WO2017152510A1 - 手动镜头转接环和手动镜头实现自动对焦的方法 - Google Patents

手动镜头转接环和手动镜头实现自动对焦的方法 Download PDF

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Publication number
WO2017152510A1
WO2017152510A1 PCT/CN2016/083665 CN2016083665W WO2017152510A1 WO 2017152510 A1 WO2017152510 A1 WO 2017152510A1 CN 2016083665 W CN2016083665 W CN 2016083665W WO 2017152510 A1 WO2017152510 A1 WO 2017152510A1
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Prior art keywords
lens
camera
connector
manual
adapter ring
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English (en)
French (fr)
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梁建平
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • G03B13/36—Autofocus systems
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • G03B17/14—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets interchangeably

Definitions

  • the present invention relates to the technical field of lens and camera transfer, and in particular to a manual lens adapter ring and a manual lens for implementing auto focus.
  • the manual lens adapter ring connects different brands of cameras and manual lenses to meet different photography needs.
  • the focus distance between the lens group and the photosensitive plane is generally adjusted by rotating the focus ring outside the manual lens to achieve focusing on different subjects.
  • the photographer needs to observe the imaging through the viewfinder window, and after confirming that the subject is clearly imaged, press the shutter to complete the shooting.
  • this focusing method relies to a large extent on the human eye to distinguish the image on the focusing screen and the proficiency of the photographer and the visual condition of the photographer. The shooting requirements are high and the use is inconvenient.
  • the camera uses moving film to change the distance between the lens and the imaging surface to achieve autofocus, but this technology will inevitably increase the size of the camera, and the focus range is also Relatively small, it can't adapt to different cameras.
  • the object of the present invention is to provide a manual lens adapter ring and a manual lens for realizing the focus, which can adapt different cameras and lenses to achieve automatic focusing of the manual lens.
  • a manual lens adapter ring includes a camera connector coupled to the camera, a lens connector coupled to the manual lens, a driving device for driving the lens connector to move along the optical axis of the lens, and a control for electrically connecting the driving device
  • the controller is also electrically connected to the focus control unit of the camera, and the lens connector and the camera connector are both connected to the driving device.
  • the controller receives the focus information sent by the focus control unit of the camera, the controller processes the received information and issues a focus command, thereby controlling the action of the driving device, and the driving device drives the lens connector to move along the optical axis of the lens to complete the lens. Telescopic, changing the horizontal distance between the lens and the camera, Thereby achieving autofocus of the manual lens.
  • the manual lens adapter ring of the invention can process and respond to the data and commands transmitted by the camera, realize autofocus, is convenient to use, and enables different models or brands of lenses to be used on different cameras, and the manual lens transfer
  • the ring acts as an external part of the camera and does not increase the size of the camera itself.
  • the lens connector is provided with a telescopic portion
  • the driving device comprises a motor fixed to the camera connector, and a transmission mechanism connected at one end to the rotating shaft of the motor, and the other end of the transmission mechanism is coupled with the telescopic portion.
  • the driving device controls the motor to rotate, so that the motor drives the transmission mechanism to move, and the lens connecting member moves along the optical axis direction of the lens through the cooperation of the transmission mechanism and the telescopic portion, thereby changing the horizontal distance between the lens and the camera, thereby realizing the automatic operation of the manual lens. Focus.
  • the controller is disposed in the camera connector, the controller includes a control circuit board and a stylus connected to the control circuit board at one end, and the other end of the stylus is connected to the contact of the focus control unit, and the control circuit board and the The motor is electrically connected.
  • the controller is arranged in the camera connector to make the adapter ring of the manual lens more beautiful; the stylus is connected with the contact of the focus control unit in the camera to exchange data and command between the camera and the control circuit board, and the control circuit board The drive motor action is controlled based on the received information.
  • the motor is fixed to the lower end of the camera connector, and the lower end of the lens connector is provided with a telescopic portion.
  • the arrangement of the camera, the manual lens adapter ring and the manual lens is more reasonable and the appearance is more beautiful.
  • the motor is a servo motor.
  • the servo motor controls the speed and position accuracy more precisely, making the movement of the manual lens more precise.
  • the camera connector is provided with a guiding column
  • the guiding column is arranged in parallel with the optical axis direction of the lens
  • the lens connecting member is provided with a guiding hole that cooperates with the guiding column.
  • the guiding column acts as a guide to prevent the manual lens from shaking during the movement, which makes the manual lens movement more precise.
  • the camera adapter is provided with a Hall sensor electrically connected to the controller, and the lens connector is provided with a magnet disposed opposite to the Hall sensor. Through the 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 to achieve precise control of the moving distance of the lens connector.
  • the transmission mechanism is a rack and pinion transmission mechanism
  • the rack and pinion transmission mechanism includes a gear, a rack that meshes with the gear, the rack is fixed to the telescopic portion, and the gear is connected with the rotating shaft of the motor.
  • Motor driven tooth The wheel rotates, the gear meshes with the rack fixed on the telescopic portion, and drives the rack to move along the optical axis direction of the lens to realize autofocus of the manual lens.
  • a power module is further disposed in the camera connector, and the power module is electrically connected to the controller. Make the motor have enough drive power.
  • the invention also provides a method for realizing auto focus by a manual lens, comprising the above manual lens adapter ring, the method comprising the following steps:
  • the manual lens is mounted on the camera through a manual lens adapter ring;
  • the camera's focus control unit sends the focus information to the controller
  • the controller processes the received information and issues a focus command to control the driving device to operate;
  • the driving device drives the lens connector to move along the optical axis of the lens to achieve autofocus of the manual lens.
  • the manual lens adapter ring of the invention can process and respond to the data and commands transmitted by the camera, realize autofocus, is convenient to use, and enables different models or brands of lenses to be used on different cameras, and the manual lens transfer
  • the ring acts as an external part of the camera and does not increase the size of the camera itself.
  • the present invention has the following beneficial effects:
  • the controller receives the focus information sent by the focus control unit of the camera, the controller processes the received information and issues a focus command, thereby controlling the action of the driving device, and the driving device drives the lens connector to move along the optical axis of the lens.
  • the manual lens adapter ring of the invention can process and respond to the data and commands transmitted by the camera, realize autofocus, is convenient to use, and enables different models or brands of lenses to be used on different cameras, and the manual lens transfer
  • the ring acts as an external part of the camera and does not increase the size of the camera itself.
  • FIG. 1 is a schematic structural view of a manual lens adapter ring according to an embodiment of the present invention.
  • a manual lens adapter ring includes a camera connector 20 coupled to the camera 10 , a lens connector 30 coupled to the manual lens 60 , and a driving lens connector 30 that moves along the optical axis of the lens.
  • the driving device 40 is connected to the controller 50 electrically connected to the driving device 40.
  • the controller 50 is also electrically connected to the focusing control unit of the camera 10, and the lens connector 30 and the camera connector 20 are both connected to the driving device 40.
  • the controller 50 receives the focus information sent by the focus control unit of the camera 10, the controller 50 processes the received information and issues a focus command, thereby controlling the operation of the driving device 40, and the driving device 40 drives the light of the lens connector 30 along the lens.
  • the axial direction moves to complete the expansion and contraction of the lens, and the horizontal distance between the lens and the camera 10 is changed, thereby realizing the autofocus of the manual lens 60.
  • the manual lens adapter ring of the present invention can process and respond to the data and commands transmitted by the camera 10, realize autofocus, is convenient to use, and enables different models or brands of lenses to be used on different cameras 10, and the manual lens
  • the adapter ring acts as an external component of the camera 10 and does not increase the size of the camera 10 itself.
  • the camera connector 20 is a camera connection ring fixedly connected to the bayonet of the camera 10
  • the lens connector 30 is a lens connection ring fixedly connected to the outer ring of the manual lens 60, the lens connection ring and the manual lens 60
  • the diameters are matched so that the manual lens 60 is fixedly connected to the lens connecting ring, which facilitates the fixing of the camera 10 and the manual lens 60.
  • the camera connector 20 and the lens connector 30 can also be provided in other forms as needed.
  • the lens connector 30 is provided with a telescopic portion 310.
  • the driving device 40 includes a motor 410 fixed to the camera connector 20, and a transmission mechanism 420 having one end connected to the rotating shaft of the motor 410. The other end of the transmission mechanism 420 is The expansion and contraction portion 310 is coupled to each other.
  • the driving device 40 rotates the motor 410 to cause the motor 410 to drive the transmission mechanism 420.
  • the coupling of the transmission mechanism 420 and the expansion and contraction portion 310 causes the lens connector 30 to move along the optical axis of the lens to change the level of the lens and the camera 10. Distance, thereby achieving autofocus of the manual lens 60.
  • the motor 410 is a servo motor 410.
  • the servo motor 410 controls the speed and position accuracy more accurately, so that the movement of the manual lens 60 is more accurate;
  • the transmission mechanism 420 is a rack and pinion transmission.
  • the mechanism 420 includes a gear and a rack that meshes with the gear.
  • the rack is fixed to the telescopic portion 310.
  • the gear is coupled to the rotating shaft of the motor 410.
  • the motor 410 drives the gear to rotate, and the gear is fixed to the telescopic portion 310.
  • the rack meshes and drives the rack to move along the optical axis of the lens to achieve autofocus of the manual lens 60.
  • the motor 410 can be set to other forms according to actual needs, and the transmission mechanism 420 can also be provided in the form of a worm gear transmission mechanism 420.
  • the worm gear transmission mechanism 420 includes a worm wheel, a worm gear matched with the worm wheel, and the worm gear and the motor 410 are rotatably connected, and the worm wheel and the worm wheel are
  • the telescopic portion 310 is connected to the drive, the motor 410 drives the worm to rotate, and the worm cooperates with the turbine to move the telescopic portion 310 along the optical axis of the lens to realize autofocus of the manual lens 60.
  • the transmission mechanism 420 can also be set as a telescopic rod according to actual needs. Other telescopic transmission methods.
  • the motor 410 is fixed to the lower end of the camera connector 20, and the telescopic portion 310 is disposed at the lower end of the lens connector 30.
  • the arrangement of the camera 10, the manual lens adapter ring and the manual lens 60 is more reasonable and the appearance is more beautiful.
  • the motor 410 and the telescopic portion 310 can also be disposed at other locations as needed.
  • the controller 50 is disposed in the camera connector 20.
  • the controller 50 includes a control circuit board 510 and a contact pin 520 connected to the control circuit board 510 at one end. The other end of the stylus 520 is in contact with the focus control unit.
  • the connection circuit board 510 is electrically connected to the motor 410.
  • the controller 50 is disposed in the camera connector 20 to make the manual lens adapter ring more beautiful; the contact pin 520 is connected to the contact of the focus control unit in the camera 10 to perform data and instructions between the camera 10 and the control circuit board 510.
  • the control circuit board 510 controls the operation of the motor 410 based on the received information.
  • the controller 50 can also be set to other forms according to actual needs.
  • the camera adapter 20 is provided with a Hall sensor 70 electrically connected to the controller 50.
  • the lens connector 30 is provided with a magnet 80 that cooperates with the Hall sensor 70. Through the cooperation of the Hall sensor 70 and the magnet 80, the change of the magnetic field strength is detected, and the collected information is sent to the controller 50 to achieve precise control of the moving distance of the lens connector 30.
  • the Hall sensor 70 is disposed on the control circuit board 510.
  • the Hall sensor 70 can also be disposed at other positions of the camera connector 20 according to actual needs.
  • the Hall sensor can also be disposed on the lens connector according to actual needs.
  • the magnet 80 is disposed on the camera connector 20.
  • a power module (not shown) is further disposed in the camera connector 20.
  • the power module is electrically connected to the controller 50 to provide sufficient driving power for the motor 410.
  • the camera connector 20 is provided with a guide post 210, which is arranged in parallel with the optical axis direction of the lens, and the lens connector 30 is provided with a guide hole 320 that cooperates with the guide post 210.
  • the guide post 210 serves as a guide to prevent the manual lens 60 from shaking during the movement, so that the manual lens 60 moves more accurately.
  • the guiding post 210 is disposed on the camera connector 20, and the guiding hole 320 is disposed on the lens connecting member 30.
  • the guiding post 210 can also be disposed on the lens connecting member 30 according to actual needs, and the guiding hole 320 is disposed at On the camera connector 20.
  • the invention also provides a method for realizing auto focus by a manual lens, comprising the above manual lens adapter ring, the method comprising the following steps:
  • the manual lens 60 is mounted on the camera 10 through a manual lens adapter ring;
  • the focus control unit of the camera 10 sends the focus information to the controller 50;
  • the controller 50 processes the received information and issues a focus command to control the driving device 40 to operate;
  • the driving device 40 drives the lens connector 30 to move in the optical axis direction of the lens to realize autofocusing of the manual lens 60.
  • the stylus 520 is connected to the contact of the focus control unit in the camera 10, thereby obtaining the focus information on the camera 10 and transmitting it to the control circuit board 510 for processing, and then controlling.
  • the circuit board 510 drives the servo motor 410 to rotate the transmission mechanism 420 connected to the servo motor 410, and drives the telescopic portion 310 of the lens connector 30 to move back and forth, so that the distance between the manual lens 60 and the imaging surface in the camera 10 changes. To achieve auto focus.
  • the manual lens adapter ring of the present invention is capable of processing and responding to data and commands transmitted by the camera 10 to achieve autofocus, and also enables different models or brands of lenses to be used on different cameras 10, and the manual lens adapter ring As an external component of the camera 10, the volume of the camera 10 itself is not increased, and the adapter ring has a simple structure, a light weight, and is convenient to use.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Studio Devices (AREA)
  • Lens Barrels (AREA)
  • Structure And Mechanism Of Cameras (AREA)

Abstract

一种手动镜头转接环和手动镜头实现自动对焦的方法。手动镜头转接环包括与相机（10）配合连接的相机连接件（20）、与手动镜头（60）配合连接的镜头连接件（30）、驱动装置（40）、与驱动装置（40）电性连接的控制器（50），控制器（50）还与相机（10）的对焦控制单元电性连接。控制器（50）接收相机（10）的对焦控制单元发送的对焦信息，控制驱动装置（40）驱动镜头连接件（30）沿镜头的光轴方向移动，实现自动对焦。手动镜头转接环使不同型号或品牌的镜头可以在不同的相机（10）上使用，且不会增加相机（10）体积。

Description

手动镜头转接环和手动镜头实现自动对焦的方法 技术领域
本发明涉及镜头与相机转接的技术领域，特别涉及一种手动镜头转接环和手动镜头实现自动对焦的方法。
背景技术
手动镜头转接环能把不同品牌的照相机和手动镜头连接在一起，以满足不同的摄影需求。手动镜头通过转接环安装在相机上后，一般通过旋转手动镜头外部的对焦环，调节镜片组和感光平面之间的物力距离，实现对不同主体的对焦。在对焦的过程中，拍摄者需要通过取景窗观察成像情况，在确认主体成像清晰后按下快门，完成拍摄。但这种对焦方式很大程度上依赖人眼对对焦屏上影像的判别以及拍摄者的熟练程度和拍摄者的视力状况，对拍摄的要求很高，使用不方便。虽然在90年代发明了能实现手动镜头自动对焦的相机，但该相机是利用移动胶片来实现改变镜头和成像面的距离来实现自动对焦，但这种技术势必会增加相机的体积，对焦范围也相对较小，不能适应不同的相机。
发明内容
本发明的目的在于提供一种手动镜头转接环和手动镜头实现自动对焦的方法，能够适配不同相机与镜头，实现手动镜头的自动对焦。
为实现本发明的目的，采取的技术方案是：
一种手动镜头转接环，包括与相机配合连接的相机连接件、与手动镜头配合连接的镜头连接件、驱动镜头连接件沿镜头光轴方向移动的驱动装置、与驱动装置电性连接的控制器，控制器还与相机的对焦控制单元电性连接，镜头连接件和相机连接件均与驱动装置连接。
工作时，控制器接收相机的对焦控制单元发送的对焦信息，控制器对接收信息进行处理并发出对焦指令，进而控制驱动装置动作，驱动装置驱动镜头连接件沿镜头的光轴方向移动，完成镜头的伸缩，改变镜头与相机的水平距离， 从而实现手动镜头的自动对焦。本发明的手动镜头转接环能够对相机传送的数据和指令进行处理和响应，实现自动对焦，使用方便，还使不同型号或品牌的镜头可以在不同的相机上使用，且该手动镜头转接环作为相机的外置部件，不会增加相机本身的体积。
下面对技术方案进一步说明：
进一步的是，镜头连接件设有伸缩部，驱动装置包括固定于相机连接件上的电机、一端与电机的转轴连接的传动机构，传动机构的另一端与伸缩部配合连接。驱动装置通过控制电机转动，使电机带动传动机构动作，通过传动机构与伸缩部的配合，使镜头连接件沿着镜头的光轴方向移动，改变镜头与相机的水平距离，从而实现手动镜头的自动对焦。
进一步的是，控制器设于相机连接件内，控制器包括控制线路板和一端与控制线路板连接的触针，触针的另一端与对焦控制单元的触点连接，控制线路板与所述电机电性连接。控制器设于相机连接件内，使手动镜头的转接环外形更美观；触针与相机内对焦控制单元的触点连接，为相机与控制线路板之间进行数据与指令交换，控制线路板根据接收的信息控制驱动电机动作。
进一步的是，电机固定于相机连接件的下端，镜头连接件的下端设有伸缩部。使相机、手动镜头转接环和手动镜头的布置更合理，外形更美观。
进一步的是，电机为伺服电机。伺服电机使速度和位置精度控制得更精准，使手动镜头的移动更精确。
进一步的是，相机连接件设有导向柱，导向柱与镜头的光轴方向平行布置，镜头连接件设有与导向柱配合的导向孔。镜头连接件在移动过程中，导向柱起导向作用，防止手动镜头在移动过程中发生晃动，使手动镜头移动更精准。
进一步的是，相机转接件内设有与控制器电性连接的霍尔传感器，镜头连接件设有与霍尔传感器相对设置的磁铁。通过霍尔传感器和磁铁的配合，检测磁场强度的变化，并将采集的信息发送至控制器，实现镜头连接件移动距离的精确控制。
进一步的是，传动机构为齿轮齿条传动机构，齿轮齿条传动机构包括齿轮、与齿轮啮合的齿条，齿条固定于伸缩部，齿轮与电机的转轴连接。电机带动齿 轮转动，齿轮与固定在伸缩部上的齿条啮合，并带动齿条沿着镜头的光轴方向移动，实现手动镜头的自动对焦。
进一步的是，相机连接件内还设有电源模块，电源模块与控制器电性连接。使电机有足够的驱动电力。
本发明还提供一种手动镜头实现自动对焦的方法，包括上述的手动镜头转接环，该方法包括以下步骤：
手动镜头通过手动镜头转接环安装于相机上；
相机的对焦控制单元将对焦信息发送至控制器；
控制器对接收信息进行处理并发出对焦指令，控制驱动装置动作；
驱动装置驱动镜头连接件沿镜头光轴方向移动，实现手动镜头的自动对焦。
本发明的手动镜头转接环能够对相机传送的数据和指令进行处理和响应，实现自动对焦，使用方便，还使不同型号或品牌的镜头可以在不同的相机上使用，且该手动镜头转接环作为相机的外置部件，不会增加相机本身的体积。
与现有技术相比，本发明具有以下有益效果：
本发明工作时，控制器接收相机的对焦控制单元发送的对焦信息，控制器对接收信息进行处理并发出对焦指令，进而控制驱动装置动作，驱动装置驱动镜头连接件沿镜头的光轴方向移动，完成镜头的伸缩，改变镜头与相机的水平距离，从而实现手动镜头的自动对焦。本发明的手动镜头转接环能够对相机传送的数据和指令进行处理和响应，实现自动对焦，使用方便，还使不同型号或品牌的镜头可以在不同的相机上使用，且该手动镜头转接环作为相机的外置部件，不会增加相机本身的体积。
附图说明
图1是本发明实施例手动镜头转接环的结构示意图。
附图标记说明：
10.相机，20.相机连接件，210.导向柱，30.镜头连接件，310.伸缩部，320.导向孔，40.驱动装置，410.电机，420.传动机构，50.控制器，510.控制线路板，520.触针，60.手动镜头,70.霍尔传感器，80.磁铁。
具体实施方式
下面结合附图对本发明的实施例进行详细说明：
如图1所示，一种手动镜头转接环，包括与相机10配合连接的相机连接件20、与手动镜头60配合连接的镜头连接件30、驱动镜头连接件30沿镜头光轴方向移动的驱动装置40、与驱动装置40电性连接的控制器50，控制器50还与相机10的对焦控制单元电性连接，镜头连接件30和相机连接件20均与驱动装置40连接。
工作时，控制器50接收相机10的对焦控制单元发送的对焦信息，控制器50对接收信息进行处理并发出对焦指令，进而控制驱动装置40动作，驱动装置40驱动镜头连接件30沿镜头的光轴方向移动，完成镜头的伸缩，改变镜头与相机10的水平距离，从而实现手动镜头60的自动对焦。本发明的手动镜头转接环能够对相机10传送的数据和指令进行处理和响应，实现自动对焦，使用方便，还使不同型号或品牌的镜头可以在不同的相机10上使用，且该手动镜头转接环作为相机10的外置部件，不会增加相机10本身的体积。
在本实施例中，相机连接件20是与相机10的卡口固定连接的相机连接环，镜头连接件30是与手动镜头60外环固定连接的镜头连接环，镜头连接环与手动镜头60外径相匹配，使得手动镜头60与镜头连接环固定连接，利于相机10与手动镜头60的固定。相机连接件20和镜头连接件30还可以根据实际需要设置为其他形式。
如图1所示，镜头连接件30设有伸缩部310，驱动装置40包括固定于相机连接件20上的电机410、一端与电机410的转轴连接的传动机构420，传动机构420的另一端与伸缩部310配合连接。驱动装置40通过控制电机410转动，使电机410带动传动机构420动作，通过传动机构420与伸缩部310的配合，使镜头连接件30沿着镜头的光轴方向移动，改变镜头与相机10的水平距离，从而实现手动镜头60的自动对焦。
在本实施例中，电机410为伺服电机410，伺服电机410使速度和位置精度控制得更精准，使手动镜头60的移动更精确；传动机构420为齿轮齿条传动 机构420，齿轮齿条传动机构420包括齿轮、与齿轮啮合的齿条，齿条固定于伸缩部310，齿轮与电机410的转轴连接，电机410带动齿轮转动，齿轮与固定在伸缩部310上的齿条啮合，并带动齿条沿着镜头的光轴方向移动，实现手动镜头60的自动对焦。电机410可以根据实际需要设置为其他形式，传动机构420还可设置为蜗轮蜗杆传动机构420的形式，蜗轮蜗杆传动机构420包括蜗轮、与蜗轮适配的蜗杆，蜗杆与电机410转动连接，蜗轮与伸缩部310传动连接，电机410带动蜗杆转动，蜗杆与涡轮配合，使伸缩部310沿着镜头的光轴方向移动，实现手动镜头60的自动对焦；传动机构420还可以根据实际需要设置为伸缩杆等其他伸缩传动方式。
如图1所示，电机410固定于相机连接件20的下端，伸缩部310设于镜头连接件30的下端。使相机10、手动镜头转接环和手动镜头60的布置更合理，外形更美观。电机410和伸缩部310还可以根据实际需要设置在其他位置。
如图1所示，控制器50设于相机连接件20内，控制器50包括控制线路板510和一端与控制线路板510连接的触针520，触针520的另一端与对焦控制单元的触点连接，控制线路板510与电机410电性连接。控制器50设于相机连接件20内，使手动镜头转接环外形更美观；触针520与相机10内对焦控制单元的触点连接，为相机10与控制线路板510之间进行数据与指令交换，控制线路板510根据接收的信息控制电机410动作。控制器50还可以根据实际需要设置为其他形式。
如图1所示，相机转接件20内设有与控制器50电性连接的霍尔传感器70，镜头连接件30设有与霍尔传感器70配合的磁铁80。通过霍尔传感器70和磁铁80的配合，检测磁场强度的变化，并将采集的信息发送至控制器50，实现镜头连接件30移动距离的精确控制。
在本实施例中，霍尔传感器70设于控制线路板510上，霍尔传感器70还可以根据实际需要设置在相机连接件20的其他位置，霍尔传感器也可以根据实际需要设置在镜头连接件30上，磁铁80则设置在相机连接件20上。
相机连接件20内还设有电源模块(附图未标识)，电源模块与控制器50电性连接，使电机410有足够的驱动电力。
如图1所示，相机连接件20设有导向柱210，导向柱210与镜头的光轴方向平行布置，镜头连接件30设有与导向柱210配合的导向孔320。镜头连接件30在移动过程中，导向柱210起导向作用，防止手动镜头60在移动过程中发生晃动，使手动镜头60移动更精准。
在本实施例中，导向柱210设置在相机连接件20上，导向孔320设置在镜头连接件30上，导向柱210还可以根据实际需要设置在镜头连接件30上，导向孔320则设置在相机连接件20上。
本发明还提供一种手动镜头实现自动对焦的方法，包括上述的手动镜头转接环，该方法包括以下步骤：
手动镜头60通过手动镜头转接环安装于相机10上；
相机10的对焦控制单元将对焦信息发送至控制器50；
控制器50对接收信息进行处理并发出对焦指令，控制驱动装置40动作；
驱动装置40驱动镜头连接件30沿镜头光轴方向移动，实现手动镜头60的自动对焦。
在本实施例中，把手动镜头转接环安装完后，触针520与相机10内对焦控制单元的触点连接，从而获得相机10上的对焦信息并且传递给控制线路板510处理，然后控制线路板510驱动伺服电机410，使得与伺服电机410连接的传动机构420进行转动，并且带动镜头连接件30的伸缩部310前后移动，使得手动镜头60与相机10内成像面之间的距离发生改变来实现自动对焦。本发明的手动镜头转接环能够对相机10传送的数据和指令进行处理和响应，实现自动对焦，还使不同型号或品牌的镜头可以在不同的相机10上使用，且该手动镜头转接环作为相机10的外置部件，不会增加相机10本身的体积，该转接环结构简单，体积轻巧，使用方便。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的 普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种手动镜头转接环，其特征在于，包括与相机配合连接的相机连接件、与手动镜头配合连接的镜头连接件、驱动所述镜头连接件沿镜头光轴方向移动的驱动装置、与所述驱动装置电性连接的控制器，所述控制器还与相机的对焦控制单元电性连接，所述镜头连接件和所述相机连接件均与所述驱动装置连接。
  2. 根据权利要求1所述的手动镜头转接环，其特征在于，所述镜头连接件设有伸缩部，所述驱动装置包括固定于所述相机连接件上的电机、一端与所述电机的转轴连接的传动机构，所述传动机构的另一端与所述伸缩部配合连接。
  3. 根据权利要求2所述的手动镜头转接环，其特征在于，所述控制器设于所述相机连接件内，所述控制器包括控制线路板和一端与所述控制线路板连接的触针，所述触针的另一端与所述对焦控制单元的触点连接，所述控制线路板与所述电机电性连接。
  4. 根据权利要求3所述的手动镜头转接环，其特征在于，所述电机固定于所述相机连接件的下端，所述镜头连接件的下端设有所述伸缩部。
  5. 根据权利要求4所述的手动镜头转接环，其特征在于，所述电机为伺服电机。
  6. 根据权利要求1所述的手动镜头转接环，其特征在于，所述相机连接件设有导向柱，所述导向柱与镜头的光轴方向平行布置，所述镜头连接件设有与所述导向柱配合的导向孔。
  7. 根据权利要求1所述的手动镜头转接环，其特征在于，所述相机转接件内设有与所述控制器电性连接的霍尔传感器，所述镜头连接件设有与所述霍尔传感器相对设置的磁铁。
  8. 根据权利要求2至7任一项所述的手动镜头转接环，其特征在于，所述传动机构为齿轮齿条传动机构，所述齿轮齿条传动机构包括齿轮、与所述齿轮啮合的齿条，所述齿条固定于所述伸缩部，所述齿轮与所述电机的转轴连接。
  9. 根据权利要求1至7任一项所述的手动镜头转接环，其特征在于，所述相机连接件内还设有电源模块，所述电源模块与所述控制器电性连接。
  10. 一种手动镜头实现自动对焦的方法，其特征在于，包括如权利要求1 至9任一项所述的手动镜头转接环，该方法包括以下步骤：
    手动镜头通过手动镜头转接环安装于相机上；
    相机的对焦控制单元将对焦信息发送至控制器；
    控制器对接收信息进行处理并发出对焦指令，控制驱动装置动作；
    驱动装置驱动镜头连接件沿镜头光轴方向移动，实现手动镜头的自动对焦。
PCT/CN2016/083665 2016-03-09 2016-05-27 手动镜头转接环和手动镜头实现自动对焦的方法 Ceased WO2017152510A1 (zh)

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