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公开(公告)号：US20240219812A1
公开(公告)日：2024-07-04
申请号：US17793677
申请日：2021-12-17
Inventor： Fumio SHINANO , Tetsuya MORITA , Yuichiro KIMOTO
IPC: G03B13/32
CPC classification number: G03B13/32
Abstract: A zoom ring drive device (10) comprises a guide unit (11), a guide unit (14), a drive gear (21), and a DC motor (23). The guide unit (11) slides in the optical axis direction of a lens (L1) included in the lens barrel (32). The guide unit (14) is provided to the guide unit (11) and slides in a direction perpendicular to the optical axis direction. The drive gear (21) is provided in the guide unit (14) at a position where the drive gear comes into contact with a ring gear (25) wound around a zoom ring (33), and rotates in a state of being in contact with the ring gear (25) to rotate the zoom ring (33). The DC motor (23) is provided to the guide unit (14) and rotationally drives the drive gear (21).
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公开(公告)号：US20240168253A1
公开(公告)日：2024-05-23
申请号：US18388477
申请日：2023-11-09
Inventor： Yuichiro KIMOTO , Tetsuya MORITA , Masayuki SHODAI , Naoki YOSHIKAWA , Takeshi SAKAKIBARA
IPC: G02B7/02
CPC classification number: G02B7/022
Abstract: A lens barrel 10 comprises a fourth lens group unit 20, cam pins 22a and 22b, a biasing pin 23, a cutout portion C1, a substantially cylindrical first lens group unit 13, and a plurality of rectilinear guide portions 25. The fourth lens group unit 20 has a substantially cylindrical main body portion 21 that holds a lens L4a, etc. The cam pins 22a and 22b are provided to the fourth lens group unit 20, protrude in the radial direction, and engage in the cam grooves 14b of the cam frame 14. The biasing pin 23 is provided to the fourth lens group unit 20, is supported so as to bias in the radial direction, and engages in the cam groove 14b. The cutout portion C1 is formed by cutting out the portion of the main body portion 21 of the fourth lens group unit 20 opposite the biasing pin 23 in the direction of the optical axis. The main body portion 21 of the fourth lens group unit 20 is provided continuously in the circumferential direction, from the biasing pin 23 to the cam pins 22a and 22b.
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Patent Agency Ranking
公开(公告)号：US20220146779A1
公开(公告)日：2022-05-12
申请号：US17431509
申请日：2020-01-30
Inventor： Hideyuki TAKEZAWA , Masayuki TAKAHASHI , Tetsuya MORITA
Abstract: A lens barrel includes: a first lens holding frame; a fixed barrel holding the first lens holding frame and including an elongated window provided radially; and a first step-type eccentric roller rotatably fixed to the first lens holding frame. The first step-type eccentric roller includes usable and non-usable regions on a periphery substantially perpendicular to the rotation axis, a distance from a center of the rotation axis to any point within any one of the usable regions is constant, and the distance is different for each of the usable regions, and the first step-type eccentric roller is fixed to the first lens holding frame by rotating the first step-type eccentric roller about the rotation axis, changing an engagement position between one of the usable regions and a side forming the polygonal shape of the elongated window, and moving the lens group parallel to an optical axis to perform shift adjustment.
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公开(公告)号：US20170184810A1
公开(公告)日：2017-06-29
申请号：US15391044
申请日：2016-12-27
Inventor： Fumio SHINANO , Tetsuya MORITA
Abstract: A lens barrel includes a tip member, a lens hood, and a sliding member. The tip member is disposed on a subject side in an optical axis direction, and includes an optical system. The lens hood moves between a storage position and a use position in the optical axis direction. The sliding member is provided on an inner circumferential surface side of the lens hood. When the lens hood moves from the storage position to the use position, the sliding member moves to the subject side in the optical axis direction in a state where the sliding member is in contact with an outer circumferential surface of the tip member. In a state where the lens hood is located at the storage position, an interval of at least a portion of a clearance formed between the inner circumferential surface of the lens hood and the outer circumferential surface of the tip member is narrowed toward the subject side in the optical axis direction.
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公开(公告)号：US20200257073A1
公开(公告)日：2020-08-13
申请号：US16775669
申请日：2020-01-29
Inventor： Hideyuki TAKEZAWA , Masayuki TAKAHASHI , Tetsuya MORITA
Abstract: A lens barrel includes: a first ring; a second ring that switches between a first position and a second position by sliding in an optical axis direction; a plurality of biasing mechanisms that are provided on one of the first ring and the second ring, and providing adjustable biasing force in a radial direction; and a locking portion provided on the other of the first ring and the second ring on which the plurality of biasing mechanisms are not provided. The plurality of biasing mechanisms each include an elastic component having a contact portion and a biasing component that biases the elastic component. The first ring and the second ring are integrally rotatable when the contact portion contacts the locking portion which opposes the contact portion when the second ring is at the second position.
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公开(公告)号：US20240241340A1
公开(公告)日：2024-07-18
申请号：US18534582
申请日：2023-12-09
Inventor： Yuichiro KIMOTO , Tetsuya MORITA , Masayuki SHODAI , Naoki YOSHIKAWA , Takeshi SAKAKIBARA
Abstract: A first lens group unit 20 includes a lens L2, a blacked-out portion L2b, a lens frame 22, and an injection hole 21a. The lens L2 has a thrust surface L2d that intersects the direction of the optical axis AX, a thrust surface L2c on the opposite side from the thrust surface L2d, and an edge surface L2e that connects the thrust surface L2d and the thrust surface L2c. The blacked-out portion L2b is provided to an edge surface L2e of the lens L2, and suppresses the reflection of light incident on the lens L2 on the edge surface L2e. The lens frame 22 has a substantially cylindrical shape, and holds the lens L2, which is inserted from the thrust surface L2d side along the cylindrical inner peripheral surface 22a. The injection hole 21a is used to bond the lens L2 and the lens frame 22 with an adhesive applied to the thrust surface L2c.
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公开(公告)号：US20220163752A1
公开(公告)日：2022-05-26
申请号：US17421597
申请日：2019-12-23
Inventor： Takeshi SAKAKIBARA , Makoto UMEDA , Naoki YOSHIKAWA , Tatsuhiro ENOMOTO , Tetsuya MORITA
Abstract: An optical device actuator comprises a movable frame (33) including a focus lens (L11); a main shaft guide (40); a piezoelectric element (36a); a weight (36b); a fixed frame (30); a guide holding frame (35); and a spring (36c). The piezoelectric element (36a) imparts vibration to a first end (40a) side of the main shaft guide (40). The fixed frame (30) supports the piezoelectric element (36a) and the weight (36b) disposed on the first end (40a) side of the main shaft guide (40). The guide holding frame (35) supports, in a fixed state, the main shaft guide (40) on a second end (40b) side on the opposite side from the first end (40a) side. The spring (36c) is provided on the first end (40a) side of the main shaft guide (40), and presses the piezoelectric element (36a) along the axial direction with respect to the first end (40a) of the main shaft guide (40) via the weight (36b).
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