CN213581541U - Lens driving device - Google Patents

Lens driving device Download PDF

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Publication number
CN213581541U
CN213581541U CN202021249489.3U CN202021249489U CN213581541U CN 213581541 U CN213581541 U CN 213581541U CN 202021249489 U CN202021249489 U CN 202021249489U CN 213581541 U CN213581541 U CN 213581541U
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CN
China
Prior art keywords
driving device
shell
lens
magnetic steel
coil
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Active
Application number
CN202021249489.3U
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Chinese (zh)
Inventor
史卫领
郭顺
王洪兴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AAC Optics Changzhou Co Ltd
Chengrui Optics Changzhou Co Ltd
Original Assignee
Chengrui Optics Changzhou Co Ltd
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Publication date
Application filed by Chengrui Optics Changzhou Co Ltd filed Critical Chengrui Optics Changzhou Co Ltd
Priority to CN202021249489.3U priority Critical patent/CN213581541U/en
Priority to PCT/CN2020/101496 priority patent/WO2022000548A1/en
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Publication of CN213581541U publication Critical patent/CN213581541U/en
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    • 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
    • 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
    • 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
    • G03B5/06—Swinging lens about normal to the optical axis
    • 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
    • G03B5/08—Swing backs

Abstract

The utility model provides a lens driving device, which comprises a lens cone, a first shell, a first driving device, a second shell and a second driving device, wherein the lens cone is used for installing a lens, the lens cone is arranged in the first shell, the first driving device is arranged between the lens cone and the first shell, and the first driving device drives the lens cone to move or rotate relative to the first shell; the first shell is arranged in the second shell; the second driving device is arranged between the first shell and the second shell and drives the first shell and the lens barrel to move or rotate relative to the second shell; one of the first driving device and the second driving device is used for realizing the movement or rotation of the lens barrel in the plane where the optical axis is located, and the other one is used for realizing the movement or rotation of the lens barrel in the plane perpendicular to the optical axis. The first driving device and the second driving device jointly act to achieve anti-shaking of the lens in all directions.

Description

Lens driving device
[ technical field ] A method for producing a semiconductor device
The utility model relates to an optics anti-shake field, in particular to camera lens drive arrangement.
[ background of the invention ]
The shake compensation of a lens driving device of an existing optical device generally only has shake compensation in the yaw and pitch directions, and does not have a shake compensation function in the rolling direction.
Therefore, it is necessary to provide a lens driving apparatus capable of preventing a shake in a rolling direction.
[ Utility model ] content
An object of the utility model is to provide a can realize anti-shake's camera lens drive arrangement in the direction of rolling.
The technical scheme of the utility model as follows:
a lens driving device, comprising:
a lens barrel for mounting a lens;
a first housing in which the lens barrel is mounted;
the first driving device is arranged between the lens cone and the first shell and drives the lens cone to move or rotate relative to the first shell;
a second housing, the first housing being mounted within the second housing;
the second driving device is arranged between the first shell and the second shell and drives the first shell and the lens barrel to move or rotate relative to the second shell;
one of the first driving device and the second driving device is used for realizing the movement or rotation of the lens barrel in the plane where the optical axis is located, and the other one is used for realizing the movement or rotation of the lens barrel in the plane perpendicular to the optical axis.
Further, the second driving device is used for realizing the movement or rotation of the lens cone in the plane where the optical axis is perpendicular to, the second driving device comprises a second magnetic steel component and a second coil component which are arranged oppositely, one of the second magnetic steel component and the second coil component is fixed on the first shell, the other one of the second magnetic steel component and the second coil component is fixed on the second shell, the second magnetic steel component comprises at least one magnetic steel, the second coil component comprises at least one coil opposite to the magnetic steel, and the magnetic steel in the second magnetic steel component and the coil in the second coil component are arranged oppositely and in a staggered mode.
Further, the number of coils contained in the second coil component is one or less than that of the magnetic steels contained in the second magnetic steel component.
Furthermore, the first driving device is used for realizing the movement or rotation of the lens barrel in the plane of the optical axis, the first driving device comprises a first magnetic steel component and a first coil component which are arranged oppositely, one of the first magnetic steel component and the first coil component is fixed on the first shell, and the other one of the first magnetic steel component and the first coil component is fixed on the lens barrel.
Further, the second magnetic steel component comprises two magnetic steels arranged at intervals, the second coil component comprises a coil, and the magnetizing directions of the two magnetic steels arranged at intervals are opposite and perpendicular to the first shell.
Further, the first shell comprises a first bottom plate, a first cover plate arranged opposite to the first bottom plate, and a first side plate which is connected with the first bottom plate and the first cover plate and extends along the optical axis direction, and a first light through hole penetrating through the first cover plate is formed in the first cover plate;
the second shell comprises a second bottom plate, a second cover plate and a second side plate, wherein the second cover plate is arranged opposite to the second bottom plate, the second side plate is connected with the second bottom plate and the second cover plate and extends along the optical axis direction, and a second light through hole penetrating through the second cover plate is formed in the second cover plate;
the second magnetic steel component is attached to the first side plate in parallel, and the second coil component is opposite to the second magnetic steel component and is attached to the second side plate in parallel;
the lens driving device further comprises a first fulcrum structure, and the first fulcrum structure is connected between the first base plate and the second base plate and used for supporting the first shell to move or rotate.
Further, the first fulcrum structure includes a first spherical convex portion, the first spherical convex portion is connected to the first bottom plate, a first rolling groove matched with the first spherical convex portion is formed in the second shell, the first spherical convex portion is contained in the first rolling groove, and the first spherical convex portion can move or rotate in the first rolling groove.
Further, the lens driving device further includes a first elastic structure connected between the first side plate and the second side plate, and the first elastic structure is configured to support the first housing.
Further, the lens driving device further includes a second fulcrum structure, and the second fulcrum structure is connected between the first base plate and the lens barrel and is used for supporting the second housing to move or rotate.
Further, the first fulcrum structure includes a second spherical convex portion, the second spherical convex portion is connected to the lens barrel, a second rolling groove matched with the second spherical convex portion is formed in the first bottom plate, the second spherical convex portion is contained in the second rolling groove, and the second spherical convex portion can move or rotate in the second rolling groove.
The beneficial effects of the utility model reside in that: according to the camera lens, the first driving device and the second driving device are arranged, the second driving device can drive the first shell to move or rotate relative to the second shell, the first driving device can drive the lens barrel to move or rotate relative to the first shell, the first driving device and the second driving device jointly act to achieve the effect that the lens has the shake compensation functions in the deflection, pitching and rolling directions, and the rolling is independent of the pitching and the deflection.
[ description of the drawings ]
Fig. 1 is a schematic structural diagram of a lens driving device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the lens driving apparatus of FIG. 1 with the second housing removed;
FIG. 3 is a schematic cross-sectional view taken along A-A of FIG. 1;
fig. 4 and 5 show two opposite directions of rotation of the first housing, respectively, by a top view of the lens driving apparatus with the second cover removed.
In the figure:
100. a lens driving device; 1. a lens barrel; 2. a first housing; 3. a second housing; 4. a second driving device; 41. a second magnetic steel component; 42. a second coil assembly; 411. magnetic steel; 421. a coil; 21. a first base plate; 22. a first side plate; 23. a first cover plate; 230. a first light passing hole; 31. a second base plate; 32. a second side plate; 33. a second cover plate; 330. a second light passing hole; 5. a first fulcrum structure; 51. a first connecting member; 52. a first spherical convex portion; 310. a first roll groove; 6. a first elastic structure; 61. a first connection portion; 62. a second connecting portion; 63. an elastic connecting strip; 7. a first driving device; 71. a first magnetic steel component; 72. a first coil assembly; 8. a second fulcrum structure; 81. a second connecting member; 82. a second spherical convex portion; 210. a second roll groove; 9. a second elastic structure.
[ detailed description ] embodiments
The present invention will be further described with reference to the accompanying drawings and embodiments.
Referring to fig. 1 to 5, a lens driving apparatus 100 includes:
a lens barrel 1, the lens barrel 1 being used for mounting a lens;
a first housing 2, the lens barrel 1 being mounted in the first housing 2;
a first driving device 7 disposed between the lens barrel 1 and the first housing 2, wherein the first driving device 7 drives the lens barrel 1 to move or rotate relative to the first housing 2;
a second housing 3, the first housing 2 being mounted in the second housing 3;
a second driving device 4 disposed between the first housing 2 and the second housing 3, wherein the second driving device 4 drives the first housing 2 and the lens barrel 1 to move or rotate relative to the second housing 3;
one of the first driving device 7 and the second driving device 4 is used for realizing the movement or rotation of the lens barrel 1 in the plane of the optical axis, and the other is used for realizing the movement or rotation of the lens barrel 1 in the plane perpendicular to the optical axis.
The second housing 3 is generally fixedly connected to the electronic device, the second driving device 4 can drive the first housing 2 to move or rotate relative to the second housing 3, the first driving device 7 can drive the lens barrel 1 to move or rotate relative to the first housing 2, the first driving device 7 and the second driving device 4 cooperate to realize that the lens has shake compensation functions in yaw, pitch and roll directions simultaneously, and the roll is independent of pitch and yaw.
In this embodiment, the second driving device 4 is used to realize the movement or rotation of the lens barrel 1 in the plane perpendicular to the optical axis, the second driving device 4 includes a second magnetic steel component 41 and a second coil component 42 which are oppositely disposed, the second magnetic steel component 41 is fixed to the first housing 2, the second coil component 42 is fixed to the second housing 3, of course, in other optional embodiments, the second magnetic steel component 41 is fixed to the second housing 3 and the second coil component 42 is fixed to the first housing 2, the second magnetic steel component 41 includes at least one magnetic steel 411, the second coil component 42 includes at least one coil 421, the number of the coils 421 included in the second coil component 42 is one or less than the number of the magnetic steels 411 included in the second magnetic steel component 41, and the magnetic steel 411 and the coil 421 are arranged in a staggered manner. As shown in fig. 2, the second magnetic steel assembly 41 includes two parallel magnetic steels 411, and the second coil assembly 42 includes a coil 421, where the coil 421 is configured to face a gap position of the two parallel magnetic steels 411. Further, the magnetizing directions of the two parallel magnetic steels 411 are opposite and perpendicular to the first housing 2, the magnetizing directions of the magnetic steels 411 can be shown in fig. 4 and 5, and the two parallel magnetic steels 411 generate a magnetic field at the coil 421, which is substantially perpendicular to the coil 421.
When the coil 421 is energized, according to the left-hand rule, the second coil component 42 interacts with the second magnetic steel component 41 to generate a tangential torque force parallel to the plane of the second magnetic steel component 41, so as to drive the first casing 2 to move or rotate in the plane (XY plane) perpendicular to the optical axis (Z axis), or to drive the first casing 2 to roll around the optical axis (Z axis). Referring to fig. 3, 4 and 5, fig. 4 and 5 respectively illustrate the rotation of the first housing 2 in two opposite directions.
In this embodiment, the first driving device 7 is configured to realize movement or rotation of the lens barrel 1 in a plane where an optical axis is located, the first driving device 7 includes a first magnetic steel component 71 and a first coil component 72, which are disposed opposite to each other, the first magnetic steel component 71 is fixed to the lens barrel 1, and the first coil component 72 is fixed to the first housing 2, and of course, in other optional embodiments, the first magnetic steel component 71 may also be fixed to the first housing 2 and the first coil component 72 is fixed to the lens barrel 1.
The first coil assembly 72 is energized, and the first coil assembly 72 interacts with the first magnetic steel assembly 71, so as to drive the lens barrel 1 to swing or pitch relative to the first housing 2. Specifically, the first magnetic steel assembly 71 and the first coil assembly 72 are provided as a pair of magnetic steel and a coil which are oppositely arranged.
Preferably, the first casing 2 includes a first bottom plate 21, a first cover plate 23 disposed opposite to the first bottom plate 21, and a first side plate 22 connecting the first bottom plate 21 and the first cover plate 23 and extending along the optical axis direction, and the first cover plate 23 is provided with a first light passing hole 230 penetrating through the first cover plate 23;
the second housing 3 includes a second bottom plate 31, a second cover plate 33 disposed opposite to the second bottom plate 31, and a second side plate 32 connecting the second bottom plate 31 and the second cover plate 33 and extending along the optical axis direction, and the second cover plate 33 is provided with a second light passing hole 330 penetrating through the second cover plate 33;
the second magnetic steel component 41 is attached to the first side plate 22 in parallel, and the second coil component 42 is opposite to the second magnetic steel component 41 and is attached to the second side plate 32 in parallel;
the lens driving apparatus 100 further includes a first pivot structure 5, and the first pivot structure 5 is connected between the first base plate 21 and the second base plate 31, and is configured to support the first housing 2 to move or rotate.
Preferably, the first fulcrum structure 5 includes a first spherical protrusion 52, the first spherical protrusion 52 is connected to the first base plate 21, the second base plate 31 is provided with a first rolling groove 310 engaged with the first spherical protrusion 52, and the first spherical protrusion 52 is movable or rotatable in the first rolling groove 310. The first rolling groove 310 may be a strip-shaped groove, so that the first housing 2 can move along the first rolling groove 310 under the driving of the second driving device 4, and the first rolling groove 310 may also be a semi-spherical groove, so that the first housing 2 can rotate relative to the second housing 3 under the driving of the second driving device 4. The first spherical protrusion 52 and the first rolling groove 310 cooperate to make the first housing 2 rotate more smoothly.
Preferably, the first fulcrum structure 5 further includes a first connecting member 51 connected between the first spherical protrusion 52 and the first base plate 21.
Preferably, the lens driving device 100 further includes a first elastic structure 6, the first elastic structure 6 is connected between the first side plate 22 and the second side plate 32, and the first elastic structure 6 is used for supporting the first housing 2.
Preferably, the first elastic structure 6 includes a first connecting portion 61 connected to the first side plate 22, a second connecting portion 62 connected to the second side plate 32, and an elastic connecting strip 63 obliquely connected between the first connecting portion 61 and the second connecting portion 62. The elastic connection bar 63 is connected between the first connection portion 61 and the second connection portion 62 at an angle, functions to connect the first side plate 22 and the second side plate 32, and provides a restoring force for the movement of the first casing 2.
Preferably, the first driving device 7 is connected between the first side plate 22 and the lens barrel 1.
Preferably, the lens driving device 100 further includes a second fulcrum structure 8 connected between the first bottom plate 21 and the lens barrel 1, and the second fulcrum structure 8 is configured to support the lens barrel 1 to move or rotate relative to the first housing 2.
Preferably, the second fulcrum structure 8 includes a second spherical protrusion 82, the second spherical protrusion 82 is connected to a side of the second connecting member 81 away from the lens barrel 1, and a second rolling groove 210 engaged with the second spherical protrusion 82 is formed on the first bottom plate 21. The second rolling groove 210 may be a strip-shaped groove, so that the lens barrel 1 can move along the second rolling groove 210 under the driving of the first driving device 7, and the second rolling groove 210 may also be a semi-spherical groove, so that the lens barrel 1 can rotate relative to the second housing 3 under the driving of the first driving device 7. The second spherical convex part 82 and the second rolling groove 210 are matched, so that the rotation of the camera is smoother.
Preferably, the second fulcrum structure 8 further includes a second connecting member 81 connected between the second spherical protrusion 82 and the lens barrel 1.
The lens driving device 100 further includes a second elastic structure 9 disposed between the lens barrel 1 and the first side plate 22, the second elastic structure 9 is used for supporting the lens barrel 1 relative to the first housing 2, and the second elastic structure 9 is similar to the first elastic structure 6.
Preferably, the first housing 2 and the second housing 3 are provided as a hollow quadrangular prism, the first side plate 22 is enclosed as four sides of the first housing 2, and the second side plate 32 is enclosed as four sides of the second housing 3; the second driving devices 4 are arranged in four and equally spaced positions and are respectively arranged between the four side surfaces of the first casing 2 and the four side surfaces of the second casing 3, and the second driving devices 4 are arranged in the middle. The four groups of second driving devices 4 cooperate with each other to provide a force for driving the first housing 2 to move, so that the first housing 2 is subjected to forces in various directions, and the movement is more stable.
The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims (10)

1. A lens driving device, characterized by comprising:
a lens barrel for mounting a lens;
a first housing in which the lens barrel is mounted;
the first driving device is arranged between the lens cone and the first shell and drives the lens cone to move or rotate relative to the first shell;
a second housing, the first housing being mounted within the second housing;
the second driving device is arranged between the first shell and the second shell and drives the first shell and the lens barrel to move or rotate relative to the second shell;
one of the first driving device and the second driving device is used for realizing the movement or rotation of the lens barrel in the plane where the optical axis is located, and the other one is used for realizing the movement or rotation of the lens barrel in the plane perpendicular to the optical axis.
2. The lens driving device according to claim 1, wherein: the second driving device is used for realizing the movement or rotation of the lens cone in a plane where the optical axis is perpendicular to, the second driving device comprises a second magnetic steel component and a second coil component which are arranged oppositely, one of the second magnetic steel component and the second coil component is fixed to the first shell, the other one of the second magnetic steel component and the second coil component is fixed to the second shell, the second magnetic steel component comprises at least one magnetic steel, the second coil component comprises at least one coil opposite to the magnetic steel, and the magnetic steel in the second magnetic steel component and the coil in the second coil component are arranged in a staggered mode.
3. The lens driving device according to claim 2, wherein: the number of coils contained in the second coil component is one or less than that of the magnetic steels contained in the second magnetic steel component.
4. The lens driving device according to claim 1, wherein: the first driving device is used for realizing the movement or rotation of the lens cone in a plane where an optical axis is located, the first driving device comprises a first magnetic steel component and a first coil component which are arranged oppositely, one of the first magnetic steel component and the first coil component is fixed on the first shell, and the other one of the first magnetic steel component and the first coil component is fixed on the lens cone.
5. A lens driving apparatus according to claim 3, wherein: the second magnetic steel component comprises two magnetic steels arranged at intervals, the second coil component comprises a coil, and the magnetizing directions of the two magnetic steels arranged at intervals are opposite and perpendicular to that of the first shell.
6. The lens driving device according to claim 2, wherein: the first shell comprises a first bottom plate, a first cover plate and a first side plate, wherein the first cover plate is arranged opposite to the first bottom plate, the first side plate is connected with the first bottom plate and the first cover plate and extends along the direction of an optical axis, and a first light through hole penetrating through the first cover plate is formed in the first cover plate;
the second shell comprises a second bottom plate, a second cover plate and a second side plate, wherein the second cover plate is arranged opposite to the second bottom plate, the second side plate is connected with the second bottom plate and the second cover plate and extends along the optical axis direction, and a second light through hole penetrating through the second cover plate is formed in the second cover plate;
the second magnetic steel component is attached to the first side plate in parallel, and the second coil component is opposite to the second magnetic steel component and is attached to the second side plate in parallel;
the lens driving device further comprises a first fulcrum structure, and the first fulcrum structure is connected between the first base plate and the second base plate and used for supporting the first shell to move or rotate.
7. The lens driving device according to claim 6, wherein: the first fulcrum structure comprises a first spherical convex part, the first spherical convex part is connected to the first bottom plate, a first rolling groove matched with the first spherical convex part is formed in the second shell, the first spherical convex part is contained in the first rolling groove, and the first spherical convex part can move or rotate in the first rolling groove.
8. The lens driving device according to claim 6, wherein: the lens driving device further comprises a second fulcrum structure, and the second fulcrum structure is connected between the first bottom plate and the lens barrel and used for supporting the second shell to move or rotate.
9. The lens driving device according to claim 8, wherein: the second fulcrum structure comprises a second spherical convex part, the second spherical convex part is connected to the lens barrel, a second rolling groove matched with the second spherical convex part is formed in the first bottom plate, the second spherical convex part is contained in the second rolling groove, and the second spherical convex part can move or rotate in the second rolling groove.
10. The lens driving device according to claim 6, wherein: the lens driving device further comprises a first elastic structure connected between the first side plate and the second side plate, and the first elastic structure is used for supporting the first shell.
CN202021249489.3U 2020-06-30 2020-06-30 Lens driving device Active CN213581541U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202021249489.3U CN213581541U (en) 2020-06-30 2020-06-30 Lens driving device
PCT/CN2020/101496 WO2022000548A1 (en) 2020-06-30 2020-07-10 Lens driving apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021249489.3U CN213581541U (en) 2020-06-30 2020-06-30 Lens driving device

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CN213581541U true CN213581541U (en) 2021-06-29

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WO (1) WO2022000548A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5121303B2 (en) * 2007-05-22 2013-01-16 キヤノン株式会社 Image blur correction apparatus, imaging apparatus, and optical apparatus
JP6460809B2 (en) * 2015-01-26 2019-01-30 日本電産サンキョー株式会社 Optical unit with shake correction function
JP7222719B2 (en) * 2018-03-26 2023-02-15 日本電産サンキョー株式会社 Optical unit with anti-shake function
CN111093020B (en) * 2019-12-31 2022-03-25 联想(北京)有限公司 Information processing method, camera module and electronic equipment

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