WO2021108949A1 - Dispositif de compensation de tremblement, dispositif optique et caméra - Google Patents

Dispositif de compensation de tremblement, dispositif optique et caméra Download PDF

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Publication number
WO2021108949A1
WO2021108949A1 PCT/CN2019/122377 CN2019122377W WO2021108949A1 WO 2021108949 A1 WO2021108949 A1 WO 2021108949A1 CN 2019122377 W CN2019122377 W CN 2019122377W WO 2021108949 A1 WO2021108949 A1 WO 2021108949A1
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WO
WIPO (PCT)
Prior art keywords
group
stator
mover
magnetic
imaging unit
Prior art date
Application number
PCT/CN2019/122377
Other languages
English (en)
Chinese (zh)
Inventor
田赫
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.)
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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 CN201980095017.0A priority Critical patent/CN113678058A/zh
Priority to PCT/CN2019/122377 priority patent/WO2021108949A1/fr
Publication of WO2021108949A1 publication Critical patent/WO2021108949A1/fr

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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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • 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
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • 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

  • This application relates to the technical field of photographing and anti-shake, in particular to a shake compensation device, an optical device and a camera.
  • the camera's anti-shake function is an important manifestation of judging the level of camera design.
  • the current camera anti-shake is mainly improved on the lens.
  • a few improvements to the imaging unit are also equipped with anti-shake devices around the sides of the imaging unit. Regardless of the anti-shake device, the overall length and width of the camera will increase, and if the camera's length and width are not increased, only a very small size anti-shake device can be installed, and the anti-shake effect is poor.
  • the purpose of this application is to provide a shake compensation device, an optical device and a camera that can solve the above-mentioned problems.
  • the present application provides a jitter compensation device, including a stator group and a mover group, the stator group is used to drive the mover group to move, the mover group is used to be fixedly connected to the imaging unit, so The stator group and the mover group are arranged on a side of the imaging unit facing away from the imaging surface.
  • the present application provides an optical device, including an imaging unit and a shake compensation device, and the shake compensation device is arranged on a side of the imaging unit that faces away from the imaging surface.
  • the present application provides a camera including a body and an optical device, the optical device is arranged in the body, the optical device includes an imaging unit and a shake compensation device, the shake compensation device is arranged in The side of the imaging unit facing away from the imaging surface.
  • the stator group drives the mover group to move, which can drive the imaging unit to move.
  • the stator group and mover group are both arranged on the side of the imaging unit facing away from the imaging surface, that is, it is not necessary to drive the imaging unit to move on the sides of the imaging unit.
  • the size around the imaging unit can be reduced, and the jitter compensation device is adapted to the shape of the imaging unit and stacked in a manner that is more convenient for the compact design of the optical device and the camera, and the size is small, which is convenient to carry and use.
  • Fig. 1 is a schematic structural diagram of an optical device according to an embodiment
  • FIG. 2 is a schematic structural diagram of a camera according to an embodiment, in which the housing is not shown;
  • FIG. 3 is a schematic structural diagram of the camera of FIG. 2 from another perspective
  • FIG. 4 is a schematic diagram of an exploded structure of a camera according to an embodiment, including partial enlarged schematic diagrams A-1, B, C, and D;
  • Fig. 5 is a schematic diagram of an exploded structure of the camera of Fig. 4 from another perspective, including partial enlarged diagrams A-2, E, and F.
  • a component when referred to as being "fixed to” another component, it can be directly on the other component or a centered component may also exist. When a component is considered to be “connected” to another component, it can be directly connected to the other component or there may be a centered component at the same time.
  • the optical device includes an imaging unit 30 and a shake compensation device.
  • the imaging unit 30 includes a sensor circuit board 31 and an imaging sensor 32.
  • the imaging sensor 32 is arranged on one side surface of the sensor circuit board 31.
  • a plurality of control devices and circuits are provided on the sensor circuit board 31 to provide control signals for the imaging sensor 32.
  • the image and video captured by the imaging sensor 32 are received.
  • the imaging sensor 32 is, for example, a charge-coupled device sensor (CCD) or a complementary metal oxide semiconductor sensor (Complementary Metal Oxide Semiconductor, CMOS). Of course, it can also correspond to other spectral ranges other than visible light such as infrared and ultraviolet.
  • the size of the imaging sensor 32 may be medium format, full frame, APS-C, and other specifications.
  • the imaging sensor 32 has a mounting surface and an imaging surface 321, and the mounting surface is connected to the sensor circuit board 31.
  • the imaging surface 321 is opposite to the installation surface, and the imaging surface 321 is used for receiving light.
  • the shake compensation device is arranged on the side of the sensor circuit board 31 facing away from the imaging surface 321 of the imaging sensor 32.
  • the imaging unit can be reduced.
  • the size in the side direction around 30 and the way that the jitter compensation device is adapted to the shape of the imaging unit and arranged in layers further makes the optical device 100 compact in structure, small in size, and easy to carry and use.
  • an embodiment of the present application also provides a camera 1000, combined with Figures 1 and 4,
  • the camera 1000 includes a body and an optical device 100, the body includes a lens bayonet assembly 10 and a housing (in the figure Not shown).
  • the optical device 100 is arranged in the body. Specifically, the optical device is connected to the lens bayonet assembly 10, and the housing is connected to the lens bayonet assembly 10, and surrounds the optical device 100, so that the optical device 100 is all located in the housing and the lens card.
  • the lens mount assembly 10 is provided with a viewfinder 101, and the viewfinder 101 corresponds to the imaging surface 321 of the imaging sensor 32.
  • the lens mount assembly 10 includes a lens mount bracket 11 and a lens mount 12.
  • the lens mount 12 is fixed on the lens mount bracket 11.
  • the lens mount 12 has a circular ring shape and encloses the viewfinder 101.
  • the inner wall of the lens mount 12 is provided with a plurality of engaging portions 13, and the engaging portions 13 are used to engage with a lens (not shown in the figure) to fix the lens on the lens mount 12.
  • the lens can be separated from the engaging portion 13 to achieve this.
  • the light enters the viewfinder 101 through the lens structure in the lens, and is irradiated on the imaging surface 321 of the imaging sensor 32, and the imaging sensor 32 acquires the light to form an image.
  • the lens bayonet bracket 11 is provided with a connecting post 14 for connecting the optical device 100.
  • the connecting post 14 can be matched with a screw or other structure to fix the lens bayonet assembly 10 and the optical device 100.
  • the optical device 100 includes an imaging unit 30 and a shake compensation device.
  • the imaging unit 30 includes an imaging sensor 32.
  • the shake compensation device is disposed on the imaging surface 321 side of the imaging unit 30 facing away from the imaging sensor 32.
  • the camera 1000 is integrated, the imaging unit 30 is provided with a shake compensation device on the side of the imaging surface 321 facing away from the imaging sensor 32, and the anti-shake device is installed in the direction perpendicular to the imaging surface 321.
  • the structure instead of being arranged around the imaging unit 30, can reduce the size of the camera's imaging unit 30 around the side direction, so that the camera 1000 has a compact structure, a small size, and is convenient to carry and use.
  • the jitter compensation device is described in detail below.
  • the shake compensation device includes a stator group (refer to reference numerals 40 and/or 80) and a mover group 60.
  • the stator group is used to drive the mover group 60 to move, and the imaging unit 30 and the mover group 60 Fixed connection.
  • the first direction X and the second direction Y are parallel to the imaging surface 321, and the third direction Z is perpendicular to the imaging surface 321.
  • the imaging unit 30 and the shake compensation device are arranged in sequence.
  • the stator group and the mover group 60 are arranged in a layered structure along the third direction Z.
  • the mover group 60 is fixedly connected to the imaging unit 30, and the stator group drives the mover group 60 to move.
  • the moving direction can be along the first direction X and along the The second direction Y, rotation in a plane formed parallel to the first direction X and the second direction Y, etc., can make the imaging unit 30 follow the movement.
  • the imaging unit 30 moves to compensate for the shake, so as to achieve the shake The effect of compensation.
  • the shake compensation device can drive the imaging unit 30 to move by the stator group driving the mover group 60 to move, and the stator group and the mover group 60 are both arranged on the side of the imaging unit 30 facing away from the imaging surface 321 of the imaging sensor 32. That is, it is not necessary to drive the imaging unit 30 to move around the sides of the imaging unit 30, and the size around the imaging unit 30 can be reduced.
  • the jitter compensation device is adapted to the shape of the imaging unit and stacked in a manner that is more convenient for the structure of the optical device 100 and the camera 1000. Compact design, small size, easy to carry and use.
  • the number of the stator group is one. Please refer to FIG. 4, the stator group 40 is arranged between the imaging unit 30 and the mover group 60, or the stator group 80 is arranged on the back of the mover group 60 One side of the imaging unit 30. With this setting, the overall size of the shake compensation device can be further compressed, thereby adapting to the miniaturization solutions of various format cameras.
  • the number of stator groups is two, the stator group includes a first stator group 40 and a second stator group 80, the first stator group 40 is provided in the imaging unit 30 and the motor Among the sub-groups 60, the second stator group 80 is provided on the side of the moving sub-group 60 facing away from the imaging unit 30.
  • This embodiment can drive the mover group 60 more sensitively, thereby providing the imaging unit 30 with a better stabilization effect.
  • the imaging unit 30 is driven to move on the back side of the imaging surface 321 of the imaging sensor 32 of the imaging unit 30, which can reduce the size of the imaging unit 30 in the lateral direction.
  • the stator assembly 40 includes a stator mounting plate 41 and a magnetic member 42, and the magnetic member 42 is mounted on the stator mounting plate 41.
  • the stator mounting plate 41 is provided with a magnetic component mounting groove 411/412 corresponding to the shape of the magnetic component 42.
  • the magnetic component mounting groove 411/412 is a groove dug on the stator mounting plate 41.
  • the component mounting slots 411/412 do not penetrate both sides of the stator mounting plate 41.
  • the installation manner of the magnetic element 42 and the stator mounting plate 41 may also include any other possible manners, including but not limited to glue connection, welding, and clamping.
  • the mover group 60 includes a mover mounting plate 61 and an electromagnet 62, and the electromagnet 62 is mounted on the mover mounting plate 61.
  • the manner in which the electromagnet 62 is mounted on the mover mounting plate 61 may be the same as the manner in which the magnetic member 42 is mounted on the stator mounting plate 41, or may be different.
  • the magnetic member 42 of the stator group 40 has a magnetic field.
  • the electromagnet 62 of the mover group 60 is subjected to magnetic force in the magnetic field after being energized.
  • the mover group 60 moves under the action of the magnetic force, thereby driving the imaging unit 30 fixedly connected to the mover group 60 mobile. It adopts the form of magnetic force, the structure is simple, and it is easy to realize.
  • the magnetic member 42 includes a first magnetic part 421 and a second magnetic part 422, and the electromagnet 62 includes a first coil part 621 and a second coil part 622.
  • the first magnetic portion 421 is opposed to the first coil portion 621, and the second magnetic portion 422 is opposed to the second coil portion 621.
  • the first magnetic portion 421 is used to drive the first coil portion 621 to move along a first straight line, and the second magnetic portion 422 is used to drive the second coil portion 622 to move along a second straight line.
  • the first magnetic part 421 and the second magnetic part 422 may be permanent magnets, and the first coil part 621 and the second coil part 622 may be coils wound with wires.
  • the first straight line coincides with the first direction X
  • the second straight line coincides with the second direction Y
  • the first coil part 621 moves along the first straight line, including movement in the first direction X and movement in the opposite direction of the first direction X
  • the second coil part 622 moves along the second straight line, including movement in the second direction Y and movement in the opposite direction of the second direction Y.
  • the first magnetic part 421 drives the first coil part 621 to move along the first straight line
  • the second magnetic part 422 drives the second coil part 622 to move along the second straight line.
  • the first is reasonably selected according to the direction of shaking.
  • the moving direction of the coil part 621 and the second coil part 622 realizes shake compensation.
  • the first coil part 621 moves along the first straight line, that is, the opposite direction of the first direction X, which can compensate for the displacement of the jitter;
  • the second coil part 622 moves along the second straight line, that is, the second direction Y, which can compensate for the displacement of the shake.
  • the first straight line intersects the second straight line, and preferably, the first straight line and the second straight line are perpendicular.
  • the first straight line and the second straight line are obviously not parallel, and the two straight lines intersect.
  • the jitter can be decomposed.
  • the first coil part 621 and the second coil part 622 are respectively controlled to move to compensate for the two jitter components, so that the mover mounting plate 61 can be made
  • the moving direction is opposite to the jitter direction to realize jitter compensation.
  • the number of the first coil parts 621 is at least two, and the at least two first coil parts 621 are arranged side by side or sequentially in parallel to the first straight line (refer to the first direction X).
  • the number of the first coil parts 621 can be 2, 3, 4, etc. The larger the number, the stronger the magnetic force received, and the better the effect of compensating for jitter.
  • the first coil part 621 moves along the first straight line (refer to the first direction X) to compensate for the shake on the first straight line or to compensate for the shake component on the first straight line.
  • the number of the second coil parts 622 is at least two, and the at least two second coil parts 622 are arranged side by side or sequentially in parallel to the second straight line (refer to the second direction Y).
  • the number of the second coil parts 622 can be 2, 3, 4, etc. The larger the number, the stronger the received magnetic force and the better the effect of compensating for jitter.
  • the second coil part 622 moves along the second straight line (refer to the second direction Y) to compensate for the shake on the second straight line or to compensate for the shake component on the second straight line.
  • At least two first coil parts 621 can be arranged side by side parallel to the straight line of the short side of the imaging unit, and at least two second coil parts The lines 622 parallel to the long side of the imaging unit are arranged in sequence.
  • the number of the first coil part 621 and the second coil part 622 there may be multiple combinations of the number of the first coil part 621 and the second coil part 622, and there is no need to limit the number of the first coil part 621 and the second coil part 622 to at least two.
  • the number of the first coil part 621 is one, and the number of the second coil part 622 is two, and vice versa, the aforementioned effect of compensating for jitter can also be achieved.
  • the number of at least one of the first coil part 621 and the second coil part 622 may be at least two.
  • the number of the first coil parts 621 is at least two, and the current flow directions of the at least two first coil parts 621 are not completely the same.
  • the number of the first coil parts 621 is two, then The current flow directions of the two first coil parts 621 are different.
  • the number of the first coil parts 621 is three, the current flow direction of one of the first coil parts 621 is different from the current flow direction of the other two first coil parts 621. No matter how the three first coil parts 621 are arranged, there must be two adjacent first coil parts 621 that have different current flow directions.
  • the first magnetic portion 421 drives the adjacent first coil portions 621 of the at least two first coil portions 621 to move in opposite directions to drive the subgroup 60 to rotate.
  • the at least two first coil parts 621 may have a certain distance difference from the first line on the second straight line, so that the magnetic force received by the adjacent first coil parts 621 forms a bending moment without The magnetic forces that cancel each other out on the same straight line are formed, so that the adjacent first coil parts 621 can move in opposite directions.
  • the direction of the voltage can also be different. On the basis of the current flow direction or the direction of the voltage, it can also be performed by controlling the magnitude of the current or voltage to be different.
  • the magnetic force of the at least two first coil parts 621 is controlled, so as to control the rotation angle of the mover group 60.
  • the rotation of the mover group 60 is always maintained on the same plane (that is, the plane formed by the first direction X and the second direction Y).
  • the number of the first coil parts 621 is at least two and the current flows in different directions. Under the magnetic field of the first magnetic part 421, the magnetic force in different directions can be applied to realize the rotation of the mover group 60.
  • the structure is simple and easy to realize.
  • the current flow directions of the at least two second coil parts 622 are not completely the same, and the second magnetic part 622 drives the adjacent ones of the at least two second coil parts 622
  • the second coil part 622 moves in the opposite direction to drive the subgroup 60 to rotate.
  • the arrangement of the second coil part 622 refer to the first coil part 621, and will not be described again.
  • the rotation of the mover group 60 can be realized by controlling the first coil part 621 or the second coil part 622, and the rotation of the mover group 60 can also be realized by controlling the first coil part 621 and the second coil part 622 at the same time.
  • the imaging sensor 32 has a rectangular shape and includes a long side and a short side.
  • the long side extends along a first straight line (refer to the first direction X), and the short side extends along a second straight line (refer to the second direction Y).
  • the size of the long side is larger than that of the short side. size.
  • the number of the first magnetic portion 421 is at least one, and the at least one first magnetic portion 421 is arranged side by side or sequentially in parallel to the first straight line (refer to the first direction X).
  • the number of the first magnetic portion 421 may be 1, 2, 3, etc.
  • the first magnetic portion 421 corresponds to the first coil portion 621, and the first coil portion 621 moves along the first straight line to drive the short side of the imaging sensor 32 to move. Since the size of the short side of the imaging sensor 32 is relatively small, the magnetic force driving the movement of the short side is relatively small, and the number of the first magnetic portion 421 corresponding thereto may be one.
  • the number of the second magnetic parts 422 is at least two, and the at least two second magnetic parts 422 are arranged side by side or sequentially in parallel to the second straight line.
  • the number of the second magnetic portion 422 may be 2, 3, 4, etc.
  • the second magnetic portion 422 corresponds to the second coil portion 622, and the second coil portion 622 moves along the second straight line to drive the long side of the imaging sensor 32 to move. Since the size of the long side of the imaging sensor 32 is relatively large, and the magnetic force driving the long side to move is relatively large, the number of the corresponding second magnetic parts 422 can be greater than the number of the first magnetic parts 421 to adapt to anti-shake The corresponding moment of the required driving force along the long side.
  • the number of the first magnetic portion 421 is one, the number of the second magnetic portion 422 is two; the number of the first magnetic portion 421 is two, the number of the second magnetic portion 422 is four, and so on.
  • at least one first magnetic part 421 can be arranged parallel to the straight line of the short side of the imaging unit, and at least two second magnetic parts 422 are parallel.
  • the straight lines on the long side of the imaging unit are set in sequence.
  • the second magnetic portion 422 is taken as an example, and the first magnetic portion 421 can be referred to.
  • the second magnetic portion 422 includes at least two first magnets 4221 and at least one second magnet 4222.
  • the width of the first magnet 4221 (the dimension in the second direction Y is the width) is larger than that of the second magnet 4222.
  • the first magnets 4221 are alternately arranged, and the magnetizing directions of the first magnets 4221 and the second magnets 4222 are different.
  • the structure in which the wide first magnets 4221 and the narrow second magnets 4222 of the second magnetic portion 422 are alternately arranged and magnetized in different directions can change the magnetic field distribution of the second magnetic portion 422, so that the second coil portion 622 receives more magnetic force. Good control.
  • the magnetizing directions of the first magnet 4221 and the second magnet 4222 are perpendicular to each other, and the first magnet 4221 and the second magnet 4222 are alternately arranged along the width direction thereof.
  • the magnetization directions of the first magnet 4221 and the second magnet 4222 are perpendicular to each other, which can produce stronger strength on the side of the second magnetic portion 422 facing the second coil portion 622 (or the side facing away from the second coil portion 622).
  • the magnetic field can apply greater (smaller) magnetic force to the second coil part 622 under the same current or voltage. It can be understood that, in some cases, the size of the magnetic field needs to be reduced. Therefore, the magnetic force can also be reduced by the above settings.
  • the magnetization directions of the adjacent first magnets 4221 are opposite, and the magnetization directions of the adjacent second magnets 4222 in contrast.
  • the direction of magnetization is opposite, and the magnetic field distribution is changed so that the magnetic field of the second magnetic portion 422 facing the second coil portion 622 (or the side facing away from the second coil portion 622) is stronger, and under the same current or voltage , A larger (smaller) magnetic force can be applied to the second coil part 622.
  • the magnetization direction of the first magnet 4221 is perpendicular to the plane where the imaging unit 30 is located, and the magnetization direction of the second magnet 4222 is parallel to the plane where the imaging unit 30 is located.
  • stator group 40 and the second stator group 80 when the number of stator groups is two, that is, the first stator group 40 and the second stator group 80 are included.
  • the first magnetic parts 421 of the first stator group 40 and the first magnetic parts 821 of the second stator group 80 have the same number and are opposite in position.
  • the first stator group 40 and the second stator group 80 can simultaneously apply to the mover group 60 The magnetic force is stronger, and the change of the current or voltage of the mover group 60 can make the mover group 60 move more sensitively and quickly along the first straight line (refer to the first direction X).
  • the second magnetic parts 422 of the first stator group 40 and the second magnetic parts 822 of the second stator group 80 have the same number and corresponding positions.
  • the first stator group 40 and the second stator group 80 can apply magnetic force to the mover group 60 at the same time, and the magnetic force is stronger.
  • the mover group 60 can be made to follow the second straight line (reference The movement in the second direction Y) is more sensitive and rapid.
  • the rotation of the mover group 60 can also be made more sensitive and rapid.
  • the shake compensation device further includes a position detection unit, and the position detection unit is used to detect the displacement of the imaging unit 30.
  • the position detection unit 30 detects the displacement of the imaging unit 30 to obtain the compensated displacement, which is used to determine whether the compensation is successful.
  • the position detection unit includes a position sensor 711, and the position sensor 711 is used to detect the magnetic field of the magnetic member 42 to obtain the displacement of the mover group 60.
  • the displacement of the mover group 60 is related to the magnetic field and the current and voltage of the mover group 60, and the current and voltage are known, and the magnetic field can be measured to obtain the displacement of the mover group 60 according to the relevant calculation formula.
  • the method of obtaining the displacement of the mover group 60 by measuring the magnetic field has a simple structure and is easy to implement.
  • the position detection unit further includes a reference magnetic member 51, and the reference magnetic member 51 provides a reference magnetic field for the position sensor 711. Due to the limited internal space of the electronic device, in order to save space, the size of the magnetic element 42 is generally approximately the same as the coil of the mover assembly 60, and it is difficult to have a space to arrange the position of the position sensor 711 corresponding to the magnetic element 42. Therefore, the reference magnetic element 51 is provided, and the magnetic field distribution of the reference magnetic element 51 is approximately the same as the magnetic field distribution of the magnetic element 42. The position of the reference magnetic element 51 and the magnetic element 42 can be staggered to ensure the arrangement space of the magnetic element 42. Of course, the reference magnetic member 51 may not be provided for the position detection unit, and the change of the magnetic field generated by the stator group may be detected to obtain the displacement of the mover group 60.
  • one of the reference magnetic member 51 and the position sensor 711 is installed on the stator mounting plate 41, and the other is installed on the mover mounting plate 61, and the reference magnetic member 51 corresponds to the position of the position sensor 711.
  • the reference magnetic component 51 is installed on the stator mounting plate 41, please refer to FIG. 5, a reference magnetic component mounting groove 413 can be opened on the stator mounting plate 41, refer to the structure of the magnetic component mounting groove 413 and the magnetic component mounting groove 411/412 Similarly, and can be staggered, the reference magnetic member 51 is embedded in the reference magnetic member mounting slot 413 and fixed on the stator mounting plate 41.
  • the position sensor 711 is installed on the mover mounting plate 61, and a position sensor installation groove 603 can be opened on the mover installation plate 61.
  • the position sensor installation groove 603 can be similar to the magnetic component installation groove 411/412, and the position sensor 603 is embedded in the position sensor.
  • the groove 603 is fixed.
  • the magnetizing direction of the reference magnetic member 51 is parallel to the plane where the imaging unit 30 is located.
  • the arrangement of the reference magnetic element 51 is as similar as possible to the magnetic element 42.
  • the magnetization direction of the reference magnetic element 51 is parallel to the imaging unit 30, and the reference magnetic element 51 can be positioned in the direction of the moving sub-assembly.
  • a larger (or larger) reference magnetic field is generated on the side 60 (or the side facing away from the mover group 60), so that the displacement sensor 711 can receive a larger (or smaller) magnetic force, so as to detect the movement more accurately.
  • the displacement of the subgroup 60 is generated on the side 60 (or the side facing away from the mover group 60, so that the displacement sensor 711 can receive a larger (or smaller) magnetic force, so as to detect the movement more accurately.
  • the number of position detection units is three groups or more. As shown in FIG. 4, there are three sets of position detection units, that is, three position sensors 711 and reference magnetic members 51 corresponding to each other. The three sets of position detection units are staggered from each other and are arranged between the gaps of the plurality of magnetic members 42. The magnetic circuits between each group of position detection units and between each group of position detection units and the plurality of magnetic members 42 do not affect each other. It should be understood that the number of position detection units may be 3, 4, 5 groups, etc. The position detection units of three or more groups can detect the magnetic fields of multiple positions to obtain more accurate displacement data of the mover group 60.
  • each group of position detection units includes two or more Hall magnets, and the two or more Hall magnets are arranged in parallel and the polarities between adjacent Hall magnets are opposite.
  • the reference magnetic member 51 includes two Hall magnets 511 and 512.
  • the number of Hall magnets may be 3, 4, 5, and so on.
  • Two or more Hall magnets are arranged in parallel and the polarities between adjacent Hall magnets are opposite, which can generate a larger (or smaller) magnetic field toward the side of the displacement sensor 711, and the displacement sensor 711 is subjected to a larger (or smaller) magnetic field.
  • the magnetic force can detect the displacement of the mover group 60 more sensitively.
  • the optical device 100 further includes a power group 70, which is connected to the mover group 60 and used to provide power to the electromagnet 62.
  • the electromagnet 62 needs to be driven by electric power to move in the magnetic field of the stator group 40 and/or the stator group 80. Therefore, the arrangement of the electric power group provides driving power for the optical device 100 to ensure the performance of jitter compensation.
  • the power pack 70 includes a flexible circuit board 71, and the flexible circuit board 71 is provided on a side of the mover assembly 60 that faces away from the imaging unit 30.
  • the flexible circuit board 71 is connected to the control circuit on the mover mounting board 61 to provide power so that the electromagnet 62 can flow current.
  • the end of the flexible circuit board 71 away from the mover assembly 60 can be connected to a power source or a camera's main board.
  • the aforementioned displacement sensor 711 can also be connected to the flexible circuit board 71.
  • the flexible circuit board 71 supplies power to the displacement sensor 711.
  • the data detected by the displacement sensor 711 is transmitted through the flexible circuit board 71, for example, to the main board.
  • the main board performs the next step of analysis and processing.
  • the specific shape of the flexible circuit board 71 is not limited, and the whole can be bent to fit the optical device 100 as a whole, and the size of the jitter compensation device can also be further reduced.
  • the optical device 100 further includes a front frame 20, the front frame 20 is provided on a side of the imaging surface 321 of the imaging sensor 32, and the imaging unit 30, the front frame 20 and the mover assembly 60 are fixedly connected.
  • the front frame 20 serves as a mounting bracket to surround the imaging unit 30 to protect the imaging sensor 32.
  • the front frame 20 includes a front frame body portion 21 and a front frame mounting portion 22.
  • the front frame body portion 21 is provided with a through front frame window 201.
  • the front frame window 201 corresponds to the position of the imaging sensor 32.
  • the front frame mounting portion 22 is fixed to the front On the surface of the frame main body 21 facing the imaging unit 30, the number of the front frame mounting portions 22 is multiple, and the plurality of front frame mounting portions 22 can form an accommodating space, and the imaging unit 30 is accommodated in the accommodating space ,
  • the peripheral sidewalls of the imaging unit 30 are connected with a plurality of front frame mounting parts 22, so that the imaging unit 30 is fixed on the front frame 20.
  • the front frame mounting portion 22 is connected and fixed to the mover assembly 60, specifically the mover mounting plate 61, which can be fixed by means of screw connection, clamping connection, and the like. As shown in Figure 4, a screw 75 is provided on the side of the mover mounting plate 61 facing away from the imaging unit 30.
  • the mover mounting plate 61 is provided with a through hole 611.
  • the front frame mounting portion 22 corresponds to the through hole 611.
  • the screw 75 passes through the through hole 611 and is screwed to the front frame mounting portion 22 to realize the fixation of the front frame 20, the imaging unit 30 and the mover mounting plate 61.
  • the optical device 100 further includes an installation unit, which is fixedly connected to the stator group (refer to reference numerals 40 and/or 80), and the imaging unit 30 is provided between the installation unit and the stator group.
  • the mounting unit may be the aforementioned lens bayonet assembly 10, and the fixing method of the lens bayonet assembly 10 and the stator assembly can refer to the aforementioned description, which will not be repeated here.
  • the installation unit may also be an additional installation structure. The purpose of the installation unit is to make the stator group and the imaging unit 30 integrated.
  • the first stator group 40 and the second stator group 80 are fixedly connected, so that the relative positions of the two stator groups are fixed and the structure is stable, which can provide a good foundation for installing the mover group 60.
  • the fixing method of the two stator groups here can adopt any of the aforementioned fixing methods, and the specific fixing structure is not limited.
  • the first stator group 40 and the second stator group 80 are connected by a stator connecting piece 77, and the mover group 60 has a limited hole 601 ,
  • the stator connecting piece 77 passes through the limiting hole 601.
  • the peripheral sidewalls of the limiting hole 601 contact the stator connecting piece 77 to limit the displacement of the mover group 60 and avoid the overrun of the jitter compensation. Affect the image quality.
  • the limiting hole 601 is opened on the mover mounting plate 61 and is spaced from the electromagnet 62.
  • the shape of the limiting hole 601 is approximately a rectangle, and the shape and position of the rectangle correspond to the imaging sensor 32 so that the displacement range of the moving subgroup 60 is approximately the same around the imaging sensor 32.
  • the stator connecting member 77 is, for example, a connecting rod, the two ends of which are respectively connected to the first stator group 40 and the second stator group 80.
  • the length of the stator connecting member 77 satisfies that when the mover group 60 is arranged between the first stator group 40 and the second stator group 80, the mover group 60 is connected to the first stator group 40 and the second stator group 80.
  • connection mode of the stator connecting member 77 with the first stator group 40 and the second stator group 80 may be screw connection, clamping connection, bonding, and the like.
  • a buffer structure 78 is provided on the outer periphery of the stator connecting member 77, and the buffer structure 78 is used to buffer the impact of the stator connecting member 77 and the side wall of the limiting hole 601.
  • the buffer structure 78 is, for example, a silicone tube, and the buffer structure 78 is sleeved on the outer circumference of the stator connecting member 77.
  • the stator connecting piece 77 includes a cylindrical body 771, a first stop ring 772, a second stop ring 773, and a first protrusion 774 and second protrusion 775.
  • the first limit ring 772 and the second limit ring 773 are respectively connected to both ends of the cylindrical body 771, the first protrusion 774 is provided on the side of the second limit ring 773 facing away from the cylindrical body 771, and the second protrusion 775 It is arranged on the side of the first limiting ring 772 facing away from the cylindrical body 771.
  • the cylindrical body 771, the first limiting ring 772, the second limiting ring 773, the first protrusion 774, and the second protrusion 775 are all cylindrical and coaxially arranged.
  • the diameter of the first limiting ring 772 is larger than that of the second limiting ring.
  • the diameter of the retaining ring 773 is larger.
  • the buffer structure 78 has a hollow through hole 781.
  • the buffer structure 78 extends from the second retaining ring 773 into the cylindrical body 771 and covers the outer surface of the cylindrical body 771.
  • the first protrusion 774 and the second protrusion 775 are respectively used to connect and fix the second mover group 80 and the first mover group 771.
  • threaded holes 776 can be dug in the first protrusion 774 and the second protrusion 775, and a screw is used to cooperate with the threaded hole 776 to achieve fixation.
  • the first limit ring 772 is used to limit the displacement of the stator connection member 77 to the side of the first stator group 40
  • the second limit ring 773 is used to limit the displacement of the stator connection member 77 to the side of the second stator group 80.
  • the mover group 60 and the stator group 80 (taking the stator group 80 as an example, the stator group 40 is also possible) A supporting body 85 is provided therebetween, and the mover group 60 moves relative to the stator group 80 through the supporting body 85. Since the mover group 60 needs support on the one hand, and on the other hand, the mover group 60 and the stator group 80 have to move relatively, so a support body 85 is provided to achieve the above-mentioned purpose.
  • the supporting body 85 includes any one of balls, guide rails, air cushions, magnetic levitation cushions, and liquid levitation cushions.
  • the partially enlarged view C in FIG. 4 and the partially enlarged view F in FIG. 5 show an embodiment of the support body 85 using balls.
  • the stator mounting plate 81 is provided with a support body mounting groove 802, and the balls (support body 85) It is arranged in the supporting body installation groove 802, and the mover installation plate 61 can also be provided with a ball gasket installation groove 606, and the ball gasket 76 is accommodated in the ball gasket installation groove 606.
  • the shape of the peripheral side wall 615 of the ball washer mounting groove 606 is non-circular, such as quadrilateral, pentagon, ellipse, irregular arc, and the like.
  • the peripheral outer wall 761 of the ball washer 76 corresponds to the shape of the peripheral side wall 615 of the ball washer installation groove 606, and the ball washer 76 is inserted into the ball washer installation groove 606 to realize the installation of the ball washer 76, and the installation fit is a form fit.
  • the surface of the ball washer 76 facing the stator group 80 has a low coefficient of friction. The surface with low friction coefficient is used for rolling connection with the balls. When the mover group 60 and the stator group 80 move relative to each other, the balls are on the ball washer 76. Rolling, rolling can reduce friction resistance, and low friction resistance can improve the sensitivity of jitter compensation.
  • the number of the supporting bodies 85 is not less than three groups, and the supporting bodies 85 of not less than three groups are arranged in different positions.
  • the mover group 60 and A tensioning member 86 is connected between the stator groups 80, and the tensioning member 86 is used to tighten the mover group 60 and the stator group 80 so that the mover group 60 and the stator group 80 are always in contact with the support 85.
  • the tension member 86 is, for example, a spring, which tensions the stator assembly 80 and the mover assembly 60 through elastic force, keeps the stator assembly 80 and the mover assembly 60 always supported by the support body 85, and ensures that the mover assembly 60 and the stator assembly 80 are always supported by the support body 85.
  • the imaging unit 30 has a constant plane. Even if it shakes, it only moves within the plane of the imaging unit 30 (that is, the plane formed by the first direction X and the second direction Y). It does not move in the third direction Z, which reduces the difficulty of jitter compensation and further ensures that the mover group 60 and the stator group 80 will not separate.
  • the stator assembly 80 is provided with a through hole 801.
  • the stator assembly 80 is provided with a bracket 87 on one side of the stator assembly 80 facing away from the mover assembly 60.
  • One end of the tension member 86 is connected to the bracket 87, and the other end passes through the through hole 801 and the mover assembly 60. connection.
  • the tension member 86 includes a tension main body portion 861 and a first connection end 862 and a second connection end 863 connected to both ends of the tension main body portion 861.
  • the bracket 87 includes a bracket installation portion 871, a bracket body portion 872, a bracket transition portion 873, a bracket limit portion 874 and a bracket reinforcement portion 875.
  • the bracket installation portion 871 is provided with a bracket connection hole 876, the stator installation plate 81 is provided with a corresponding stator connection hole 803, and the bracket connection hole 876 of the bracket installation portion 871 corresponds to the stator connection hole 803 and can be fixed by screw connection.
  • a positioning slot 802 can be set on the stator mounting plate 81.
  • the position of the positioning slot 802 corresponds to the stator connecting hole 803.
  • the stator connecting hole 803 is provided in the positioning slot 802, and the shape of the positioning slot 802 is installed with the bracket.
  • the shape of the part 871 is corresponding, and the bracket installation part 871 is extended into the positioning slot 802 to make the bracket connection hole 876 correspond to the stator connection hole 803, and the installation operation can be performed quickly.
  • the bracket body portion 872 extends from the circumference of the bracket mounting portion 871, the bracket body portion 872, the bracket transition portion 873, and the bracket limiting portion 874 are sequentially connected, and the size of the bracket transition portion 873 is smaller than the bracket body portion 872 and the bracket limiting portion 874 , So that a groove is formed at the position of the bracket transition 873.
  • the bracket reinforcement portion 875 extends from the circumferential direction of the bracket installation portion 871 and is connected to the bracket body portion 872, the bracket transition portion 873 and the bracket limit portion 874 to strengthen the overall structural strength of the bracket 87.
  • the first connecting end 862 of the tension member 86 is ring-shaped and is sleeved at the position of the bracket transition portion 873, and the bracket limiting portion 874 is used to limit the displacement of the first connecting end 862 in the extension direction of the bracket main body 872.
  • the mover mounting plate 61 is also provided with a structure similar to the bracket 87 for connecting with the second connecting end 863 of the tension member 86. Specifically, please refer to the partially enlarged view A-1 in FIG. 4 and the partially enlarged view A-2 in FIG. 5, the mover mounting plate 61 is provided with a connector through hole 602, and the inner wall of the connector through hole 602 is provided with a connection
  • the connecting member 65 includes a connecting member main body portion 651, a connecting member transition portion 652, a connecting member limiting portion 653, and a connecting member reinforcing portion 654.
  • the connecting member main body 651 is connected to the inner wall of the connecting member through hole 602, and the connecting member main body 651, the connecting piece transition portion 652, and the connecting piece limiting portion 653 are connected in sequence, and the size of the connecting piece transition portion 652 is smaller than the connecting piece main body portion 651 and the connecting piece limiting portion 653, so that a groove is formed at the position of the connecting piece 652 .
  • the connecting piece reinforcement portion 654 is connected to the inner wall of the connecting piece through hole 602 and connected with the connecting piece main body portion 651, the connecting piece transition portion 652 and the connecting piece limiting portion 653 to strengthen the overall structural strength of the connecting piece 65.
  • the second connecting end 863 of the tensioning member 86 is ring-shaped and is sleeved at the position of the connecting member transition portion 652, and the connecting member limiting portion 653 is used to limit the displacement of the second connecting end 863 in the extending direction of the connecting member main body 651 .
  • the bracket reinforcement portion 875 and the connecting member reinforcement portion 654 are respectively arranged on the side of the tension main body portion 861 close to the tension member 86.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Devices (AREA)
  • Adjustment Of Camera Lenses (AREA)

Abstract

L'invention concerne un dispositif de compensation de tremblement, un dispositif optique (100) et une caméra (1000). Le dispositif de compensation de tremblement comprend un groupe stator (40, 80) et un groupe moteur (60). Le groupe stator (40, 80) est utilisé pour entraîner le groupe moteur (60) à se déplacer. Le groupe moteur (60) est relié de manière fixe à une unité d'imagerie (30). Le groupe stator (40, 80) et le groupe moteur (60) sont disposés sur le côté de l'unité d'imagerie (30) qui est opposé à une surface d'imagerie (321). La façon dont le groupe de stator (40, 80) entraîne le groupe moteur (60) à se déplacer peut entraîner l'unité d'imagerie (30) à se déplacer, et tant le groupe de stator (40, 80) que le groupe moteur (60) sont disposés sur le côté de l'unité d'imagerie (30) qui est opposé à une surface d'imagerie (321), c'est-à-dire qu'il n'est pas nécessaire d'entraîner l'unité d'imagerie (30) à se déplacer sur la surface latérale périphérique de l'unité d'imagerie (30), et la taille de la périphérie de l'unité d'imagerie (30) peut être réduite. Le dispositif de compensation de tremblement est adapté à la forme de l'unité d'imagerie (30) et est ainsi empilé sur celui-ci, et il favorise également la conception structurale compacte du dispositif optique (100) et de la caméra (1000), et il est de petite taille et facile à transporter et à utiliser.
PCT/CN2019/122377 2019-12-02 2019-12-02 Dispositif de compensation de tremblement, dispositif optique et caméra WO2021108949A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980095017.0A CN113678058A (zh) 2019-12-02 2019-12-02 抖动补偿装置、光学装置和相机
PCT/CN2019/122377 WO2021108949A1 (fr) 2019-12-02 2019-12-02 Dispositif de compensation de tremblement, dispositif optique et caméra

Applications Claiming Priority (1)

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PCT/CN2019/122377 WO2021108949A1 (fr) 2019-12-02 2019-12-02 Dispositif de compensation de tremblement, dispositif optique et caméra

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CN113589469A (zh) * 2021-08-06 2021-11-02 新思考电机有限公司 透镜驱动机构、驱动装置、摄像装置及电子设备
CN113965676A (zh) * 2021-10-08 2022-01-21 上海创米科技有限公司 摄像头装置
WO2024022133A1 (fr) * 2022-07-26 2024-02-01 华为技术有限公司 Module d'acquisition d'image, module de lentille et dispositif électronique

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US20090128637A1 (en) * 2006-07-25 2009-05-21 Takayoshi Noji Image blur correction device and imaging device furnished therewith
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WO2024022133A1 (fr) * 2022-07-26 2024-02-01 华为技术有限公司 Module d'acquisition d'image, module de lentille et dispositif électronique

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