation and removal. At this time, in the second radial direction Y, the battery cover 310 and the second adjustment module 82 are respectively located on both sides of the infrared module 14.

[0151] In addition, to ensure power supply capacity, such as Figure 22 As shown, a second battery module 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 11 and the second battery module can be used to power the electrical components in the thermal imager.

[0152] In some embodiments, in the ball head support 12, such as Figure 25 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.

[0153] In addition, such as Figure 24 As 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.

[0154] Furthermore, to achieve the assembly of the infrared module 14 with the housing 3, the infrared module 14 can be integrally assembled onto the housing 3. Optionally, refer to... Figure 21 The infrared module 14 also includes a ranging module 16, 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 16 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 16 is consistent with the optical axis of the lens module 2 and the core module 5. This helps the ranging module 16 to locate the target position in the center of the imaging system.

[0155] In addition, such as Figure 23As shown, the lens module 2 is fitted with a second pressure ring 311 and a limiting spherical ring 312. After the ranging module 16, 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 312 is placed on the front end of the inner wall of the body housing 3. Then, the second pressure ring 311 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 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.

[0156] At this time, the limiting spherical ring 312 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 312 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.

[0157] 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.

[0158] In addition to the imaging device described above, the present invention also provides a ballistic calculation method, which can be implemented using the imaging device in any of the above embodiments.

[0159] In some specific embodiments of the ballistic calculation method, the following steps are included:

[0160] S1: After adjusting the focal length of the lens of the imaging device by rotating component 24, the position detection value of the current continuous zoom lens component 22 or rotating component 24 is obtained based on the detection component 9.

[0161] This ballistic calculation method can be implemented through ballistic prediction software set in the controller.

[0162] The position detection value is either the angle of the rotating component 24 or the axial position of the continuous zoom lens assembly 22.

[0163] S2: Based on the position change detection value and the relationship between the position detection value and the lens focal length value, the current lens focal length value is calculated.

[0164] Specifically, the controller first receives the physical displacement of the selected lens detected by the detection component 9 to obtain the position detection value; then it calls the pre-stored correspondence (such as a lookup table, polynomial fitting function, etc.) and substitutes the position detection value into the pre-stored correspondence; finally, it uses mathematical methods such as curve fitting or matrix transformation to inversely calculate the lens focal length value corresponding to the current position detection value.

[0165] S3: Perform ballistic calculations based on the lens focal length and preset ballistic influence parameters.

[0166] Specifically, the preset ballistic influence parameters include bullet information, target distance, air density, wind speed and direction, altitude, and gravitational acceleration.

[0167] Specifically, this calculation yields the impact point. In this step, the controller uses the lens focal length to calculate key geometric parameters such as the target distance, and simultaneously calls a pre-stored ballistic database of ballistic influence parameters. It then integrates these parameters and invokes pre-stored ballistic algorithms to calculate the projectile's trajectory. Finally, by analyzing the intersection of the calculation results with the target's spatial plane or terrain, the coordinates of the impact point are extracted.

[0168] Based on the above calculation method, the impact point can be accurately predicted, solving the problems of inaccurate optical axis and single-point offset when the continuous zoom lens assembly 22 is used in gun sight products, thus ensuring the accuracy of the shot.

[0169] 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.

[0170] 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.

[0171] 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.

[0172] 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.

[0173] The imaging device provided by this invention has 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. An imaging device, characterized in that, include: The lens module (2) includes a continuous zoom lens assembly (22) and a rotating component (24) that is connected to the continuous zoom lens assembly (22) in a transmission manner. When the rotating component (24) rotates, it can drive the lens in the continuous zoom lens assembly (22) to move axially to achieve zoom. The detection component (9) is used to detect the position of the continuous zoom lens assembly (22) or the rotating component (24) to determine the current lens focal length value of the lens module (2).

2. The imaging device according to claim 1, characterized in that, The detection component (9) includes an angle detection component for detecting the angle of rotation of the rotating component (24) to determine the current lens focal length value of the lens module (2) based on the angle. Alternatively, the detection component (9) may include a potential detection component for detecting the potential value generated by the rotation of the rotating component (24) to determine the current lens focal length value of the lens module (2) based on the potential value. Alternatively, the detection component (9) may include a distance detection component for detecting the axial movement distance of a selected lens in the continuous zoom lens assembly (22) to determine the current lens focal length value of the lens module (2) based on the axial movement distance.

3. The imaging device according to claim 2, characterized in that, The potential detection component includes: A potentiometer (91) is connected to the rotating component (24) and is used to detect the potential value generated when the rotating component (24) rotates; The first circuit board (92) is electrically connected to the potentiometer (91), and the first circuit board (92) is used to determine the current lens focal length value of the lens module (2) based on the potential value detected by the potentiometer (91).

4. The imaging device according to claim 3, characterized in that, The rotating component (24) is provided with an arc-shaped drive groove (25) extending circumferentially. The potentiometer knob (911) of the potentiometer (91) extends axially into the arc-shaped drive groove (25). Multiple protrusions (26) are arranged sequentially along the circumferential direction on the groove wall of the arc-shaped drive groove (25). When the rotating component (24) rotates, the potentiometer knob (911) can be pushed to rotate sequentially through each of the protrusions (26), thereby changing the potential value of the potentiometer (91).

5. The imaging device according to claim 3, characterized in that, It also includes a mechanism module (5) and a body shell (3); the mechanism module (5) is fixed to the rear end of the lens module (2); the potential detection component is fixedly connected to the side of the mechanism module (5); the lens module (2) is fixed to the front of the body shell (3), and the mechanism module (5) is built into the body shell (3); the front end of the body shell (3) has a mounting port (34), the potentiometer (91) is connected to the rotating part (24) through the mounting port (34), and the mechanism module (5) is connected to the lens module (2) through the mounting port (34).

6. The imaging device according to claim 5, characterized in that, The first circuit board (92) is fixedly connected to the side of the mechanism module (5), and the potentiometer (91) is plugged in to be electrically connected to the first circuit board (92).

7. The imaging device according to any one of claims 1 to 6, characterized in that, The lens module (2) also includes a main lens barrel (23), and the continuous zoom lens assembly (22) includes a zoom lens group (221) disposed in the main lens barrel (23). The rotating component (24) includes a zoom lens group guide tube (241), which is rotatably sleeved on the outside of the main lens tube (23) and can drive the lens in the zoom lens group (221) to move axially via the first guide groove (231) on the main lens tube (23).

8. The imaging device according to claim 7, characterized in that, The lens module (2) also includes a focusing lens group (222); The inner side of the main lens barrel (23) is fixedly provided with a fixed lens assembly (27). The fixed lens assembly (27) includes a fixed lens barrel (271) and a fixed lens group (272) disposed in the fixed lens barrel (271). The focusing lens group (222) is disposed in the fixed lens barrel (271) and is located on the rear side of the fixed lens group (272). The rotating component (24) also includes a focusing lens group guide tube (242), which is fixedly connected to the zoom lens group guide tube (241). The focusing lens group guide tube (242) is sleeved on the outside of the fixed lens tube (271) and can drive the lens in the focusing lens group (222) to move axially via the second guide groove (273) on the fixed lens tube (271).

9. The imaging device according to any one of claims 1 to 6, characterized in that, It also includes the outer casing (3), inside which a display module (7) is fixed; 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 axial direction. 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).

10. A ballistic calculation method, characterized in that, include: After the lens focal length of the imaging device is adjusted by the rotating component (24), the position detection value of the current continuous zoom lens assembly (22) or the rotating component (24) is obtained based on the detection component (9); Based on the position detection value and the relationship between the position detection value and the lens focal length value, the current lens focal length value is calculated. Ballistics calculations are performed based on the lens focal length and preset ballistic influence parameters.

Images