WO2020125390A1 - 镜头装置、摄像装置及移动体 - Google Patents

镜头装置、摄像装置及移动体 Download PDF

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Publication number
WO2020125390A1
WO2020125390A1 PCT/CN2019/122374 CN2019122374W WO2020125390A1 WO 2020125390 A1 WO2020125390 A1 WO 2020125390A1 CN 2019122374 W CN2019122374 W CN 2019122374W WO 2020125390 A1 WO2020125390 A1 WO 2020125390A1
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WO
WIPO (PCT)
Prior art keywords
lens
nut
moving frame
cam pin
lens device
Prior art date
Application number
PCT/CN2019/122374
Other languages
English (en)
French (fr)
Inventor
城野方博
白龙吉
Original Assignee
深圳市大疆创新科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to CN201980033422.XA priority Critical patent/CN112136067A/zh
Publication of WO2020125390A1 publication Critical patent/WO2020125390A1/zh
Priority to US17/351,218 priority patent/US20210311281A1/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining 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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/006—Apparatus mounted on flying objects
    • 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
    • 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
    • G03B35/00—Stereoscopic photography
    • G03B35/08—Stereoscopic photography by simultaneous recording
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules

Definitions

  • the present invention requires the priority of the Japanese invention patent filed on December 20, 2018 with the application number JP2018-238444 and the invention titled "Lene device, imaging device, and moving body", and the entire contents of the invention patent are incorporated herein.
  • the invention relates to a lens device, an imaging device and a moving body.
  • Patent Document 1 describes a technique of screwing the first lens frame and the second lens frame with eccentric pins.
  • Patent Document 1 Japanese Patent Publication No. 2000-66076.
  • the lens device may include a lens.
  • the lens device may include a moving frame that moves together with the lens.
  • the lens device may include a cam pin, which is provided on the surface of the moving frame.
  • the lens device may include a cam ring having a cam groove that guides the cam pin.
  • the lens device may include a nut, which is disposed inside the cavity provided by the moving frame.
  • the lens device may include a screw that fixes the cam pin on the moving frame by fastening of the nut.
  • the moving frame may have a concave portion on the surface.
  • the cam pin may be provided in the recess.
  • the cam pin may have a first through hole.
  • the concave portion may have a second through hole penetrating the cavity on the bottom surface.
  • the screw may pass through the first through hole and the second through hole and be fastened by the nut.
  • the cam pin may be positioned by the side wall of the recess.
  • the diameter of the second through hole may be larger than the diameter of the screw hole of the nut.
  • the nut can be adhered to the inner wall of the cavity by an adhesive.
  • the adhesive may have elasticity.
  • the width of the cavity may be greater than the width of the nut.
  • the nut may be plate-shaped.
  • the nut and screw can be made of metal.
  • the moving frame may be made of resin.
  • An imaging device may include the above lens device and image sensor.
  • the mobile body according to an aspect of the present invention may be a mobile body that includes the above-described imaging device and moves.
  • FIG. 1 is a diagram illustrating an example of an external perspective view of an imaging device.
  • FIG. 2 is a schematic diagram showing functional blocks of the imaging device.
  • FIG. 3 shows an example of a cross-sectional view of the lens unit.
  • FIG. 4 is an enlarged view showing the symbol 500 shown in FIG. 3.
  • FIG. 5 shows an example of a cross-sectional view of the lens unit according to this embodiment.
  • FIG. 6 is an enlarged view showing the portion indicated by symbol 502 in FIG. 5.
  • Fig. 7 is a schematic diagram showing a fixed portion of a cam pin and a moving frame.
  • FIG. 8 is a schematic diagram showing a state where the cam pin and the nut are installed on the moving frame.
  • FIG. 9 is a schematic diagram showing a state where a screw is inserted into a through hole.
  • FIG. 10 is a schematic diagram showing a state where a screw passes through a through hole of a cam pin and a through hole of a moving frame and is fastened by a nut.
  • FIG. 11 is a diagram showing an example of the appearance of an unmanned aircraft and a remote control device.
  • the blocks may represent (1) the stage of the process of performing the operation or (2) the "part" of the device that has the function of performing the operation.
  • Certain stages and "parts" can be implemented by programmable circuits and/or processors.
  • the dedicated circuits may include digital and/or analog hardware circuits.
  • ICs integrated circuits
  • discrete circuits may be included.
  • the programmable circuit may include a reconfigurable hardware circuit.
  • Reconfigurable hardware circuits can include logical AND, logical OR, logical XOR, logical NAND, logical NOR, and other logic operations, flip-flops, registers, field programmable gate array (FPGA), programmable logic array (PLA) ) And other memory elements.
  • the computer-readable medium may include any tangible device that can store instructions executed by a suitable device.
  • a computer-readable medium with instructions stored therein is provided with a product that includes instructions that can be executed to create means for performing the operations specified by the flowchart or block diagram.
  • electronic storage media, magnetic storage media, optical storage media, electromagnetic storage media, semiconductor storage media, etc. may be included.
  • a computer-readable medium it may include a floppy disk (registered trademark), floppy disk, hard disk, random access memory (RAM), read only memory (ROM), erasable programmable read only memory (EPROM, or flash memory ), electrically erasable programmable read-only memory (EEPROM), static random access memory (SRAM), compact disk read-only memory (CD-ROM), digital versatile disk (DVD), Blu-ray (RTM) disk, memory stick, IC cards, etc.
  • floppy disk registered trademark
  • floppy disk hard disk
  • RAM random access memory
  • ROM read only memory
  • EPROM erasable programmable read only memory
  • flash memory electrically erasable programmable read-only memory
  • SRAM static random access memory
  • CD-ROM compact disk read-only memory
  • DVD digital versatile disk
  • RTM Blu-ray
  • the computer readable instructions may include any one of source code or object code described by any combination of one or more programming languages.
  • Source code or object code includes traditional procedural programming languages.
  • Traditional programming languages can be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, status setting data, or Smalltalk, JAVA (registered trademark), C++, etc.
  • the computer-readable instructions may be provided locally or via a wide area network (WAN) such as a local area network (LAN), the Internet, or the like to a processor or programmable circuit of a general-purpose computer, a dedicated computer, or other programmable data processing device.
  • WAN wide area network
  • LAN local area network
  • the Internet or the like to a processor or programmable circuit of a general-purpose computer, a dedicated computer, or other programmable data processing device.
  • a processor or programmable circuit can execute computer readable instructions to create means for performing the operations specified by the flowchart or block diagram.
  • Examples of the processor include a computer processor, a processing unit, a microprocessor, a digital signal processor, a controller, a microcontroller, and so on.
  • FIG. 1 is a diagram showing an example of an external perspective view of an imaging device 100 according to this embodiment.
  • FIG. 2 is a schematic diagram showing the functional blocks of the imaging device 100 according to this embodiment.
  • the imaging device 100 includes an imaging unit 102 and a lens unit 200.
  • the imaging unit 102 includes an image sensor 120, an imaging control unit 110, and a memory 130.
  • the image sensor 120 may be composed of CCD or CMOS.
  • the image sensor 120 outputs the image data of the optical image formed by the lens 210 to the imaging control section 110.
  • the imaging control unit 110 may be configured by a microprocessor such as a CPU or MPU, a microcontroller such as an MCU, or the like.
  • the memory 130 may be a computer-readable storage medium, and may include at least one of flash memory such as SRAM, DRAM, EPROM, EEPROM, and USB memory.
  • the memory 130 stores programs and the like necessary for the imaging control unit 110 to control the image sensor 120 and the like.
  • the memory 130 may be provided inside the housing of the camera 100.
  • the memory 130 may be configured to be detachable from the housing of the camera device 100.
  • the imaging unit 102 may further include an instruction unit 162 and a display unit 160.
  • the instruction unit 162 is a user interface that accepts an instruction to the imaging device 100 from the user.
  • the display unit 160 displays the image captured by the image sensor 120, various setting information of the imaging device 100, and the like.
  • the display unit 160 may be composed of a touch panel.
  • the lens unit 200 includes a plurality of lenses 210, a light amount control mechanism 350, a lens moving mechanism 212, and a lens control unit 220. Multiple lenses 210 can function as a single focus lens. The plurality of lenses 210 are movably arranged along the optical axis. The lens unit 200 may be an interchangeable lens provided to be detachable from the imaging unit 102. The lens moving mechanism 212 moves the plurality of lenses 210 along the optical axis. The lens control unit 220 drives the lens moving mechanism 212 in accordance with the lens control command from the imaging unit 102 to move one or more lenses 210 in the optical axis direction. For example, the lens control instruction is a focus control instruction.
  • the lens moving mechanism 212 may include a motor, a cam ring driven by the motor, and a moving frame that moves along with the lens in the optical axis direction as the cam ring rotates.
  • the motor may be a stepper motor, a DC motor, a coreless motor, or an ultrasonic motor.
  • the lens unit 200 also has a memory 222.
  • the memory 222 stores the control values of the lens moving mechanism 212 and the lens 210 moved by the lens moving mechanism 212.
  • the memory 222 may include at least one of flash memory such as SRAM, DRAM, EPROM, EEPROM, and USB memory.
  • the light quantity control mechanism 350 controls the light quantity of light incident on the image sensor 120.
  • the light quantity control mechanism 350 includes at least one of an aperture mechanism and a shutter mechanism.
  • the light quantity control mechanism 350 may include a plurality of aperture blades.
  • the light quantity control mechanism 350 may include an actuator.
  • the actuator may be an electromagnetic actuator.
  • the electromagnetic actuator may be an electromagnet, solenoid, or stepper motor.
  • the light quantity control mechanism 350 may receive an instruction from the lens control unit 220, drive the actuator, adjust the overlapping degree of the plurality of aperture blades, and adjust the size of the aperture.
  • FIG. 3 is an example of a cross-sectional view of the lens unit 200.
  • the lens section 200 includes a first lens frame 41 that holds the object-side lens group 1.
  • the lens section 200 includes a second lens frame 42 that holds the image side lens group 2.
  • the lens section 200 includes a light amount control mechanism 35 provided between the first lens frame 41 and the second lens frame 42.
  • the lens section 200 includes a movement that holds the first lens frame 41, the second lens frame 42 and the light amount control mechanism 35.
  • the cam pin 43 is fixed to the outer periphery of the moving frame 40.
  • the lens unit 200 includes a fixed barrel 44 having a cam groove in the optical axis direction on the outside of the moving frame 40 and a cam groove corresponding to the movement amount of the first lens group 1 and the second lens group 2 on the outside of the fixed barrel 44 CAM ⁇ 45.
  • the cam ring 45 rotates relative to the fixed cylinder 44 and the cam pin 43 is guided by the cam groove so that the moving frame 40 moves in the optical axis direction together with the first lens group 1 and the second lens group 2.
  • FIG. 4 is an enlarged view showing a portion surrounded by a frame indicated by symbol 500 in FIG. 3.
  • the moving frame 40 is made of resin, it is considered to fix the cam pin 43 to the moving frame 40 with a self-tapping screw 46.
  • the force of fixing the cam pin 32 to the moving frame 40 is weak. Therefore, when the cam pin 43 is impacted, a positional deviation from the moving frame 40 may occur. Therefore, it is considered to embed nuts in the moving frame 40 to increase the strength of the screw fixing portion. For example, consider inserting a metal nut into the interior by insert molding, and molding the moving frame 40 with resin. However, during insert molding, the accuracy of the position of the nut fluctuates, and the cam pin 32 may not be fixed to the moving frame 40 with high accuracy.
  • the cam pin 32 is fixed to the moving frame 40 with high accuracy without being affected by fluctuations in the position accuracy of the nut.
  • FIG. 5 is an example of a cross-sectional view showing the lens unit 200 according to this embodiment.
  • the lens unit 200 includes a moving frame 400, a first lens frame 410, a second lens frame 420, and a light amount control mechanism 350.
  • the first lens holder 410 holds the first lens group 415 including a plurality of lenses on the object side.
  • the second lens holder 420 holds the second lens group 425 including a plurality of lenses on the image side.
  • the first lens group 415 and the second lens group 425 are examples of the lens 210.
  • the light quantity control mechanism 350 is sandwiched between the moving frame 400 and the second lens frame 420 and fixed on the moving frame 400.
  • the cam pin 430 is fixed to the outer peripheral side of the moving frame 400.
  • the plurality of cam pins 430 may be radially fixed on the outer circumferential surface of the moving frame 400.
  • a fixed cylinder 440 having a cam groove that guides the cam pin 430 in the optical axis direction is arranged outside the moving frame 400.
  • a cam ring 450 is disposed on the outer side of the fixed cylinder 440.
  • the cam ring 450 has a cam groove corresponding to the movement amount of the first lens group 415 and the second lens group 425, and is rotatably supported on the fixed cylinder 440.
  • FIG. 6 shows an enlarged view of the portion enclosed by the frame indicated by symbol 502 in FIG. 5.
  • the moving frame 400 has a cavity 480 for receiving the nut 470 inside.
  • the screw 460 passes through the through hole of the cam pin 430 and the through hole of the moving frame 400 and is fastened by the nut 470, and the cam pin 430 is fixed to the moving frame 400.
  • the moving frame 400 may be composed of resin.
  • the screw 460 and the nut 470 may be made of metal.
  • the nut 470 may be a plate nut or a square nut.
  • FIG. 7 shows a schematic view of the fixed portion of the cam pin 430 and the moving frame 400.
  • the moving frame 400 has a recess 402 for disposing the cam pin 430.
  • the cam pin 430 is positioned by the side wall 405 of the recess 402.
  • the cam pin 430 has a through hole 432 for inserting a screw.
  • the moving frame 400 has a cavity 480 for receiving the nut 470 directly under the recess 402.
  • the concave portion 402 has a through hole 404 penetrating the cavity 480 on the bottom surface 403.
  • the moving frame 400 can be manufactured by resin injection molding.
  • the cavity 480 may be formed on the moving frame 400 during injection molding or after injection molding.
  • stainless steel SUS304 can be used.
  • the first lens frame 410, and the second lens frame 420 for example, polycarbonate PC-GF 30% can be used.
  • FIG. 8 shows a state where the cam pin 430 and the nut 470 are provided on the moving frame 400.
  • the moving frame 400 has an opening communicating with the cavity 480 on at least one of the object side and the image side.
  • the nut 470 can be inserted into the cavity 480 from the opening.
  • the nut 470 can be adhered to the wall surface of the cavity 480 by an adhesive 482.
  • the nut 470 may be adhered to the side wall of the cavity 480 by filling the cavity 480 with the adhesive in the state where the nut 470 is inserted into the cavity 480.
  • the adhesive 482 may be an elastic adhesive such as an ultraviolet curing resin or a UV curing epoxy adhesive.
  • the nut 470 By bonding the nut 470 with an elastic adhesive, the nut 470 can also be moved after bonding. Thus, even if the positions of the screw hole 472 and the through hole 404 of the nut 470 deviate, when the screw 460 is tightened with the nut 470, the nut 470 moves, and the positional deviation between the screw hole 472 and the through hole 404 can be eliminated.
  • the width W2 of the cavity is larger than the width W1 of the nut 470.
  • the diameter of the through hole 404 of the moving frame 400 is larger than the diameter of the screw hole 472 of the nut 470.
  • FIG. 9 shows a state where the screw 460 is inserted into the through hole 404.
  • 10 shows a state where the screw 460 is tightened by the nut 470 through the through hole 432 of the cam pin 430 and the through hole 404 of the moving frame 400.
  • the adhesive 482 has elasticity, even if the nut 470 deviates somewhat from the cam pin 430, it can move in the cavity 480.
  • the nut 470 can be moved relative to the cam pin 430 to eliminate positional deviation.
  • the cam pin 430 and the moving frame 400 are clamped and fixed by the nut 470 and the screw 460.
  • the cam pin 430 can be prevented from deviating from the position relative to the moving frame 400.
  • a self-tapping screw is used, in order to realize that the cam pin 430 does not deviate from the moving frame 400 even if the cam pin 430 is impacted, it is necessary to make the screw hole portion of the moving frame 400 have a certain thickness.
  • the self-tapping screw is not used, but the screw 460 is fastened by the nut 470, the portion of the through hole 404 of the moving frame 400 does not need to have a large thickness.
  • the screw 460 is fastened with the nut 470 to fix the cam pin 430. Even if the moving frame 400 is made of resin, the cam pin 430 can be fixed to the moving frame 400 with high accuracy.
  • the nut 470 is not embedded in the moving frame 400 by insert molding, but is inserted into a cavity 480 formed on the moving frame 400 in advance.
  • the cavity 480 has a space where the nut 470 can move.
  • the nut 470 is adhered to the cavity 480 by an adhesive 482 having elasticity. Therefore, even if the nut 470 adheres to the cavity 480 to some extent, the position deviation can be eliminated when the screw 460 is tightened.
  • the above-described imaging device 100 may be mounted on a mobile body.
  • the imaging device 100 may be mounted on an unmanned aerial vehicle (UAV) shown in FIG. 11.
  • UAV 10 may include a UAV body 20, a universal joint 50, a plurality of imaging devices 60, and an imaging device 100.
  • the universal joint 50 and the imaging device 100 are an example of an imaging system.
  • UAV10 is an example of a mobile body propelled by a propulsion unit.
  • the term “mobile body” includes not only UAVs, but also other flying bodies such as airplanes moving in the air, vehicles moving on the ground, and ships moving on the water.
  • the UAV main body 20 includes a plurality of rotors. Multiple rotors are an example of a propulsion unit.
  • the UAV main body 20 makes the UAV 10 fly by controlling the rotation of a plurality of rotors.
  • the UAV body 20 uses, for example, four rotors to make the UAV 10 fly.
  • the number of rotors is not limited to four.
  • UAV10 can also be a fixed-wing aircraft without a rotor.
  • the imaging device 100 is an imaging camera that images an object included in a desired imaging range.
  • the universal joint 50 rotatably supports the camera device 100.
  • the universal joint 50 is an example of a support mechanism.
  • the gimbal 50 uses an actuator to rotatably support the camera 100 with a pitch axis.
  • the universal joint 50 uses an actuator to further rotatably support the imaging device 100 about the roll axis and the yaw axis, respectively.
  • the gimbal 50 can change the posture of the imaging device 100 by rotating the imaging device 100 about at least one of the yaw axis, the pitch axis, and the roll axis.
  • the plurality of imaging devices 60 are sensing cameras that capture the surroundings of the UAV 10 in order to control the UAV 10's flight.
  • the two camera devices 60 can be installed on the front of the head of the UAV10.
  • the other two camera devices 60 may be installed on the bottom surface of the UAV 10.
  • the two camera devices 60 on the front side may be paired and function as a so-called stereo camera.
  • the two imaging devices 60 on the bottom surface side may also be paired to function as a stereo camera.
  • the three-dimensional space data around the UAV 10 can be generated from the images captured by the plurality of camera devices 60.
  • the number of imaging devices 60 included in the UAV 10 is not limited to four.
  • the UAV 10 only needs to have at least one imaging device 60.
  • UAV10 may include at least one camera 60 on the nose, tail, side, bottom, and top of UAV10, respectively.
  • the angle of view that can be set in the camera 60 can be larger than the angle of view that can be set in the camera 100.
  • the imaging device 60 may have a single focus lens or a fisheye lens.
  • the remote operation device 300 communicates with the UAV10 to remotely operate the UAV10.
  • the remote operation device 300 can perform wireless communication with the UAV 10.
  • the remote operation device 300 transmits to the UAV 10 instruction information indicating various commands related to the movement of the UAV 10 such as ascent, descent, acceleration, deceleration, forward, backward, and rotation.
  • the instruction information includes, for example, instruction information for increasing the height of the UAV 10.
  • the indication information may indicate the height at which UAV10 should be located.
  • the UAV 10 moves to be at the height indicated by the instruction information received from the remote operation device 300.
  • the instruction information may include an ascending command to ascend UAV10. UAV10 rises while receiving the rise command. When the height of UAV10 has reached the upper limit, UAV10 can limit ascent even if it accepts the ascent command.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Devices (AREA)
  • Lens Barrels (AREA)
  • Structure And Mechanism Of Cameras (AREA)

Abstract

一种镜头装置，当将由凸轮环（450）的凸轮槽导向的凸轮销（430）通过螺钉（460）固定在保持镜头等的保持架上时，凸轮销（430）的位置精度可能会产生波动。镜头装置可以包括镜头（210）。镜头装置可以包括移动架（400），其与镜头（210）一起移动。镜头装置可以包括凸轮销（430），其设置在移动架（400）表面。镜头装置可以包括凸轮环（450），其具有对凸轮销（430）进行导向的凸轮槽。镜头装置可以包括螺母（470），其设置在移动架（400）具有的腔体（480）内部。镜头装置可以包括螺钉（460），其通过螺母（470）的紧固将凸轮销（430）固定在移动架（400）上。

Description

镜头装置、摄像装置及移动体
优先权声明
本发明要求2018年12月20日递交的申请号为JP2018-238444、发明名称为“レンズ装置、撮像装置、及び移動体”的日本发明专利的优先权，该发明专利的全部内容在此引入。
技术领域
本发明涉及一种镜头装置、摄像装置及移动体。
背景技术
在专利文献1中，记载了通过偏心销将第一镜头架、第二镜头架螺纹固定的技术。
专利文献1：日本专利文献特开2000-66076号公报。
发明内容
当将由凸轮环的凸轮槽导向的凸轮销通过螺钉固定在保持镜头等的保持架上时，凸轮销的位置精度可能会产生波动。
本发明的一个方面所涉及的镜头装置可以包括镜头。镜头装置可以包括移动架，其与镜头一起移动。镜头装置可以包括凸轮销，其设置在移动架表面。镜头装置可以包括凸轮环，其具有对凸轮销进行导向的凸轮槽。镜头装置可以包括螺母，其设置在移动架具有的腔体内部。镜头装置可以包括螺钉，其通过螺母的紧固将凸轮销固定在移动架上。
移动架可以在表面具有凹部。凸轮销可以设置在凹部。
凸轮销可以具有第一通孔。凹部可以在底面上具有贯穿至腔体的第二通孔。螺钉可以穿过第一通孔及第二通孔而由螺母紧固。
凸轮销可以由凹部的侧壁定位。
第二通孔的直径可以大于螺母的螺孔直径。
螺母可以通过粘接剂粘合在腔体的内壁上。
粘接剂可以具有弹性。
腔体的宽度可以大于螺母的宽度。
螺母可以是板状。
螺母及螺钉可以由金属构成。
移动架可以由树脂构成。
本发明的一个方面所涉及的摄像装置可以包括上述镜头装置以及图像传感器。
本发明的一个方面所涉及的移动体可以是包括上述摄像装置并进行移动的移动体。
根据本发明的一个方面，当将凸轮销通过螺钉固定在保持镜头等的保持架上时，可以抑制凸轮销的位置精度的波动。
另外，上述本发明的内容中没有穷举本发明的所有必要的特征。另外，这些特征群的子集也可形成发明。
附图说明
图1是示出摄像装置的外观立体图的一个示例的图。
图2是示出摄像装置的功能块的示意图。
图3示出镜头部的剖面图的一个示例。
图4是示出图3所示的符号500的扩大图。
图5示出本实施方式所涉及的镜头部的剖面图的一个示例。
图6是示出图5中的符号502所示部分的扩大图。
图7是示出凸轮销和移动架的固定部分的示意图。
图8是示出凸轮销及螺母设置在移动架上的状态的示意图。
图9是示出将螺钉插入到通孔内途中的状态的示意图。
图10是示出螺钉穿过凸轮销的通孔、移动架的通孔而由螺母紧固的状态的示意图。
图11是示出无人驾驶航空器及远程操作装置的外观的一个示例的图。
符号说明：
10 UAV
20 UAV主体
32 凸轮销
35 光量控制机构
40 移动架
41、410 第一镜头架
42、420 第二镜头架
43、430 凸轮销
44、440 固定筒
45、450 凸轮环
46 自攻螺钉
50 万向节
60 摄像装置
100 摄像装置
102 摄像部
110 摄像控制部
120 图像传感器
130 存储器
160 显示部
162 指示部
200 镜头部
210 镜头
212 镜头移动机构
220 镜头控制部
222 存储器
300 远程操作装置
350 光量控制机构
402 凹部
403 底面
404 通孔
405 侧壁
415 第一镜头组
425 第二镜头组
432 通孔
460 螺钉
470 螺母
472 螺孔
480 腔体
482 粘接剂
具体实施方式
以下，通过发明的实施方式来对本发明进行说明，但是以下实施方式并非限制权利要求书所涉及的发明。此外，实施方式中说明的特征的组合并非全部是发明的解决方案所必须的。对本领域普通技术人员来说，显然可以对以下实施方式加以各种变更或改良。从权利要求书的记载可知，加以了这样的变更或改良的方式都可包含在本发明的技术范围之内。
在权利要求书、说明书、说明书附图以及说明书摘要中包含作为著作权所保护对象的事项。任何人只要如专利局的文档或者记录所表示的那样进行这些文件的复制，著作权人就无法异议。但是，在除此以外的情况下，保留一切的著作权。
本发明的各种实施方式可参照流程图及框图来记载，这里，方框可表示(1)执行操作的过程的阶段或者(2)具有执行操作的作用的装置的“部”。特定的阶段和“部”可以通过可编程电路和/或处理器来实现。专用电路可以包括数字和/或模拟硬件电路。可以包括集成电路(IC)和/或分立电路。可编程电路可以包括可重构硬件电路。可重构硬件电路可以包括逻辑与、逻辑或、逻辑异或、逻辑与非、逻辑或非、及其它逻辑操作、触发器、寄存器、现场可编程门阵列(FPGA)、可编程逻辑阵列(PLA)等存储器元件等。
计算机可读介质可以包括可以对由适宜的设备执行的指令进行储存的任意有形设备。其结果是，具备储存于其中的指令的计算机可读介质具备一种包括指令的产品，该指令可以执行以创建用于执行流程图或框图所指定的操作的手段。作为计算机可读介质的示例，可以包括电子存储介质、磁存储介质、光学存储介质、电磁存储介质、半导体存储介质等。作为计算机可读介质的更具体的示例，可以包括软盘(注册商标)、软磁盘、硬盘、随机存取存储器(RAM)、只读存储器(ROM)、可擦除可编程只读存储器(EPROM或者闪存)、电可擦可编程只读存储器(EEPROM)、静态随机存取存储器(SRAM)、光盘只读存储器(CD-ROM)、数字多用途光盘(DVD)、蓝光(RTM)光盘、记忆棒、集成电路卡等。
计算机可读指令可以包括由一种或多种编程语言的任意组合记述的源代码或者目标代码中的任意一个。源代码或者目标代码包括传统的程序式编程语言。传统的程序式编程语言可以为汇编指令、指令集架构(ISA)指令、机器指令、与机器相关的指令、微代码、固件指令、状态设置数据、或者Smalltalk、JAVA(注册商标)、C++等面向对象编程语言以及“C”编程语言或者类似的编程语言。计算机可读指令可以在本地或者经由局域网(LAN)、互联网等广域网(WAN)提供给通用计算机、专用计算机或者其它可编程数据处理装置的处理器或可编程电路。处理器或可编程电路可以执行计算机可读指令，以创建用于执行流程图或框图所指定操作的手段。作为处理器的示例，包括计算机处理器、处理单元、微处理器、数字信号处理器、控制器、微控制器等。
图1是示出本实施方式所涉及的摄像装置100的外观立体图的一个示例的图。图2是示出本实施方式所涉及的摄像装置100的功能块的示意图。
摄像装置100包括摄像部102及镜头部200。摄像部102包括图像传感器120、摄像控制部110及存储器130。图像传感器120可以由CCD或CMOS构成。图像传感器120将由镜头210成像的光学图像的图像数据输出至摄像控制部110。摄像控制部110可以由CPU或MPU等微处理器、MCU等微控制器等构成。存储器130可以为计算机可读存储介质，可以包含SRAM、DRAM、EPROM、EEPROM及USB存储器等闪存中的至少一个。存储器130储存摄像控制部110对图像传感器120等进行控制所需的程序等。存储器130可以设置于摄像装置100的壳体内部。存储器130可以设置成可从摄像装置100的壳体中拆卸下来。
摄像部102还可以包括指示部162及显示部160。指示部162是从用户接受针对摄像装置100的指示的用户界面。显示部160显示由图像传感器120所摄像的图像、摄像装置100的各种设定信息等。显示部160可以由触摸面板构成。
镜头部200包括多个镜头210、光量控制机构350、镜头移动机构212及镜头控制部220。多个镜头210可以起到单焦点镜头的作用。多个镜头210沿光轴可移动地配置。镜头部200可以是被设置成能够相对摄像部102拆装的可更换镜头。镜头移动机构212使多个镜头210沿光轴移动。镜头控制部220按照来自摄像部102的镜头控制指令来驱动镜头移动机构212，使一个或者多个镜头210沿光轴方向移动。例如，镜头控制指令为聚焦控制指令。镜头移动机构212可以包括电动机、由电动机驱动的凸轮环及随着凸轮环的旋转与镜头一起在光轴方向移动的移动架。电动机可以是步进电机、DC电动机、无芯电动机或者超声波电动机。
镜头部200还具有存储器222。存储器222存储镜头移动机构212及通过镜头移动机构212移动的镜头210的控制值。存储器222可以包括SRAM、DRAM、EPROM、EEPROM及USB存储器等闪存中的至少一个。
光量控制机构350控制射入图像传感器120中的光的光量。光量控制机构350包括光圈机构及快门机构中的至少一个。光量控制机构350可以包括多个光圈叶片。光量控制机构350可以包括致动器。致动器可以是电磁致动器。电磁致动器可以是电磁铁、螺线管或者步进电机。光量控制机构350可以接受来自镜头控制部220的指令，驱动致动器，调整多个光圈叶片的重叠程度，调整口径的大小。
图3是示出镜头部200的剖面图的一个示例。镜头部200包括保持物侧镜头组1的第一镜头架41。镜头部200包括保持像侧镜头组2的第二镜头架42。镜头部200包括设置在第一镜头架41和第二镜头架42之间的光量控制机构35，此外，镜头部200包括保持第一镜头架41、第二镜头架42及光量控制机构35的移动架40。凸轮销43固定在移动架40的外周。镜 头部200在移动架40的外侧包括具有沿光轴方向的凸轮槽的固定筒44以及在固定筒44的外侧具有与第一镜头组1及第二镜头组2的移动量对应的凸轮槽的凸轮环45。凸轮环45相对于固定筒44旋转，且凸轮销43由凸轮槽导向，使得移动架40与第一镜头组1及第二镜头组2一起在光轴方向上移动。
图4是示出图3中的符号500所示的框所包围部分的扩大图。当移动架40由树脂构成时，考虑用自攻螺钉46将凸轮销43固定在移动架40上。然而，当用自攻螺钉46将凸轮销43固定在移动架40上时，凸轮销32固定在移动架40上的力较弱。因此，当凸轮销43受到冲击时，相对于移动架40可能会产生位置的偏离。因此，考虑在移动架40内埋设螺母，来增加螺钉固定部分的强度。例如，考虑通过嵌入成形将金属制的螺母埋设在内部，并用树脂成形移动架40。然而，在进行嵌入成形时，螺母的位置精度会产生波动，凸轮销32可能会无法精度良好地固定于移动架40。
因此，在本实施方式中，不会受到螺母位置精度的波动影响，而将凸轮销32精度良好地固定在移动架40上。
图5是示出本实施方式所涉及的镜头部200的剖面图的一个示例。镜头部200具备移动架400、第一镜头架410、第二镜头架420及光量控制机构350。第一镜头架410对物侧的包含多个镜头的第一镜头组415进行保持。第二镜头架420对像侧的包含多个镜头的第二镜头组425进行保持。第一镜头组415及第二镜头组425为镜头210的一个示例。
光量控制机构350夹在移动架400和第二镜头架420之间，并固定在移动架400上。凸轮销430固定在移动架400的外周侧。多个凸轮销430可以呈放射状固定在移动架400的外周面上。在移动架400的外侧配置有固定筒440，所述固定筒440具有在光轴方向上对凸轮销430导向的凸轮槽。在固定筒440的外侧配置有凸轮环450，所述凸轮环450具有与第一镜头组415及第二镜头组425的移动量对应的凸轮槽，并可旋转地支撑于固定筒440上。
图6示出图5中的符号502所示的框所包围部分的扩大图。移动架400在内部具有容纳螺母470的腔体480。螺钉460穿过凸轮销430的通孔及移动架400的通孔而由螺母470紧固，凸轮销430固定在移动架400上。移动架400可以由树脂构成。螺钉460及螺母470可以由金属构成。螺母470可以是板螺母或者四角螺母。
图7示出凸轮销430和移动架400的固定部分的示意图。移动架400具有用于配置凸轮销430的凹部402。凸轮销430由凹部402的侧壁405定位。
凸轮销430具有用于插入螺钉的通孔432。移动架400在凹部402的正下方具有用于容纳螺母470的腔体480。凹部402在底面403具有贯穿至腔体480的通孔404。移动架400可以通过树脂的注射成形制得。腔体480可以在注射成形时或者注射成形后的阶段形成于移动 架400上。螺母470的材料，例如，可以使用不锈钢SUS304。移动架400、第一镜头架410及第二镜头架420的材料，例如，可以使用聚碳酸酯PC-GF30％。
图8示出凸轮销430及螺母470设置在移动架400上的状态。移动架400在物侧或者像侧中的至少一个的面上具有与腔体480连通的开口。螺母470可以从该开口插入到腔体480中。螺母470可以通过粘接剂482粘合在腔体480的壁面上。通过在螺母470插入到腔体480的状态下，将粘接剂充填至腔体480中，也可以将螺母470粘合在腔体480的侧壁上。在这里，例如，粘接剂482可以是紫外线硬化树脂或者UV硬化性环氧粘接剂等弹性粘接剂。通过用弹性粘接剂将螺母470粘合，螺母470在粘合后也可以移动。由此，即使螺母470的螺孔472和通孔404的位置产生偏离，用螺母470将螺钉460紧固时，螺母470移动，可消除螺孔472和通孔404之间的位置偏离。
另外，为了使螺母470可在腔体480内移动，腔体的宽度W2大于螺母470的宽度W1。此外，移动架400的通孔404的直径大于螺母470的螺孔472的直径。由此，即使螺母470相对于通孔404多少产生偏离，也能够通过通孔404将螺钉460插入螺孔472中。移动架400的通孔404不对凸轮销430起定位作用。
图9示出将螺钉460插入到通孔404内途中的状态。图10示出螺钉460通过凸轮销430的通孔432、移动架400的通孔404而由螺母470紧固的状态。如上所述，由于粘接剂482具有弹性，因此即使螺母470相对于凸轮销430多少产生位置偏离，其在腔体480内也可以移动。由此，通过对螺钉460的紧固，使得螺母470能够相对于凸轮销430移动而消除位置偏离。另外，通过螺母470和螺钉460将凸轮销430和移动架400夹持并固定，即使凸轮销430受到冲击，也能够防止凸轮销430相对于移动架400产生位置的偏离。当使用自攻螺钉时，为了实现即使凸轮销430受到冲击凸轮销430也不会相对于移动架400产生位置偏离，需要使移动架400的螺孔部分具有一定的厚度。然而，当不使用自攻螺钉，而是通过用螺母470将螺钉460紧固时，移动架400的通孔404部分则不需要具有太大的厚度。
用螺母470将螺钉460紧固而固定凸轮销430，即使移动架400由树脂构成，也能够精度良好地将凸轮销430固定在移动架400上。而且，螺母470不是通过嵌入成形嵌入在移动架400内，而是插入配置到预先形成于移动架400上的腔体480中。腔体480具有可供螺母470移动的空间。并且，螺母470通过具有弹性的粘接剂482粘合在腔体480内。因此，即使螺母470粘合在腔体480内时多少产生位置偏离，用螺钉460紧固时可以消除该位置偏离。
上述这样的摄像装置100也可以搭载在移动体上。摄像装置100也可以搭载在图11所示的无人驾驶航空器(UAV)上。UAV10可以具备UAV本体20、万向节50、多个摄像装置60以及摄像装置100。万向节50及摄像装置100为摄像系统的一个示例。UAV10为由推进 部推进的移动体的一个示例。移动体是指不仅包括UAV，还包含在空中移动的其他的飞机等飞行体、在地面移动的车辆、在水上移动的船舶等的概念。
UAV主体20具备多个旋翼。多个旋翼为推进部的一个示例。UAV主体20通过控制多个旋翼的旋转而使UAV10飞行。UAV主体20使用例如四个旋翼来使UAV10飞行。旋翼的数量不限于四个。另外，UAV10也可以是没有旋翼的固定翼机。
摄像装置100为对包含在所期望的摄像范围内的被摄体进行摄像的摄像用相机。万向节50可旋转地支撑摄像装置100。万向节50为支撑机构的一个示例。例如，万向节50使用致动器以俯仰轴可旋转地支撑摄像装置100。万向节50使用致动器进一步分别以滚转轴和偏航轴为中心可旋转地支撑摄像装置100。万向节50可通过使摄像装置100以偏航轴、俯仰轴以及滚转轴中的至少一个为中心旋转，来变更摄像装置100的姿势。
多个摄像装置60是为了控制UAV10的飞行而对UAV10的周围进行拍摄的传感用相机。两个摄像装置60可以设置于UAV10的机头、即正面。并且，其它两个摄像装置60可以设置于UAV10的底面。正面侧的两个摄像装置60可以成对，起到所谓的立体相机的作用。底面侧的两个摄像装置60也可以成对，起到立体相机的作用。可以根据由多个摄像装置60所拍摄的图像来生成UAV10周围的三维空间数据。UAV10所具备的摄像装置60的数量不限于四个。UAV10具备至少一个摄像装置60即可。UAV10也可以在UAV10的机头、机尾、侧面、底面及顶面分别具备至少一个摄像装置60。摄像装置60中可设定的视角可大于摄像装置100中可设定的视角。摄像装置60也可以具有单焦点镜头或鱼眼镜头。
远程操作装置300与UAV10通信，以远程操作UAV10。远程操作装置300可以与UAV10进行无线通信。远程操作装置300向UAV10发送表示上升、下降、加速、减速、前进、后退、旋转等与UAV10的移动有关的各种指令的指示信息。指示信息包括例如使UAV10的高度上升的指示信息。指示信息可以表示UAV10应该位于的高度。UAV10进行移动，以位于从远程操作装置300接收的指示信息所表示的高度。指示信息可以包括使UAV10上升的上升指令。UAV10在接受上升指令的期间上升。在UAV10的高度已达到上限高度时，即使接受上升指令，UAV10也可以限制上升。
以上使用实施方式对本发明进行了说明，但是本发明的技术范围并不限于上述实施方式所记载的范围。对本领域普通技术人员来说，显然可以对上述实施方式加以各种变更或改良。从权利要求书的记载可知，加以了这样的变更或改良的方式都可包含在本发明的技术范围之内。
应该注意的是，权利要求书、说明书以及说明书附图中所示的装置、系统、程序以及方法中的动作、顺序、步骤以及阶段等各项处理的执行顺序，只要没有特别明示“在...之前”、“事 先”等，且只要前面处理的输出并不用在后面的处理中，则可以任意顺序实现。关于权利要求书、说明书以及附图中的操作流程，为方便起见而使用“首先”、“接着”等进行了说明，但并不意味着必须按照这样的顺序实施。

Claims (13)

  1. 一种镜头装置，其特征在于，包括：
    镜头；
    移动架，其与所述镜头一起移动；
    凸轮销，其设置在所述移动架表面；
    凸轮环，其具有对所述凸轮销进行导向的凸轮槽；
    螺母，其设置在所述移动架具有的腔体内部；以及
    螺钉，其通过所述螺母的紧固将所述凸轮销固定在所述移动架上。
  2. 根据权利要求1所述的镜头装置，其特征在于，所述移动架在所述表面具有凹部，所述凸轮销设置在所述凹部。
  3. 根据权利要求2所述的镜头装置，其特征在于，所述凸轮销具有第一通孔，
    所述凹部在底面具有贯穿至所述腔体的第二通孔，
    所述螺钉穿过所述第一通孔及所述第二通孔而由所述螺母紧固。
  4. 根据权利要求2所述的镜头装置，其特征在于，所述凸轮销由所述凹部的侧壁定位。
  5. 根据权利要求3所述的镜头装置，其特征在于，所述第二通孔的直径大于所述螺母的螺孔的直径。
  6. 根据权利要求1所述的镜头装置，其特征在于，所述螺母通过粘接剂粘合在所述腔体的内壁上。
  7. 根据权利要求6所述的镜头装置，其特征在于，所述粘接剂具有弹性。
  8. 根据权利要求1所述的镜头装置，其特征在于，所述腔体的宽度大于所述螺母的宽度。
  9. 根据权利要求1所述的镜头装置，其特征在于，所述螺母为板状。
  10. 根据权利要求1所述的镜头装置，其特征在于，所述螺母及所述螺钉由金属构成。
  11. 根据权利要求1所述的镜头装置，其特征在于，所述移动架由树脂构成。
  12. 一种摄像装置，其特征在于，包括：权利要求1至11中任一项所述的镜头装置以及图像传感器。
  13. 一种移动体，其特征在于，其包括根据权利要求12所述的摄像装置并进行移动。
PCT/CN2019/122374 2018-12-20 2019-12-02 镜头装置、摄像装置及移动体 WO2020125390A1 (zh)

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