Automatic focusing mechanism by extracting high-frequency information of picture

Abstract

The utility model discloses an automatic focusing mechanism by extracting high-frequency information of a picture. The automatic focusing mechanism comprises a linear module I; the second linear module is arranged on one side of the first linear module, and a camera fixing part is arranged on the second linear module; the camera mechanism is arranged on the camera fixing part and is used for extracting high-frequency information of a picture; the focusing mechanism is arranged on one side of the camera mechanism and is used for adjusting focusing; the focusing mechanism comprises a friction wheel and a driving piece connected to the bottom of the friction wheel. According to the automatic focusing mechanism capable of extracting the high-frequency information of the picture provided by the utility model, through the mutual cooperation of the linear module I and the linear module II, when the servo motor drives the friction wheel to rotate and focus, the height and the front-back position of the high-frequency camera can be synchronously realized, and the automatic focusing of the camera is further facilitated; meanwhile, through the arrangement of the protection structure, the contact surface during driving can be protected when the friction wheel drives the zoom ring to perform rotary focusing.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic focusing, in particular to an automatic focusing mechanism which extracts high-frequency information of a picture. Background Art

[0002] Focusing refers to adjusting the focal distance when using a camera. The English scientific name is Focus. Usually digital cameras have multiple focusing modes, namely automatic focus, manual focus and multi-focus. Focusing is also called light adjustment and focusing. The process of changing the distance and distance between objects through the camera focus mechanism to make the image of the object clear is focusing.

[0003] For example, a Chinese utility model patent (CN 210348158 U) discloses an automatic focusing mechanism for a binocular camera, comprising a mobile platform module, a motor frame module, and a camera module; the mobile platform module comprises a mobile platform and casters; the motor frame module comprises a motor frame, a stepper motor, and a driving gear; there are two stepper motors, which are respectively mounted on two motor frames by bolts, and there are two driving gears, which are respectively mounted on two stepper motor shafts; the camera module comprises a camera, a fixed plate, a truncated table, a fixture, and a focus gear; there are two cameras, two fixed plates, two fixtures, and two focus gears, the camera is mounted on the fixed plate by bolts, the fixed plate is mounted on the fixture by a truncated table, the two fixtures are mounted on the same side of the mobile platform, the focus gear is fixed to the lens of the camera by interference fit, the focus ring rotates with the focus gear, the focus gear and the driving gear cooperate with each other, and the thickness of the focus gear is less than that of the driving gear.

[0004] However, when the inventors implemented this device, they found the following defects: since the above technical solution uses a gear to drive the focus ring for transmission, the relative driving mode is a meshing state. When implementing this driving mode, since the gears and the focus ring are both exposed to the outside, they are very susceptible to interference from external factors and affect their stable meshing drive, resulting in poor stability in the actual focusing use state. Utility Model Content

[0005] Based on this, it is necessary to provide an automatic focusing mechanism that extracts high-frequency information from images to address the above technical problems. In the process of focusing by relative engagement of the friction wheel and the zoom wheel, the protective structure can protect the engagement area, thereby avoiding interference from adverse external factors.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An automatic focusing mechanism by extracting high-frequency information of an image, comprising:

[0008] Linear module one;

[0009] A linear module 2, which is arranged on one side of the linear module 1, and the linear module 2 has a camera fixing part;

[0010] A camera mechanism, which is arranged on the camera fixing member and is used to extract high-frequency information of the image;

[0011] A focusing mechanism, which is arranged on one side of the camera mechanism and is used for adjusting the focus;

[0012] The focusing mechanism comprises a friction wheel and a driving member connected to the bottom of the friction wheel;

[0013] Wherein, the driving member is connected to the camera fixing member through a side frame;

[0014] The protective structure is jointly arranged on the camera mechanism and the focusing mechanism.

[0015] Further, the driving member includes a servo motor and a coupling connected to the output end of the servo motor;

[0016] The coupling is fixed to the bottom of the friction wheel, and the servo motor is fixedly installed on the side frame.

[0017] Furthermore, the side frame is fixedly mounted on the camera fixing member.

[0018] Furthermore, the camera mechanism comprises a high-frequency camera mounted on the camera fixing member, the high-frequency camera is provided with a zoom ring, and the friction wheel abuts against one side of the zoom ring to drive the zoom ring to rotate and zoom.

[0019] Furthermore, the linear module 1 includes a support seat, an adjustment motor connected to one side of the support seat, and an adjustment screw connected to an output end of the adjustment motor. An adjustment slider threadedly assembled with the adjustment screw is slidably provided on the support seat.

[0020] Furthermore, the second linear module comprises a second support base fixedly connected to one side of the adjusting slider, a second adjusting motor connected to one side of the second support base, and a second adjusting screw connected to the output end of the second adjusting motor;

[0021] Among them, the surface of the second support seat is slidably provided with an adjusting slider 2 threadedly assembled with the second adjusting screw rod, and the camera fixing part is connected to one side of the second adjusting slider.

[0022] Furthermore, the protection structure includes a shell, and two sides of the shell are respectively provided with a first accommodating groove and a second accommodating groove;

[0023] The shell is respectively sleeved on the corresponding zoom ring and friction wheel through the first accommodating groove and the second accommodating groove.

[0024] Furthermore, a support arm is connected to the surface of the shell for connecting with the side frame.

[0025] Furthermore, an upward opening of the accommodating groove is movably connected to a rotating ring via a bearing, and a connecting ring is fixed to the top of the rotating ring.

[0026] Furthermore, an embedding groove is formed in the connecting ring, and a sealing rubber ring is embedded in the embedding groove;

[0027] Wherein, the inner side of the sealing rubber ring contacts the surface of the zoom ring to form a seal.

[0028] Compared with the prior art, the utility model has the following beneficial effects:

[0029] The utility model provides an automatic focusing mechanism that extracts high-frequency information of an image, and through the cooperation between the linear module 1 and the linear module 2, can synchronously adjust the height and front-back position of the high-frequency camera before the servo motor drives the friction wheel to rotate and focus, so that the pre-focus area can be adjusted according to different objects to be detected, which is conducive to more convenient subsequent automatic focusing of the high-frequency camera;

[0030] At the same time, the protection structure is provided to ensure that when the friction wheel drives the zoom ring to rotate and focus, the contact surface during driving can be protected, thereby avoiding external influences and interference and ensuring the stability of focusing. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the structure of the automatic focusing mechanism provided by the utility model by extracting high-frequency information of an image;

[0032] Figure 2 A schematic diagram of the side view structure of the automatic focusing mechanism provided by the utility model by extracting high-frequency information of an image;

[0033] Figure 3 A right-view structural schematic diagram of an automatic focusing mechanism for extracting high-frequency information of an image provided by the utility model;

[0034] Figure 4 A schematic diagram of the protective structure of the automatic focusing mechanism provided by the utility model by extracting high-frequency information of an image;

[0035] Figure 5 A schematic diagram of the structure of the protective structure of the automatic focusing mechanism provided by the utility model for extracting high-frequency information of an image in use;

[0036] Figure 6 A schematic diagram of the protective structure of the automatic focusing mechanism provided by the utility model by extracting high-frequency information of an image;

[0037] Figure 7 A schematic diagram of the disassembled structure of the protective structure of the automatic focusing mechanism provided by the utility model by extracting high-frequency information of an image.

[0038] The markings in the figure are as follows:

[0039] Linear module 1, support seat 11, adjustment motor 12, adjustment screw rod 13, adjustment slider 14;

[0040] Linear module 2 2, support seat 2 21, adjustment motor 2 22, adjustment screw rod 2 23, adjustment slider 2 24, camera fixing part 26;

[0041] Camera mechanism 3, high frequency camera 31, zoom ring 32;

[0042] Focusing mechanism 4, friction wheel 41, driving member 42, side frame 43;

[0043] Servo motor 420, coupling 421;

[0044] Protective structure 5, shell 51, accommodating groove 1 52, accommodating groove 2 53, rotating ring 54, connecting ring 55, embedding groove 56, sealing rubber ring 57, supporting arm 58. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0046] As mentioned in the background technology, since the traditional technology adopts gear-driven focus ring for transmission, the relative driving mode is in a meshing state. When implementing this driving mode, since the gears and the focus ring are both exposed to the outside, they are very susceptible to interference from external factors and affect their stable meshing drive, resulting in poor stability in the actual focusing use state.

[0047] In order to solve this technical problem, the utility model provides an automatic focusing mechanism by extracting high-frequency information of an image, which is applied to automatic focusing.

[0048] Specifically, please refer to Figure 1-Figure 7 The autofocus mechanism that extracts high-frequency information from images specifically includes:

[0049] Linear module 1;

[0050] The linear module 2 2 is disposed on one side of the linear module 1 , and the linear module 2 2 has a camera fixing member 26;

[0051] A camera mechanism 3, which is arranged on the camera fixing member 26 and is used to extract high-frequency information of the image;

[0052] A focus mechanism 4, which is arranged on one side of the camera mechanism 3 and is used for adjusting the focus;

[0053] The focusing mechanism 4 includes a friction wheel 41 and a driving member 42 connected to the bottom of the friction wheel 41;

[0054] The driving member 42 is connected to the camera fixing member 26 via the side frame 43 .

[0055] The utility model provides an automatic focusing mechanism that extracts high-frequency information of an image. Through the cooperation between the linear module 1 and the linear module 2 2, when the servo motor 420 drives the friction wheel 41 to rotate and focus, the height and front and back positions of the high-frequency camera 31 can be synchronously realized, which is further beneficial to the automatic focusing of the camera.

[0056] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0057] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0058] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0059] Please refer to Figure 1 , Figure 2 and Figure 3 As shown, an automatic focusing mechanism for extracting high-frequency information of an image comprises a linear module 1; a linear module 2 2, which is arranged at one side of the linear module 1, and the linear module 2 2 has a camera fixing part 26; a camera mechanism 3, which is arranged on the camera fixing part 26 for extracting high-frequency information of the image; a focusing mechanism 4, which is arranged at one side of the camera mechanism 3 for adjusting the focus; the focusing mechanism 4 comprises a friction wheel 41 and a driving member 42 connected to the bottom of the friction wheel 41, wherein the driving member 42 is connected to the camera fixing part 26 via a side frame 43.

[0060] Please refer to Figure 2 , the driving member 42 includes a servo motor 420 and a coupling 421 connected to the output end of the servo motor 420;

[0061] The coupling 421 is fixed to the bottom of the friction wheel 41, the servo motor 420 is fixedly mounted on the side frame 43, and the side frame 43 is fastened to the camera fixing member 26;

[0062] The camera mechanism 3 includes a high-frequency camera 31 mounted on the camera fixing member 26, and the high-frequency camera 31 has a zoom ring 32, and the friction wheel 41 abuts against one side of the zoom ring 32 to drive it to rotate and zoom;

[0063] Before actual autofocusing, an external computer device receives the image information captured by the high-frequency camera 31, and obtains actual focus data after calculation by the external computer system. The data drives the corresponding servo motor 420 to drive the coupling 421 to rotate, so that the coupling 421 drives the friction wheel 41 to rotate. Since the friction wheel 41 and the zoom ring 32 are in a state of conflict, the zoom ring 32 will rotate synchronously, thereby achieving effective side focus.

[0064] The above-mentioned calculation of focus data using captured image information collected by an external computer device is a mature and complete prior art, so it is not further elaborated in this embodiment. For details, reference may be made to a binocular camera automatic focusing mechanism disclosed in Chinese utility model patent CN 210348158 U.

[0065] The automatic focusing mechanism provided in Example 1 by extracting high-frequency information of an image is further optimized. Specifically, Figure 4 As shown, the linear module 1 includes a support base 11, an adjustment motor 12 connected to one side of the support base 11, and an adjustment screw 13 connected to the output end of the adjustment motor 12. An adjustment slider 14 threadedly assembled with the adjustment screw 13 is slidably provided on the support base 11;

[0066] The linear module 2 includes a support seat 21 fixedly connected to one side of the adjusting slider 14, an adjusting motor 22 connected to one side of the support seat 21, and an adjusting screw rod 23 connected to the output end of the adjusting motor 22;

[0067] Among them, an adjusting slider 24 threadedly assembled with the adjusting screw rod 23 is slidably provided on the surface of the supporting seat 21 , and a camera fixing part 26 is connected to one side of the adjusting slider 24 .

[0068] Through the above-mentioned structural design, the initial position of the high-frequency camera 31 can be adjusted according to different inspection objects to be photographed. Specifically, the adjusting motor 12 can be started to drive the adjusting screw 13 to rotate, so that the adjusting screw 13 drives the adjusting slider 14 thereon to slide along the height of the support seat 11, thereby adjusting the height of the high-frequency camera 31 on the linear module 2. Similarly, the adjusting motor 22 can be started to drive the adjusting screw 23 to rotate, so that the adjusting screw 23 drives the adjusting slider 24 to slide along the surface of the support seat 21, so as to drive the camera fixing part 26 connected thereto to adjust the front and rear position. The actual adjustment situation can be pre-adjusted according to the actual situation of the object to be inspected, so that the subsequent zoom ring 32 can be adjusted to a suitable focus position.

[0069] The automatic focusing mechanism provided in Embodiment 1 or 2 by extracting high-frequency information of an image is further optimized, such as Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a protective structure 5 is provided on the camera mechanism 3 and the focus mechanism 4;

[0070] The protection structure 5 includes a shell 51, and two sides of the shell 51 are respectively provided with a first receiving groove 52 and a second receiving groove 53;

[0071] The housing 51 is respectively mounted on the corresponding zoom ring 32 and the friction wheel 41 through the first receiving groove 52 and the second receiving groove 53;

[0072] The zoom ring 32 and the friction wheel 41 can rotate in the corresponding receiving groove 1 52 and receiving groove 2 53 respectively;

[0073] A support arm 58 is connected to the surface of the housing 51 for connecting with the side frame 43;

[0074] The upward opening of the receiving groove 1 52 is movably connected to a rotating ring 54 through a bearing, and a connecting ring 55 is fixed to the top of the rotating ring 54;

[0075] An embedding groove 56 is formed in the connecting ring 55 , and a sealing rubber ring 57 is embedded in the embedding groove 56 , wherein the inner side of the sealing rubber ring 57 abuts against the surface of the zoom ring 32 to form a seal.

[0076] When the servo motor 420 is started to drive the coupling 421 and the friction wheel 41 thereon to rotate, the rotating friction wheel 41 will drive the zoom ring 32 abutting against one side thereof to rotate, thereby realizing the zoom adjustment of the high-frequency camera 31;

[0077] During the zoom adjustment process, since the sealing rubber ring 57 is in contact with the surface of the high-frequency camera 31, it can effectively block external dust particles, improve the cleanliness of the contact surface between the friction wheel 41 and the zoom ring 32, avoid external interference, and ensure the stability of the zoom adjustment.

[0078] The use process of the automatic focusing mechanism provided by the utility model by extracting high-frequency information of the image is as follows: the adjustment of the linear module 1 and the linear module 2 2 is pre-adjusted according to the object to be detected, so that the high-frequency camera 31 thereon is located at a suitable position, and then the high-frequency camera 31 transmits the image picture it has collected to the external computer device, and drives the servo motor 420 to rotate through calculation, so that the coupling 421 thereon drives the friction wheel 41 thereon to form a conflict with the zoom ring 32, thereby forming a focus on the high-frequency camera 31. In the above-mentioned focusing process, the protective structure 5 can protect the friction wheel 41 and the zoom ring 32, avoid external influences, and ensure stability during zooming.

[0079] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. An automatic focusing mechanism by extracting high-frequency information of an image, characterized in that: It includes: Linear module one (1); A second linear module (2), which is arranged on one side of the first linear module (1), and the second linear module (2) has a camera fixing member (26); A camera mechanism (3) disposed on the camera fixing member (26) and used for extracting high-frequency information of the image; A focusing mechanism (4), which is arranged on one side of the camera mechanism (3) and is used for adjusting the focus; The focusing mechanism (4) comprises a friction wheel (41) and a driving member (42) connected to the bottom of the friction wheel (41); Wherein, the driving member (42) is connected to the camera fixing member (26) via a side frame (43); A protective structure (5) is provided on the camera mechanism (3) and the focusing mechanism (4).

2. The automatic focusing mechanism by extracting high-frequency information of an image according to claim 1, characterized in that: The driving member (42) comprises a servo motor (420) and a coupling (421) connected to an output end of the servo motor (420); The coupling (421) is fixed to the bottom of the friction wheel (41), and the servo motor (420) is fixedly mounted on the side frame (43).

3. The automatic focusing mechanism by extracting high-frequency information of an image according to claim 2, characterized in that: The side frame (43) is fixedly mounted on the camera fixing member (26).

4. The automatic focusing mechanism by extracting high-frequency information of an image according to claim 1, characterized in that: The camera mechanism (3) comprises a high-frequency camera (31) mounted on the camera fixing member (26), the high-frequency camera (31) having a zoom ring (32), and the friction wheel (41) abuts against one side of the zoom ring (32) to drive the zoom ring to rotate and zoom.

5. The automatic focusing mechanism by extracting high-frequency information of an image according to claim 1, characterized in that: The linear module 1 (1) comprises a support seat (11), an adjustment motor (12) connected to one side of the support seat (11), and an adjustment screw (13) connected to the output end of the adjustment motor (12); an adjustment slider (14) threadedly assembled with the adjustment screw (13) is slidably provided on the support seat (11).

6. The automatic focusing mechanism by extracting high-frequency information of an image according to claim 5, characterized in that: The linear module 2 (2) comprises a support seat 2 (21) fixedly connected to one side of the adjusting slider (14), an adjusting motor 2 (22) connected to one side of the support seat 2 (21), and an adjusting screw rod 2 (23) connected to the output end of the adjusting motor 2 (22); The surface of the second support seat (21) is slidably provided with an adjustment slider (24) threadedly assembled with the second adjustment screw rod (23), and the camera fixing member (26) is connected to one side of the adjustment slider (24).

7. The automatic focusing mechanism by extracting high-frequency information of an image according to claim 1, characterized in that: The protective structure (5) comprises a shell (51), and two sides of the shell (51) are respectively provided with a first accommodating groove (52) and a second accommodating groove (53); The housing (51) is respectively sleeved on the corresponding zoom ring (32) and the friction wheel (41) via a first accommodating groove (52) and a second accommodating groove (53).

8. The automatic focusing mechanism by extracting high-frequency information of an image according to claim 7, characterized in that: A support arm (58) is connected to the surface of the housing (51) for connecting to the side frame (43).

9. The automatic focusing mechanism by extracting high-frequency information of an image according to claim 8, characterized in that: The upward opening of the first accommodating groove (52) is movably connected to a rotating ring (54) via a bearing, and a connecting ring (55) is fixed to the top of the rotating ring (54).

10. The automatic focusing mechanism by extracting high-frequency information of an image according to claim 9, characterized in that: An embedding groove (56) is formed in the connecting ring (55), and a sealing rubber ring (57) is embedded in the embedding groove (56); The inner side of the sealing rubber ring (57) contacts the surface of the zoom ring (32) to form a seal.

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