Imaging focusing device and focusing camera

Abstract

The invention discloses an imaging focusing device and a focusing camera, and the device comprises a movable part which is connected with an imaging unit; at least two parallel guide columns, shaft holes are formed in the movable parts, and the movable parts are arranged on the guide columns in a sleeving mode through the shaft holes; the guide column is used for guiding the moving direction of the movable part; the mounting bracket is used for mounting the magnetic linear motor; the mounting bracket comprises a first side wall, a guide groove is formed in the surface of the first side wall, and the extension direction of the guide groove is parallel to the guide column; the movable part is provided with a guide groove, the induction piece is connected with the movable part and arranged in the guide groove, the magnetic linear motor is used for providing electromagnetic driving force to enable the induction piece to move along the guide groove, imaging adjustment jitter is reduced, and continuous adjustment is achieved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of imaging lenses, and in particular to an imaging focusing device and a focusing camera. Background Art

[0002] Existing infrared optical imaging usually requires the replacement of lenses with different magnifications. For photographing and imaging at different distances and scenes, different positions need to be adjusted to adjust the focal length. The focusing method of traditional optical lenses generally adopts stepper motors. Stepper motors often use lead screws or threads to convert the motor's rotational motion into linear motion. The stepper motor has large vibrations when it is actuated, which affects the focusing accuracy. In addition, the movement continuity of the stepper motor is poor, making the imaging control unstable and requiring repeated adjustments. Summary of the invention

[0003] The invention provides an imaging focusing device and a focusing camera, which can reduce imaging adjustment jitter and realize continuous adjustment.

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

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

[0006] At least two parallel guide posts, the movable part is provided with an axial hole, the movable part is sleeved on the guide posts through the axial hole; the guide posts are used to guide the moving direction of the movable part;

[0007] A mounting bracket, the mounting bracket is used to mount the magnetic linear motor; the mounting bracket comprises a first side wall, a surface of the first side wall is provided with a guide groove, and an extending direction of the guide groove is parallel to the guide column;

[0008] The induction sheet is connected to the movable component, the induction sheet is arranged in the guide groove, and the magnetic linear motor is used to provide an electromagnetic driving force to move the induction sheet along the guide groove.

[0009] Optionally, the shaft hole is arranged on both sides of the imaging unit, and the sensing sheet is arranged on a side of the movable component close to the shaft hole.

[0010] Optionally, the mounting bracket further includes a second side wall and an adjustment rod, and the magnetic linear motor is arranged between the first side wall and the second side wall;

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

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

[0013] Optionally, the imaging focusing device further includes a driving motor, which is drivingly connected to the adjusting rod, and is used to provide adjusting power to adjust the length of the adjusting rod entering between the first side wall and the second side wall.

[0014] In a second aspect, an embodiment of the present invention provides a focusing camera, comprising: a base, a lens, a control unit, and an imaging focusing device according to any embodiment of the present invention;

[0015] The imaging focusing device is arranged on a base; the lens is installed on a 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, a base sleeve is provided on the first surface of the base corresponding to the position of the guide post, and the base sleeve is used to fix one end of the guide post;

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

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

[0020] Optionally, the fixed cover has a third side wall extending toward the base, and the imaging focusing device is located in a space enclosed by the third side wall, or at least the imaging unit is located in the space enclosed by the third side wall;

[0021] When at least the imaging unit is located in the space enclosed by the third side wall, a gap is provided on the third side wall, and the gap is used to provide an escape space.

[0022] Optionally, the control unit is arranged on a side of the fixing cover away from the base.

[0023] The imaging focusing device provided by the embodiment of the present invention guides the moving direction of the movable part by at least two parallel guide columns, and uses a magnetic linear motor to provide an electromagnetic driving force. By adjusting the magnitude of the electromagnetic driving force, the linear distance between the imaging unit and the object can be precisely adjusted. Compared with the lead screw or threaded transmission of the existing driving motor, the jitter can be reduced and continuous adjustment can be achieved. Furthermore, in terms of structure, the sensor sheet is arranged in the guide groove of the first side wall. Therefore, when the sensor sheet is acted upon by the electromagnetic driving force, the sensor sheet can be prevented from jittering and moving offset due to the limitation of the side wall of the guide groove, thereby further reducing the jitter of the movable part, making the movable part move smoothly, and improving the stability of the imaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic cross-sectional structure diagram of an imaging focusing device is provided for an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of a first viewing angle structure of an imaging focusing device is provided for an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of a second viewing angle structure of an imaging focusing device is provided for an embodiment of the present invention;

[0027] Figure 4 A structural schematic diagram of a mounting bracket is provided for an embodiment of the present invention;

[0028] Figure 5 A structural schematic diagram of a movable component is provided for an embodiment of the present invention;

[0029] Figure 6 A schematic diagram of the structure of a driving motor is provided for an embodiment of the present invention;

[0030] Figure 7 A schematic structural diagram of a base is provided for an embodiment of the present invention;

[0031] Figure 8 A structural schematic diagram of a fixing cover is provided in accordance with an embodiment of the present invention.

[0032] Reference numerals Reference numeral name 1 Base 11 Base sleeve 12 Lens mounting boss 2 Active Parts 21 Shaft hole 22 Sensor 23 Imaging unit 3 Magnetic Linear Motor 4 Guide column 5 Fixed cover 51 Fixed cover sleeve 52 The third side wall 53 gap 54 With ears 6 Lenses 7 Drive motor 71 Second turbine 8 Mounting Bracket 81 First worm gear 82 Guide groove 83 Adjustment lever 9 Control unit DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Figure 1 A schematic cross-sectional structure diagram of an imaging focusing device is provided for an embodiment of the present invention. Figure 2 A schematic diagram of a first viewing angle structure of an imaging focusing device is provided for an embodiment of the present invention. Figure 3 A second viewing angle structural diagram of an imaging focusing device is provided in accordance with an embodiment of the present invention. Figure 1-Figure 3 , comprising: a movable component 2, the movable component 2 being connected to the imaging unit 23;

[0035] At least two parallel guide posts 4, the movable part 2 is provided with an axial hole 21, and the movable part 2 is sleeved on the guide posts 4 through the axial hole 21; the guide posts 4 are used to guide the moving direction of the movable part 2;

[0036] The mounting bracket 8 is used to mount the magnetic linear motor 3; the mounting bracket 8 comprises a first side wall, a surface of which is provided with a guide groove 82, and an extending direction of the guide groove 82 is parallel to the guide column 4;

[0037] The induction sheet 22 is connected to the movable component 2 , and the induction sheet 22 is arranged in the guide groove 82 . The magnetic linear motor 3 is used to provide an electromagnetic driving force to move the induction sheet 22 along the guide groove 82 .

[0038] Specifically, the movable component 2 is provided with a through shaft hole 21 , and the guide column 4 passes through the shaft hole 21 , so that the guiding function of the guide column 4 can be utilized to move the movable component 2 along the extension direction of the guide column 4 , thereby limiting the moving direction of the movable component 2 .

[0039] The movable part 2 may be provided with a mounting structure for mounting the imaging unit 23. When the movable part 2 moves, the imaging unit 23 may move with the movable part 2. Exemplarily, the extension direction of the guide post 4 may be parallel to the optical axis of the imaging unit 23. 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 may be changed. Exemplarily, the imaging unit 23 may be an imaging lens or an infrared focal plane detector. Therefore, when adjusting the straight-line distance, the focal length or the position of the imaging plane may be adjusted.

[0040] The mounting bracket 8 is used to mount the magnetic linear motor 3. Figure 4 A schematic diagram of a mounting bracket is provided for an embodiment of the present invention. Figure 4, exemplarily, the mounting bracket 8 may be in a "U" shape, the magnetic linear motor 3 may be arranged in the groove, and the mounting bracket 8 may also be provided with a first side wall on one side of the magnetic linear motor 3, and a guide groove 82 is provided on the surface of the first side wall away from the magnetic linear motor 3, and the guide groove 82 is used to accommodate the induction sheet 22, wherein the extension direction of the guide groove 82 is parallel to the guide column 4. When the magnetic linear motor 3 is working, it can provide an electromagnetic driving force to act on the induction sheet 22, and the induction sheet 22 moves along the guide groove 82, and the induction sheet 22 is connected to the movable component 2, so that the movable component 2 drives the imaging unit 23 to move along the guide column 4. Exemplarily, the induction sheet 22 and the movable component 2 may be an integral structure.

[0041] By controlling the current direction and size of the driving coil in the magnetic linear motor 3, the size and direction of the driving magnetic field can be changed, so that the speed and direction of the sensor plate 22 moving along the guide groove 82 can be adjusted. Therefore, by adjusting the size of the electromagnetic driving force, the linear distance between the imaging unit 23 and the object can be accurately adjusted. Compared with the lead screw or threaded transmission of the existing driving motor, the jitter can be reduced and continuous adjustment can be achieved. Furthermore, the sensor plate 22 is structurally arranged in the guide groove 82 of the first side wall. When the sensor plate 22 is subjected to the electromagnetic driving force, due to the limitation of the side wall of the guide groove 82, the sensor plate 22 can be prevented from jittering and moving offset, thereby further reducing the jitter of the movable component 2, making the movable component 2 move more smoothly, and improving the stability of imaging.

[0042] The imaging focusing device provided in the embodiment of the present invention guides the moving direction of the movable part 2 by at least two parallel guide columns 4, and uses the magnetic linear motor 3 to provide the 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 threaded transmission of the existing driving motor, the jitter can be reduced and continuous adjustment can be achieved. Furthermore, in terms of structure, the sensor sheet 22 is arranged in the guide groove 82 of the first side wall. Therefore, when the sensor sheet 22 is acted upon by the electromagnetic driving force, the sensor sheet 22 can be prevented from jittering and moving offset due to the limitation of the side wall of the guide groove 82, thereby further reducing the jitter of the movable part 2, making the movable part 2 move smoothly, and improving the stability of imaging.

[0043] Figure 5 A schematic diagram of the structure of a movable part is provided for an embodiment of the present invention, see Figure 5 The shaft hole 21 is arranged on both sides of the imaging unit 23 , and the sensing sheet 22 is arranged on one side of the movable component 2 close to the shaft hole 21 .

[0044] Specifically, the axial hole 21 is arranged on both sides of the imaging unit 23, that is, the guide column 4 inserted into the axial hole 21 is also positioned on both sides of the imaging unit 23. Exemplarily, the guide column 4 can be symmetrically arranged based on the imaging unit 23. Therefore, the axial hole 21 on the movable component 2 is also symmetrically arranged based on the imaging unit 23. The imaging unit 23 is arranged between the axial holes 21, which can reduce the impact on the center of gravity of the movable component 2 after the imaging unit 23 is installed. Since the center of gravity is stable or centered, the stability of the movable component 2 during movement can be further improved.

[0045] The sensing piece 22 can be arranged at one end of the movable part 2, that is, the sensing piece 22 is arranged at the end of the movable part 2, and a group of magnetic linear motors 3 can be used to realize unilateral drive, thereby reducing the occupation of light transmission space such as the lens and the imaging unit 23, and facilitating the overall layout of various devices. Since the sensing piece 22 is arranged at one end of the movable part 2, at the moment of being subjected to the electromagnetic driving force, the acceleration of the end subjected to the driving force is relatively large. In order to avoid the jitter and offset caused by the different acceleration processes at the two ends, the sensing piece 22 can be arranged on the side of the movable part 2 close to the shaft hole 21, so that when the electromagnetic driving force acts on the sensing piece 22, the movable part 2 can be directly driven to move along the guide column 4, thereby avoiding the movable part 2 from tilting relative to the guide column 4, causing the problem of jitter and offset, and further improving the movement stability of the movable part 2.

[0046] In some embodiments, the position of the induction sheet 22 can also be set at the two symmetrical ends of the movable part 2, and the magnetic linear motors 3 are respectively set accordingly. That is, two sets of magnetic linear motors 3 can be used to achieve bilateral drive, thereby improving the movement stability of the movable part 2.

[0047] Continue to see Figure 4 , Optionally, the mounting bracket 8 further includes a second side wall and an adjusting rod 83, and the magnetic linear motor 3 is arranged between the first side wall and the second side wall;

[0048] The second side wall is provided with a through hole, and the adjustment rod 83 passes through the through hole. By adjusting the adjustment rod 83 to enter the length dimension between the first side wall and the second side wall, the flatness of the magnetic linear motor 3 and the gap distance between the magnetic linear motor 3 and the first side wall can be adjusted.

[0049] Specifically, the first side wall and the second side wall cooperate with the bottom wall to form a U-shaped structure, and the U-shaped space can accommodate the magnetic linear motor 3. The inner wall of the through hole of the second side wall can be provided with an internal thread, and the corresponding side wall of the adjustment rod 83 can also be adapted to the corresponding thread, so by rotating the adjustment rod 83, the length of the adjustment rod 83 extending along the through hole into the space between the first side wall and the second side wall can be adjusted. Therefore, the space between the first side wall and the second side wall can be slightly larger than the width of the magnetic linear motor 3, so as to facilitate the installation of the magnetic linear motor 3.

[0050] The installation position of the magnetic linear motor 3 can be adjusted by rotating the adjustment rod 83. Exemplarily, the side of the adjustment rod 83 close to the magnetic linear motor 3 can be a flat surface, so when the length of the adjustment rod 83 extending between the first side wall and the second side wall increases, the flat surface of the adjustment rod 83 fits with the magnetic linear motor 3, which can improve the setting flatness of the magnetic linear motor 3, avoid the inclination of the installation position of the magnetic linear motor 3, cause the deviation of the electromagnetic driving force, and affect the smooth movement of the movable part 2.

[0051] And by adjusting the length of the adjustment rod 83 extending between the first side wall and the second side wall, 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 induction sheet 22 can be adjusted, so that the relative position of the magnetic linear motor 3 and the induction sheet 22 can be adjusted. For example, when the gap distance between the magnetic linear motor 3 and the induction sheet 22 is large, the electromagnetic driving force of the magnetic linear motor 3 acting on the induction sheet 22 will be smaller than the actual output. When the gap distance between the magnetic linear motor 3 and the induction sheet 22 is small, the electromagnetic driving force of the magnetic linear motor 3 acting on the induction sheet 22 will be larger than the actual output, thereby affecting the accuracy of the movement control of the movable part 2. By adjusting the length of the adjustment rod 83 extending between the first side wall and the second side wall, the gap distance between the magnetic linear motor 3 and the induction sheet 22 can be adjusted, and the accuracy of the electromagnetic driving force of the magnetic linear motor 3 acting on the induction sheet 22 can be improved, thereby ensuring that the movable part 2 can obtain a stable and continuous force.

[0052] Optionally, one end of the adjustment rod 83 close to the magnetic linear motor 3 is connected to the surface of the magnetic linear motor 3. Specifically, the connection between the adjustment rod 83 and the magnetic linear motor 3 can be a bonding of an adhesive material, or a magnetic connection of a magnetic material. Therefore, when the length of the adjustment rod 83 extending between the first side wall and the second side wall is reduced, the adjustment rod 83 can drive the magnetic linear motor 3, thereby increasing the gap distance between the magnetic linear motor 3 and the induction sheet 22. Therefore, the position of the magnetic linear motor 3 can be adjusted in two directions, thereby improving the accuracy of the electromagnetic driving force of the magnetic linear motor 3 acting on the induction sheet 22.

[0053] Figure 6 A schematic diagram of a drive motor is provided in accordance with an embodiment of the present invention. Figure 3 See also Figure 6 Optionally, the imaging focusing device also includes a driving motor 7, which is transmission-connected to the adjusting rod 83, and the driving motor 7 is used to provide adjustment power to adjust the length of the adjusting rod 83 entering between the first side wall and the second side wall.

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

[0055] Continue to see Figure 1-Figure 3 , an embodiment of the present invention further provides a focusing camera, comprising: a base 1, a lens 6, a control unit 9 and an imaging focusing device according to any embodiment of the present invention;

[0056] The imaging focusing device is arranged on the base 1; a lens 6 is installed 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 is used to control the magnitude and direction of the electromagnetic driving force of the magnetic linear motor 3 .

[0058] Specifically, the base 1 is a bearing platform for the imaging focusing device, one side of the base 1 is used to install the imaging focusing device, and the other side of the base 1 is used to install 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 component 2 moves along the extension direction of the guide column 4, the straight-line distance between the imaging unit 23 and the object can be changed. Exemplarily, the imaging unit 23 can be an imaging lens or an infrared focal plane detector. Therefore, when adjusting the straight-line distance, the focal length or the position of the imaging plane can be adjusted.

[0059] The sensing sheet 22 is arranged in the guide groove 82. When the sensing sheet 22 is acted upon by the electromagnetic driving force, it will move along the guide groove 82, so that the movable part 2 drives the imaging unit 23 to move along the guide column 4. During operation, the control unit 9 controls the direction and magnitude of the electromagnetic driving force output by the magnetic linear motor 3 to act on the sensing sheet 22, so that the speed and direction of the sensing sheet 22 moving along the guide groove 82 can be adjusted. Therefore, the precise adjustment of the linear distance between the imaging unit 23 and the object can be achieved. Compared with the screw or thread transmission of the existing drive motor 7, the jitter can be reduced and continuous adjustment can be achieved. Further, the sensing sheet 22 is structurally arranged in the guide groove 82 of the first side wall. When the sensing sheet 22 is acted upon by the electromagnetic driving force, due to the limitation of the side wall of the guide groove 82, the sensing sheet 22 can be prevented from jittering and moving offset, thereby further reducing the jitter of the movable part 2, making the movable part 2 move more smoothly, and improving the stability of imaging.

[0060] Figure 7 A schematic diagram of a base structure is provided for an embodiment of the present invention, see Figure 7 The first surface of the base 1 is provided with a base sleeve 11 corresponding to the position of the guide column 4, and the base sleeve 11 is used to fix one end of the guide column 4; the second surface of the base 1 is provided with a lens mounting boss 12, and the lens mounting boss 12 is used to mount the lens 6. The first surface and the second surface are relative surfaces.

[0061] Specifically, the guide column 4 can be installed correspondingly according to the distribution of the base sleeve 11 on the first surface of the base 1, so as to improve the stability of the guide column 4 and avoid the shaking of the guide column 4 when the movable 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, and the lens 6 can be rotatably mounted on one side of the base 1 through the lens mounting boss 12, so as to facilitate the replacement and application of different lenses 6.

[0062] Figure 8 A structural diagram of a fixed cover is provided for an embodiment of the present invention, see Figure 8 , focusing camera, also includes a fixed cover 5; the fixed cover 5 is arranged on the side of the imaging focusing device away from the base 1; the surface of the fixed cover 5 is provided with a fixed cover sleeve 51 corresponding to the position of the guide column 4; the fixed cover sleeve 51 and the base sleeve 11 fix the guide column 4; the vertical projection of the fixed cover 5 on the base 1 at least covers the imaging unit 23.

[0063] Specifically, the fixed cover sleeve 51 on the surface of the fixed cover 5 can cooperate with the base sleeve 11 of the base 1 to fix the guide column 4, further avoiding the shaking effect of the guide column 4 when the movable part 2 moves. The vertical projection of the fixed cover 5 on the base 1 at least covers the imaging unit 23, that is, the fixed cover 5 is arranged above the imaging unit 23, so as to play a light shielding role, and avoid the external light source directly irradiating the imaging unit 23 or the lens 6, resulting in unclear or inaccurate images.

[0064] Optionally, the fixed cover 5 has a third side wall 52 extending toward the base 1, and the imaging focusing device is located in the space enclosed by the third side wall 52. Specifically, the third side wall 52 encloses an enclosed space, which can be covered on the imaging focusing device, can provide a better shading effect, and protect the imaging focusing device.

[0065] In some embodiments, see Figure 2 and Figure 3 Optionally, at least the imaging unit 23 is located in the space enclosed by the third side wall 52; that is, the third side wall 52 encloses the enclosed space and the cover is arranged on the imaging unit 23, which can provide light shielding for the imaging unit 23 and play a protective role. In addition, it is convenient to maintain, replace and adjust the components such as the magnetic linear motor 3 and the drive motor 7. It improves the convenience of use and can reduce the size of the focusing camera.

[0066] Optionally, when at least the imaging unit 23 is located in the space enclosed by the third side wall 52, since the vertical projection of the fixed cover 5 on the base 1 at least covers the imaging unit 23, the surface area of ​​the fixed cover 5 will also be reduced, thereby affecting the installation space of the fixed sleeve. Therefore, the surface of the fixed cover 5 can be extended outward to form an attached ear portion 54, and a corresponding fixed sleeve can be provided on the attached ear portion 54 to avoid affecting the spatial distribution of the guide column 4. Furthermore, the third side wall 52 will affect some spatial structures of the imaging focusing device. Therefore, a notch 53 can be provided corresponding to the conflicting position on the third side wall 52, and the notch 53 is used to provide an avoidance space. For example, see Figure 2 and Figure 3 The extending direction of the notch 53 along its length is parallel to the guide column 4 , so that the notch 53 is utilized to avoid the moving position of the movable component 2 .

[0067] Based on the above embodiment, 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 the corresponding software algorithm, and use the magnetic linear motor 3 to provide an 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 accurately adjusted. The control unit 9 can be connected to the drive motor 7, and the control unit 9 is used to control the working parameters of the drive motor 7. For example, the speed, rotation direction, working time, etc., so as to adjust the setting flatness of the magnetic linear motor 3 and the gap distance between the magnetic linear motor 3 and the induction sheet 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 aimed at the object, the control unit 9 can face the use side 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, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions 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 connected to the imaging unit; At least two parallel guide posts, the movable part is provided with an axial hole, the movable part is sleeved on the guide posts through the axial hole; the guide posts are used to guide the moving direction of the movable part; A mounting bracket, the mounting bracket is used to mount the magnetic linear motor; the mounting bracket comprises a first side wall, a surface of the first side wall is provided with a guide groove, and an extending direction of the guide groove is parallel to the guide column; The induction sheet is connected to the movable component, the induction sheet is arranged in the guide groove, and the magnetic linear motor is used to provide an electromagnetic driving force to move the induction sheet along the guide groove.

2. The imaging focusing device according to claim 1, characterized in that: The shaft hole is arranged on both sides of the imaging unit, and the sensing sheet is arranged on one side of the movable component close to the shaft hole.

3. The imaging focusing device according to claim 1, characterized in that: The mounting bracket further comprises a second side wall and an adjustment rod, and the magnetic linear motor is arranged between the first side wall and the second side wall; The second side wall is provided with a through hole, and the adjustment rod passes through the through hole. By adjusting the length of the adjustment rod entering between the first side wall and the second side wall, the flatness of the magnetic linear motor and the gap distance between the magnetic linear motor and the first side wall can be adjusted.

4. The imaging focusing device according to claim 3, characterized in that: One end of the adjustment rod close to the magnetic linear motor is connected to the surface of the magnetic linear motor.

5. The imaging focusing device according to any one of claims 3 to 4, characterized in that: It also includes a driving motor, which is drivingly connected to the adjusting rod, and is used to provide adjusting power to adjust the length of the adjusting rod entering between the first side wall and the second side wall.

6. A focusing camera, characterized in that: include: A base, a lens, a control unit and an imaging focusing device according to any one of claims 1 to 5; The imaging focusing device is arranged on the base; The lens is installed on a 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.

7. The focus camera according to claim 6, characterized in that: The first surface of the base is provided with a base sleeve corresponding to the position of the guide column, and the base sleeve is used to fix one end of the guide column; A lens mounting boss is provided on the second surface of the base, and the lens mounting boss is used to mount the lens. The first surface and the second surface are opposite surfaces.

8. The focus camera according to claim 7, characterized in that: It also includes a fixed cover; the fixed cover is arranged on the side of the imaging focusing device away from the base; the surface of the fixed cover is provided with a fixed cover sleeve corresponding to the position of the guide column; the fixed cover sleeve and the base sleeve fix the guide column; the vertical projection of the fixed cover on the base at least covers the imaging unit.

9. The focus camera according to claim 8, characterized in that: The fixed cover has a third side wall extending toward the base, and the imaging focusing device is located in the space enclosed by the third side wall, or at least the imaging unit is located in the space enclosed by the third side wall; When at least the imaging unit is located in the space enclosed by the third side wall, a gap is provided on the third side wall, and the gap is used to provide an escape space.

10. The focus camera according to any one of claims 8 to 9, characterized in that: The control unit is arranged on a side of the fixing cover away from the base.

Images