External hanging type camera automatic focusing and aperture adjusting device

Abstract

The invention discloses an external automatic focusing and aperture adjusting device for a camera, relates to the technical field of camera accessories, solves the problems that a camera shell is damaged, the universality is poor, the adjusting contact force is not easy to control and the like in camera focal length and aperture adjustment, and comprises a fixing assembly, a locking assembly, a supporting assembly, an adjusting assembly, a control assembly and a remote control assembly, the fixing assembly is matched with the locking assembly to achieve external hanging type non-destructive fixing. The supporting assembly adjusts and locks the pose of the adjusting assembly through a spherical hinge connecting rod with a thread locking structure, and it is ensured that the rotation axis of the supporting assembly is consistent with the axis of a camera adjusting ring. The adjusting assembly is composed of a motor, a speed reducer, a gear transmission mechanism and a rotating head adaptive to different cameras. The control assembly receives instructions of the remote control assembly and drives the motor to adjust accurately. The device does not need to transform the camera, is adaptive to various models of cameras, supports remote wireless operation, is simple in structure and low in cost, and remarkably improves the safety and efficiency of parameter adjustment in a motion capture scene.

Description

Technical Field

[0001] This invention relates to the technical field of camera accessories, and more particularly to an external camera autofocus and aperture adjustment device. Background Technology

[0002] In the field of motion capture systems (hereinafter referred to as "motion capture systems"), the motion capture camera, as the core data acquisition device, directly determines the accuracy and reliability of motion trajectory capture by its imaging clarity, frame rate and depth of field control. The adjustment of the above imaging parameters depends on the precise setting of focal length and aperture.

[0003] Currently, most motion capture cameras on the market do not have automatic focus or automatic aperture adjustment versions. Focus and aperture adjustment rely entirely on manual operation, and operators need to directly rotate the adjustment ring on the camera lens to complete the parameter settings.

[0004] In practical applications, to achieve full-angle, blind-spot-free motion capture coverage, motion capture cameras are typically densely arranged on trusses around and above the capture site, with some cameras even installed at heights exceeding 3 meters. This high-altitude arrangement makes adjusting camera parameters extremely inconvenient: operators must use climbing equipment (such as scaffolding or ladders) to approach the cameras, posing safety risks for working at heights. Furthermore, the limited operating space makes it easy for cameras to collide during adjustments, causing misalignment and affecting capture accuracy. Subsequent recalibration of the camera's attitude is then necessary, further increasing operational complexity.

[0005] More importantly, to ensure capture accuracy and coverage, motion capture systems require the deployment of 3-16 or even more motion capture cameras per use. Furthermore, the focal length and aperture parameters of each camera need to be adjusted according to the capture scenario (such as the speed of the target object, ambient lighting conditions, and capture distance). Traditional manual adjustment methods are extremely labor-intensive and time-consuming; if the capture scenario changes, the aforementioned tedious adjustment process must be repeated, severely impacting the efficiency and quality of motion capture work.

[0006] Existing technologies also include external lens adjustment devices. The utility model patent "An Automatic Focusing Device for a Novel Industrial Camera" (CN211955952U) describes a design driven by a DC motor, using a rubber wheel to move the camera's focusing ring. However, this design requires an opening in the motor housing to install the adjustment device, and the rubber wheel and focusing ring have single-point contact, making it difficult to control the contact force, prone to slippage or lens damage, and incompatible with different camera lenses of different models and apertures, failing to meet diverse user needs. Currently, there is no suitable automatic focusing and aperture adjustment solution for motion capture scenarios. Therefore, there is an urgent need for a versatile, highly accurate, and remotely controllable external automatic focusing and aperture adjustment mechanism to address the shortcomings of existing technologies. Summary of the Invention

[0007] To address the aforementioned problems associated with adjusting camera focal length and aperture, such as damage to the camera housing, poor versatility, and difficulty in controlling the adjustment contact force, the present invention aims to provide an external camera autofocus and aperture adjustment device. This device is driven by a motor to achieve automatic and precise adjustment of focal length and aperture, while also supporting remote control operation. It is compatible with various camera models, easy to install and remove, and reduces user operating costs.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0009] An external camera autofocus and aperture adjustment device includes: a fixing component 2, a locking component 3, a support component 4, an adjustment component, and a drive component. The fixing component 2 is detachably mounted on the camera 1 via the locking component 3. The drive component is an electric motor 6. The adjustment component includes: a rotating head 5, a reducer 7, a pinion 8, a gear disk 9, a fixed base 10, and a slider 11. The front side of the gear disk 9 is provided with an arc-shaped guide rail, and the inner side of the gear disk 9 is provided with internal teeth. The fixed base 10 is slidably mounted on the arc-shaped guide rail via the slider 11. The reducer 7 is mounted on the fixed base 10. On the 0, the output end of the motor 6 and the input end of the reducer 7 are connected for transmission. The pinion 8 is installed on the output end of the reducer 7, and the internal gears of the pinion 8 and the gear disk 9 mesh for transmission. The rotating head 5 is installed on the fixed base 10 and is clamped on the camera adjustment ring of the camera 1. The motor 6 is used to drive the fixed base 10 to slide along the arc guide rail, thereby realizing the rotation adjustment of the camera adjustment ring by the rotating head 5. The fixed component 2 and the gear disk 9 are connected by the support component 4. By adjusting the support component 4, the gear disk 9 and the camera adjustment ring of the camera 1 are coaxially set.

[0010] It also includes a control component for controlling the operation of the motor 6.

[0011] The aforementioned external camera autofocus and aperture adjustment device includes a fixing component 2 comprising a left single-sided gripper and a right single-sided gripper, and a locking component 3 comprising a sliding nut, a sliding screw, and a guide rail. The sliding nut is mounted on the sliding screw. The left single-sided gripper and the right single-sided gripper are slidably connected via the guide rail. One end of the sliding screw is rotatably connected to the right single-sided gripper. The sliding nut on the sliding screw is connected to the left single-sided gripper. The axis of the sliding screw is parallel to the sliding direction of the guide rail. By rotating the sliding screw, the left single-sided gripper can slide along the guide rail.

[0012] The aforementioned external camera autofocus and aperture adjustment device includes a locking assembly 3 that further comprises a handle connected to the end of a sliding screw.

[0013] The aforementioned external camera autofocus and aperture adjustment device has flexible rubber pads on the inner sides of both the left and right single-sided grippers.

[0014] The aforementioned external camera autofocus and aperture adjustment device includes a support component 4 comprising multiple ball joints and multiple connecting rods. Any two adjacent connecting rods are rotatably connected by a ball joint. The end of the connecting rod at one end is connected to a single-sided gripper on the right side, and the end of the connecting rod at the other end is connected to a gear disk 9.

[0015] The aforementioned external camera autofocus and aperture adjustment device includes an adjustment component that further comprises a sliding rod and a compression spring. The rotating head 5 is slidably mounted on the fixed base 10 via the sliding rod, and the compression spring is sleeved on the sliding rod. One end of the compression spring abuts against the fixed base 10, and the other end of the compression spring abuts against the rotating head 5.

[0016] The aforementioned external camera autofocus and aperture adjustment device includes a sliding rod comprising a cylinder and a rod, with the rod inserted inside the cylinder and the cylinder and rod coaxially arranged. The end of the cylinder is connected to the fixed base 10, and the end of the rod is connected to the rotating head 5.

[0017] The aforementioned external camera autofocus and aperture adjustment device, wherein the support component 4 further includes: a threaded locking structure, wherein any two connecting rods that are arbitrarily connected by a ball joint are limited by a threaded locking structure.

[0018] In the aforementioned external camera autofocus and aperture adjustment device, the gear disk 9 is a quarter-circle arc, a half-circle arc, or a complete circle.

[0019] The aforementioned external camera autofocus and aperture adjustment device, wherein when the camera 1 is a camera with an adjustment screw, the rotating head 5 is provided with a round hole and a deformation groove adapted to the camera adjustment screw; when the camera 1 is a camera without an adjustment screw, the rotating head 5 is provided with a V-block to adapt to camera adjustment rings of different radii.

[0020] In the aforementioned external camera autofocus and aperture adjustment device, the motor 6 is a stepper motor or a DC servo motor, and the control components include a microcontroller and a wireless communication module.

[0021] The aforementioned external camera autofocus and aperture adjustment device further includes: a remote control component, which is a physical remote control or a mobile APP software. The physical remote control is equipped with a power button, a high-speed / low-speed mode switching button, and adjustment + and adjustment - buttons, and has a built-in wireless communication module. The mobile APP software supports Android and iOS systems and connects to the wireless communication module via Bluetooth or Wi-Fi.

[0022] The present invention, by employing the above-mentioned technology, has the following positive effects compared with the prior art:

[0023] (1) The present invention adopts an external non-destructive fixing structure, which contacts the camera through a flexible rubber pad. There is no need to open holes or weld on the camera housing, which can avoid structural damage to the camera, adapt to various cameras, and protect the original performance of the equipment.

[0024] (2) The present invention can be adapted to cameras of different models, different body thicknesses and different lens diameters through adjustable locking components and support components, without the need to modify the camera, and has a wide range of applications, especially suitable for various specifications of industrial cameras commonly used in motion capture systems.

[0025] (3) This invention supports remote wireless remote control operation. Operators do not need to climb up to approach the motion capture camera on the truss. They can adjust the camera's focal length and aperture on the ground, which greatly reduces the risk and difficulty of high-altitude operations and significantly improves the efficiency of parameter calibration in motion capture scenarios.

[0026] (4) In this invention, each component uses mature standardized parts, the structure is simple, easy to process and manufacture, which can reduce production and use costs and facilitate promotion and application. Attached Figure Description

[0027] Figure 1 This is a system block diagram of an external camera autofocus and aperture adjustment device according to the present invention.

[0028] Figure 2 This is a schematic diagram of the mechanical structure of an external camera autofocus and aperture adjustment device according to the present invention.

[0029] Figure 3 This is a schematic diagram of the rotating head structure of an external camera autofocus and aperture adjustment device applicable to cameras with adjustment screws, according to the present invention.

[0030] Figure 4 This is a schematic diagram of the installation and structure of a screwless camera with an external camera autofocus and aperture adjustment device according to the present invention.

[0031] Figure 5 This is a block diagram of a stepper motor drive and control system for an external camera autofocus and aperture adjustment device according to the present invention.

[0032] Figure 6 This is a system block diagram of a DC servo motor drive and control component of an external camera autofocus and aperture adjustment device according to the present invention.

[0033] In the attached diagram: 1. Camera; 2. Fixing component; 3. Locking component; 4. Support component; 5. Rotating head; 6. Motor; 7. Reducer; 8. Pinion; 9. Gear disk; 10. Fixing base; 11. Slider. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.

[0035] Please refer to Figures 1 to 6 As shown, an external camera autofocus and aperture adjustment device is illustrated, which includes: a fixing component 2, a locking component 3, a support component 4, an adjustment component, a control component, and a remote control component;

[0036] The fixing component 2 is used to externally fix the entire device to the camera body or lens of the camera 1, and to provide a positioning reference for each component;

[0037] The locking component 3 cooperates with the fixing component 2 to lock the device to the camera 1 through an adjustable structure, thereby achieving relative fixation between the device and the camera 1;

[0038] The support assembly 4 consists of a ball joint and a connecting rod with a threaded locking structure, which is used to adjust and lock the position of the adjustment assembly relative to the fixed assembly 2, so that the rotation axis of the adjustment assembly is aligned with the axis of the focal length / aperture adjustment ring of the camera 1.

[0039] The adjustment assembly includes a rotating head 5, a motor 6, a reducer 7, a pinion 8, a gear disk 9, a fixed base 10, and a slider 11. The gear disk 9 is a disc structure with an internal gear and an arc guide rail. The slider 11 is slidably mounted on the arc guide rail. The fixed base 10 is fixedly connected to the slider 11. The motor 6 and the reducer 7 are assembled and installed on the fixed base 10. The pinion 8 is connected to the output shaft of the reducer 7 and meshes with the internal gear of the gear disk 9. The rotating head 5 is installed on the fixed base 10 and pressed against the camera adjustment ring via a guide rail and a compression spring.

[0040] The control component is used to receive instructions from the remote control component, calculate the rotation angle and speed of the motor 6, and send them to the drive unit;

[0041] The remote control component is used to send remote control commands related to the adjustment direction and rotation angle increment to the control component, thereby realizing the remote adjustment of the focal length and aperture.

[0042] Furthermore, in a preferred embodiment, the inner side of the gripper of the fixing component 2 is lined with a flexible rubber pad.

[0043] Furthermore, in a preferred embodiment, the locking assembly 3 consists of a handle, a sliding screw, and a guide rail. The guide rail is installed on the fixing assembly 2, and the sliding screw is connected to the handle. The gripper is driven to clamp the camera 1 housing by rotating the handle.

[0044] Furthermore, in a preferred embodiment, the ball joint of the support component 4 can be freely adjusted in relative position, and the threaded locking structure can fix the relative position of the adjustment component and the fixed component 2 after locking.

[0045] Furthermore, in a preferred embodiment, the gear disk 9 of the adjusting component has an internal gear circumference ratio of 1 / 4, 1 / 2, or a complete circumference to adapt to different adjustment angle requirements.

[0046] Furthermore, in a preferred embodiment, the rotating head 5 of the adjustment component is always pressed against the camera adjustment ring by a compression spring to achieve stable contact transmission during the adjustment process. For a camera 1 with an adjustment screw, the structure is provided with a round hole and a deformation groove that are adapted to the adjustment screw of the camera 1 for holding the adjustment screw. For a camera 1 without an adjustment screw, the structure is a V-shaped block with an inner rubber pad that can adapt to adjustment rings of different radii.

[0047] Furthermore, in a preferred embodiment, the motor 6 is a stepper motor or a DC servo motor, and the control components include a microcontroller and a wireless communication module. The drive components for the stepper motor include a ring distributor, and the drive components for the DC servo motor include a PWM controller and an H-bridge drive circuit. The power management module is used for voltage conversion, charging management, and remaining power estimation.

[0048] Furthermore, in a preferred embodiment, the remote control component is a physical remote control or a mobile APP software. The physical remote control is equipped with a power button, a high-speed / low-speed mode switching button, and adjustment + and adjustment - buttons, and has a built-in wireless communication module. The mobile APP software supports Android and iOS systems and connects to the wireless communication module via Bluetooth or Wi-Fi.

[0049] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention.

[0050] In addition to the above, the present invention also has the following embodiments:

[0051] In a further embodiment of the present invention, the device mainly includes a fixing component 2, a locking component 3, a supporting component 4, an adjusting component, a controlling component, and a remote control component. These components work together to achieve automatic adjustment of the focal length and aperture. The specific functions of each component are as follows:

[0052] Fixing component 2: Used to secure the entire external device to the camera body or lens of camera 1, providing reliable positioning;

[0053] Locking component 3: cooperates with fixing component 2 to lock the external adjustment device onto the camera 1 to be adjusted;

[0054] Support component 4: Supports the focal ring and aperture ring that need to rotate, counteracts the clamping force applied by the adjustment component, and prevents the lens from being subjected to unbalanced load on one side during adjustment;

[0055] Adjustment component: Generates a stable clamping force on the focal ring and aperture ring to be adjusted and rotates, and drives them to rotate according to control commands;

[0056] Control component: Receives remote control commands from the remote control component, calculates the angle and speed commands for the prime mover's rotation, and sends them to the drive component;

[0057] Drive component: Receives control commands from the control component, supplies power to the prime mover in the regulating component, and drives it to rotate;

[0058] Remote control component: Sends remote control commands to the control component, enabling control over the direction and rotation angle increments.

[0059] In a further embodiment of the present invention, the mechanical structure of the device mainly includes the aforementioned fixing component 2, locking component 3, support component 4, and adjustment component.

[0060] In a further embodiment of the present invention, the camera 1 is fixed on a truss or tripod, and the grippers of the fixing component 2 are lined with flexible rubber pads to increase friction while protecting the camera 1 housing from being pinched.

[0061] In a further embodiment of the present invention, the locking component 3 consists of a handle, a sliding screw, and a guide rail, and is installed on the fixing component 2. The gripper is clamped by rotating the handle and fixed to the housing of the camera 1.

[0062] In a further embodiment of the present invention, the support component 4 consists of a series of ball joints and connecting rods. The ball joints and connecting rods have a threaded locking structure, which can be freely adjusted when relaxed and completely fixed when locked, so that the adjustment component obtains a stable posture relative to the camera 1.

[0063] In a further embodiment of the present invention, the adjustment assembly consists of a rotating head 5, a motor 6, a reducer 7, a pinion 8, a gear disk 9, a fixed base 10, and a slider 11. The gear disk 9 is connected to the support assembly 4. The main structure of the gear disk 9 is a disc-shaped internal gear. The gear disk 9 also has an arc-shaped guide rail structure. The slider 11 is mounted on the arc-shaped guide rail. The fixed base 10 is mounted on the slider 11. The motor 6 is mounted on the fixed base 10 and assembled with the reducer 7. The output shaft is connected to the pinion 8. The pinion 8 meshes with the internal gear of the gear disk 9. When the motor 6 rotates, it will drive the fixed base 10 and the slider 11 to rotate together. The axis of rotation is consistent with the axis of the focal length and aperture adjustment ring to be adjusted.

[0064] In a further embodiment of the present invention, the rotating head 5 is mounted on the fixed base 10 via a guide rail and a compression spring, and is also pressed against the adjustment ring of the camera 1 by the compression spring to obtain stable contact. When the fixed base 10 rotates, the rotating head 5 will drive the adjustment ring of the camera 1 to rotate together, thereby completing the adjustment of the aperture or focal length.

[0065] In a further embodiment of the present invention, during use, the fixing component 2 fixes the invented device to the camera 1, and the locking component 3 rotates the handle to push the gripper to press the camera 1, thus completing the installation and positioning of the device; by adjusting the ball joint structure of the support component 4, the axis of the adjusting component gear disk 9 is aligned with the axis of the camera 1 lens, the rotating head 5 is aligned with the position of the adjusting ring to be adjusted, and the ball joint is locked to complete the positioning.

[0066] In a further embodiment of the present invention, the operator presses the corresponding adjustment button through the remote control transmitter, the remote control transmitter sends a wireless command, the remote control receiver receives the command and transmits it to the microcontroller; the microcontroller drives the motor 6 to rotate through the drive component according to the command type, and drives the pinion 8 to rotate through the reducer 7, so that the fixed base 10 rotates as a whole, and then drives the adjustment ring of the camera 1 lens to rotate through the rotating head 5, so as to realize the adjustment of the focal length or aperture.

[0067] In a further embodiment of the present invention, specific implementation method one: as follows Figure 1 As shown, this device mainly consists of a fixing component 2, a locking component 3, a support component 4, an adjustment component, a control component, and a remote control component. The fixing component 2 provides the mechanical mounting base for the entire device and is directly mechanically connected to the locking component 3 and the support component 4. The adjustment component is installed on the support component 4 and obtains stable positioning of the camera 1 to be adjusted through the support component 4 and the fixing component 2. In addition, the drive component and the control component are also installed on the fixing component 2. The control component receives the instructions from the remote control component through wireless signals and feeds back the status information of the device. Then, it communicates with the drive component through an electrical connection to control the motor 6 inside the adjustment component.

[0068] In a further embodiment of the present invention, specific implementation method two: as follows Figure 2 As shown, the fixing component 2 is used to clamp the camera 1 to be adjusted; the locking component 3 consists of a handle, a sliding screw, and a guide rail, and is installed on the fixing component 2; the support component 4 consists of a series of ball joints and connecting rods. Figure 2 Two pairs are drawn without losing generality; the adjustment assembly consists of a rotating head 5, a motor 6, a reducer 7, a pinion 8, a gear disk 9, a fixed base 10, and a slider 11. The main structure of the gear disk 9 is a disc-shaped internal gear. Figure 2 In general, a quarter circle is used to represent the angle; if a larger angle needs to be adjusted, a half circle or a full circle can be used.

[0069] In a further embodiment of the present invention, specifically in the third embodiment: to adapt to cameras 1 with different structures (with / without set screws), this device is designed with two different locking and adjusting clamp structures, suitable for the rotating head 5 structure of cameras 1 with adjusting screws, such as... Figure 3As shown, the inner side of the adjusting clamp of this structure is provided with a round hole corresponding to the adjusting screw of camera 1, and a deformation groove is also machined therein, and a locking screw is provided. When in use, the adjusting screw of camera 1 is inserted into the round hole, and after locking, the adjusting screw of camera 1 will be clamped to form a stable connection.

[0070] In a further embodiment of the present invention, specific implementation method four: the rotating head 5 of the camera 1 without adjustment screws has the following structure. Figure 4 As shown, the structure adopts a V-block structure with anti-slip rubber on the inner side. It can be pressed tightly by the compression spring connected to the adjustment component fixing seat 10, and can fit closely to the smooth adjustment ring without adjustment screws. At the same time, the V-block design can automatically adapt to camera adjustment rings of different sizes, eliminating the need for frequent replacement of the rotating head 5.

[0071] In a further embodiment of the present invention, specifically in implementation method five: this device provides two drive and control circuit schemes, corresponding to different accuracy and cost requirements; the drive and control component system using a stepper motor is as follows: Figure 5 As shown, the core is a microcontroller with an external wireless communication module for receiving remote control commands. The stepper motor is driven by a ring distributor, which can adapt to any stepper motor after setting the corresponding number of phases and steps. The power supply is a battery, equipped with a power management module to complete functions such as voltage conversion, charging management, and remaining power estimation. After receiving the remote control command, the microcontroller outputs pulse signals and direction signals, which are then converted into phase levels by the ring distributor to drive the stepper motor to rotate.

[0072] In a further embodiment of the present invention, specific implementation method six: a system using a DC servo motor drive assembly and control assembly, such as... Figure 6 As shown, the microcontroller, wireless communication module, and power supply system are all consistent with the stepper motor solution; the DC servo motor has a built-in encoder, which can provide real-time feedback on the rotation angle. The microcontroller controls the motor speed and direction through the PWM driver (including the PWM controller and H-bridge drive circuit), and achieves closed-loop control by combining the encoder feedback signal, which has higher adjustment accuracy and is suitable for motion capture scenarios with extremely high adjustment accuracy requirements.

[0073] In a further embodiment of the present invention, specifically embodiment seven: the remote control component supports two implementation methods: a physical remote control and a mobile APP. The physical remote control adopts a button design, with a "power button," a "mode switch button" (high speed / low speed), an "adjust +," and an "adjust -" button on the front; the remote control has a built-in wireless communication module.

[0074] In a further embodiment of the present invention, specific implementation method eight: the mobile APP software solution supports Android and iOS systems and connects to the device's wireless communication module via Bluetooth or Wi-Fi; the APP interface includes a device list (multiple devices can be connected simultaneously), a parameter adjustment area (selecting the adjustment direction and adjustment speed), and a mode selection area (single step / continuous); it supports adjustment log recording; the APP can realize the synchronous calibration of multiple camera parameters, greatly improving operation efficiency.

[0075] In a further embodiment of the present invention, the camera 1 housing is not damaged: an external non-destructive fixing structure is adopted, which contacts the camera 1 through a flexible rubber pad, eliminating the need for drilling holes or welding on the camera 1 housing, thus avoiding structural damage to the camera 1, adapting to various types of cameras 1, and protecting the original performance of the equipment.

[0076] In a further embodiment of the present invention, the device is highly versatile: the adjustable locking component 3 and the support component 4 can be adapted to cameras 1 of different models, body thicknesses and lens diameters without requiring modification of the camera 1. It has a wide range of applications, especially suitable for various specifications of industrial cameras commonly used in motion capture systems.

[0077] In a further embodiment of the present invention, operation is convenient: it supports remote wireless remote control operation, and the operator does not need to climb up to approach the motion capture camera 1 on the truss. The operator can adjust the focal length and aperture of the camera 1 from the ground, which greatly reduces the risk and difficulty of high-altitude operation and significantly improves the parameter calibration efficiency in motion capture scenarios.

[0078] In a further embodiment of the present invention, the structure is simple and the cost is low: each component uses mature standardized parts, the structural design is simple, it is easy to process and manufacture, which can reduce production and use costs and facilitate promotion and application.

[0079] In a further embodiment of the present invention, an external camera 1 automatic focus and aperture adjustment device is disclosed, belonging to the field of camera 1 accessory technology. It aims to solve the problems of high-altitude operation risks, low efficiency, poor versatility, and easy equipment damage associated with manual focus / aperture adjustment of existing motion capture cameras 1. The device includes a fixing component 2, a locking component 3, a support component 4, an adjustment component, a control component, and a remote control component. The fixing component 2, in conjunction with the locking component 3, achieves external non-destructive fixation, with flexible rubber pads lining the grippers to protect the camera 1. The support component 4 adjusts and locks the position of the adjustment component via a ball joint with a threaded locking structure, ensuring that its rotation axis is consistent with the adjustment ring axis of the camera 1. The adjustment component consists of a motor, a reducer 7, a gear transmission mechanism, and a rotating head 5 adapted to different cameras 1, achieving stable contact transmission through a compression spring. The control component receives commands from the remote control component (physical remote control or mobile APP) and drives the motor for precise adjustment. This device requires no modification to the camera 1, is compatible with various camera models 1, supports remote wireless operation, has a simple structure, low cost, and significantly improves the safety and efficiency of parameter adjustment in motion capture scenarios.

[0080] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. An external camera autofocus and aperture adjustment device, characterized in that, include: The system comprises a fixing component (2), a locking component (3), a support component (4), an adjustment component, and a drive component. The fixing component (2) is detachably mounted on the camera (1) via the locking component (3). The drive component is an electric motor (6). The adjustment component includes a rotating head (5), a reducer (7), a pinion (8), a gear disk (9), a fixed seat (10), and a slider (11). The front side of the gear disk (9) is provided with an arc-shaped guide rail, and the inner side of the gear disk (9) is provided with internal teeth. The fixed seat (10) is slidably mounted on the arc-shaped guide rail via the slider (11). The reducer (7) is mounted on the fixed seat (10), and the electric motor (6) outputs power to the camera (1). The output end is connected to the input end of the reducer (7) for transmission. The pinion (8) is installed at the output end of the reducer (7). The internal gears of the pinion (8) and the gear disk (9) mesh for transmission. The rotating head (5) is installed on the fixed seat (10). The rotating head (5) is clamped on the camera adjustment ring of the camera (1). The motor (6) is used to drive the fixed seat (10) to slide along the arc guide rail to realize the rotation adjustment of the rotating head (5) on the camera adjustment ring. The fixed component (2) and the gear disk (9) are connected through the support component (4). By adjusting the support component (4), the gear disk (9) and the camera adjustment ring of the camera (1) are coaxially set. It also includes a control component for controlling the operation of the motor (6).

2. The external camera autofocus and aperture adjustment device according to claim 1, characterized in that, The fixing component (2) includes a left single-sided gripper and a right single-sided gripper. The locking component (3) includes a sliding nut, a sliding screw and a guide rail. The sliding nut is mounted on the sliding screw. The left single-sided gripper and the right single-sided gripper are slidably connected through the guide rail. One end of the sliding screw is rotatably connected to the right single-sided gripper. The sliding nut on the sliding screw is connected to the left single-sided gripper. The axis of the sliding screw is parallel to the sliding direction of the guide rail. By rotating the sliding screw, the left single-sided gripper can slide along the guide rail.

3. The external camera autofocus and aperture adjustment device according to claim 2, characterized in that, The locking assembly (3) also includes a handle that is connected to the end of the sliding screw.

4. The external camera autofocus and aperture adjustment device according to claim 2, characterized in that, Flexible rubber pads are provided on the inner sides of both the left and right single-sided grippers.

5. The external camera autofocus and aperture adjustment device according to claim 2, characterized in that, The support assembly (4) includes: multiple ball joints and multiple connecting rods. Any two adjacent connecting rods are rotatably connected by a ball joint. The end of the connecting rod at one end is connected to the right-side single-sided gripper, and the end of the connecting rod at the other end is connected to the gear disk (9).

6. The external camera autofocus and aperture adjustment device according to claim 1, characterized in that, The adjustment assembly also includes a sliding rod and a compression spring. The rotating head (5) is slidably mounted on the fixed seat (10) via the sliding rod. The compression spring is sleeved on the sliding rod, with one end of the compression spring abutting against the fixed seat (10) and the other end of the compression spring abutting against the rotating head (5).

7. The external camera autofocus and aperture adjustment device according to claim 1, characterized in that, The gear disk (9) is a quarter circle, a half circle, or a complete circle.

8. The external camera autofocus and aperture adjustment device according to claim 1, characterized in that, When the camera (1) is a camera with an adjustment screw, the rotating head (5) is provided with a round hole and a deformation groove that are adapted to the camera adjustment screw. When the camera (1) is a camera without an adjustment screw, the rotating head (5) is provided with a V-block to adapt to camera adjustment rings of different radii.

9. The external camera autofocus and aperture adjustment device according to claim 1, characterized in that, The motor (6) is a stepper motor or a DC servo motor, and the control components include a microcontroller and a wireless communication module.

10. The external camera autofocus and aperture adjustment device according to claim 1, characterized in that, Also includes: The remote control component is either a physical remote control or a mobile APP software. The physical remote control is equipped with a power button, a high-speed / low-speed mode switching button, and adjustment + and adjustment - buttons, and has a built-in wireless communication module. The mobile APP software supports Android and iOS systems and connects to the wireless communication module via Bluetooth or Wi-Fi.

Images