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公开(公告)号：US20240085658A1
公开(公告)日：2024-03-14
申请号：US18096139
申请日：2023-01-12
Inventor： Takeshi SAKAKIBARA , Naoki YOSHIKAWA
Abstract: A lens barrel 100 includes a fifth lens group unit 25, a focus ring 31, an internal gear 31b, a pinion gear 41, a detection magnet 43, and a GMR sensor 44. The internal gear 31b rotates integrally with the focus ring 31 and has a plurality of gear portions 31c. The pinion gear 41 is provided on the inner peripheral surface side of the focus ring 31 and has a gear portion 41a that mates with the gear portion 31c of the internal gear 31b, and a guide shaft 42 that is inserted through the center of the gear portion 41a. The guide shaft 42 is inserted through the detection magnet 43, and the detection magnet 43 rotates integrally with the gear portion 41a and has a magnetized surface 43b on which different magnetic poles are alternately magnetized. The GMR sensor 44 is fixed to a member separate from the detection magnet 43, is provided at a position adjacent to the detection magnet 43, and detects the rotation of the detection magnet 43 that rotates along with the pinion gear 41.
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Patent Agency Ranking
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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公开(公告)号：US20190072743A1
公开(公告)日：2019-03-07
申请号：US16179949
申请日：2018-11-04
Inventor： Fumio SHINANO , Takeshi SAKAKIBARA
Abstract: A lens barrel includes a first lens frame that holds a first lens; a second lens frame that holds a second lens, and holds the first lens frame movably along an optical axis; and a pair of linear units that drive the movement of the first lens frame along the optical axis. When seen in an optical axis direction, the pair of linear units are disposed along the outer circumference of the first lens frame, at mutually non-opposing positions across the optical axis.
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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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公开(公告)号：US20210048682A1
公开(公告)日：2021-02-18
申请号：US16963492
申请日：2019-01-25
Inventor： Makoto UMEDA , Tetsuya UNO , Naoki YOSHIKAWA , Takeshi SAKAKIBARA , Kenichi MIYAMORI
Abstract: A lens barrel (10) comprises a fixed frame (30), a main shaft guide (40) that is fixed to the fixed frame, a movable frame (33) that moves along the main shaft guide (40), a driver (magnet (32), drive coil (33c)) that moves the movable frame (33) relatively with respect to the fixed frame (30) along the main shaft guide (40), and a vibration imparting unit (36) that imparts vibration to the main shaft guide (40).
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