Adapter ring capable of realizing automatic and manual focusing of manual lens

Abstract

The utility model provides an adapter ring capable of realizing automatic and manual focusing of a manual lens, which comprises a mounting seat, the mounting seat comprises a mounting ring and a mounting groove, a camera connecting piece is arranged on one side of the mounting ring, a lens connecting piece and a lens fixing ring are sequentially arranged on the other side of the mounting ring, and a driving device is arranged in the mounting groove. A controller is further arranged on the mounting base, a protective cover is further connected to a notch of the mounting groove, the lens connecting piece comprises an annular connecting part, a transmission part and a guide part which are integrally formed, the annular connecting part is connected with the mounting ring in a matched mode, and the transmission part is connected with the driving device in a matched mode, so that the transmission part and the guide part telescopically move in the direction facing the protective cover. The lens connecting piece is provided with a manual focusing assembly for controlling the movement of the lens, and further comprises a USB interface, a button control key and a power supply module. According to the adapter ring, lenses of different models or brands can be used on different cameras, automatic focusing and manual focusing can be realized, and the adapter ring is flexible and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of camera auxiliary devices, in particular to an adapter ring that can realize automatic and manual focusing of a manual lens. Background Art

[0002] In today's society, more and more people who love photography and like digital cameras. Many enthusiasts hope to experience the photographing experience brought by lenses of other different brands on their original cameras. This requires a device that can convert cameras and lenses of different brands, that is, an adapter ring. The adapter ring can connect lenses and cameras of different brands for shooting, greatly increasing the lens resources and enabling better play of the role of lenses of other series of bayonets.

[0003] The manual lens adapter ring can connect cameras and manual lenses of different brands to meet different photographic needs. After the manual lens is installed on the camera through the adapter ring, generally, by rotating the focusing ring outside the manual lens, the physical distance between the lens group and the photosensitive plane is adjusted to achieve focusing on different subjects. During the focusing process, the photographer needs to observe the imaging situation through the viewfinder and press the shutter after confirming that the subject is clearly imaged to complete the shooting. However, this focusing method largely depends on the human eye's discrimination of the image on the focusing screen, the proficiency of the photographer, and the eyesight of the photographer, with high requirements for shooting and inconvenient use. Although cameras capable of automatic focusing of lenses were invented in the 1980s, these cameras can only achieve automatic focusing on specific automatic focusing lenses and cannot achieve the automatic focusing function of manual lenses. Content of the Utility Model

[0004] The purpose of the utility model is to provide an adapter ring that can realize automatic and manual focusing of a manual lens, so as to solve the problem in the prior art that cameras equipped with an automatic focusing function can only achieve automatic focusing under specific supporting automatic lenses, and the original manual focusing lenses cannot be adapted to automatic focusing cameras.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] An adapter ring that can achieve automatic and manual focusing of a manual lens, comprising a mounting base. The mounting base includes an integrally formed mounting ring and a mounting groove. One side of the mounting ring is provided with a camera connector, and the other side is sequentially provided with a lens connector and a lens fixing ring. A driving device is arranged in the mounting groove, and a controller is also arranged on the mounting base. The controller is electrically connected to the driving device and the lens control unit of the camera. The lens connector is connected to the driving device. A protective cover is also connected to the notch position of the mounting groove. The lens connector includes an integrally formed annular connecting portion, a transmission portion, and a guiding portion. The annular connecting portion is cooperatively connected to the mounting ring, and the transmission portion is cooperatively connected to the driving device, so that the transmission portion and the guiding portion move telescopically in the direction facing the protective cover. A manual focusing component for controlling the movement of the lens is also arranged on the lens connector. It also includes a USB interface, a button control key, and a power module, all of which are electrically connected to the controller.

[0007] Preferably, the above-mentioned manual focusing component includes a first gear and a second gear. A first groove and a second groove for mounting the first gear and the second gear are arranged on the side of the annular connecting portion facing the lens installation. The first gear and the second gear are meshed and connected. A lens focusing driving rod is connected to the first gear, and one end of the lens focusing driving rod extends out of the lens fixing ring.

[0008] Preferably, a notch is arranged on the mounting ring corresponding to the second groove, and the second gear extends out of the second groove and the notch in sequence.

[0009] Preferably, the above-mentioned driving device includes a motor. A motor receiving groove is formed between the protective cover and the mounting groove. A transmission mechanism is connected to the rotating shaft of the motor. One end of the transmission portion extends from the annular connecting portion and is bent to form a transmission area. The transmission area cooperatively rotates with the transmission mechanism. A first guiding column is penetrated through the bent position of the transmission portion, and guiding column installation grooves corresponding to the first guiding column are arranged on the protective cover. A second guiding column is penetrated through the guiding portion, and one ends of the first guiding column and the second guiding column are respectively fixed on the mounting groove.

[0010] Preferably, the above-mentioned transmission mechanism includes a gear and a rack. The gear is connected to the rotating shaft of the motor, and the rack is arranged on the transmission area.

[0011] Preferably, protective washers are sleeved on both the first guiding column and the second guiding column.

[0012] Preferably, the controller includes a control circuit board and a plurality of contact pins. The contact pins are inserted through an arc-shaped fixing block. One end of the contact pin is connected to the control circuit board, and the other end is connected to the contact of the lens control unit of the camera. The arc-shaped fixing block is fixedly connected to the camera connector. The control circuit board is located between the camera connector and the lens connector, and one end extends to the bottom of the installation groove and is connected to the USB interface, button control keys, and power module.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] (1) Through the design of the mounting base and the protective cover, the mounting ring facilitates the stable installation of the lens connector and the camera connector. The driving device, USB interface and other accessories can be effectively installed in the installation groove, so that the connection structure of the entire adapter ring is more compact. It can not only improve the stability of installation and use, improve the shooting effect, but also improve a certain aesthetic property.

[0015] (2) Through the cooperation of the controller, the camera connector and the lens connector, the controller can receive the control information sent by the lens control unit of the camera. The controller processes the received information and issues a focusing instruction, and then controls the driving device to act. The driving device drives the lens connector to move along the optical axis direction of the lens, completes the telescopic movement of the lens, changes the horizontal distance between the lens and the camera, so as to realize the automatic focusing of the manual lens. It is convenient to use, and different models or brands of lenses can be used on different cameras. Moreover, as an external component of the camera, the manual lens adapter ring will not increase the volume of the camera itself.

[0016] (3) Through the design of the manual focusing component, it is convenient to manually adjust the focusing of the lens according to the requirements of the use environment, and improve the operation flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the utility model;

[0018] Figure 2 is an exploded structural diagram of the utility model;

[0019] Figure 3 is a schematic structural diagram of the lens connector in the utility model.

[0020] In the figure: 1 - mounting base; 2 - camera connecting piece; 3 - lens connecting piece; 4 - lens fixing ring; 5 - protective cover; 6 - USB interface; 7 - button control key; 8 - first gear; 9 - second gear; 10 - lens focusing drive rod; 11 - motor; 12 - first guide post; 13 - second guide post; 14 - gear; 15 - rack; 16 - protective washer; 17 - control circuit board; 18 - contact pin; 19 - arc-shaped fixing block; 101 - mounting ring; 102 - mounting groove; 301 - annular connecting part; 302 - transmission part; 303 - guiding part; 401 - positioning bayonet; 501 - guide post mounting groove. Specific embodiments

[0021] The following further describes the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted here that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation on the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] As Figures 1 - 3 shown, an adapter ring that can achieve automatic and manual focusing of a manual lens includes a mounting base 1. The mounting base 1 includes an integrally formed mounting ring 101 and a mounting groove 102. A camera connecting piece 2 is provided on one side of the mounting ring 101, and a lens connecting piece 3 and a lens fixing ring 4 are sequentially provided on the other side. A driving device is provided in the mounting groove 102. A controller is also provided on the mounting base 1. The controller is electrically connected to the driving device and the lens control unit of the camera. The lens connecting piece 3 is connected to the driving device. A protective cover 5 is also connected to the notch position of the mounting groove 102. The lens connecting piece 3 includes an integrally formed annular connecting part 301, a transmission part 302, and a guiding part 303. The annular connecting part 301 is cooperatively connected with the mounting ring 101, and the transmission part 302 is cooperatively connected with the driving device, so that the transmission part 302 and the guiding part 303 perform telescopic movement in the direction facing the protective cover 5. A manual focusing component for controlling the movement of the lens is also provided on the lens connecting piece 3. It also includes a USB interface 6, a button control key 7, and a power supply module, and all are electrically connected to the controller.

[0023] During use, through the cooperation of the controller, the camera connecting piece 2, and the lens connecting piece 3, the controller can receive the focusing information sent by the lens control unit of the camera. The controller processes the received information and issues a focusing instruction, thereby controlling the driving device to act. The driving device drives the lens connecting piece 3 to move along the optical axis direction of the lens, completing the telescopic movement of the lens and changing the horizontal distance between the lens and the camera, so as to achieve automatic focusing of the manual lens, which is convenient to use; in addition, according to the requirements of the use environment, the focusing can also be adjusted by operating the manual focusing component to improve the operation flexibility.

[0024] The adapter ring of the utility model can make lenses of different models or brands be used on different cameras, and the manual lens adapter ring is an external component of the camera and does not increase the size of the camera itself; through the design of the mounting seat 1 and the protective cover 5, the mounting ring 101 is convenient for the stable installation of the lens connector 3 and the camera connector 4, and the drive device, USB interface 6 and other accessories can be effectively installed in the mounting groove 102, so that the connection structure of the entire adapter ring is tighter, which can not only improve the stability of installation and use, improve the shooting effect, but also improve a certain degree of aesthetics.

[0025] Furthermore, the manual focus assembly includes a first gear 8 and a second gear 9. A first groove and a second groove for mounting the first gear 8 and the second gear 9 are provided on the side of the annular connecting portion 301 facing the lens installation. The first gear 8 and the second gear 9 are meshingly connected. A lens focus driving rod 10 is connected to the first gear 8, and one end of the lens focus driving rod 10 extends out of the lens fixing ring 4. A notch is provided at a position corresponding to the second groove on the mounting ring 4. The second gear 9 extends out from the second groove and the notch in turn, and the extended portion is used to manually shift the second gear 9. The above design has a simple structure and is easy to install. Only the second gear 9 needs to be manually rotated to drive the first gear 8 and the lens focus driving rod 10 to mesh and rotate, thereby driving the lens to move along the optical axis direction of the lens, completing the telescoping of the lens, and changing the horizontal distance between the lens and the camera, thereby realizing manual focus of the manual lens and improving the flexibility of use.

[0026] Further, the driving device includes a motor 11, a motor receiving groove is formed between the protective cover 5 and the mounting groove 102, a transmission mechanism is connected to the rotating shaft of the motor 11, one end of the transmission part 302 extends from the annular connecting part 301 and bends to form a transmission area, the transmission area rotates in coordination with the transmission mechanism, a first guide column 12 is penetrated at the bent position of the transmission part 302, a guide column mounting groove 501 is provided on the protective cover 5 corresponding to the first guide column 12, a second guide column 13 is penetrated on the guide part 303, and one end of the first guide column 12 and the second guide column 13 are respectively fixed on the mounting groove 102. The above design, through the dual cooperation of the first guide column 12 and the second guide column 13, can make the movement of the lens connecting member 3 more stable and accurate, and improve the use effect.

[0027] Furthermore, the transmission mechanism includes a gear 14 and a rack 15, the gear 14 is connected to the rotating shaft of the motor 11, and the rack 15 is arranged on the transmission area. The above design has a simple structure, the motor 11 drives the gear 14 to rotate, the gear 14 is engaged with the rack 15 fixed on the transmission area, and drives the rack 15 to move along the optical axis direction of the lens, so as to realize the automatic focusing of the manual lens, and the operation is convenient; the transmission mechanism can also be a worm gear transmission mechanism, which improves the flexibility of the use selection.

[0028] Further, protective washers 16 are sleeved on both the first guide post 12 and the second guide post 13. With the above design, the wear of the guide posts can be reduced, thus ensuring the accuracy of the lens movement.

[0029] Further, the controller includes a control circuit board 17 and a number of contact pins 18. The contact pins 18 are passed through an arc-shaped fixing block 19. One end of the contact pin 18 is connected to the control circuit board 17, and the other end is connected to the contact of the lens control unit of the camera. The arc-shaped fixing block 19 is fixedly connected to the camera connector 2. The control circuit board 17 is located between the camera connector 2 and the lens connector 3, and one end extends to the bottom of the installation groove 102 to be connected to the USB interface 6, the button control key 7, and the power module. With the above design, the overall structure of the adapter ring can be made more compact and the appearance can be more beautiful; the contact pin 18 is connected to the contact of the lens control unit of the camera to exchange data and instructions between the camera and the control circuit board 17. The control circuit board 17 controls the driving motor 11 to act according to the received information to complete the autofocus work.

[0030] Specifically, the motor 11 can be a servo motor, and its speed and position accuracy are controlled more precisely, making the movement of the manual lens more accurate;

[0031] A Hall sensor electrically connected to the controller is provided inside the camera connector 2, and a magnet is provided on the lens connector 3 opposite to the Hall sensor. Through the cooperation of the Hall sensor and the magnet, the change in the magnetic field strength is detected, and the collected information is sent to the controller to achieve precise control of the moving distance of the lens connector;

[0032] The design of the USB interface 6 can perform software upgrade on the controller;

[0033] The button control key 7 can send a specific signal to the camera through the lens control unit and the contact pin 18, and a specific shortcut function can be realized through the processing of the internal program of the camera body, which can simplify the user operation.

[0034] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that all the equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An adapter ring capable of realizing automatic and manual focusing of a manual lens, characterized in that: The invention comprises a mounting seat, wherein the mounting seat comprises an integrally formed mounting ring and a mounting groove, a camera connector is arranged on one side of the mounting ring, and a lens connector and a lens fixing ring are arranged in sequence on the other side, a driving device is arranged in the mounting groove, and a controller is also arranged on the mounting seat, wherein the controller is electrically connected to the driving device and the lens control unit of the camera, the lens connector is connected to the driving device, and a protective cover is also connected to the notch position of the mounting groove, the lens connector comprises an integrally formed annular connecting part, a transmission part and a guide part, the annular connecting part is cooperatively connected to the mounting ring, the transmission part is cooperatively connected to the driving device, so that the transmission part and the guide part can be telescopically moved in the direction of the protective cover, a manual focus component for controlling the movement of the lens is also arranged on the lens connector, and further comprises a USB interface, a button control key and a power module, all of which are electrically connected to the controller.

2. The adapter ring capable of realizing automatic and manual focusing of a manual lens according to claim 1, characterized in that: The manual focus assembly includes a first gear and a second gear. The side of the annular connecting portion facing the lens installation is provided with a first groove and a second groove for installing the first gear and the second gear. The first gear and the second gear are meshingly connected. A lens focus drive rod is connected to the first gear, and one end of the lens focus drive rod extends out of the lens fixing ring.

3. The adapter ring capable of realizing automatic and manual focusing of a manual lens according to claim 2, characterized in that: A notch is provided on the mounting ring at a position corresponding to the second groove, and the second gear extends out from the second groove and the notch in sequence.

4. The adapter ring capable of realizing automatic and manual focusing of a manual lens according to claim 1, characterized in that: The driving device includes a motor, a motor accommodating groove is formed between the protective cover and the mounting groove, a transmission mechanism is connected to the rotating shaft of the motor, one end of the transmission part extends from the annular connecting part and is bent to form a transmission area, the transmission area rotates in coordination with the transmission mechanism, a first guide column is penetrated at the bent position of the transmission part, and a guide column mounting groove is provided on the protective cover corresponding to the first guide column, a second guide column is penetrated on the guide part, and one end of the first guide column and the second guide column are respectively fixed to the mounting groove.

5. The adapter ring capable of realizing automatic and manual focusing of a manual lens according to claim 4, characterized in that: The transmission mechanism comprises a gear and a rack, wherein the gear is connected to the rotating shaft of the motor, and the rack is arranged on the transmission area.

6. The adapter ring capable of realizing automatic and manual focusing of a manual lens according to claim 5, characterized in that: The first guide column and the second guide column are both sleeved with protective washers.

7. The adapter ring capable of realizing automatic and manual focusing of a manual lens according to claim 1, characterized in that: The controller includes a control circuit board and a plurality of contact pins, wherein the contact pins are inserted into an arc-shaped fixed block, one end of the contact pins is connected to the control circuit board, and the other end is connected to the contact of the lens control unit of the camera, the arc-shaped fixed block is connected and fixed to the camera connector, the control circuit board is located between the camera connector and the lens connector, and one end extends to the bottom of the mounting slot and is connected to the USB interface, the button control key and the power module.

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