Rolling support adapter ring for realizing automatic focusing of manual focusing lens

Abstract

The utility model provides a rolling support adapter ring for realizing automatic focusing of a manual focusing lens, which comprises an adapter ring body, a camera connecting piece, a lens connecting piece, a driving device and a controller, and is characterized in that the controller is electrically connected with the driving device and a lens control unit of a camera connected with the camera connecting piece; the lens connecting piece comprises an annular connecting part and a transmission part which are integrally formed, the transmission part is in transmission connection with the driving device, a rolling supporting assembly is further arranged in the mounting groove and works in cooperation with the transmission part, so that the lens connecting piece moves in the optical axis direction of the lens, and the notch position of the mounting groove is further connected with a protective cover. The annular connecting part is further provided with a lens release button, the mounting ring is provided with an elastic piece corresponding to the lens release button, and the adapter ring body is further provided with a USB interface and a power module. According to the adapter ring provided by the utility model, the lens connecting piece can roll and move, so that the movement of the lens is smoother and more accurate, and the shooting reliability and effect are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to camera auxiliary device technical field, concretely relates to a kind of rolling support adapter ring for realizing automatic focusing of manual focusing lens. BACKGROUND

[0002] Nowadays, more and more people like photography and digital camera, and many enthusiasts hope to experience the shooting experience brought by other lenses of different brands on the original camera, which requires a device for converting different brands of cameras and lenses, i.e. an adapter ring. The adapter ring can connect different brands of lenses and cameras for shooting, greatly increasing the lens resources and better playing the role of other series of bayonet lenses.

[0003] The manual lens adapter ring can connect different brands of cameras and manual lenses together to meet different photography needs. After the manual lens is installed on the camera through the adapter ring, the distance between the lens group and the photosensitive plane is adjusted by rotating the focusing ring outside the manual lens to focus on different subjects. During focusing, the photographer needs to observe the imaging through the viewfinder and press the shutter after confirming that the subject is clearly imaged, and the shooting is completed. However, this focusing method largely depends on the judgment of the image on the focusing screen by the human eye, as well as the proficiency and vision of the photographer, which has high requirements for shooting and is not convenient to use. Although a camera capable of automatic focusing of lenses was invented in the 1980s, it can only realize automatic focusing on specific automatic focusing lenses and cannot realize the automatic focusing function of manual lenses.

[0004] Although there are some adapter rings that can automatically focus manual lenses on the market, these adapter rings use a sliding structure of moving group and fixed group to realize the forward and backward movement of the moving group. Although the sliding structure realizes the basic forward and backward movement of the moving group, the movement is not very smooth due to the large sliding friction, which may cause the movement to be out of place sometimes, affecting the focusing position of the lens and making the photographed photos blurred. In addition, the sliding structure has very high requirements for product size and assembly relationship, and inappropriate size or assembly relationship may cause the moving group to jam or even be stuck. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of rolling support adapter ring for realizing automatic focusing of manual focusing lens, which improves the traditional sliding structure to rolling structure, reduces the movement resistance, and makes the lens movement more smooth and accurate.

[0006] To solve the above technical problems, the utility model realizes the following technical scheme:

[0007] The application discloses a rolling support adapter ring for realizing automatic focusing of a manual focusing lens, which comprises an adapter ring body, the adapter ring body comprises an integrated mounting ring and a mounting groove, one side of the mounting ring is provided with a camera connector, the other side is provided with a lens connector, the mounting groove is provided with a driving device, the adapter ring body is further provided with a controller, the controller is electrically connected with the driving device and a lens control unit of a camera connected to the camera connector, the lens connector comprises an integrated annular connecting part and a transmission part, the annular connecting part is connected with the mounting ring, the transmission part is in transmission connection with the driving device, the mounting groove is further provided with a rolling support assembly, and the rolling support assembly works in cooperation with the transmission part to move the lens connector along the optical axis direction of the lens, the slot opening of the mounting groove is further connected with a protective cover, the annular connecting part is further provided with a lens release button, the mounting ring is provided with an elastic sheet corresponding to the lens release button, the bottom end of the lens release button is in contact with the elastic sheet, and the adapter ring body is further provided with a USB interface and a power module, and the USB interface and the power module are electrically connected with the controller.

[0008] As preferred, the driving device comprises a motor, a motor accommodating groove is formed between the protective cover and the mounting groove, a gear is connected to the rotating shaft of the motor, a transmission block is formed on the transmission part, a rack meshing with the gear is arranged on the transmission block, an arc transition surface is formed on one side of the transmission part, a rolling support assembly is arranged on the mounting groove corresponding to the arc transition surface, and a limiting groove for the movement of the transmission part and the rolling support assembly is arranged in the protective cover.

[0009] As preferred, the transmission block is located on the middle side of the transmission part and above the gear, a guide groove is arranged at the lower end of the transmission part, and a rolling support assembly is arranged on the mounting groove corresponding to the guide groove.

[0010] As preferred, the transmission block is located on the bottom end side of the transmission part and below the gear, a guide column is further arranged on the transmission part, one end of the guide column is fixed in the mounting groove, and the other end is arranged in the groove of the protective cover.

[0011] As preferred, a protective gasket is sleeved on the guide column.

[0012] As preferred, a guide part is further arranged on the lens connector, the guide part is located below the annular connecting part and above the motor, a guide groove is arranged on the guide part, and a rolling support assembly is arranged on the mounting groove corresponding to the guide groove.

[0013] As preferred, the rolling support assembly comprises a support seat, the support seat is fixed on the mounting groove, a rolling block is rotatably connected to the support seat, and the rolling block is guided to roll in the corresponding guide groove or arc transition surface.

[0014] As preferred, the controller comprises a control circuit board and a plurality of contact pins, the contact pins are arranged on an arc-shaped fixing block, the arc-shaped fixing block is connected with the camera connecting member, the control circuit board is located between the camera connecting member and the lens connecting member, and one end of the control circuit board extends to the side of the mounting groove and is connected with the USB interface and the power module, one end of the contact pin is connected with the control circuit board, and the other end of the contact pin is connected with the contact of the lens control unit of the camera.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] (1) The utility model discloses a mounting ring design, which facilitates the stable installation of the lens connecting member and the camera connecting member, and the cooperation of the mounting groove and the protective cover can effectively install the driving device, the rolling support assembly and other accessories, thereby making the whole adapter ring connecting structure more compact.

[0017] (2) The design of the rolling support assembly facilitates assembly and supports the lens connecting member, and plays a guiding role in the movement of the lens connecting member, so that the lens connecting member can move in a rolling manner, thereby driving the manual lens on the lens connecting member to move smoothly to realize automatic focusing, and the rolling movement reduces the movement resistance, making the lens movement smoother and more accurate, and improving the shooting reliability and effect.

[0018] (2) Through the cooperation of the camera connecting member and the lens connecting member, the controller can receive the control information sent by the lens control unit of the camera, process the received information and issue a focusing instruction, thereby controlling the driving device to move, driving the lens connecting member to move along the optical axis direction of the lens, completing the extension and retraction of the lens, changing the horizontal distance between the lens and the camera, thereby realizing the automatic focusing of the manual lens, facilitating use, and enabling lenses of different models or brands to be used on different cameras. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is a structural schematic view of the utility model;

[0020] Fig. 2 It is a split structure schematic view of the utility model;

[0021] Fig. 3 It is a split structure schematic view of part of the positions in the utility model.

[0022] In the diagram: 1-Adapter ring body; 2-Camera connector; 3-Lens connector; 4-Protective cover; 5-Lens release button; 6-Elastic sheet; 7-USB interface; 8-Motor; 9-Gear; 10-Guide post; 11-Support base; 12-Rolling block; 13-Control circuit board; 14-Contact pin; 15-Arc-shaped fixing block; 101-Mounting ring; 102-Mounting groove; 301-Annular connecting part; 302-Transmission part; 303-Transmission block; 304-Rack; 305-Arc-shaped transition surface; 306-Guide part. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] like Figs. 1-3 As shown, a rolling support adapter ring for achieving autofocus on a manual focus lens includes an adapter ring body 1. The adapter ring body 1 includes an integrally formed mounting ring 101 and a mounting groove 102. A camera connector 2 is provided on one side of the mounting ring 101, and a lens connector 3 is provided on the other side. A driving device is provided in the mounting groove 102. A controller is also provided on the adapter ring body 1. The controller is electrically connected to the driving device and the lens control unit of the camera connected to the camera connector 2. The lens connector 3 includes an integrally formed annular connecting part 301 and a transmission part 302. The annular connecting part 301 is connected to the mounting ring 2. The ring 101 is connected to the drive unit 302, which is connected to the drive device. A rolling support assembly is also provided in the mounting groove 102, and the rolling support assembly works with the drive unit 302 to move the lens connector 3 along the optical axis of the lens. A protective cover 4 is also connected to the groove opening of the mounting groove 102. A lens release button 5 is also provided on the annular connection part 301. An elastic piece 6 is provided on the mounting ring 101 corresponding to the lens release button 5, and the bottom end of the lens release button 5 contacts the elastic piece 6. A USB interface 7 and a power module are also provided on the adapter ring body 1, and both are electrically connected to the controller.

[0025] In use, through cooperation and installation of the camera connecting piece 2 and the lens connecting piece 3 by the controller, the controller can receive focusing information sent by a lens control unit of the camera, the controller processes the received information and sends a focusing instruction, and then controls the driving device to act, the driving device drives the transmission part 302 to move, thereby driving the lens connecting piece 3 to move along the optical axis direction of the lens, at this time, the rolling support assembly also rolls in cooperation with the lens connecting piece 3, plays a guiding role, and can stably complete the extension and contraction of the lens, change the horizontal distance between the lens and the camera, and thus realize automatic focusing of the manual lens, which is convenient to use.

[0026] The installation groove 102 and the protective cover 4 are cooperatively designed, the driving device, the rolling support assembly and other accessories can be effectively installed, and thus the whole adapter ring connecting structure is more compact; the rolling support assembly is designed, on the one hand, assembly is more convenient, the lens connecting piece 3 is supported, and on the other hand, the movement of the lens connecting piece 3 is guided, the lens connecting piece 3 can roll and move, the manual lens on the lens connecting piece 3 is driven to move smoothly to realize automatic focusing, movement resistance is reduced through rolling movement, lens movement is smoother and more accurate, and shooting reliability and effect are improved; through cooperation and installation of the camera connecting piece 2 and the lens connecting piece 3 by the controller, the controller can receive control information sent by a lens control unit of the camera, the controller processes the received information and sends a focusing instruction, and then controls the driving device to act, the driving device drives the lens connecting piece 3 to move along the optical axis direction of the lens, the extension and contraction of the lens are completed, the horizontal distance between the lens and the camera is changed, and thus automatic focusing of the manual lens is realized, which is convenient to use, different models or brands of lenses can be used on different cameras, and the adapter ring as an external component of the camera does not increase the volume of the camera itself.

[0027] Further, the driving device comprises a motor 8, a motor accommodating groove is formed between the protective cover 4 and the installation groove 102, a gear 9 is connected to a rotating shaft of the motor 8, a transmission block 303 is formed on the transmission part 302, a rack 304 meshing with the gear 9 is arranged on the transmission block 303, an arc transition surface 305 is formed on one side of the transmission part 302, a rolling support assembly is arranged on the installation groove 102 at a position corresponding to the arc transition surface 305, and a limiting groove for movement of the transmission part 302 and the rolling support assembly is arranged in the protective cover 4. Through the transmission mode of the gear 9 and the rack 304, the design is simple and easy to operate, the arc transition surface 305 can improve the rolling smoothness between the transmission part 302 and the rolling support assembly and improve the guiding effect, and thus the stability of lens extension and contraction operation is improved.

[0028] Further, as shown in FIG. 6, the adapter ring 1 comprises a rolling support assembly 6, the rolling support assembly 6 comprises a rolling support 601 and a rolling support 602, the rolling support 601 is arranged on one side of the transmission part 302, the rolling support 602 is arranged on the other side of the transmission part 302, and the rolling support 601 and the rolling support 602 are arranged on the arc transition surface 305. Fig. 2As shown, the transmission block 303 is located at the middle side of the transmission part 302 and above the gear 9, the lower end of the transmission part 302 is provided with a guide groove, and the installation groove 102 is provided with a rolling support assembly corresponding to the guide groove. The above design, through the guide groove and the rolling support assembly cooperating with the rolling operation, on the one hand, can support the lens connecting piece 3, and on the other hand, can improve the guiding effect when the lens moves, so that the movement of the lens connecting piece 3 is more accurate.

[0029] Further, as shown in the drawings, Fig. 3 As shown, the transmission block 303 is located at the bottom end side of the transmission part 302 and below the gear 9, the transmission part 302 is further provided with a guide column 10, one end of the guide column 10 is fixed in the installation groove 102, the other end is placed in the groove of the protective cover 4, and the guide column 10 is sleeved with a protective gasket. The above design, through the double cooperation of the guide column 10 and the rolling support assembly, can make the movement of the lens connecting piece 3 more stable and accurate, improve the use effect, at the same time, the design of the protective gasket can reduce the wear of the guide column 10, so as to ensure the accuracy of the lens movement.

[0030] Further, the lens connecting piece 3 is further provided with a guide part 306, the guide part 306 is located below the annular connecting part 301 and above the motor 8, the guide part 306 is provided with a guide groove, and the installation groove 102 is provided with a rolling support assembly corresponding to the guide groove. The above design, through the guide part 306 and the rolling support assembly cooperating with the rolling operation, on the one hand, can support the lens connecting piece 3, and on the other hand, can improve the guiding effect when the lens moves, so that the movement of the lens connecting piece 3 is more accurate.

[0031] Further, the rolling support assembly includes a support seat 11, the support seat 11 is fixed on the installation groove 102, the support seat 11 is rotatably connected with a rolling block 12, and the rolling block 12 is guided and rolled with the corresponding guide groove or arc-shaped transition surface 305. The above design, simple structure, convenient assembly, not only can play a supporting role, but also can make the rolling block 12 guided and rolled with the corresponding guide groove or arc-shaped transition surface 305, compared with the traditional guide column structure mode of movement, the assembly is simpler, and the use accuracy is better.

[0032] Further, the controller comprises a control circuit board 13 and a plurality of contact pins 14, the contact pins 14 are arranged on an arc-shaped fixing block 15, the arc-shaped fixing block 15 is fixedly connected with the camera connecting member 2, the control circuit board 13 is located between the camera connecting member 2 and the lens connecting member 3, and one end of the control circuit board 13 extends to the side of the mounting groove 102 and is connected with the USB interface 7 and the power module, one end of the contact pin 14 is connected with the control circuit board, and the other end of the contact pin 14 is connected with the contact of the lens control unit of the camera. The above design can make the overall structure of the adapter ring more compact and the appearance more beautiful; the contact pin 14 is connected with the contact of the lens control unit of the camera, data and instruction exchange is carried out between the camera and the control circuit board 13, the control circuit board 13 controls the driving motor 8 to move according to the received information, so as to complete the automatic focusing work.

[0033] Specifically, the motor 8 can be a servo motor, the speed and position accuracy of which are controlled more accurately, so that the movement of the manual lens is more accurate.

[0034] The camera connecting member 2 is provided with a Hall sensor electrically connected with the controller, the lens connecting member 3 is provided with a magnet arranged opposite to the Hall sensor, through cooperation of the Hall sensor and the magnet, the change of the magnetic field strength is detected, and the collected information is sent to the controller, so as to realize accurate control of the moving distance of the lens connecting member.

[0035] The USB interface 7 can be used for software upgrading of the controller.

[0036] The above is only the preferred embodiment of the present application, and does not limit the implementation and protection scope of the present application; for those skilled in the art, it should be realized that any equivalent replacement and obvious change obtained by using the content of the present application can be included in the protection scope of the present application.

Claims

1. A rolling support adapter ring for achieving autofocus on a manual focus lens, characterized in that: The adapter ring body comprises an integral mounting ring and a mounting groove, one side of the mounting ring is provided with a camera connector, the other side is provided with a lens connector, the mounting groove is provided with a driving device, the adapter ring body is further provided with a controller, the controller is electrically connected with the driving device and the lens control unit of the camera connected to the camera connector, the lens connector comprises an integral annular connecting part and a transmission part, the annular connecting part is connected with the mounting ring, the transmission part is drivingly connected with the driving device, the mounting groove is further provided with a rolling support assembly, and the rolling support assembly cooperates with the transmission part to move the lens connector along the optical axis direction of the lens, the slot opening of the mounting groove is further connected with a protective cover, the annular connecting part is further provided with a lens release button, the mounting ring is provided with an elastic sheet corresponding to the lens release button, and the bottom end of the lens release button is in contact with the elastic sheet, the adapter ring body is further provided with a USB interface and a power module, and both are electrically connected with the controller.

2. The rolling support adapter ring for implementing auto-focusing of a manual focusing lens according to claim 1, wherein: The driving device comprises a motor, a motor accommodating groove is formed between the protective cover and the mounting groove, a gear is connected to the rotating shaft of the motor, a transmission block is formed on the transmission part, a rack meshing with the gear is arranged on the transmission block, an arc transition surface is formed on one side of the transmission part, a rolling support assembly is arranged on the mounting groove corresponding to the arc transition surface, and a limiting groove for the movement of the transmission part and the rolling support assembly is arranged in the protective cover.

3. The rolling support adapter ring for a manual focus lens to achieve autofocus according to claim 2, wherein: The transmission block is located on the middle side of the transmission part and above the gear, the lower end of the transmission part is provided with a guide groove, and the rolling support assembly is arranged on the mounting groove corresponding to the guide groove.

4. The rolling support adapter ring for implementing auto focus of a manual focus lens according to claim 2, wherein: The transmission block is located on the bottom end side of the transmission part and below the gear, a guide column is further arranged on the transmission part, one end of the guide column is fixed in the mounting groove, and the other end is arranged in the groove of the protective cover.

5. The rolling support adapter ring for a manual focus lens to achieve autofocus according to claim 4, wherein: A protective washer is sleeved on the guide column.

6. A rolling support adapter ring for enabling auto focus of a manual focus lens according to any one of claims 3-5, characterized in that: A guide part is further arranged on the lens connector, the guide part is located below the annular connecting part and above the motor, a guide groove is arranged on the guide part, and a rolling support assembly is arranged on the mounting groove corresponding to the guide groove.

7. A rolling support adapter ring for enabling auto focus of a manual focus lens according to claim 6, wherein: The rolling support assembly comprises a support seat, the support seat is fixed on the mounting groove, a rolling block is rotatably connected to the support seat, and the rolling block is guided and rolled with the corresponding guide groove or arc transition surface.

8. The rolling support adapter ring for implementing auto focus of a manual focus lens according to claim 1, wherein: The controller comprises a control circuit board and a plurality of contact pins, the contact pins are arranged on an arc-shaped fixed block, the arc-shaped fixed block is fixedly connected with the camera connector, the control circuit board is located between the camera connector and the lens connector, and one end of the control circuit board extends to the side of the mounting groove and is connected with the USB interface and the power module, one end of the contact pin is connected with the control circuit board, and the other end is connected with the contact of the lens control unit of the camera.

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