Camera active focusing device and camera assembling equipment

Abstract

The utility model discloses an active focusing device for a camera and camera assembling equipment. The active focusing device for the camera comprises a rack, a lens clamping mechanism and a visual centering mechanism, the lens clamping mechanism comprises a visual centering channel; the visual centering mechanism comprises an image acquisition card, a first image acquisition device, a teleconverter and a second image acquisition device; the image acquisition card, the first image acquisition device, the teleconverter, the visual centering channel and the second image acquisition device are sequentially arranged along a first direction; the image acquisition card is provided with an alignment mark; the first image collector is arranged on the rack in a sliding manner and is provided with a first collection port facing the visual centering channel; the teleconverter is arranged on the rack in a sliding manner; the teleconverter is centered with the visual centering channel along a first direction through the first image collector; the second image collector is provided with a second collection port facing the visual centering channel and the alignment mark; the image acquisition card is mounted on the rack in a position-adjustable manner; and the lens clamping mechanism is centered with the alignment mark along the first direction through the second image collector.

Description

Technical Field

[0001] The utility model relates to the technical field of camera assembly and optical detection, in particular to a camera active focusing device and camera assembly equipment. Background Art

[0002] With the increasing application of automotive cameras, home cameras and industrial cameras, the requirements for camera clarity are getting higher and higher, so active focus AA (active alignment) technology came into being. In the process of camera assembly, for AA active focus machines, there are more and more camera varieties, and the product switching in production is becoming more and more frequent. In addition, different cameras have different sizes and shapes. When replacing different products, when assembling the image sensor (Sensor) base and lens mount accessories, the manual centering and debugging process of placing the lens (Lens) on the sensor base is particularly cumbersome. Specifically, it is mainly judged by human eye observation or measurement with measuring tools whether the lens and the sensor base are in a vertical line, and then the centering adjustment is made step by step. In the whole centering process, an operator and a debugger are required to cooperate to complete this centering process. Therefore, this centering process has become a very time-consuming and inefficient process, affecting production efficiency, and the centering deviation observed by the human eye also affects the overall production quality. Utility Model Content

[0003] The utility model discloses an active focusing device for a camera and camera assembly equipment, which are used for automatically adjusting the position to realize automatic centering after confirming the position deviation through visual images.

[0004] In order to achieve the above object, the utility model provides the following technical solutions:

[0005] In a first aspect, an embodiment of the utility model provides a camera active focusing device, comprising: a frame, a lens clamping mechanism, and a visual centering mechanism;

[0006] The lens clamping mechanism is fixedly mounted on the frame and is used to clamp the lens; the lens clamping mechanism includes a visual centering channel;

[0007] The visual centering mechanism comprises an image acquisition card, a first image acquisition device, a teleconverter and a second image acquisition device; the image acquisition card, the first image acquisition device, the teleconverter, the visual centering channel and the second image acquisition device are arranged in sequence along a first direction; the image acquisition card has an alignment mark; the first image acquisition device is slidably disposed on the frame and has a first acquisition port facing the visual centering channel; the teleconverter is slidably disposed on the frame; the teleconverter is centered with the visual centering channel along the first direction through the first image acquisition device;

[0008] The second image collector has a second acquisition port facing the visual centering channel and the image acquisition card; the image acquisition card is adjustably mounted on the rack; the lens clamping mechanism is aligned with the alignment mark along the first direction through the second image collector.

[0009] The above-mentioned camera active focus device adds a visual centering mechanism, and the alignment mark on the image acquisition card in the visual centering mechanism serves as the intermediate reference of the camera base and the lens position. The alignment mark and the lens clamping mechanism are first aligned in a first direction, such as a vertical direction, so that the camera base fixture and the alignment mark can be subsequently aligned, thereby realizing the alignment of the lens clamping mechanism and the camera base fixture in the first direction, that is, realizing the alignment of the lens and the camera base, thereby ensuring the reliability of camera assembly. Specifically, when the visual centering channel on the lens clamping mechanism is aligned with the alignment mark on the image acquisition card, the visual centering channel is first aligned with the teleconverter, and then the aligned teleconverter and the visual centering channel are aligned with the alignment mark on the image acquisition card in the first direction. The specific operation process is as follows: first, move the first image collector to the top of the visual centering channel and the teleconverter, and use the first image collector to move and collect the image information of the visual centering channel and the teleconverter, and record it as the first image information; adjust the relative position of the teleconverter and the visual centering channel according to the first image information so that the teleconverter and the visual centering channel are centered in the first direction. Then move the first image collector so that the first image collector does not block the alignment mark on the image acquisition card in the first direction; use the second image collector to collect the alignment mark and the image information of the well-aligned teleconverter and the visual centering channel, and record it as the second image information; adjust the position of the image acquisition card according to the second image information so that the alignment mark and the well-aligned teleconverter and the visual centering channel are centered in the first direction. At this time, the centering adjustment is completed. The above-mentioned camera active focus device no longer relies on manual centering adjustment by human eyes and measuring tools, which greatly improves the alignment accuracy and centering efficiency.

[0010] In some embodiments, the lens clamping mechanism includes a lens clamping claw and a lens gripper mounting seat, the lens clamping claw is mounted on the frame via the lens gripper mounting seat, and the clamping space of the lens clamping claw forms the visual centering channel.

[0011] In some embodiments, the visual centering mechanism also includes a teleconverter mount; the teleconverter mount is fixed to the frame, and along the first direction, the teleconverter mount is located between the first image collector and the lens clamping mechanism; the teleconverter is slidably disposed on the teleconverter mount.

[0012] In some embodiments, the first image collector and / or the second image collector is a centering camera.

[0013] In some embodiments, the first image collector is slidably mounted on the frame via a first direction adjustment component; the first direction adjustment component is used to drive the first image collector to approach or move away from the visual centering channel along the first direction.

[0014] In some embodiments, the first direction adjustment component includes a lifting and focusing motor, a lead screw transmission module and a guide rod, the lifting and focusing motor is connected to the guide rod through the lead screw transmission module, and the first image collector is slidably mounted on the guide rod.

[0015] In the second aspect, an embodiment of the utility model also provides a camera assembly device, comprising a camera active focus device as described in any one of the first aspects, and also comprising a camera base jig and a motion mechanism; the camera base jig is installed on the frame through the motion mechanism to fix the camera base; along the first direction, the motion mechanism is located between the lens clamping mechanism and the second image collector; the motion mechanism drives the camera base jig to align with the alignment mark along the first direction.

[0016] In some embodiments, the motion mechanism includes a second direction adjustment component and a third direction adjustment component, the second direction adjustment component is mounted on the frame, and the third direction adjustment component is mounted on the second direction adjustment component; the camera base fixture is mounted on the third direction adjustment component;

[0017] The second direction adjustment component is used to drive the third direction adjustment component to move along the second direction, and the third direction adjustment component is used to drive the camera base fixture to move along the third direction; the second direction and the third direction are both perpendicular to the first direction.

[0018] In some embodiments, the second direction adjustment component includes a second direction linear motor; and / or,

[0019] The third direction adjustment component includes a third direction linear motor.

[0020] In some embodiments, the camera assembly device also includes a lens jig, which is installed on the third direction adjustment component and is used to fix the lens; the second direction adjustment component and the third direction adjustment component cooperate to adjust the position of the lens jig relative to the lens clamping mechanism so that the lens clamping mechanism clamps the lens fixed on the lens jig.

[0021] In some embodiments, the camera assembly equipment includes at least two of the motion mechanisms, and the camera base fixture and the lens fixture are correspondingly installed on each of the motion mechanisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of an active focusing device for a camera provided by an embodiment of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the lens clamping mechanism and the visual centering mechanism in the active focusing device of the camera;

[0024] Figure 3 It is a structural diagram of an image acquisition card;

[0025] Figure 4 A schematic diagram of the structure of a camera assembly device provided by an embodiment of the utility model;

[0026] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0027] Figure 6 A schematic diagram of the structure of the motion mechanism in the camera assembly device;

[0028] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0029] Icons: 1-working base; 2-working support frame; 3-lens clamp; 4-image acquisition card; 5-upper centering camera; 6-teleconverter; 7-lower centering camera; 31-lens; 32-lens gripper mounting seat; 33-lens fixture; 51-camera mounting seat; 52-camera base mounting module; 53-lifting and focusing motor; 8-camera base fixture; 81-camera base; 91-first motion mechanism; 92-second motion mechanism; 911-Y-axis linear motor; 921-X-axis linear motor; O-alignment mark. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] like Figures 1 to 5As shown, an embodiment of the utility model provides an active focusing device for a camera, comprising: a frame, a lens clamping mechanism and a visual centering mechanism; the lens clamping mechanism is fixedly mounted on the frame and is used to clamp the lens 31; the lens clamping mechanism comprises a visual centering channel; the visual centering mechanism comprises an image acquisition card 4, a first image acquisition device, a teleconverter 6 and a second image acquisition device; the image acquisition card 4, the first image acquisition device, the teleconverter, the visual centering channel and the second image acquisition device are arranged in sequence along a first direction; an alignment mark O is provided on the image acquisition card 4; the first image acquisition device is slidably mounted on the frame and has a first acquisition port facing the visual centering channel; the second image acquisition device has a second acquisition port facing the visual centering channel and the image acquisition card 4; the image acquisition card 4 is positionally adjustable on the frame; the lens clamping mechanism is aligned with the alignment mark O along the first direction through the second image acquisition device.

[0032] The above-mentioned camera active focus device adds a visual centering mechanism, and the alignment mark O on the image acquisition card 4 in the visual centering mechanism serves as the intermediate reference for the position of the camera base 81 and the lens 31. The alignment mark O is firstly aligned with the lens clamping mechanism in a first direction, such as the vertical direction, so that the camera base fixture 8 and the alignment mark O can be subsequently aligned, thereby realizing the alignment of the lens clamping mechanism and the camera base fixture 8 in the first direction, that is, realizing the alignment of the lens 31 and the camera base 81, thereby ensuring the reliability of the camera assembly. Specifically, when the visual centering channel on the lens clamping mechanism is aligned with the alignment mark O on the image acquisition card 4, the visual centering channel is firstly aligned with the teleconverter 6, and then the aligned teleconverter 6 and the visual centering channel are aligned with the alignment mark O on the image acquisition card 4 in the first direction. The specific operation process is as follows: first, move the first image collector to the top of the visual centering channel and the teleconverter 6, and use the first image collector to move and collect the image information of the visual centering channel and the teleconverter 6, and record it as the first image information; adjust the relative position of the teleconverter 6 and the visual centering channel according to the first image information so that the teleconverter 6 and the visual centering channel are centered in the first direction. Then move the first image collector away so that the first image collector does not block the alignment mark O on the image acquisition card 4 in the first direction; use the second image collector to collect the image information of the alignment mark O and the aligned teleconverter 6 and the visual centering channel, and record it as the second image information; adjust the position of the image acquisition card 4 according to the second image information so that the alignment mark O is aligned with the aligned teleconverter 6 and the visual centering channel in the first direction. At this time, the centering adjustment is completed. The above-mentioned camera active focus device no longer relies on manual centering adjustment by human eyes and measuring tools, which greatly improves the alignment accuracy and centering efficiency.

[0033] One possible way to achieve this is as follows: Figure 1-5As shown, the frame includes a working base 1 and a working support frame 2, the working support frame 2 is relatively fixed to the working base 1, the second image collector is installed on the working base 1, the teleconverter 6, the lens clamping mechanism, the first image collector and the image acquisition card 4 are all installed on the working support frame 2, and along the first direction, the image acquisition card 4, the first image collector, the teleconverter 6, the lens clamping mechanism and the second image collector are arranged in sequence. The lens clamping mechanism is used to clamp the lens 31; the main function of the visual centering mechanism is to use the alignment mark O as the intermediate reference to align the lens clamping mechanism and the camera base 81 along the first direction, so as to achieve absolute concentricity between the lens 31 clamped by the lens clamping mechanism and the camera base 81, so as to ensure the assembly accuracy of the lens 31 and the camera base 81.

[0034] It can be understood that the alignment mark O is a mark on the image acquisition card 4. Figure 3 As shown, the image acquisition card 4 has a circular alignment mark O in the middle. During alignment, the first image information is first acquired according to the first image acquisition device, and then the center of the visual centering channel is overlapped with the center of the teleconverter 6 according to the first image information. Then, the second image information is acquired according to the second image acquisition device, and the circular alignment mark O is overlapped with the center of the visual centering channel and the center of the teleconverter 6 according to the second image information, thereby achieving the coincidence of the center of the lens 31 with the alignment mark O. The image acquisition card 4 is positionally adjustable on the working support frame 2. For example, the image acquisition card 4 is fixed to the working support frame 2 through a transparent cover plate and a threaded connector. The working support frame 2 has a strip adjustment hole that matches the threaded support frame. The relative position of the image acquisition card 4 and the working support frame 2 can be fine-tuned by adjusting the position of the threaded connector in the adjustment hole.

[0035] In some embodiments, the lens clamping mechanism includes a lens clamping claw 3 and a lens gripper mounting seat 32, the lens clamping claw 3 is mounted on the frame through the lens gripper mounting seat 32, and the clamping space of the lens clamping claw 3 forms a visual centering channel.

[0036] In one possible implementation, refer to Figure 1 Combined with Figure 5 The lens clamping mechanism is fixed on the working support frame 2 by the lens gripper mounting seat 32, and is placed above the motion mechanism, while the lens gripper 3 is fixed below the lens gripper mounting seat 32. The visual centering channel on the lens clamping mechanism is a circular clamping space formed by the lens gripper 3, that is, the axis of the visual centering channel is the axis of the lens 31, so when the center of the visual centering channel coincides with the center of the circular alignment mark O on the image acquisition card 4, it can ensure that the lens 31 clamped by the lens gripper 3 is absolutely concentric with the circular alignment mark O on the image acquisition card 4.

[0037] In some embodiments, the visual centering mechanism further includes a teleconverter mount; the teleconverter mount is fixed to the frame, and along the first direction, the teleconverter mount is located between the first image collector and the lens clamping mechanism; the teleconverter 6 is slidably disposed on the teleconverter mount.

[0038] It is understandable that the teleconverter is mainly used in conjunction with the first image collector. Figure 1 Combined with Figure 5 The teleconverter 6 is fixed to the working support frame 2 through the teleconverter mounting seat and is located above the lens gripper mounting seat 32. The teleconverter can be fine-tuned relative to the teleconverter mounting seat, such as by a piezoelectric ceramic motor. The first image collector, the teleconverter 6 and the lens clamp 3 are adjusted to be on a vertical line along the first direction. Exemplarily, during centering, the first image collector is used to collect image information of the visual centering channel on the teleconverter 6 and the lens clamp 3, which is defined as the first image information; the position of the teleconverter 6 is fine-tuned according to the first image information and the teleconverter 6 is absolutely concentric with the visual centering channel to ensure that the teleconverter 6 is absolutely concentric with the lens 31 clamped by the lens clamp 3. Then, the second image collector is used to collect image information of the alignment mark O and the visual centering channel, which is defined as the second image information; the position of the alignment mark O is adjusted according to the second image information so that the center of the alignment mark O coincides with the center of the visual centering channel. In this process, the teleconverter 6 can be removed to improve the clarity of the second image information.

[0039] In some embodiments, the first image collector and / or the second image collector is a centering camera. Exemplarily, the tails of the upper centering camera 5 and the lower centering camera 7 are both provided with a network cable and a power cable, which are connected to a computer via the network cable to enable the camera to operate normally.

[0040] In some embodiments, the first image collector is slidably mounted on the frame via a first direction adjustment component; the first direction adjustment component is used to drive the first image collector to approach or move away from the visual centering channel along a first direction.

[0041] In one possible implementation, the first image collector is slidably mounted on the working support frame 2 through a first direction adjustment component. The first image collector can move along a first direction such as a vertical direction to adjust the focal length of the first image collector so as to obtain a clear image and ensure the accuracy of the centering operation.

[0042] It should be noted that the main function of the first direction adjustment component is to drive the first image collector to move in a straight line along the first direction. Therefore, any structure that can achieve the above function can be used as the first direction adjustment component in this embodiment, such as a gear rack structure, a screw slider, a cylinder, a hydraulic cylinder, an electric push rod, and a linear motor.

[0043] In some embodiments, the first direction adjustment component includes a lifting and focusing motor 53, a lead screw transmission module and a guide rod. The lifting and focusing motor 53 is connected to the guide rod through the lead screw transmission module, and the first image collector is slidably installed on the guide rod.

[0044] In one possible implementation, refer to Figure 1 Combined with Figure 5 The lifting and focusing motor 53 is installed on the top of the working support frame 2, and is connected to the screw transmission module through a pulley assembly. The guide rod is connected to the slider in the screw module. The first image collector is slidably installed on the guide rod. By controlling the forward and reverse rotation of the lifting and focusing motor 53, the guide rod can drive the first image collector to rise and fall.

[0045] In some embodiments, the visual centering mechanism further includes a camera mounting seat 51 and a camera base mounting module 52, the upper centering camera 5 is mounted on the camera base mounting module 52 through the camera mounting seat 51, and the camera base mounting module 52 is mounted on the guide rod. Exemplarily, the guide rod extends along the X direction, and the guide rod is provided with a camera base mounting module 52 extending along the X direction, such as a guide rail, and the upper centering camera 5 is slidably connected to the guide rail to avoid the alignment mark O on the image acquisition card 4.

[0046] In the second aspect, the embodiment of the utility model also provides a camera assembly device, including any camera active focus device as in the embodiment of the first aspect, and also including a camera base fixture 8 and a motion mechanism; the camera base fixture 8 is installed on the frame through the motion mechanism, and is used to fix the camera base 81; along the first direction, the motion mechanism is located between the lens clamping mechanism and the second image collector; the motion mechanism drives the camera base fixture 8 to align with the alignment mark O along the first direction.

[0047] One possible way to achieve this is as follows: Figure 4-7 As shown, the motion mechanism is installed on the working base 1, and along the first direction, the alignment mark O, the first image collector, the lens clamping mechanism, the camera base fixture 8, the motion mechanism and the second image collector are arranged in sequence. The lens clamping mechanism is used to clamp the lens 31; the camera base fixture 8 is used to fix the camera base 81; the main function of the visual centering mechanism is to use the alignment mark O as the intermediate reference to align the lens clamping mechanism and the camera base fixture 8 along the first direction, so as to achieve absolute concentricity between the lens 31 clamped by the lens clamping mechanism and the camera base 81 fixed by the camera base fixture 8, so as to ensure the assembly accuracy of the lens 31 and the camera base 81.

[0048] After the visual centering channel on the lens clamp 3 and the alignment mark O on the image acquisition card 4 are aligned; the camera base 81 is placed in the camera base fixture 8, the lens clamping mechanism clamps the lens 31, and the image sensor in the camera base 81 collects image information of the alignment mark O and records it as the third image information. The motion mechanism adjusts the position of the camera base fixture 8 according to the third image information so that the camera base 81, the lens 31 and the alignment mark O are absolutely concentric. At this time, the glue dispensing operation can be performed to complete the assembly of the lens 31 and the camera base 81.

[0049] In some embodiments, the motion mechanism includes a second direction adjustment component and a third direction adjustment component, the second direction adjustment component is installed on the frame, and the third direction adjustment component is installed on the second direction adjustment component; the camera base fixture is installed on the third direction adjustment component; the second direction adjustment component is used to drive the third direction adjustment component to move along the second direction, and the third direction adjustment component is used to drive the camera base fixture to move along the third direction; the second direction and the third direction are both perpendicular to the first direction.

[0050] In one possible implementation, the motion mechanism includes a second direction adjustment component and a third direction adjustment component, the second direction adjustment component is installed on the working base 1, and the third direction adjustment component is installed on the second direction adjustment component; the camera base fixture 8 is installed on the third direction adjustment component; the second direction adjustment component is used to drive the third direction adjustment component to move along the second direction, and the third direction adjustment component is used to drive the camera base fixture 8 to move along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0051] It can be understood that the first direction, the second direction and the third direction are perpendicular to each other, which can be understood as: if the plane determined by the second direction and the third direction is defined as a horizontal plane, the third direction is a vertical direction.

[0052] It should be noted that the main function of the second direction adjustment component is to drive the third direction adjustment component to move linearly along the second direction. Therefore, any structure that can achieve the above function can be used as the second direction adjustment component in this embodiment, such as a gear rack structure, a cylinder, a hydraulic cylinder, an electric push rod, and a linear motor. Similarly, the main function of the third direction adjustment component is to drive the camera base fixture 8 to move linearly along the third direction. Therefore, any structure that can achieve the above function can be used as the third direction adjustment component in this embodiment, such as a gear rack structure, a cylinder, a hydraulic cylinder, an electric push rod, and a linear motor.

[0053] In some embodiments, the second direction adjustment component includes a second direction linear motor; and / or,

[0054] The third direction adjustment component includes a third direction linear motor.

[0055] It should be noted that a linear motor, also known as a linear motor, is a transmission device that directly converts electrical energy into linear motion mechanical energy without the need for any intermediate conversion mechanism. Linear motors have the characteristics of simple structure, high positioning accuracy, fast response speed, high sensitivity, good follow-up, safe and reliable operation, and long life.

[0056] One possible way to achieve this is as follows: Figure 6 As shown, the second direction adjustment component and the third direction adjustment component both adopt a linear motor structure, that is, the second direction adjustment component includes a Y-axis linear motor 911, and the third direction adjustment component includes an X-axis linear motor 921.

[0057] In some embodiments, the camera assembly device also includes a lens jig 33, which is installed on a third direction adjustment component and is used to fix the lens 31; the second direction adjustment component and the third direction adjustment component cooperate to adjust the position of the lens jig 33 relative to the lens clamping mechanism so that the lens clamping mechanism clamps the lens 31 fixed on the lens jig 33.

[0058] In one possible implementation, refer to Figure 6 and Figure 7 The camera assembly equipment also includes a lens fixture 33. The lens fixture 33 and the camera base 81 are both mounted on an X-axis linear motor 921. The X-axis linear motor 921 is mounted on a Y-axis linear motor 911. The camera base 81 is placed in the camera base fixture 8, and the lens 31 is placed in the lens fixture 33. The motion structure of the X-axis linear motor 921 and the Y-axis linear motor 911 can be used to adjust the position of the camera base 81 and the material picking and placing motion of the lens 31 in the XY direction.

[0059] In some embodiments, the camera assembly device includes at least two motion mechanisms, and a camera base fixture 8 and a lens fixture 33 are correspondingly installed on each motion mechanism.

[0060] In one possible implementation, refer to Figure 4The camera assembly equipment has two motion mechanisms, namely the first motion mechanism 91 and the second motion mechanism 92, which are respectively fixed on the left and right sides of the working base 1, and are mainly used for switching operation between left and right workstations. The first motion mechanism 91 and the second motion mechanism 92 can use the lens clamping mechanism to clamp the lens 31 of the camera in an alternating staggered manner and perform the centering operation under the action of the visual centering mechanism. When one of them, such as the first motion mechanism 91, is centering, the other, such as the second motion mechanism 92, can be used to do other pre-sequence work, such as camera cleaning, gluing, pre-focusing and other operations. After the centering of the camera is completed, another group of cameras can be quickly moved to the visual centering mechanism for centering through the staggered cooperation of the first motion mechanism 91 and the second motion mechanism 92. Therefore, the centering efficiency and assembly efficiency can be greatly improved by designing two motion mechanisms.

[0061] The camera assembly device provided by the embodiment of the utility model first performs the debugging of the device, that is, the alignment mark O on the image acquisition card 4 and the lens on the lens clamp are debugged to be absolutely concentric, and then the camera base 81 in the camera base fixture 8 is debugged to be absolutely concentric with the alignment mark O, so that the lens on the lens clamp is absolutely concentric with the camera base 81 in the camera base fixture 8, and the debugging of the device is completed. After the debugging is completed, the two motion mechanisms are used to alternately operate to complete the assembly of the camera base 81 and the lens 31.

[0062] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A camera active focusing device, characterized in that: include: Frame, lens clamping mechanism and visual centering mechanism; The lens clamping mechanism is fixedly mounted on the frame and is used to clamp the lens; the lens clamping mechanism includes a visual centering channel; The visual centering mechanism comprises an image acquisition card, a first image acquisition device, a teleconverter and a second image acquisition device; the image acquisition card, the first image acquisition device, the teleconverter, the visual centering channel and the second image acquisition device are arranged in sequence along a first direction; the image acquisition card has an alignment mark; the first image acquisition device is slidably disposed on the frame and has a first acquisition port facing the visual centering channel; the teleconverter is slidably disposed on the frame; the teleconverter is centered with the visual centering channel along the first direction through the first image acquisition device; The second image collector has a second acquisition port facing the visual centering channel and the image acquisition card; The image acquisition card is installed on the rack in an adjustable position; The lens clamping mechanism is aligned with the alignment mark along the first direction through the second image collector.

2. The camera active focusing device according to claim 1, characterized in that: The lens clamping mechanism comprises a lens clamping claw and a lens hand clamp mounting seat, the lens clamping claw is mounted on the frame through the lens hand clamp mounting seat, and the clamping space of the lens clamping claw forms the visual centering channel.

3. The camera active focusing device according to claim 1 or 2, characterized in that: The visual centering mechanism also includes a teleconverter mounting seat; the teleconverter mounting seat is fixed to the frame, and along the first direction, the teleconverter mounting seat is located between the first image collector and the lens clamping mechanism; the teleconverter is slidably arranged on the teleconverter mounting seat.

4. The camera active focusing device according to claim 1, characterized in that: The first image collector and / or the second image collector is a centering camera.

5. The camera active focusing device according to claim 1, characterized in that: The first image collector is slidably mounted on the frame via a first direction adjustment component; The first direction adjustment component is used to drive the first image collector to approach or move away from the visual centering channel along the first direction.

6. The camera active focusing device according to claim 5, characterized in that: The first direction adjustment component includes a lifting and focusing motor, a lead screw transmission module and a guide rod. The lifting and focusing motor is connected to the guide rod through the lead screw transmission module, and the first image collector is slidably mounted on the guide rod.

7. A camera assembly device, characterized in that: It comprises the camera active focus device as described in any one of claims 1 to 6, and also comprises a camera base fixture and a motion mechanism; the camera base fixture is installed on the frame through the motion mechanism to fix the camera base; Along the first direction, the motion mechanism is located between the lens clamping mechanism and the second image collector; the motion mechanism drives the camera base fixture to align with the alignment mark along the first direction.

8. The camera assembly device according to claim 7, characterized in that: The motion mechanism comprises a second direction adjustment component and a third direction adjustment component, the second direction adjustment component is mounted on the frame, and the third direction adjustment component is mounted on the second direction adjustment component; the camera base fixture is mounted on the third direction adjustment component; The second direction adjustment component is used to drive the third direction adjustment component to move along the second direction, and the third direction adjustment component is used to drive the camera base fixture to move along the third direction; the second direction and the third direction are both perpendicular to the first direction.

9. The camera assembly device according to claim 8, characterized in that: The second direction adjustment component includes a second direction linear motor; and / or, The third direction adjustment component includes a third direction linear motor.

10. The camera assembly device according to claim 8, characterized in that: The camera assembly equipment also includes a lens jig, which is installed on the third direction adjustment component and is used to fix the lens; the second direction adjustment component and the third direction adjustment component cooperate to adjust the position of the lens jig relative to the lens clamping mechanism so that the lens clamping mechanism clamps the lens fixed on the lens jig.

11. The camera assembly device according to claim 10, characterized in that: The camera assembly equipment comprises at least two motion mechanisms, and the camera base fixture and the lens fixture are correspondingly mounted on each of the motion mechanisms.

Images