WO2023063205A1 - Barillet de lentille et dispositif d'imagerie - Google Patents

Barillet de lentille et dispositif d'imagerie Download PDF

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Publication number
WO2023063205A1
WO2023063205A1 PCT/JP2022/037415 JP2022037415W WO2023063205A1 WO 2023063205 A1 WO2023063205 A1 WO 2023063205A1 JP 2022037415 W JP2022037415 W JP 2022037415W WO 2023063205 A1 WO2023063205 A1 WO 2023063205A1
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WO
WIPO (PCT)
Prior art keywords
magnet
optical axis
cylinder
lens barrel
tube
Prior art date
Application number
PCT/JP2022/037415
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English (en)
Japanese (ja)
Inventor
坂本祐輔
堺崇弘
Original Assignee
株式会社ニコン
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 株式会社ニコン filed Critical 株式会社ニコン
Priority to JP2023554462A priority Critical patent/JPWO2023063205A1/ja
Publication of WO2023063205A1 publication Critical patent/WO2023063205A1/fr

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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
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification

Definitions

  • a lens barrel employing a voice coil motor has been proposed as a lens driving device (for example, Patent Document 1).
  • the members driven by the voice coil motor may collide with other members.
  • the lens barrel includes a first barrel that holds a lens and is movable in the optical axis direction, a second barrel that is different from the first barrel, and at least one second barrel provided in the first barrel. 1 magnet and at least one second magnet provided in the second tube, and a repulsive force is generated between the first magnet and the second magnet.
  • an imaging device includes the lens barrel.
  • FIG. 1 is a diagram showing a camera including a lens barrel and a camera body according to the first embodiment.
  • FIG. 2 is a cross-sectional view of the focus unit according to the first embodiment.
  • 3(a) is a perspective view showing the configuration of the voice coil motor
  • FIG. 3(b) is a view of the voice coil motor viewed from the direction of arrow AR11 in FIG. 3(a).
  • 4(a) and 4(b) are perspective views of the first cylinder.
  • FIG. 5 is a perspective view of the second cylinder.
  • FIG. 6 is a plan view of the focus unit according to the first embodiment viewed from the object side.
  • FIG. 7 is a cross-sectional view of a focus unit according to the second embodiment.
  • FIG. 8 is a cross-sectional view of a focus unit according to the third embodiment.
  • the direction parallel to the optical axis OA of the imaging optical system may be referred to as the "front-back direction” unless otherwise specified.
  • the subject side is referred to as the "object side”
  • the side opposite to the subject in the direction of the optical axis OA (camera body side) is referred to as the "image side”.
  • FIG. 1 is a diagram showing a camera 1 including a lens barrel 100 and a camera body 101 according to the first embodiment.
  • the lens barrel 100 is detachable from the camera body 101, but the lens barrel 100 and the camera body 101 may be integrated.
  • the camera body 101 includes an image sensor 111, a control unit 112, and the like inside.
  • the imaging element 111 is composed of, for example, a photoelectric conversion element such as a CCD (Charge Coupled Device), and converts a subject image formed by an imaging optical system (lens barrel 100 attached to the camera body 101) into an electrical signal. do.
  • CCD Charge Coupled Device
  • the control unit 112 includes a CPU (Central Processing Unit) and the like, and centrally controls the overall operation of the camera 1 related to shooting, including the focusing drive of the camera body 101 and the attached lens barrel 100 .
  • CPU Central Processing Unit
  • the lens barrel 100 includes a fixed barrel 115.
  • the fixed barrel 115 is made up of a plurality of parts, but it may be made up of a single part.
  • a lens mount LM is fixed to the fixed barrel 115 so that the lens barrel 100 can be attached to and detached from the camera body 101 .
  • the lens barrel 100 has a plurality of lens groups L1 to L9 sequentially arranged along a common optical axis OA.
  • the lens group L4 is held by the first cylinder 10
  • the lens group L6 is held by the lens holding frame F6
  • the lens group L8 is held by the lens holding frame F8.
  • Other lens groups are held by a fixed barrel 115 .
  • Each of the lens groups L1 to L9 may be composed of one lens, or may be composed of a plurality of lenses.
  • the first cylinder 10 may be a lens holding frame.
  • the lens group L4 is a focus lens and is provided in the focus unit 102.
  • FIG. 2 is a cross-sectional view of the focus unit 102. As shown in FIG.
  • the focus unit 102 includes a first barrel 10 and a second barrel 20 arranged on the outer peripheral side of the first barrel 10 .
  • the first cylinder 10 is composed of one part, but may be composed of a plurality of parts.
  • the second cylinder 20 is fixed to the fixed cylinder 115 with screws.
  • the second cylinder 20 is composed of a plurality of parts, but may be composed of a single part.
  • the lens group L4 performs focus adjustment by moving in the optical axis OA direction.
  • the lens group L4 is driven in the optical axis OA direction (back and forth direction) by a voice coil motor 50 provided in the focus unit 102.
  • FIG. 1 A voice coil motor 50 provided in the focus unit 102.
  • FIG. 3(a) is a perspective view showing the configuration of the voice coil motor 50
  • FIG. 3(b) is a view of the voice coil motor 50 viewed from the direction of arrow AR11 in FIG. 3(a).
  • the voice coil motor 50 has a first side yoke 51a and a second side yoke 51b having length in the optical axis direction, and a side yoke 51a having a length in the optical axis direction and between the first side yoke 51a and the second side yoke 51b. and a center yoke 52 arranged in the .
  • the voice coil motor 50 includes an upper yoke 56a connecting one ends of the first side yoke 51a, the second side yoke 51b, and the center yoke 52 in the optical axis direction, the first side yoke 51a, the second side yoke 51b, and a lower yoke 56b connecting the other end of the center yoke 52 in the optical axis direction. Thereby, a closed magnetic circuit is formed.
  • a first magnet 53a is arranged on the side surface of the first side yoke 51a on the center yoke 52 side, and a second magnet 53b is arranged on the side surface of the second side yoke 51b on the center yoke 52 side.
  • the first magnet 53a is arranged, for example, so that the center yoke 52 side is the north pole, and the second magnet 53b is also arranged so that the center yoke 52 side is the north pole.
  • magnetic flux enters the center yoke 52 from the N poles of the first magnet 53a and the second magnet 53b, passes through the upper yoke 56a and the lower yoke 56b, the first side yoke 51a and the second side yoke 51b, and the first magnet Magnetic paths returning to the S poles of 53a and the second magnet 53b are formed.
  • the voice coil motor 50 also includes a coil 55 that penetrates the center yoke 52 .
  • a drive signal (current) is input to the coil 55 from a driver (not shown) provided in the lens barrel 100 .
  • a current flows through the coil 55
  • the coil 55 moves in the optical axis direction due to the magnetic forces of the first magnet 53a and the second magnet 53b. More specifically, the coil 55 moves in the optical axis direction due to the electromagnetic interaction between the current-carrying coil 55 and the first magnet 53a and the second magnet 53b.
  • the direction of the current flowing through the coil 55 By changing the direction of the current flowing through the coil 55, the moving direction of the coil 55 can be switched between the subject side and the camera body 101 side. Further, by changing the value of the current flowing through the coil 55, the driving force and moving speed of the coil 55 can be changed.
  • FIG. 4(a) and 4(b) are perspective views of the first cylinder 10, and FIG. 5 is a perspective view of the second cylinder 20.
  • FIG. FIG. 6 is a plan view of the focus unit 102 according to the first embodiment as seen from the object side. 6, illustration of a member that is attached to the second tube 20 and holds the cushioning material 40 is omitted, and the cushioning material 40 is illustrated.
  • the first cylinder 10 is connected to the coil 55 of the voice coil motor 50. As shown in FIG. Accordingly, when the coil 55 is linearly moved in the optical axis OA direction, the first barrel 10 is linearly driven in the optical axis OA direction, and the position of the lens group L4 in the optical axis OA direction is changed. As shown in FIG. 4A, the first cylinder 10 is attached with a position detection board 113 including an optical encoder, a magnetic encoder, and the like. The position detection board 113 detects the position of the lens group L4 in the optical axis direction under the control of the control unit 112 of the camera body 101 .
  • a driver (not shown) generates a drive signal for the coil 55 based on the position of the lens group L4 detected by the position detection board 113 and the target position information of the lens group L4 input from the control unit 112 of the camera body 101. is generated and output to the coil 55 via the flexible printed circuit board (FPC) 114 .
  • FPC flexible printed circuit board
  • the focus unit 102 includes a plurality (two) of voice coil motors 50 in this embodiment.
  • the two voice coil motors 50 are positioned to face each other with the optical axis OA interposed therebetween on a plane perpendicular to the optical axis OA so that the driving force can be maximally transmitted in the optical axis OA direction (front-rear direction).
  • the plurality of voice coil motors 50 may be provided at other positions.
  • the number of voice coil motors 50 may be one, or three or more.
  • a guide bar 33, a guide bar fixing member 35, a sub-guide bar 34, and a sub-guide bar fixing member 36 are arranged in the second tube 20.
  • the guide bar 33 and the sub-guide bar 34 guide the first cylinder 10 driven by the voice coil motor 50 in the direction of the optical axis OA.
  • the guide bar 33 and the sub-guide bar 34 regulate the moving direction of the first barrel 10 in the direction of the optical axis OA
  • the guide bar 33 and the sub-guide bar 34 form a plane perpendicular to the optical axis OA. , it is desirable to install them at positions facing each other with the optical axis OA interposed therebetween.
  • the guide bar 33 and the sub-guide bar 34 may be provided at other positions.
  • the sub-guide bar 34 may be omitted.
  • a plurality of sub-guide bars 34 may be provided.
  • the control unit in the camera body 101 112 performs control such as focus driving of the focus unit 102 via the voice coil motor 50 .
  • the image sensor 111 converts the subject image light formed by the lens barrel 100 into an electrical signal, and the image data is recorded in a memory (not shown) provided in the camera body 101 (that is, photographed).
  • the drive signal for the voice coil motor 50 is OFF, that is, when no current is supplied to the voice coil motor 50, the coil 55 of the voice coil motor 50 does not have the holding force to keep its position. Therefore, when no current is supplied to the voice coil motor 50, the first tube 10 connected to the coil 55 is freely movable along the optical axis OA direction. Therefore, when the object side of the lens barrel 100 is tilted toward the ground or the sky, the first barrel 10 may move due to the weight of the lens group L4 or the like and collide with the second barrel 20, generating a collision sound. be. In addition, collision between the first tube 10 and the second tube 20 may damage the first tube 10 and the second tube 20 or cause wear of each member.
  • the cushioning material 40 is attached to the second barrel 20 .
  • the cushioning material 40 is provided at a position where the first tube 10 and the second tube 20 are in contact with each other in the optical axis OA direction.
  • the cushioning material 40 is provided in the second tube 20, but the cushioning material 40 may be provided in the first tube 10, or may be provided in both the first tube 10 and the second tube 20. may be provided.
  • the lens barrel 100 further includes: , first magnets 11a and 11b (see FIG. 2) and second magnets 21a and 21b (see FIG. 2).
  • first magnets 11a and 11b are referred to as the first magnets 11
  • second magnets 21a and 21b are referred to as the second magnets 21 when there is no particular need to distinguish them.
  • the first magnets 11a and 11b have, for example, a rectangular parallelepiped shape or a cubic shape. As shown in FIG. 2, the first magnet 11a is provided at the end of the first tube 10 on the image side, and the first magnet 11b is provided at the end of the first tube 10 on the object side. Also, the second magnets 21a and 21b have, for example, a rectangular parallelepiped shape or a cubic shape. As shown in FIG. 2, the second magnet 21a is provided at the image-side end of the second tube 20 at a position facing the first magnet 11a in the optical axis OA direction. The second magnet 21b is provided at the object-side end of the second tube 20 at a position facing the first magnet 11b in the optical axis OA direction.
  • the first magnet 11a and the second magnet 21a are attached to the first tube 10 and the second tube 20, respectively, so that a repulsive force is generated between the first magnet 11a and the second magnet 21a.
  • the first magnet 11b and the second magnet 21b are attached to the first tube 10 and the second tube 20, respectively, so that a repelling force is generated between the first magnet 11b and the second magnet 21b.
  • the first magnet 11a and the second magnet 21a are arranged so that the surfaces facing each other in the optical axis OA direction have the same polarity
  • the first magnet 11b and the second magnet 21b are arranged so that the surfaces facing each other in the optical axis OA direction arranged so that they have the same polarity.
  • the second magnet 21a is arranged so that the S pole is on the side of the first magnet 11a.
  • the first magnet 11b is arranged so that the S pole is on the side of the second magnet 21b
  • the second magnet 21b is arranged so that the S pole is on the side of the first magnet 11b.
  • the lens barrel 100 when the lens barrel 100 is tilted upward or downward while no current is supplied to the voice coil motor 50, the first barrel 10 moves toward the second barrel 20, but the first magnet 11a and the second magnet 21a, or the repulsive force between the first magnet 11b and the second magnet 21b, the speed at which the first cylinder 10 collides with the second cylinder 20 is reduced. can be done. As a result, compared with the case where only the cushioning material 40 is provided, it is possible to further suppress the generation of impact noise and the breakage and wear of members.
  • the coil 55 is short-circuited in a state in which no current is supplied to the voice coil motor 50, and the movement of the first cylinder 10 is reduced.
  • a method of reducing speed (short braking) is conceivable.
  • the short-circuited coil 55 moves within the magnetic field of the first magnet 53a and the second magnet 53b, current flows through the coil 55 and the coil 55 generates a magnetic field.
  • a force is generated in the direction opposite to the moving direction of the coil 55, and the moving speed of the first cylinder 10 connected to the coil 55 is reduced.
  • the short brake although the terminal velocity of the first cylinder 10 can be reduced, the collision between the first cylinder 10 and the second cylinder 20 cannot be prevented.
  • the present embodiment by appropriately setting the repulsive force between the first magnet 11 and the second magnet 21, the collision of the first tube 10 with the second tube 20 can be prevented. Therefore, it is possible to prevent the generation of impact noise and damage to members.
  • the distance D1 between the image-side end of the first tube 10 and the object-side surface of the cushioning material 40 is
  • the first magnet 11a and the second magnet 21a are arranged so as to be smaller than the distance D2 between (D1 ⁇ D2).
  • the end portion of the first cylinder 10 contacts the cushioning material 40 before the first magnet 11a and the second magnet 21b contact each other. can be suppressed, and damage to the first magnet 11a and the second magnet 21b can be suppressed.
  • the first magnet 11 and the second magnet 21b are separated from each other.
  • the magnet 21 is desirably arranged so as not to come into direct contact with it.
  • the first magnet 11a is arranged in a magnet holding frame 12 formed on the outer peripheral surface of the first tube 10, or as shown in FIG.
  • the first magnet 11a and the second magnet 21a are brought into direct contact by providing a protrusion 22 projecting inward from the inner peripheral surface of the second cylinder 20 between the magnet 11a and the second magnet 21a. It can be configured not to.
  • the repulsive force between the first magnet 11 and the second magnet 21 is too large, when the end of the first tube 10 approaches the second tube 20 , the repulsive force causes the voice coil motor 50 to move toward the second tube 20 . There is a possibility that the driving of the single cylinder 10 will be hindered. Therefore, the size of the first magnet 11 and the second magnet 21 , the type of the magnet, and the installation position of the magnet are such that the repulsive force between the first magnet 11 and the second magnet 21 drives the first cylinder 10 by the voice coil motor 50 . designed so as not to interfere with
  • the first magnet 11 and the second magnet 21 In order to maximize the mutual repulsive force in the direction of the optical axis OA, the first magnet 11 and the second magnet 21 having repulsive force are preferably arranged along a straight line parallel to the optical axis OA. .
  • the center of the first magnet 11a and the center of the second magnet 21a are arranged on the same straight line parallel to the optical axis OA. are arranged on the same straight line parallel to the optical axis OA.
  • the arrangement of the first magnet 11 and the second magnet 21 may be arranged in a manner other than the above in consideration of the arrangement balance with other members.
  • first magnet 11 of the first tube 10 and the second magnet 21 of the second tube 20 are desirably arranged at positions where their magnetic forces do not affect the driving of the voice coil motor 50 .
  • first magnet 11 or the second magnet 21 is arranged in the hatched region R1
  • the distance between the coil 55 and the first magnet 11 or between the coil 55 and the second magnet 21 would be Since there is no yoke (first side yoke 51a, second side yoke 51b, etc.) in the magnet, the magnetic force of the first magnet 11 or the second magnet 21 may affect the driving of the voice coil motor 50. Therefore, it is preferable to avoid arranging the first magnet 11 and the second magnet 21 in the region R1.
  • the voice coil motor 50 having the structure shown in FIGS.
  • the first magnet 11 and the second magnet 21 are arranged between the first magnet 11 and the coil 55 and between the second magnet 21 and the coil 55, It is desirable that one of the first side yoke 51a and the second side yoke 51b be positioned.
  • the lens barrel 100 includes the first barrel 10 that holds the lens group L4 and is movable in the optical axis OA direction, and the first barrel 10 that is movable in the optical axis OA direction.
  • a voice coil motor 50 to be driven a second tube 20 arranged outside the first tube 10, first magnets 11a and 11b provided in the first tube 10, and a second magnet 21a provided in the second tube 20. and 21b, and a repulsive force is generated between the first magnets 11a and 11b and the second magnets 21a and 21b.
  • the speed at which the first cylinder 10 collides with the second cylinder 20 is reduced. can be done. This reduces the impact when the first tube 10 collides with the second tube 20, reduces the collision noise, and prevents the first tube 10 and the second tube 20 from being damaged. Furthermore, by appropriately setting the repulsive force, it is possible to prevent the first cylinder 10 from colliding with the second cylinder 20 .
  • the second tube 20 includes a cushioning material 40 at a position in contact with the first tube 10 in the optical axis OA direction.
  • the first magnets 11a and 11b and the second magnets 21a and 21b are arranged along the optical axis OA. Thereby, the repulsive force between the first magnet 11a and the second magnet 21a and the repulsive force between the first magnet 11b and the second magnet 21b can be maximized in the optical axis OA direction.
  • the distance in the optical axis OA direction between the end portion of the first cylinder 10 and the cushioning material 40 is less than distance.
  • the voice coil motor 50 has a coil 55, a first magnet 53a and a second magnet 53b, a first side yoke 51a and a second side yoke 51b, and is perpendicular to the optical axis OA.
  • the first side yoke 51a and the second side yoke 51b are positioned between the first magnets 11a and 11b and the coil 55 in the plane where the two sides are aligned. As a result, the influence of the first magnets 11a and 11b on the driving of the voice coil motor 50 can be reduced.
  • FIG. 7 is a cross-sectional view of a focus unit 102A according to the second embodiment.
  • the first magnet 11b is not provided, and the first magnet 11a is provided at the end of the first tube 10 on the image side.
  • the second magnet 21a is provided at the image-side end of the second tube 20 as in the first embodiment, but the second magnet 21b is provided at the center of the second tube 20. It is provided in the holding portion 23 .
  • the first magnet 11a and the second magnet 21a are arranged such that a repulsive force is generated between the first magnet 11a and the second magnet 21a and a repulsive force is generated between the first magnet 11a and the second magnet 21b.
  • Two magnets 21a and a second magnet 21b are arranged. Specifically, for example, when the second magnet 21a is provided so that the N pole is on the side of the first magnet 11a, the first magnet 11a is arranged so that the N pole is on the side of the second magnet 21a. In this case, since the second magnet 21b side of the first magnet 11a becomes the S pole, the second magnet 21b is arranged so that the first magnet 11a side becomes the S pole.
  • the repulsive force between the first magnet 11a and the second magnet 21a or the repulsive force between the first magnet 11a and the second magnet 21b causes the first cylinder 10 to move.
  • the first magnet 11b may be provided at the object-side end of the first tube 10 without providing the first magnet 11a.
  • the second magnet 21b is provided at the object-side end of the second tube 20 as in the first embodiment, and the second magnet 21a is provided at the magnet holding portion provided at the center of the second tube 20. 23.
  • FIG. 8 is a cross-sectional view of a focus unit 102B according to the third embodiment.
  • a first magnet 11c is provided in the central portion of the first cylinder 10 in the direction of the optical axis OA.
  • the second magnet 21a is provided in a magnet holding portion 23a provided closer to the image side than the center of the second tube 20 in the optical axis OA direction, and the second magnet 21b is positioned closer to the subject than the center of the second tube 20. It is provided in the magnet holding portion 23b provided on the side.
  • the first magnet 11c and the second magnet 21c are arranged such that a repulsive force is generated between the first magnet 11c and the second magnet 21a, and a repulsive force is generated between the first magnet 11c and the second magnet 21b.
  • Two magnets 21a and a second magnet 21b are arranged. Specifically, for example, when the second magnet 21a is arranged so that the N pole is on the side of the first magnet 11c, the first magnet 11c is arranged so that the N pole is on the side of the second magnet 21a. In this case, since the second magnet 21b side of the first magnet 11c becomes the S pole, the second magnet 21b is arranged so that the first magnet 11c side becomes the S pole.
  • the repulsive force between the first magnet 11c and the second magnet 21a or the repulsive force between the first magnet 11c and the second magnet 21b causes the first cylinder 10 to move.
  • first magnet 11c is provided in the central portion of the first tube 10 in the third embodiment, it is not limited to this.
  • the position where the first magnet 11c is provided may be anywhere other than both ends of the first tube.
  • first to third embodiments may be combined as appropriate.
  • the first magnet 11 is provided at one position in the circumferential direction of the circle centered on the optical axis OA.
  • a plurality of them may be provided in the circumferential direction.
  • the two first magnets 11 when two first magnets 11 are arranged in the circumferential direction of a circle centered on the optical axis OA, the two first magnets 11 face each other across the optical axis OA on a plane orthogonal to the optical axis OA. It should be arranged so that Further, when three first magnets 11 are arranged, the three first magnets 11 are arranged such that the center of gravity of the triangle connecting the centers of gravity of the three first magnets 11 is the center of the lens group L4 on the plane perpendicular to the optical axis OA. It is desirable to arrange so as to overlap with the center (optical axis OA).
  • the first magnets 11a and 11b are arranged below the optical axis OA, and the first magnets 11a and 11b are arranged above the optical axis OA.
  • the shapes of the first magnet 11 and the second magnet 21 are not limited to rectangular parallelepipeds and cubes, and may be other shapes such as circles and spheres.
  • the shape of the first magnet 11 may be a sheet-like shape that is attached to part or all of the object-side surface and the image-side surface of the first tube 10 .
  • the shapes of the first magnet 11 and the second magnet 21 may be different.
  • the first magnet 11 may be sheet-shaped and the second magnet 21 may be rectangular parallelepiped, or vice versa.
  • the lens group L4 driven by the voice coil motor 50 is the focus lens.
  • the lens group L4 moves while being guided by the guide bar 33 and the sub-guide bar 34.
  • the lens group L4 is not limited to this. may be guided by
  • the first magnets 11a and 11b provided in the first tube 10 are arranged so as to prevent the guide bar 33 and the sub-guide bar 34 from rattling due to the repulsive force between them and the second magnets 21a and 21b. Placement is desirable.
  • a straight line A connecting the central axis of the guide bar 33 and the optical axis OA, and a straight line B passing through the optical axis OA and perpendicular to the straight line A are shown in FIG.
  • the first magnets 11a and 11b may be installed in the vicinity of the sub-guide bar .
  • cushioning material 40 is provided in the above embodiment, the cushioning material 40 may be omitted.
  • the second barrel 20 does not move in the direction of the optical axis OA, but the second barrel 20 may move in the direction of the optical axis OA.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)

Abstract

L'invention concerne un barillet de lentille comprenant un premier cylindre capable de maintenir une lentille et de se déplacer dans la direction de l'axe optique, un second cylindre différent du premier cylindre, au moins un premier aimant disposé sur le premier cylindre, et au moins un second aimant disposé sur le second cylindre, une force de répulsion étant générée entre le premier aimant et le second aimant.　
PCT/JP2022/037415 2021-10-13 2022-10-06 Barillet de lentille et dispositif d'imagerie WO2023063205A1 (fr)

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JP2023554462A JPWO2023063205A1 (fr) 2021-10-13 2022-10-06

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JP2021-168009 2021-10-13
JP2021168009 2021-10-13

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WO2023063205A1 true WO2023063205A1 (fr) 2023-04-20

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PCT/JP2022/037415 WO2023063205A1 (fr) 2021-10-13 2022-10-06 Barillet de lentille et dispositif d'imagerie

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08166530A (ja) * 1994-12-15 1996-06-25 Mitsubishi Electric Corp レンズ鏡筒
JP2005308780A (ja) * 2004-04-16 2005-11-04 Sankyo Seiki Mfg Co Ltd レンズ駆動装置
JP2016099523A (ja) * 2014-11-21 2016-05-30 オリンパス株式会社 レンズ鏡筒
WO2019123862A1 (fr) * 2017-12-20 2019-06-27 株式会社ｎｉｔｔｏｈ Barillet d'objectif et dispositif de caméra
JP2021196581A (ja) * 2020-06-18 2021-12-27 株式会社タムロン レンズユニット、及びそれを備えたカメラ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08166530A (ja) * 1994-12-15 1996-06-25 Mitsubishi Electric Corp レンズ鏡筒
JP2005308780A (ja) * 2004-04-16 2005-11-04 Sankyo Seiki Mfg Co Ltd レンズ駆動装置
JP2016099523A (ja) * 2014-11-21 2016-05-30 オリンパス株式会社 レンズ鏡筒
WO2019123862A1 (fr) * 2017-12-20 2019-06-27 株式会社ｎｉｔｔｏｈ Barillet d'objectif et dispositif de caméra
JP2021196581A (ja) * 2020-06-18 2021-12-27 株式会社タムロン レンズユニット、及びそれを備えたカメラ

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