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公开(公告)号：US10342435B2
公开(公告)日：2019-07-09
申请号：US14643346
申请日：2015-03-10
Applicant: FUJIFILM Corporation
Inventor： Kaku Irisawa , Takeya Abe
Abstract: The light irradiation range of a probe for a photoacoustic measurement apparatus is increased. The probe for a photoacoustic measurement apparatus includes a light transmission unit that irradiates a subject with light, and a photoacoustic wave detector 52 that detects a photoacoustic wave generated from the subject. The light transmission unit includes light propagation part 51 for propagating light, and a light transmission member 55. Further, the light transmission member 55 includes an inner peripheral surface 55a that is formed in the shape of a curved concave surface and an outer peripheral surface 55b that has a radius of curvature larger than the radius of curvature of the inner peripheral surface 55a and is formed in the shape of a curved convex surface. The outer peripheral surface 55b is disposed so that the light L emitted from the light propagation part 51 is incident on the inner peripheral surface 55a.
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公开(公告)号：US11307380B2
公开(公告)日：2022-04-19
申请号：US17117554
申请日：2020-12-10
Applicant: FUJIFILM Corporation
Inventor： Shinji Otsuka , Yukihiro Kaneko , Masahiko Miyata , Takeya Abe
Abstract: A lens barrel including a first main shaft and a first sub-shaft that guide the movement of a third front lens group (G3a), a second main shaft and a second sub-shaft that guide the movement of a fourth lens group (G4), a hall element that is used to detect the position of the third front lens group (G3a), and an MR sensor that is used to detect the position of the fourth lens group (G4) are disposed on a straight line passing through an optical axis in a cross section orthogonal to the optical axis. The first main shaft and the second main shaft 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.
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公开(公告)号：US10231627B2
公开(公告)日：2019-03-19
申请号：US15498908
申请日：2017-04-27
Applicant: FUJIFILM Corporation
Inventor： Kaku Irisawa , Takeya Abe
Abstract: An acoustic wave detector that detects an acoustic wave from a subject, an optical fiber that guides light emitted from a light source to a probe body, and a light guide member that guides light from a light entrance end, which is optically coupled to the optical fiber, to a light exit end, which is located in the vicinity of the acoustic wave detector, are provided. The light guide member is secured in the probe body with a securing material provided at least partially around the light guide member. The conditional expression below is satisfied: sin−1(n2/n1)×(180°/π)
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公开(公告)号：US09662020B2
公开(公告)日：2017-05-30
申请号：US14449500
申请日：2014-08-01
Applicant: FUJIFILM Corporation
Inventor： Kaku Irisawa , Takeya Abe
CPC classification number: A61B5/0095
Abstract: An acoustic wave detector that detects an acoustic wave from a subject, an optical fiber that guides light emitted from a light source to a probe body, and a light guide member that guides light from a light entrance end, which is optically coupled to the optical fiber, to a light exit end, which is located in the vicinity of the acoustic wave detector, are provided. The light guide member is secured in the probe body with a securing material provided at least partially around the light guide member. The conditional expression below is satisfied: sin−1(n2/n1)×(180°/π)
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公开(公告)号：US11892755B2
公开(公告)日：2024-02-06
申请号：US18163847
申请日：2023-02-02
Applicant: FUJIFILM Corporation
Inventor： Takeya Abe , Keito Kamio , Ryosuke Nagami , Shinichiro Fujiki , Kazuaki Okamori , Yuya Sakai
Abstract: A lens unit includes a guided portion that includes a first bearing portion and a second bearing portion disposed to be spaced apart from each other in a direction X and is slidably supported by a guide shaft, and a lens holding member. The lens unit includes a first tilt-preventing member having a linear expansion coefficient lower than a linear expansion coefficient of the lens holding member. The first tilt-preventing member is fixed to a region of the guided portion positioned between the first bearing portion and second bearing portion.
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Patent Agency Ranking
公开(公告)号：US11543620B2
公开(公告)日：2023-01-03
申请号：US16891236
申请日：2020-06-03
Applicant: FUJIFILM Corporation
Inventor： Takeya Abe , Kenji Hoshino , Hideo Kobayashi , Yuichi Kawanabe
IPC: G02B7/04 , H02K41/035
Abstract: Provided are a lens barrel and an imaging device, with which it is possible to lock an optical member of which the movement in an optical axis direction is made free in a case where there is no electrification, particularly to hold the optical member in a locked state without use of electric power. A movable frame that holds a focus lens is driven in the optical axis direction by a linear motor. In a case where the movable frame is to be locked with the linear motor being not electrified, the movable frame (engagement portion) is caused to abut onto a restriction portion at an end portion of the movable range of the movable frame and a locking ring is caused to rotationally move to a locking position by an electric actuator. Accordingly, the movable frame is fixed by the restriction portion and a locking portion of the locking ring to become unable to move. The electric actuator includes a worm gear as a power transmission mechanism and it is possible to hold the locking ring at the locking position by means of an irreversible rotation function of the worm gear.
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公开(公告)号：US10716539B2
公开(公告)日：2020-07-21
申请号：US15725522
申请日：2017-10-05
Applicant: FUJIFILM Corporation
Inventor： Kazuhiro Tsujita , Takeya Abe
Abstract: An optical fiber guides light output from a light source to an ultrasound probe. The ultrasound probe includes a light guiding section that guides the light from a light input end, which is optically coupled with the optical fiber to a light output end provided in the vicinity of ultrasonic transducers. The light guiding section has a first light guiding portion that includes the light input end, and a second light guiding portion that includes the light output end. The first light guiding portion is formed by glass, and magnifies input light. The second light guiding portion is formed by resin, and emits the light toward a subject from the light output end.
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公开(公告)号：US11609484B2
公开(公告)日：2023-03-21
申请号：US17206133
申请日：2021-03-19
Applicant: FUJIFILM Corporation
Inventor： Takeya Abe , Keito Kamio , Ryosuke Nagami , Shinichiro Fujiki , Kazuaki Okamori , Yuya Sakai
Abstract: A lens unit includes a guided portion that includes a first bearing portion and a second bearing portion disposed to be spaced apart from each other in a direction X and is slidably supported by a guide shaft, and a lens holding member. A first distance between the center of a fixing portion of the lens holding member and the center of the first bearing portion in the direction X is set to be longer than a second distance between the center of the fixing portion and the center of the second bearing portion in the direction X. A first tilt-preventing member having a linear expansion coefficient lower than that of the lens holding member is fixed to a region, which is closer to the first bearing portion than the center of the fixing portion, of a portion of the guided portion positioned between the first and second bearing portions.
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公开(公告)号：US10568605B2
公开(公告)日：2020-02-25
申请号：US14319405
申请日：2014-06-30
Applicant: FUJIFILM Corporation
Inventor： Kaku Irisawa , Takeya Abe
Abstract: In an acoustic image generation apparatus with a probe having an ultrasonic transducer, providing a scanning length setting part that sets a target scanning length in a scanning process of the probe, a coordinate obtaining part that sequentially obtains a coordinate of the probe in real space, a scanned length calculation part that calculates a scanned length based on the coordinate obtained by the coordinate obtaining part, a progress level display generation part that generates a progress level display that indicates progress of the scanning process based on the target scanning length and the scanned length, and a display part that displays the progress level display.
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公开(公告)号：US09861340B2
公开(公告)日：2018-01-09
申请号：US13948697
申请日：2013-07-23
Applicant: FUJIFILM Corporation
Inventor： Kazuhiro Tsujita , Takeya Abe
CPC classification number: A61B8/4444 , A61B5/0035 , A61B5/0059 , A61B5/0095 , A61B8/4416 , A61B8/4455 , G01N29/2418 , G01N2291/02475
Abstract: An optical fiber guides light output from a light source to an ultrasound probe. The ultrasound probe includes a light guiding section that guides the light from a light input end, which is optically coupled with the optical fiber to a light output end provided in the vicinity of ultrasonic transducers. The light guiding section has a first light guiding portion that includes the light input end, and a second light guiding portion that includes the light output end. The first light guiding portion is formed by glass, and magnifies input light. The second light guiding portion is formed by resin, and emits the light toward a subject from the light output end.
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