公开(公告)号：US20200329185A1

公开(公告)日：2020-10-15

申请号：US16912683

申请日：2020-06-25

Applicant: FUJIFILM Corporation

Inventor： Hajime FUKUSHIMA ,  Shinji OTSUKA

IPC: H04N5/232

Abstract: An image shake correction device (3) includes a movable member (2), a support member (1) including a movement prevention member (1B, 1C) for preventing the movable member (2) from being lifted, and a movement restriction unit that restricts a movement range of the movable member (2). The movement restriction unit includes a hole portion (11a) formed in the support member (1) and an insertion member (28a) inserted into the hole portion (11a) formed in the movable member (2). The insertion member (28a) has an abutting portion (283a) that moves in the hole portion (11a) in directions X, Y, and θ with the movement of the movable member (2), and a wide width portion (281a) which is wider than the abutting portion (283a).

公开(公告)号：US20230305364A1

公开(公告)日：2023-09-28

申请号：US18187551

申请日：2023-03-21

Applicant: FUJIFILM Corporation

Inventor： Masahiro HIDESHIMA ,  Masahiko MIYATA ,  Shinji OTSUKA ,  Takeya ABE

IPC: G03B13/36 ,  G03B5/02 ,  H02K11/02 ,  H02K11/21 ,  H02K41/035

CPC classification number: G03B13/36 ,  G03B5/02 ,  H02K11/02 ,  H02K11/21 ,  H02K41/0354 ,  G03B2205/0046 ,  G03B2205/0069

Abstract: A drive device includes a magnetic circuit unit including a first yoke, a second yoke, and a first magnet, a magnetic circuit unit including the first yoke, the second yoke, a second magnet, a first coil that is bonded to a focus lens, in which the magnetic circuit units drive the first coil and the focus lens by an electromagnetic force generated in the first coil, the first magnet corresponds to a first movement amount of movement of the focus lens, and the second magnet corresponds to a second movement amount of movement of the focus lens.

公开(公告)号：US20230262314A1

公开(公告)日：2023-08-17

申请号：US18168407

申请日：2023-02-13

Applicant: FUJIFILM Corporation

Inventor： Takeya ABE ,  Shinji OTSUKA ,  Azuchi ENDO

IPC: H04N23/57 ,  G02B7/04 ,  H02N2/02

CPC classification number: H04N23/57 ,  G02B7/04 ,  H02N2/025

Abstract: A lens driving mechanism includes first and second piezoelectric rods that move a lens and first and second sensors that detect a position of the lens. An angle formed between a line (a first piezoelectric line) that extends from the first piezoelectric rod to be perpendicular to an optical axis and a line (a first sensor line) that extends from the first sensor to be perpendicular to the optical axis is smaller than 90°. An angle formed between a line (a second piezoelectric line) that extends from the second piezoelectric rod to be perpendicular to the optical axis and a line (a second sensor line) that extends from the second sensor to be perpendicular to the optical axis is smaller than 90°.

公开(公告)号：US20210096320A1

公开(公告)日：2021-04-01

申请号：US17117640

申请日：2020-12-10

Applicant: FUJIFILM Corporation

Inventor： Shinji OTSUKA ,  Yukihiro KANEKO

IPC: G02B7/08 ,  G03B5/00 ,  H04N5/225 ,  G02B7/09 ,  H02K41/035

Abstract: There are provided a lens barrel and an imaging device that can fix a movable member to a stationary frame without providing a member for fixing the movable member. The lens barrel includes a first motor (56) that drives a third front lens group-holding frame (24B) by first magnets (56A) provided on the third front lens group-holding frame (24B) and a first coil (56C), and a second motor (58) that drives a fourth lens group-movable holding frame (26B) by second coils (58A) provided on the fourth lens group-movable holding frame (26B) and second magnets (58B) provided on a fourth lens group base-holding frame (26A) fixed to the stationary barrel (12) and the cam barrel (14). The third front lens group-holding frame (24B) is fixed by a magnetic force between the first magnets (56A) and inner and outer yokes (58C, 58D) provided on the fourth lens group base-holding frame (26A) in a case where the application of current to the first coil (56C) is stopped.

公开(公告)号：US20170235090A1

公开(公告)日：2017-08-17

申请号：US15584858

申请日：2017-05-02

Applicant: FUJIFILM Corporation

Inventor： Yukitaka TAKESHITA ,  Mitsuhiko OKA ,  Yuichi KAWANABE ,  Yi PAN ,  Shinji OTSUKA ,  Kazuyoshi AZEGAMI

IPC: G02B7/08 ,  G02B7/10 ,  H04N5/232 ,  G03B13/36 ,  G02B7/02 ,  H04N5/225

CPC classification number: G03B13/32 ,  G02B7/02 ,  G02B7/04 ,  G02B7/08 ,  G02B7/102 ,  G03B17/14 ,  H04N5/2254 ,  H04N5/23209 ,  H04N5/23212 ,  H04N5/23245 ,  H04N5/23296

Abstract: There is provided a lens barrel that can easily and reliably prevent an erroneous operation at the time of switching of a manual focus mode.A lens barrel body houses an imaging optical system including a focus lens. A focus operation ring rotates integrally with a first connection ring about an optical axis of the imaging optical system. A second connection ring is movable between an engagement position at which the second connection ring is engaged with the first connection ring and a cam ring and a disengagement position at which the second connection ring is not engaged with both of the first connection ring and the cam ring. A switching-operation ring is movable between a rotation-restriction position at which the switching-operation ring moves the second connection ring to the engagement position and a rotation-allowable position at which the switching-operation ring moves the second connection ring to the disengagement position.

公开(公告)号：US20220121000A1

公开(公告)日：2022-04-21

申请号：US17564866

申请日：2021-12-29

Applicant: FUJIFILM Corporation

Inventor： Hiroyuki IWASAKI ,  Yuichi KAWANABE ,  Shinji OTSUKA

IPC: G02B7/09

Abstract: Provided is a lens barrel capable of improving stop accuracy. A roller support shaft (61) is attached to an outer peripheral portion of a cam cylinder (16). A torque applying roller (102) is rotatably supported by the roller support shaft (61). A biasing ring (104) is fitted to an outer peripheral portion of a second fixed cylinder (12B) and is held to be movable in an axial direction. The biasing ring (104) is biased by a biasing spring (106) and pressed to abut against the torque applying roller (102). In a case where the cam cylinder (16) is rotated, the torque applying roller (102) rolls along the biasing ring (104). A load torque is applied to the rotation of the cam cylinder (16) by frictional force generated between the torque applying roller (102) and the roller support shaft (61) due to the rotation of the torque applying roller (102).

公开(公告)号：US20230152555A1

公开(公告)日：2023-05-18

申请号：US18156782

申请日：2023-01-19

Applicant: FUJIFILM Corporation

Inventor： Shinji OTSUKA ,  Satoru NEMOTO

IPC: G02B7/10 ,  G02B15/14 ,  G02B7/02

CPC classification number: G02B7/10 ,  G02B15/14 ,  G02B7/023 ,  G02B7/026

Abstract: Provided is a zoom lens device and an optical device with which it is possible to increase a moving distance of a moving cylinder in an optical axis direction without an increase in number of components, the moving cylinder including a lens group closest to a subject side. A zoom lens device (1) includes a fixed cylinder (30), a cam cylinder (20) that is positioned outside the fixed cylinder (30), a first movement group that is positioned outside the cam cylinder (20) and that includes a first lens group (H1) provided at a distal end portion, and a second movement group that is positioned inside the fixed cylinder (30) and that includes a second lens group (H2). The first movement group includes a first straight groove (4) that guides the first movement group straight and a first cam follower pin (3) that engages with a first cam groove formed at the cam cylinder (20), and the second movement group includes a second cam follower pin (2) that penetrates a second straight groove formed at the fixed cylinder (30) and a second cam groove formed at the cam cylinder (20) and that engages with the first straight groove (4).

公开(公告)号：US20210149210A1

公开(公告)日：2021-05-20

申请号：US17158443

申请日：2021-01-26

Applicant: FUJIFILM Corporation

Inventor： Hajime FUKUSHIMA ,  Shinji OTSUKA ,  Kouhei AWAZU

IPC: G02B27/64 ,  H04N5/232 ,  G03B5/02

Abstract: An image shake correction device includes a movement restrictor that restricts movement of a movable member in directions X, Y, θ, and Z. The movement restrictor includes a movement prevention member that is fixed to a base of a support member and prevents the movable member from moving in the direction Z while sandwiching the movable member in cooperation with the support member, a hole portion formed in the support member, and an insertion member that is formed in the movable member and is inserted into the hole portion. A wide width portion of the insertion member has a size that overlaps with the base of the support member even in a state in which an abutting portion of the insertion member is positioned in any position in the hole portion.

公开(公告)号：US20210088748A1

公开(公告)日：2021-03-25

申请号：US17117554

申请日：2020-12-10

Applicant: FUJIFILM Corporation

Inventor： Shinji OTSUKA ,  Yukihiro KANEKO ,  Masahiko MIYATA ,  Takeya ABE

IPC: G02B7/10 ,  G02B15/14 ,  G02B15/16

Abstract: There is provided a lens barrel that can stably support movable lens groups with compact configuration and accurately detect the positions of the movable lens groups. A first main shaft (48) and a first sub-shaft (50) that guide the movement of a third front lens group (G3a), a second main shaft (58) and a second sub-shaft (60) that guide the movement of a fourth lens group (G4), a hall element (84) that is used to detect the position of the third front lens group (G3a), and an MR sensor (94B) that is used to detect the position of the fourth lens group (G4) are disposed on a straight line passing through an optical axis (Z) in a cross section orthogonal to the optical axis (Z). The first main shaft (48) and the first sub-shaft (50) are disposed on the radially inner side than the second main shaft (58) and the second sub-shaft (60). The first main shaft (48) and the second main shaft (58) are disposed so as to overlap each other in a direction of the optical axis. In a drive unit for each lens group, a plurality of drive magnets are arranged symmetrically with respect to the straight line.

公开(公告)号：US20170199347A1

公开(公告)日：2017-07-13

申请号：US15469580

申请日：2017-03-27

Applicant: FUJIFILM Corporation

Inventor： Yukitaka TAKESHITA ,  Mitsuhiko OKA ,  Yuichi KAWANABE ,  Yi PAN ,  Shinji OTSUKA ,  Kazuyoshi AZEGAMI

IPC: G02B7/04 ,  H04N5/232 ,  H04N5/225

CPC classification number: G02B7/04 ,  G03B3/10 ,  G03B13/34 ,  G03B2205/0046 ,  H04N5/2254 ,  H04N5/23209 ,  H04N5/23212 ,  H04N5/23245 ,  H04N5/23293

Abstract: An object of the invention is to provide a camera body of which a manual focus mode can be easily switched.A lens barrel includes an imaging optical system, a first operation ring, a second operation ring, and first and second sensors. The first sensor detects the rotation of the first operation ring and the rotation angle and the rotational direction of the first operation ring. The second sensor detects the angular position of the second operation ring. The imaging optical system includes a focus lens. A camera body includes a body control unit. The body control unit selectively executes a first manual focus mode in which the focus lens is moved according to the rotational direction and the rotation angle detected by the first sensor and a second manual focus mode in which the focus lens is moved according to the angular position detected by the second sensor.