An imaging focusing device and a focusing camera

Abstract

This invention discloses an imaging focusing device and a focusing camera. The imaging focusing device includes: a movable component connected to an imaging unit; at least two parallel guide posts, the movable component having shaft holes through which it is fitted onto the guide posts; the guide posts guiding the movement direction of the movable component; a mounting bracket for mounting a magnetic linear motor; the mounting bracket including a first sidewall with a guide groove on its surface, the guide groove extending parallel to the guide posts; and a sensing plate connected to the movable component, the sensing plate being disposed within the guide groove. The magnetic linear motor provides electromagnetic driving force to move the sensing plate along the guide groove, reducing imaging adjustment jitter and achieving continuous adjustment.

Description

Technical Field

[0001] This invention relates to the field of imaging lens technology, and more particularly to an imaging focusing device and a focusing camera. Background Technology

[0002] Current infrared optical imaging typically requires changing lenses with different magnifications. For imaging at different distances and in different scenes, different positions need to be adjusted to adjust the focal length. The focusing method of traditional optical lenses generally uses stepper motors. Stepper motors often use lead screws or threads to convert the rotational motion of the motor into linear motion. Stepper motors have large vibrations when they operate, which affects the focusing accuracy. In addition, the motion continuity of stepper motors is poor, making the imaging control unstable and requiring repeated adjustments. Summary of the Invention

[0003] This invention provides an imaging focusing device and a focusing camera that reduce imaging adjustment jitter and achieve continuous adjustment.

[0004] In a first aspect, embodiments of the present invention provide an imaging focusing device, comprising:

[0005] A movable component, which is connected to the imaging unit;

[0006] At least two parallel guide posts are provided, and the movable part is provided with shaft holes. The movable part is sleeved on the guide posts through the shaft holes. The guide posts are used to guide the movement direction of the movable part.

[0007] The mounting bracket is used to mount a magnetic linear motor; the mounting bracket includes a first sidewall, the surface of which is provided with a guide groove, the extending direction of which is parallel to the guide post;

[0008] The sensing element is connected to the movable component and is disposed in the guide groove. The magnetic linear motor is used to provide electromagnetic driving force to move the sensing element along the guide groove.

[0009] Optionally, the shaft hole is disposed on both sides of the imaging unit, and the sensing sheet is disposed on the side of the movable part near the shaft hole.

[0010] Optionally, the mounting bracket further includes a second sidewall and an adjusting rod, and the magnetic linear motor is disposed between the first sidewall and the second sidewall;

[0011] The second sidewall is provided with a through hole, and the adjusting rod passes through the through hole. By adjusting the length of the adjusting rod between the first sidewall and the second sidewall, the flatness of the magnetic linear motor and the gap distance between the magnetic linear motor and the first sidewall can be adjusted.

[0012] Optionally, one end of the adjusting rod near the magnetic linear motor is connected to the surface of the magnetic linear motor.

[0013] Optionally, the imaging focusing device further includes a drive motor, which is connected to the adjusting rod in a transmission manner. The drive motor is used to provide adjustment power to adjust the length of the adjusting rod between the first sidewall and the second sidewall.

[0014] Secondly, embodiments of the present invention provide a focusing camera, including: a base, a lens, a control unit, and an imaging focusing device as described in any embodiment of the present invention;

[0015] The imaging focusing device is mounted on the base; the lens is mounted on the side of the base away from the imaging focusing device.

[0016] The control unit is connected to the magnetic linear motor, and the control unit is used to control the magnitude and direction of the electromagnetic driving force of the magnetic linear motor.

[0017] Optionally, the first surface of the base is provided with a base bushing corresponding to the position of the guide post, and the base bushing is used to fix one end of the guide post;

[0018] The second surface of the base is provided with a lens mounting boss, which is used to mount the lens. The first surface and the second surface are opposite surfaces.

[0019] Optionally, the focusing camera further includes a fixing cover; the fixing cover is disposed on the side of the imaging focusing device away from the base; the surface of the fixing cover is provided with a fixing cover bushing corresponding to the position of the guide post; the fixing cover bushing and the base bushing fix the guide post; the vertical projection of the fixing cover on the base at least covers the imaging unit.

[0020] Optionally, the fixing cover has a third sidewall extending toward the base, and the imaging focusing device is located within the space enclosed by the third sidewall, or at least the imaging unit is located within the space enclosed by the third sidewall.

[0021] When at least the imaging unit is located within the space enclosed by the third sidewall, a notch is provided on the third sidewall to provide clearance space.

[0022] Optionally, the control unit is located on the side of the fixed cover away from the base.

[0023] The imaging focusing device provided in this embodiment of the invention guides the movement direction of the moving parts through at least two parallel guide posts, and utilizes a magnetic linear motor to provide electromagnetic driving force. By adjusting the magnitude of the electromagnetic driving force, precise adjustment of the linear distance between the imaging unit and the object can be achieved. Compared with the lead screw or thread transmission of existing drive motors, this reduces vibration and enables continuous adjustment. Furthermore, structurally, the sensing element is disposed within a guide groove in the first sidewall. Therefore, when the sensing element is subjected to electromagnetic driving force, the limiting effect of the guide groove sidewall prevents vibration and movement deviation of the sensing element, further reducing vibration of the moving parts, making the movement of the moving parts smooth, and improving imaging stability. Attached Figure Description

[0024] Figure 1 This is a schematic cross-sectional view of an imaging focusing device provided in an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the first-view structure of an imaging focusing device provided in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the second-view structure of an imaging focusing device provided in an embodiment of the present invention;

[0027] Figure 4 This invention provides a schematic diagram of the structure of a mounting bracket according to an embodiment of the invention;

[0028] Figure 5 This invention provides a schematic diagram of the structure of a movable component according to an embodiment of the invention;

[0029] Figure 6 This invention provides a schematic diagram of the structure of a drive motor according to an embodiment of the invention;

[0030] Figure 7 This is a schematic diagram of the structure of a base provided in an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of a fixed cover provided in an embodiment of the present invention.

[0032] Figure Labels Figure label name 1 base 11 Base bushing 12 Lens mounting boss 2 Moving parts 21 Shaft Hole 22 Induction plate 23 Imaging unit 3 Magnetic linear motor 4 Guide column 5 Fixed cover 51 Fixed cover bushing 52 Third side wall 53 gap 54 Attached ear 6 lens 7 drive motor 71 Second Turbine 8 Mounting bracket 81 First worm gear 82 Guide groove 83 Adjusting rod 9 Control Unit Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0034] Figure 1 This is a schematic cross-sectional view of an imaging focusing device provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of the first-view structure of an imaging focusing device provided in an embodiment of the present invention. Figure 3 This is a schematic diagram of the second-view structure of an imaging focusing device provided in an embodiment of the present invention. See also: Figures 1-3 It includes: a movable component 2, which is connected to the imaging unit 23;

[0035] At least two parallel guide posts 4 are provided, and the movable part 2 is provided with a shaft hole 21. The movable part 2 is sleeved on the guide post 4 through the shaft hole 21; the guide post 4 is used to guide the movement direction of the movable part 2.

[0036] Mounting bracket 8 is used to mount magnetic linear motor 3; mounting bracket 8 includes a first sidewall, the surface of which is provided with guide groove 82, the extending direction of guide groove 82 being parallel to guide post 4;

[0037] The sensing element 22 is connected to the movable part 2 and is set in the guide groove 82. The magnetic linear motor 3 is used to provide electromagnetic driving force to make the sensing element 22 move along the guide groove 82.

[0038] Specifically, the movable part 2 is provided with a through shaft hole 21, and the guide post 4 passes through the shaft hole 21. Therefore, the guide post 4 can be used to guide the movable part 2 to move along the extension direction of the guide post 4, thereby limiting the movement direction of the movable part 2.

[0039] A mounting structure can be provided on the movable part 2 for mounting the imaging unit 23. When the movable part 2 moves, the imaging unit 23 can move together with the movable part 2. For example, the extending direction of the guide post 4 can be parallel to the optical axis of the imaging unit 23. Therefore, when the movable part 2 moves along the extending direction of the guide post 4, the straight-line distance between the imaging unit 23 and the object can be changed. For example, the imaging unit 23 can be an imaging lens or an infrared focal plane detector. Therefore, adjusting the straight-line distance can adjust the focal length or the position of the imaging plane.

[0040] Mounting bracket 8 is used to mount the magnetic linear motor 3. Figure 4 This is a schematic diagram of the structure of a mounting bracket provided in an embodiment of the present invention. See also: Figure 4For example, the mounting bracket 8 can be U-shaped, and the magnetic linear motor 3 can be disposed within the groove. A first sidewall is also provided on one side of the mounting bracket 8, and a guide groove 82 is provided on the surface of the first sidewall away from the magnetic linear motor 3. The guide groove 82 is used to accommodate the sensing element 22, and the extending direction of the guide groove 82 is parallel to the guide post 4. When the magnetic linear motor 3 is working, it can provide electromagnetic driving force to the sensing element 22, causing the sensing element 22 to move along the guide groove 82. The sensing element 22 is connected to the movable component 2, thereby causing the movable component 2 to drive the imaging unit 23 to move along the guide post 4. For example, the sensing element 22 and the movable component 2 can be an integral structure.

[0041] By controlling the direction and magnitude of the current in the drive coil of the magnetic linear motor 3, the magnitude and direction of the driving magnetic field can be changed, thereby adjusting the speed and direction of the induction plate 22 moving along the guide groove 82. Therefore, by adjusting the magnitude of the electromagnetic driving force, precise adjustment of the linear distance between the imaging unit 23 and the object can be achieved. Compared to the lead screw or thread transmission of existing drive motors, this reduces vibration and enables continuous adjustment. Furthermore, structurally, the induction plate 22 is positioned within the guide groove 82 on the first sidewall. When the induction plate 22 is subjected to the electromagnetic driving force, the guide groove 82's sidewall limits its movement, preventing vibration and movement deviation. This further reduces vibration of the moving part 2, making its movement smoother and improving imaging stability.

[0042] The imaging focusing device provided in this embodiment of the invention guides the movement direction of the movable component 2 through at least two parallel guide posts 4, and uses a magnetic linear motor 3 to provide electromagnetic driving force. By adjusting the magnitude of the electromagnetic driving force, the linear distance between the imaging unit 23 and the object can be precisely adjusted. Compared with the lead screw or thread transmission of existing drive motors, this reduces jitter and enables continuous adjustment. Furthermore, structurally, the sensing plate 22 is disposed within the guide groove 82 on the first side wall. Therefore, when the sensing plate 22 is subjected to electromagnetic driving force, the limiting effect of the side wall of the guide groove 82 prevents the sensing plate 22 from jittering and shifting, further reducing the jitter of the movable component 2, making the movement of the movable component 2 smooth, and improving the stability of imaging.

[0043] Figure 5 This is a schematic diagram of the structure of a movable component provided in an embodiment of the present invention. See also: Figure 5 The shaft hole 21 is located on both sides of the imaging unit 23, and the sensor sheet 22 is located on the side of the movable part 2 near the shaft hole 21.

[0044] Specifically, the shaft holes 21 are located on both sides of the imaging unit 23. That is to say, the guide posts 4 through which the shaft holes 21 are fitted are also located on both sides of the imaging unit 23. For example, the guide posts 4 can be symmetrically arranged based on the imaging unit 23. Therefore, the shaft holes 21 on the movable part 2 are also symmetrically arranged based on the imaging unit 23. The imaging unit 23 is located between the shaft holes 21, which can reduce the impact on the center of gravity of the movable part 2 after the imaging unit 23 is installed. Since the center of gravity is stable or centered, the stability of the movable part 2 when moving can be further improved.

[0045] The sensor 22 can be positioned at one end of the movable component 2. That is, by positioning the sensor 22 at the end of the movable component 2, a set of magnetic linear motors 3 can achieve unilateral drive, thereby reducing the space occupied by the lens, imaging unit 23, and other light transmission components, and facilitating the overall layout of the devices. Since the sensor 22 is positioned at one end of the movable component 2, the acceleration at the end receiving the electromagnetic driving force is greater. To avoid jitter and offset caused by different acceleration processes at both ends, the sensor 22 can be positioned on the side of the movable component 2 closer to the shaft hole 21. Thus, when the electromagnetic driving force acts on the sensor 22, it can directly drive the movable component 2 to move along the guide post 4, preventing the movable component 2 from tilting relative to the guide post 4, which would cause jitter and offset, further improving the stability of the movable component 2's movement.

[0046] In some embodiments, the sensor 22 can also be positioned at both ends of the movable component 2 symmetrically. By respectively arranging magnetic linear motors 3, that is, by using two sets of magnetic linear motors 3, bilateral drive can be achieved, thereby improving the smoothness of the movement of the movable component 2.

[0047] See also Figure 4 Optionally, the mounting bracket 8 also includes a second sidewall and an adjusting rod 83, with the magnetic linear motor 3 disposed between the first sidewall and the second sidewall;

[0048] The second sidewall is provided with a through hole, through which the adjusting rod 83 passes. By adjusting the length between the first and second sidewalls, the flatness of the magnetic linear motor 3 and the gap between the magnetic linear motor 3 and the first sidewall can be adjusted.

[0049] Specifically, the first and second sidewalls, together with the bottom wall, can form a U-shaped structure, which can accommodate the magnetic linear motor 3. The inner wall of the through hole in the second sidewall can be threaded, and the corresponding adjusting rod 83 can also be fitted with a corresponding thread. Therefore, by rotating the adjusting rod 83, the length of the adjusting rod 83 extending between the first and second sidewalls along the through hole can be adjusted. Thus, the space between the first and second sidewalls can be slightly larger than the width of the magnetic linear motor 3, facilitating its installation.

[0050] The mounting position of the magnetic linear motor 3 can be adjusted by rotating the adjusting rod 83. For example, the side of the adjusting rod 83 near the magnetic linear motor 3 can be a flat surface. Therefore, when the length of the adjusting rod 83 extending between the first and second side walls increases, the flat surface of the adjusting rod 83 fits against the magnetic linear motor 3, which can improve the flatness of the magnetic linear motor 3 and prevent the installation position of the magnetic linear motor 3 from tilting, which would lead to deviation of the electromagnetic driving force and affect the smooth movement of the moving part 2.

[0051] Furthermore, by adjusting the length of the adjusting rod 83 extending between the first and second side walls, the gap distance between the magnetic linear motor 3 and the first side wall can be adjusted, that is, the gap distance between the magnetic linear motor 3 and the sensing plate 22 can be adjusted, thereby achieving the adjustment of the relative position of the magnetic linear motor 3 and the sensing plate 22. For example, when the gap distance between the magnetic linear motor 3 and the sensing plate 22 is large, the electromagnetic driving force of the magnetic linear motor 3 acting on the sensing plate 22 will be smaller than the actual output; when the gap distance between the magnetic linear motor 3 and the sensing plate 22 is small, the electromagnetic driving force of the magnetic linear motor 3 acting on the sensing plate 22 will be larger than the actual output, thus affecting the accuracy of the movement control of the moving part 2. By adjusting the length of the adjusting rod 83 extending between the first and second side walls, the gap distance between the magnetic linear motor 3 and the sensing plate 22 can be adjusted, improving the accuracy of the electromagnetic driving force of the magnetic linear motor 3 acting on the sensing plate 22, thereby ensuring that the moving part 2 can obtain a stable and continuous force.

[0052] Optionally, the end of the adjusting rod 83 near the magnetic linear motor 3 is connected to the surface of the magnetic linear motor 3. Specifically, the connection between the adjusting rod 83 and the magnetic linear motor 3 can be by adhesive bonding or by magnetic attraction. Therefore, by reducing the length of the adjusting rod 83 extending between the first and second sidewalls, the adjusting rod 83 can drive the magnetic linear motor 3, thereby increasing the gap distance between it and the sensing plate 22. Thus, the position of the magnetic linear motor 3 can be adjusted in two directions, improving the accuracy of the electromagnetic driving force of the magnetic linear motor 3 acting on the sensing plate 22.

[0053] Figure 6 This invention provides a schematic diagram of the structure of a drive motor according to an embodiment of the invention, combined with... Figure 3 See Figure 6 Optionally, the imaging focusing device also includes a drive motor 7, which is connected to the adjusting rod 83. The drive motor 7 is used to provide adjustment power to adjust the length of the adjusting rod 83 between the first side wall and the second side wall.

[0054] Specifically, the drive motor 7 can be located on one side of the magnetic linear motor 3, and the drive motor 7 can provide rotational power output. For example, a first turbine 81 can be located at the end of the adjusting rod 83 away from the magnetic linear motor 3. The drive motor 7 outputs rotational power from the second turbine 71. The first turbine 81 and the second turbine 71 can mesh to form a transmission connection. Therefore, when the drive motor 7 outputs rotational power, the second turbine 71 drives the first turbine 81 to rotate, and the first turbine 81 drives the adjusting rod 83 to rotate, thereby adjusting the length of the adjusting rod 83 extending between the first and second side walls. The operating parameters of the drive motor 7, such as speed, rotation direction, and working time, can be controlled by an external controller, thereby improving the adjustment accuracy of the adjusting rod 83.

[0055] See also Figures 1-3 The present invention also provides a focusing camera, including: a base 1, a lens 6, a control unit 9, and an imaging focusing device according to any embodiment of the present invention;

[0056] An imaging focusing device is mounted on a base 1; a lens 6 is mounted on the side of the base 1 away from the imaging focusing device.

[0057] The control unit 9 is connected to the magnetic linear motor 3, and the control unit 9 is used to control the magnitude and direction of the electromagnetic driving force of the magnetic linear motor 3.

[0058] Specifically, base 1 serves as a platform supporting the imaging focusing device. One side of base 1 is used to mount the imaging focusing device, and the other side is used to mount the lens 6. When the distance between the lens 6 and the object is fixed, a clear image can be obtained by adjusting the position of the imaging unit 23. The imaging unit 23 can move parallel to the optical axis. Therefore, when the movable part 2 moves along the extension direction of the guide post 4, the straight-line distance between the imaging unit 23 and the object can be changed. For example, the imaging unit 23 can be an imaging lens or an infrared focal plane detector. Therefore, adjusting the straight-line distance can adjust the focal length or the position of the imaging plane.

[0059] The sensing element 22 is disposed within the guide groove 82. When subjected to electromagnetic driving force, the sensing element 22 moves along the guide groove 82, thereby causing the movable component 2 to drive the imaging unit 23 to move along the guide post 4. During operation, the control unit 9 controls the direction and magnitude of the electromagnetic driving force output by the magnetic linear motor 3 onto the sensing element 22, thereby adjusting the speed and direction of the sensing element 22's movement along the guide groove 82. Therefore, precise adjustment of the linear distance between the imaging unit 23 and the object can be achieved. Compared to the lead screw or thread transmission of the existing drive motor 7, this reduces vibration and enables continuous adjustment. Furthermore, structurally, the sensing element 22 is disposed within the guide groove 82 on the first side wall. When subjected to electromagnetic driving force, the sensing element 22 is prevented from vibrating or shifting due to the limitation of the side wall of the guide groove 82, further reducing the vibration of the movable component 2, making the movement of the movable component 2 smoother, and improving the stability of the imaging.

[0060] Figure 7 This is a schematic diagram of the structure of a base provided in an embodiment of the present invention. See also: Figure 7 The first surface of the base 1 is provided with a base bushing 11 corresponding to the position of the guide post 4. The base bushing 11 is used to fix one end of the guide post 4. The second surface of the base 1 is provided with a lens mounting boss 12. The lens mounting boss 12 is used to mount the lens 6. The first surface and the second surface are opposite surfaces.

[0061] Specifically, the guide post 4 can be installed correspondingly to the base bushing 11 on the first surface of the base 1, improving the stability of the guide post 4 and avoiding the shaking effect caused by the guide post 4 when the moving part 2 moves. The base 1 also has a hollow area for the passage of light from the lens 6 and the imaging unit 23. The second surface of the base 1 can be provided with a lens mounting boss 12 around the hollow area. The lens 6 can be rotatably mounted on one side of the base 1 through the lens mounting boss 12, which facilitates the replacement and application of different lenses 6.

[0062] Figure 8 This is a schematic diagram of the structure of a fixed cover provided in an embodiment of the present invention. See also: Figure 8 The focusing camera also includes a fixing cover 5; the fixing cover 5 is located on the side of the imaging focusing device away from the base 1; the surface of the fixing cover 5 is provided with a fixing cover bushing 51 corresponding to the position of the guide post 4; the fixing cover bushing 51 and the base bushing 11 fix the guide post 4; the vertical projection of the fixing cover 5 on the base 1 at least covers the imaging unit 23.

[0063] Specifically, the fixing cover bushing 51 on the surface of the fixing cover 5 can cooperate with the base bushing 11 of the base 1 to fix the guide post 4, further avoiding the shaking effect caused by the guide post 4 when the moving part 2 moves. The vertical projection of the fixing cover 5 on the base 1 at least covers the imaging unit 23. That is to say, the fixing cover 5 is set above the imaging unit 23, thereby playing a role in blocking light and preventing external light sources from shining directly on the imaging unit 23 or the lens 6, which would cause problems such as unclear images or inaccurate imaging.

[0064] Optionally, the fixed cover 5 has a third sidewall 52 extending toward the base 1, and the imaging focusing device is located within the space enclosed by the third sidewall 52. Specifically, the third sidewall 52 encloses a space that can cover the imaging focusing device, providing better light-shielding and protecting the imaging focusing device.

[0065] In some embodiments, see Figure 2 and Figure 3 Optionally, at least the imaging unit 23 is located within the space enclosed by the third sidewall 52; that is, the enclosed space formed by the third sidewall 52 covers the imaging unit 23, providing light shielding and protection for the imaging unit 23. Furthermore, it facilitates maintenance, replacement, and adjustment of components such as the magnetic linear motor 3 and the drive motor 7. This improves ease of use and reduces the size of the focusing camera.

[0066] Optionally, when at least the imaging unit 23 is located within the space enclosed by the third sidewall 52, since the vertical projection of the fixing cover 5 on the base 1 at least covers the imaging unit 23, the surface area of ​​the fixing cover 5 will also decrease, thus affecting the setting space of the fixing sleeve. Therefore, an attachment 54 can be formed by extending outward from the surface of the fixing cover 5, and a corresponding fixing sleeve can be set on the attachment 54 to avoid affecting the spatial distribution of the guide post 4. Furthermore, the third sidewall 52 will affect some spatial structures of the imaging focusing device. Therefore, a notch 53 can be provided corresponding to the conflict position on the third sidewall 52 to provide clearance space. For example, see Figure 2 and Figure 3 The extension direction of the notch 53 is parallel to that of the guide post 4, thereby using the notch 53 to avoid the movement of the movable part 2.

[0067] Based on the above embodiments, the control unit 9 can be connected to the magnetic linear motor 3 and the drive motor 7. The control unit 9 can control the magnetic linear motor 3 through corresponding software algorithms, utilizing the electromagnetic driving force provided by the magnetic linear motor 3. By adjusting the magnitude of the electromagnetic driving force, the linear distance between the imaging unit 23 and the object can be precisely adjusted. The control unit 9 can be connected to the drive motor 7, and the control unit 9 is used to control the operating parameters of the drive motor 7, such as rotation speed, rotation direction, and working time, thereby adjusting the flatness of the magnetic linear motor 3 and the gap distance between the magnetic linear motor 3 and the sensing plate 22. The control unit 9 can be set on the side of the fixed cover 5 away from the base 1. When the lens 6 is aligned with the object, the control unit 9 can face the side of use for easy application and adjustment.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An imaging focusing device, characterized in that, include: A movable component, which is connected to the imaging unit; At least two parallel guide posts are provided, and the movable part is provided with shaft holes. The movable part is sleeved on the guide posts through the shaft holes. The guide posts are used to guide the movement direction of the movable part. The mounting bracket is used to mount a magnetic linear motor; the mounting bracket includes a first sidewall, the surface of which is provided with a guide groove, the extending direction of which is parallel to the guide post; The sensing element is connected to the movable component and is disposed in the guide groove. The magnetic linear motor is used to provide electromagnetic driving force to move the sensing element along the guide groove. The mounting bracket also includes a second sidewall and an adjusting rod, and the magnetic linear motor is disposed between the first sidewall and the second sidewall; The second sidewall is provided with a through hole, and the adjusting rod passes through the through hole. By adjusting the length of the adjusting rod between the first sidewall and the second sidewall, the flatness of the magnetic linear motor and the gap distance between the magnetic linear motor and the first sidewall can be adjusted.

2. The imaging focusing device according to claim 1, characterized in that, The shaft holes are located on both sides of the imaging unit, and the sensing sheet is located on the side of the movable part near the shaft holes.

3. The imaging focusing device according to claim 1, characterized in that, The end of the adjusting rod near the magnetic linear motor is connected to the surface of the magnetic linear motor.

4. The imaging focusing device according to claim 3, characterized in that, It also includes a drive motor, which is connected to the adjusting rod and is used to provide adjustment power to adjust the length of the adjusting rod between the first sidewall and the second sidewall.

5. A focusing camera, characterized in that, include: The base, lens, control unit, and imaging focusing device according to any one of claims 1-4; The imaging focusing device is mounted on the base; the lens is mounted on the side of the base away from the imaging focusing device. The control unit is connected to the magnetic linear motor, and the control unit is used to control the magnitude and direction of the electromagnetic driving force of the magnetic linear motor.

6. The focusing camera according to claim 5, characterized in that, The first surface of the base is provided with a base bushing corresponding to the position of the guide post, and the base bushing is used to fix one end of the guide post. The second surface of the base is provided with a lens mounting boss, which is used to mount the lens. The first surface and the second surface are opposite surfaces.

7. The focusing camera according to claim 6, characterized in that, It also includes a fixing cover; the fixing cover is disposed on the side of the imaging focusing device away from the base; the surface of the fixing cover is provided with a fixing cover bushing corresponding to the position of the guide post; the fixing cover bushing and the base bushing fix the guide post; the vertical projection of the fixing cover on the base at least covers the imaging unit.

8. The focusing camera according to claim 7, characterized in that, The fixed cover has a third sidewall extending toward the base, and the imaging focusing device is located within the space enclosed by the third sidewall, or at least the imaging unit is located within the space enclosed by the third sidewall. When at least the imaging unit is located within the space enclosed by the third sidewall, a notch is provided on the third sidewall to provide clearance space.

9. The focusing camera according to any one of claims 7-8, characterized in that, The control unit is located on the side of the fixed cover away from the base.

Images