Linear clamping drive mechanism

Abstract

This invention provides a linear clamping drive mechanism for driving a rotatable ring of a camera lens to rotate. The mechanism includes a base, a drive unit, a driven unit, and a clamping unit, wherein the rotatable ring can be a focus ring or a zoom ring. The camera is fixed to the base, while the drive unit and driven unit are slidably disposed on the base and located on opposite sides of the lens. The drive unit includes at least one drive wheel, and the driven unit includes at least one idler wheel. The clamping unit is disposed on the base and drives the drive unit and driven unit to move synchronously toward the lens, so that the drive wheel and idler wheel abut against the rotatable ring from different directions. When the drive unit drives the rotatable ring to rotate via the drive wheel, the idler wheel rotates with the rotatable ring.

Description

Technical Field

[0001] This invention relates to a driving mechanism, and more particularly to a linear clamp driving mechanism with a linear clamp for a rotatable ring on a camera lens. Background Technology

[0002] Image quality is heavily influenced by light intensity and also depends on proper camera focusing. Most digital single-lens reflex (DSLR) cameras and mirrorless interchangeable-lens cameras (MILCs) on the market today, while supporting autofocus, also offer manual focus, allowing users to adjust the focus position by rotating the focus ring. For zoom lenses, users can further adjust the focal length range before shooting by rotating the zoom ring, adjusting the camera's angle of view without changing the shooting distance. Currently, some camera stabilizers and robotic arms on the market are equipped with automatic zoom and / or focusing mechanisms, allowing users to focus and / or adjust the lens without physical contact.

[0003] Figure 1 A schematic diagram of an automatic zoom mechanism in the prior art is shown. Please refer to... Figure 1 As shown, in this prior art, the camera 10 is locked to the base 20, and the zoom mechanism 30 is locked to a round bar 21 on the base 20, with its gear 31 meshing with a toothed ring 32 fitted onto the zoom ring of the lens 11. Therefore, the zoom mechanism 30 can drive the zoom ring of the lens 11 to rotate via the engagement of the gear 31 and the toothed ring 32. In this prior art, because the zoom mechanism 30 can swing around the round bar 21, it can be used with lenses 11 of various diameters. However, this design is prone to causing the lens 11 and / or the zoom mechanism 30 to deflect due to reaction forces, resulting in the gear 31 and the toothed ring 32 slipping off and requiring reinstallation.

[0004] Another driving method, as shown in Taiwan Patent No. 1373685, involves placing a collar on the lens and fixing it to a large gear, while a small gear meshes with the large gear and is driven to rotate by a motor, thus achieving the purpose of motor-driven lens extension and retraction. However, this design cannot accommodate lenses of various diameters using a single-sized collar and large gear. Therefore, there is an urgent need for a zoom / focus drive mechanism that does not cause lens deflection and can be used with lenses of various sizes. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to provide a linear clamping drive mechanism for a rotatable ring of a camera lens, which can be used with camera lenses of various sizes and maintains the stability of the camera lens with a uniform clamping force when driving the rotatable ring of the camera lens to rotate.

[0006] This invention provides a linear clamping drive mechanism for driving a rotatable ring of a camera lens to rotate, wherein the rotatable ring can be a focus ring or a zoom ring. The linear clamping drive mechanism comprises a base, a drive unit, a driven unit, and a clamping unit. The camera is fixed to the base, while the drive unit and driven unit are slidably disposed on the base and located on opposite sides of the lens. The drive unit includes at least one drive wheel, and the driven unit includes at least one idler wheel. The clamping unit is disposed on the base and drives the drive unit and driven unit to move synchronously toward the lens, so that the drive wheel and idler wheel abut against the rotatable ring from different directions, wherein when the drive unit drives the rotatable ring to rotate via the drive wheel, the idler wheel rotates with the rotatable ring.

[0007] In one embodiment of the invention, the base includes a fixing member and a sliding member. A driving unit and a driven unit are slidably disposed on the fixing member, and a clamping unit is disposed on the fixing member. The sliding member is slidably disposed on the fixing member, and the camera is fixed to the sliding member. One of the fixing member and the sliding member has at least one guide portion, while the other has at least one sliding portion. The camera can slide relative to the fixing member along at least one of the following directions: an axial direction of the lens, a radial direction of the lens, and a transverse direction perpendicular to the axial and radial directions, via the cooperation of the guide portion and the sliding portion. In a specific embodiment of the invention, the fixing member may be a sealing plate and may have a mounting surface and a circular hole penetrating the mounting surface. The lens can be aligned with the circular hole, and the sliding member, driving unit, driven unit, and clamping unit can be disposed on the mounting surface around the circular hole. Furthermore, in another specific embodiment of the invention, the guide portion and the sliding portion are, for example, a combination of at least one of a linear guide rod mechanism, a lead screw mechanism, a linear slide rail mechanism, and a rack and pinion system.

[0008] In one embodiment of the present invention, the driving unit and the driven unit described above are respectively slidably mounted on the base by at least one of a linear guide rod mechanism, a lead screw mechanism, a linear slide rail mechanism, and a rack and gear set.

[0009] In one embodiment of the present invention, the drive unit includes a connector and a motor. The connector is slidably mounted on the base, and a drive wheel is disposed on the side of the connector facing the lens. A clamping unit is used to synchronously drive the connector and the driven unit to move towards the lens, while the motor is connected to the drive wheel to drive a rotatable ring to rotate via the drive wheel.

[0010] In one embodiment of the present invention, there are multiple drive wheels, and the drive unit further includes a connector, a timing belt, and a motor. The connector is slidably mounted on the base, and at least one of the drive wheels is located on the side of the connector facing the lens. A clamping unit is used to synchronously drive the connector and the driven unit to move towards the lens, while the timing belt is sleeved on the drive wheels, and the motor is connected to one of the drive wheels to drive a rotatable ring to rotate via the timing belt and the drive wheels.

[0011] In one embodiment of the present invention, the driven unit further includes a connector slidably disposed on the base, and an idler wheel is disposed on the side of the connector facing the lens, and the clamping unit is used to synchronously drive the drive unit and the connector to move toward the lens.

[0012] In one embodiment of the present invention, there are multiple idler wheels, and the driven unit further includes a connector and a timing belt. The connector is slidably mounted on the base, and at least one of the idler wheels is located on the side of the connector facing the lens. A clamping unit is used to synchronously drive the drive unit and the connector to move towards the lens, and the timing belt is fitted onto these idler wheels.

[0013] In one embodiment of the present invention, the aforementioned driven unit further includes an encoder connected to the idler wheel for calculating the number of rotations of the rotatable ring.

[0014] In one embodiment of the present invention, the drive wheel and idler wheel are respectively a rubber wheel, a gear, or a combination thereof.

[0015] In one embodiment of the present invention, the drive wheel and the idler wheel are each a rubber wheel, and the surface of the rubber wheel facing the rotatable ring has textures.

[0016] In one embodiment of the present invention, the clamping unit is composed of at least one of a linear guide rod mechanism, a lead screw mechanism, a linear slide rail mechanism, and a rack and gear set.

[0017] In one embodiment of the present invention, the clamping unit described above is driven by a motor to drive the driving unit and the driven unit to move synchronously toward the lens.

[0018] In one embodiment of the present invention, the clamping unit includes a guide screw, a first nut, and a second nut. The guide screw has a first thread and a second thread, with the first and second threads having opposite spiral directions. The first nut engages with the first thread, and a drive unit is connected to the first nut. The second nut engages with the second thread, and a driven unit is connected to the second nut. When the guide screw rotates, the first and second nuts drive the drive unit and the driven unit to move synchronously toward the lens. In a specific embodiment of the present invention, the guide screw may further have a handle, which may be disposed between the first and second threads. In another specific embodiment of the present invention, the guide screw may further have a handle, and one of the first and second threads may be disposed between the other of the first and second threads and the handle.

[0019] In one embodiment of the present invention, the linear clamping drive mechanism further includes at least one first elastic member and at least one second elastic member. The first elastic member is disposed between the drive unit and the clamping unit, while the second elastic member is disposed between the driven unit and the clamping unit.

[0020] In one embodiment of the present invention, the linear clamping drive mechanism further includes a camera tilt adjustment unit disposed on the base, which includes at least one side plate, at least one rotating shaft, and another drive unit. The side plate is connected to one side of the base, and the rotating shaft is connected to the side plate, while the other drive unit is used to drive the rotating shaft, thereby causing the side plate and the base to rotate around the rotating shaft to adjust a tilt angle of the camera. In a specific embodiment of the present invention, the other drive unit uses a motor to drive the side plate and the base to rotate around the rotating shaft via a gear set, a timing belt set, or a combination thereof.

[0021] Based on the above, the clamping unit of the present invention drives the driving unit and the driven unit to move synchronously toward the lens, so that the driving wheel and the idler wheel abut against the rotatable ring from different directions. Therefore, when the driving unit drives the rotatable ring to rotate via the driving wheel, the idler wheel will stably abut against the rotatable ring from another direction to prevent the lens from deflecting.

[0022] To make the above features and advantages of the present invention more apparent and understandable, several embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] Figure 1A schematic diagram of an automatic zoom mechanism in the prior art is shown.

[0024] Figure 2 A schematic diagram illustrating the usage state of a linear clamping drive mechanism according to an embodiment of the present invention is shown.

[0025] Figure 3 for Figure 2 The top view of the linear clamping drive mechanism shown.

[0026] Figure 4 for Figure 2 A sectional view along line AA.

[0027] Figure 5 A schematic diagram of a linear clamping drive mechanism according to another embodiment of the present invention is shown.

[0028] Figure 6 A schematic diagram of a linear clamping drive mechanism according to another embodiment of the present invention is shown.

[0029] Reference numerals in the attached figures: 10-Camera; 11-Lens; 20-Base; 21-Round bar; 30-Zoom mechanism; 31-Gear; 32-Gear ring; 100-Linear clamping drive mechanism; 110-Base; 112-Through hole; 114-Slide groove; 120-Drive unit; 122-Drive wheel; 130-Driven unit; 132-Idler wheel; 140-Clamping unit; 142, 144-Rack; 146-Gear; 148-Hand screw; 149-Arrow; 200-Camera; 210-Lens; 212-Rotating ring; 300-Base; 310-Fixed component; 312-Mounting surface; 314-Round hole; 320-Sliding component; 32 2. 324 - Slider; 326 - Quick-release plate; 400 - Drive unit; 410 - Connector; 412 - Connecting plate; 420 - Drive wheel; 430 - Motor; 500 - Driven unit; 510 - Connector; 512 - Connecting plate; 520 - Idler wheel; 530 - Encoder; 600 - Clamping unit; 610 - Handle; 620, 630 - Lead screw; 640, 650 - Nut; 660, 670 - Elastic element; 700 - Camera tilt adjustment unit; 710, 720 - Side plate; 730, 740 - Shaft; 750 - Drive unit; 752 - Motor; 754, 756 - Gear; 758 - Timing belt; 800 - Camera. Detailed Implementation

[0030] Figure 2 A schematic diagram illustrating the usage state of a linear clamping drive mechanism according to an embodiment of the present invention is shown. Figure 3 for Figure 2 The top view of the linear clamping drive mechanism shown is shown. Figure 4Then it is Figure 2 Sectional view along line AA. Please refer to this as well. Figures 2 to 4 As shown, the linear clamping drive mechanism 100 is composed of a base 110, a drive unit 120, a driven unit 130, and a clamping unit 140, used to drive a rotatable ring 212 of a lens 210 of a camera 200 to rotate. In this embodiment, as... Figure 4 The lens 210 shown is, for example, a zoom lens, and therefore has both a focus ring and a zoom ring 212 that can be rotated. However, in other embodiments not shown, the lens may also be a fixed-focus lens, and the rotating ring may be a focus ring.

[0031] Furthermore, the camera 200 is fixed on the base 110, while the drive unit 120 and the driven unit 130 are slidably mounted on the base 110 and located on opposite sides of the lens 210. Additionally, the drive unit 120 includes at least one drive wheel 122, and the driven unit 130 includes at least one idler wheel 132. Furthermore, a clamping unit 140 is disposed on the base 110 to drive the drive unit 120 and the driven unit 130 to move synchronously toward the lens 210, so that the drive wheel 122 and the idler wheel 132 abut against the rotatable ring 212 from different directions with a uniform clamping force. Moreover, when the drive unit 120 drives the rotatable ring 212 to rotate via the drive wheel 122, the idler wheel 132 rotates with the rotatable ring 212. Therefore, the linear clamping drive mechanism 100 of the present invention can be used with lenses 210 of various sizes without causing lens 210 deflection.

[0032] More specifically, in this embodiment, the base 110 may have a through hole 112, and the camera 200 may be secured to the base 110 using a screw (not shown) passing through the through hole 112. Furthermore, the base 110 may also have a groove 114, and the clamping unit 140 may be composed of two racks 142 and 144 disposed in the groove 114, a gear 146 meshing between the racks 142 and 144, and a hand-tightening screw 148 connected to the gear 146. The drive unit 120 may be disposed in the groove 114 via the rack 142, and the driven unit 130 may be disposed in the groove 114 via the rack 144. Therefore, when the user turns the hand screw 148 clockwise, the gear 146 rotates in the direction of arrow 149, and drives the drive unit 120 and the driven unit 130 to move synchronously toward the lens 210 via the racks 142 and 144, so that the drive wheel 122 and the idler wheel 132 abut against the rotatable ring 212 from different directions. Conversely, when the user turns the hand screw 148 counterclockwise, the gear 146 drives the drive unit 120 and the driven unit 130 to move synchronously away from the lens 210 via the racks 142 and 144, so that the drive wheel 122 and the idler wheel 132 release the rotatable ring 212.

[0033] In addition, in other embodiments not shown, the driving unit and the driven unit may be slidably mounted on the base by at least one of a linear guide rod mechanism, a lead screw mechanism, a linear slide rail mechanism, and a rack and gear set. Furthermore, in this embodiment, the drive wheel 122 that drives the rotatable ring 212 is directly driven by the motor (not shown) of the driving unit 120. However, in other embodiments not shown, the driving unit may also be composed of multiple drive wheels and a motor connected to one of these drive wheels. In this case, the drive wheel that drives the rotatable ring can be indirectly driven by the motor. Moreover, the aforementioned drive wheel can be a rubber wheel, a gear, or a combination thereof. For example, the motor can directly drive a rubber wheel to rotate, and this rubber wheel can then drive other rubber wheels against the rotatable ring to rotate through friction or a timing belt. Alternatively, the motor can directly drive a gear to rotate, and this gear can mesh with a gear ring fitted on the rotatable ring, mesh with other gears against the rotatable ring, or be connected to other gears against the rotatable ring via a timing belt.

[0034] Figure 5 A schematic diagram of a linear clamping drive mechanism according to another embodiment of the present invention is shown. Please refer to... Figure 5As shown, in this embodiment, the base 300 may be composed of a fixing member 310 and a sliding member 320, wherein the fixing member 310 and the sliding member 320 may each have at least one guide portion and at least one sliding portion, so that the sliding member 320 can slide relative to the fixing member 310. For example, the fixing member 310 may be a sealing plate, and may have a mounting surface 312 and a circular hole 314 penetrating the mounting surface 312. Furthermore, the sliding member 320 may be composed of two sliders 322 and 324 and a quick-release plate 326. The slider 322 is slidably mounted on the mounting surface 312 via a linear guide rod mechanism composed of a guide rod and a guide hole, and is located below the circular hole 314. The slider 324 is also slidably mounted on the slider 322 via a linear guide rod mechanism composed of a guide rod and a guide hole. The quick-release plate 326 is slidably mounted on the slider 324 via a linear slide rail mechanism composed of a rib and a groove. Furthermore, the camera can be fixed on the quick-release plate 326, and the lens can be aligned with the circular hole 314. Therefore, the camera can slide back and forth along the lens axis with the slider 322, slide up and down along the lens radially with the slider 324, and slide left and right along the lens laterally with the quick-release plate 326. However, in other embodiments not shown, the guide and sliding parts may also be composed of at least one of a linear guide rod mechanism, a lead screw mechanism, a linear slide rail mechanism, and a rack and pinion system.

[0035] Furthermore, the drive unit 400 is, for example, disposed on the mounting surface 312, and can be composed of a connector 410, three drive wheels 420 disposed between two connecting plates 412 of the connector 410, a timing belt (not shown), and a motor 430 disposed on the side of the connector 410 away from the mounting surface 312 (for example, disposed on the connecting plate 412 away from the mounting surface 312). The connector 410 is slidably mounted on the left side of the circular hole 314 via a linear guide rod mechanism composed of a guide rod and a guide hole. Two of these drive wheels 420 are, for example, timing belt pulleys composed of a coaxial gear and a rubber wheel, respectively, and are disposed on the side of the connector 410 facing the circular hole 314, while the other of these drive wheels 420 is a gear connected to the shaft of the motor 430, and the timing belt is sleeved on the gear of these drive wheels 420. Therefore, the motor 430 can drive these drive wheels 420 to rotate synchronously via the timing belt. Furthermore, the surface of the rubber wheel of these drive wheels 420 may have grooves to increase the friction when the rubber wheel drives the rotatable ring to rotate.

[0036] Additionally, the driven unit 500 is also disposed on the mounting surface 312, and can be composed of a connector 510, three idler pulleys 520 disposed between the two connecting plates 512 of the connector 510, a timing belt (not shown), and an encoder 530 disposed on the side of the connector 510 away from the mounting surface 312 (for example, on the connecting plate 512 away from the mounting surface 312). The connector 510 is slidably mounted on the right side of the circular hole 314 via a linear guide rod mechanism composed of a guide rod and a guide hole. Two of these idler pulleys 520 are, for example, timing belt pulleys composed of a coaxial gear and a rubber wheel, respectively, and are disposed on the side of the connector 510 facing the circular hole 314. The other idler pulley 520 is a gear connected to the shaft of the encoder 530, and the timing belt is sleeved on the gear of these idler pulleys 520. Therefore, these idler pulleys 520 can rotate synchronously by the drive of the timing belt. Furthermore, the surface of the rubber wheel of these idler wheels 520 can be grooved to increase the friction when the rubber wheel drives the rotatable ring to rotate.

[0037] In addition, the clamping unit 600 is also disposed on the mounting surface 312, and can be composed of a handle 610, two lead screws 620 and 630, and two nuts 640 and 650. In this embodiment, the handle 610 is disposed above the circular hole 314, for example. Furthermore, the lead screw 620 and the nut 640 can be locked to the left side of the handle 610 and have right-hand threads, and the drive unit 400 can be connected to the nut 640. In addition, the lead screw 630 and the nut 650 can be locked to the right side of the handle 610 and have left-hand threads, and the driven unit 500 can be connected to the nut 650. Therefore, when the user turns the handle 610 upward, the nuts 640 and 650 will move synchronously toward the handle 610 along the lead screws 620 and 630 respectively, so as to drive the drive unit 400 and the driven unit 500 to move synchronously toward the lens, thereby causing the drive wheel 420 and the idler wheel 520 to abut against the rotatable ring from different directions.

[0038] In this way, when the motor 430 drives the camera's rotatable ring to rotate via the rubber wheel of the drive wheel 420, the rubber wheels of the two idler wheels 520 facing the circular hole 314 will stably abut against the rotatable ring from another direction to prevent lens deflection. Moreover, these two idler wheels 520 will also rotate with the rotatable ring, and through the cooperation of their gears and timing belt, synchronously drive the idler wheel 520 connected to the encoder 530 to rotate, so that the encoder 530 can calculate the number of rotations of the rotatable ring. Conversely, when the user turns the handle 610 downwards, the nuts 640 and 650 will synchronously move away from the handle 610 along the guide screws 620 and 630, and drive the drive unit 400 and the driven unit 500 to synchronously move away from the lens in different directions.

[0039] However, in other embodiments not shown, the clamping unit may also consist of only a handle, a lead screw, and two nuts. The left side of the lead screw and one of the nuts has a right-hand thread, while the right side of the lead screw and the other nut has a left-hand thread. The handle may be positioned to the left of the right-hand thread, to the right of the left-hand thread, or between the right-hand and left-hand threads. In other words, the handle 610 can not only... Figure 5 The clamping unit 600 is positioned between the driving unit 400 and the driven unit 500, but it can also be positioned to the left of the nut 640 or to the right of the nut 650. In this embodiment, the clamping unit 600 is, for example, composed of a linear guide rod mechanism. However, in other embodiments not shown, the clamping unit can also be composed of at least one of a linear guide rod mechanism, a lead screw mechanism, a linear slide rail mechanism, and a rack and pinion system. Furthermore, in this embodiment, the clamping unit 600 is manually driven, but in other embodiments not shown, the clamping unit can also be driven by a motor.

[0040] Furthermore, in this embodiment, the clamping unit 600 may further include elastic elements 660 and 670. The driving unit 400 is slidably disposed between the two limiting ends of the nut 640, while the elastic element 660 is sleeved on the nut 640 and located between the left limiting end of the nut 640 and the driving unit 400. Furthermore, the driven unit 500 is slidably disposed between the two limiting ends of the nut 650, while the elastic element 670 is sleeved on the nut 640 and located between the right limiting end of the nut 650 and the driven unit 500. Therefore, if the user continues to rotate the handle 610 upwards after the drive wheel 420 and idler wheel 520 abut against the rotatable ring to drive the nuts 640 and 650 to move synchronously toward the handle 610, the elastic elements 660 and 670 will be compressed to prevent the lens from being damaged due to excessive clamping force.

[0041] Figure 6 A schematic diagram of a linear clamping drive mechanism according to another embodiment of the present invention is shown. This embodiment is similar to the previous embodiment, except that the linear clamping drive mechanism of this embodiment may further include a camera tilt adjustment unit 700 disposed on the base 300. Please refer to... Figure 6 As shown, the camera tilt adjustment unit 700 is, for example, composed of two side plates 710 and 720, two rotating shafts 730 and 740, and a drive unit 750. The side plates 710 and 720 are connected to the left and right sides of the base 300, respectively, while the rotating shafts 730 and 740 are connected to the side plates 710 and 720, respectively, and the axes of the rotating shafts 730 and 740 can be perpendicular to the center line of the circular hole 314.

[0042] Furthermore, the drive unit 750 is, for example, composed of a motor 752, two gears 754 and 756, and a timing belt 758. The motor 752 is mounted inside the side plate 710, the gear 754 is connected to the shaft of the motor 752, the gear 756 is rotatably mounted on the shaft 730 and connected to the outer casing (not shown), and the timing belt 758 is mounted on the gears 754 and 756. Therefore, the motor 752 can drive the gear 756 to rotate around the shaft 730 via the gears 754 and the timing belt 758, thereby causing the side plates 710 and 720, the base 300, and the camera 800 mounted on the base 300 to swing up and down around the shafts 730 and 740 to adjust the tilt angle of the camera 800. It is worth noting that in this embodiment, the drive unit is, for example, composed of a motor and a gear set. However, in other embodiments not shown, gear sets, timing belt sets, or combinations thereof may be used instead of the gear set in this embodiment.

[0043] In summary, since this invention utilizes a clamping unit to drive the driving unit and the driven unit to move synchronously toward the lens, so that the driving wheel and the idler wheel abut against the rotatable ring from different directions, the linear clamping drive mechanism of this invention can be used with lenses of various sizes. Furthermore, when the driving unit drives the rotatable ring to rotate via the driving wheel, the idler wheel stably abuts against the rotatable ring from another direction to prevent lens deflection. Moreover, this invention can further incorporate elastic elements between the clamping unit and the driving unit, and between the clamping unit and the driven unit. In this way, if the user continues to rotate the handle after the driving wheel and idler wheel have abutted against the rotatable ring, the elastic elements will be compressed to prevent damage to the lens due to excessive clamping force.

[0044] The above description is illustrative only and not restrictive of the present invention. Those skilled in the art will understand that many modifications, variations or equivalents can be made without departing from the spirit and scope defined by the claims, and all such modifications, variations or equivalents will fall within the protection scope of the present invention.

Claims

1. A linear clamping drive mechanism for driving a rotatable ring of a lens of a camera to rotate, characterized in that, include: A base on which the camera is fixed; A drive unit is slidably mounted on the base and includes at least one drive wheel; A driven unit is slidably mounted on the base and includes at least one idler wheel, wherein the driving unit and the driven unit are located on opposite sides of the lens; as well as A clamping unit is disposed on the base to drive the drive unit and the driven unit to move synchronously toward the lens, so that the drive wheel and the idler wheel abut against the rotatable ring from different directions, wherein when the drive unit drives the rotatable ring to rotate via the drive wheel, the idler wheel will rotate with the rotatable ring.

2. The linear clamping drive mechanism as described in claim 1, characterized in that, The base includes: A fixing member, wherein the driving unit and the driven unit are slidably disposed on the fixing member, and the clamping unit is disposed on the fixing member; and A slider is slidably disposed on the fixed member, and the camera is fixed to the slider, wherein one of the fixed member and the slider has at least one guide portion, and the other of the fixed member and the slider has at least one sliding portion, and the camera is adapted to slide relative to the fixed member along at least one of an axial direction of the lens, a radial direction of the lens, and a transverse direction perpendicular to the axial direction and the radial direction via the cooperation of the guide portion and the sliding portion.

3. The linear clamping drive mechanism as described in claim 2, characterized in that, The fastener is a plate with a mounting surface and a circular hole penetrating the mounting surface. The lens is aligned with the circular hole, and the slider, the drive unit, the driven unit, and the clamping unit are disposed on the mounting surface around the circular hole.

4. The linear clamping drive mechanism as described in claim 2, characterized in that, The guiding part and the sliding part are composed of at least one of the following: a linear guide rod mechanism, a lead screw mechanism, a linear slide rail mechanism, and a rack and gear set.

5. The linear clamping drive mechanism as described in claim 1, characterized in that, The drive unit and the driven unit are respectively slidably mounted on the base by at least one of a linear guide rod mechanism, a lead screw mechanism, a linear slide rail mechanism, and a rack and gear set.

6. The linear clamping drive mechanism as described in claim 1, characterized in that, The drive unit also includes: A connector is slidably mounted on the base, and a drive wheel is positioned on the side of the connector facing the lens. The clamping unit is used to synchronously drive the connector and the driven unit to move towards the lens. A motor is connected to the drive wheel to drive the rotatable ring to rotate via the drive wheel.

7. The linear clamping drive mechanism as described in claim 1, characterized in that, The drive unit has multiple drive wheels and also includes: A connector is slidably mounted on the base, and at least one of a plurality of drive wheels is disposed on the side of the connector facing the lens, wherein the clamping unit is used to synchronously drive the connector and the driven unit to move toward the lens; A timing belt, fitted onto the multiple drive wheels; and A motor is connected to one of the plurality of drive wheels to drive the rotatable ring to rotate via the timing belt and the plurality of drives.

8. The linear clamping drive mechanism as described in claim 1, characterized in that, The driven unit also includes a connector that slides on the base, and the idler wheel is located on the side of the connector facing the lens. The clamping unit is used to synchronously drive the drive unit and the connector to move toward the lens.

9. The linear clamping drive mechanism as described in claim 1, characterized in that, The number of idler gears is multiple, and the driven unit includes: A connector, slidably mounted on the base, and at least one of a plurality of idler wheels is disposed on the side of the connector facing the lens, wherein the clamping unit is used to synchronously drive the drive unit and the connector to move toward the lens; and A timing belt is fitted onto these multiple idler pulleys.

10. The linear clamping drive mechanism as described in claim 1, characterized in that, The driven unit also includes an encoder connected to the idler wheel to calculate the number of revolutions of the rotatable ring.

11. The linear clamping drive mechanism as described in claim 1, characterized in that, The drive wheel and the idler wheel are respectively a rubber wheel, a gear, or a combination thereof.

12. The linear clamping drive mechanism as described in claim 1, characterized in that, The drive wheel and the idler wheel are both rubber wheels, and the surface of the rubber wheel facing the rotatable ring has grooves.

13. The linear clamping drive mechanism as described in claim 1, characterized in that, The clamping unit is composed of at least one of the following: a linear guide rod mechanism, a lead screw mechanism, a linear slide rail mechanism, and a rack and gear set.

14. The linear clamping drive mechanism as described in claim 1, characterized in that, The clamping unit is driven by a motor to move the drive unit and the driven unit synchronously toward the lens.

15. The linear clamping drive mechanism as described in claim 1, characterized in that, The clamping unit includes: A lead screw has a first thread and a second thread, wherein the first thread and the second thread have opposite thread directions about the axis; A first nut, which engages with the first thread, and the drive unit is connected to the first nut; and A second nut is screwed into the second thread, and the driven unit is connected to the second nut. When the lead screw rotates, the first nut and the second nut will drive the drive unit and the driven unit to move synchronously toward the lens.

16. The linear clamping drive mechanism as described in claim 15, characterized in that, The lead screw also has a handle, which is located between the first thread and the second thread.

17. The linear clamping drive mechanism as described in claim 15, characterized in that, The lead screw also has a handle, and one of the first thread and the second thread is disposed between the other of the first thread and the handle.

18. The linear clamping drive mechanism as described in claim 1, characterized in that, It also includes at least one first elastic member and at least one second elastic member, wherein the first elastic member is disposed between the drive unit and the clamping unit, and the second elastic member is disposed between the driven unit and the clamping unit.

19. The linear clamping drive mechanism as described in claim 1, characterized in that, It also includes a camera tilt adjustment unit disposed on the base, wherein the camera tilt adjustment unit includes: At least one side plate is connected to one side of the base; At least one pivot is connected to the side plate; and Another drive unit is used to drive the rotating shaft, which in turn causes the side plate and the base to rotate around the rotating shaft to adjust the tilt angle of the camera.

20. The linear clamping drive mechanism as described in claim 19, characterized in that, The other drive unit uses a motor to drive the side plate and the base to rotate around the pivot via a gear set, a timing belt set, or a combination thereof.

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