公开(公告)号：US20210208486A1

公开(公告)日：2021-07-08

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

IPC: G03B17/14 ,  H04N5/225 ,  G02B7/10

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.

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：US20150173626A1

公开(公告)日：2015-06-25

申请号：US14643346

申请日：2015-03-10

Applicant: FUJIFILM Corporation

Inventor： Kaku IRISAWA ,  Takeya ABE

IPC: A61B5/00

CPC classification number: A61B5/0095 ,  A61B8/12 ,  A61B8/4427 ,  A61B8/445 ,  A61B8/4483 ,  G01N21/1702 ,  G01N29/2418

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.

Abstract translation: 用于光声测量装置的探针的光照射范围增加。 用于光声测量装置的探针包括用光照射被检体的光传输单元和检测从被检体产生的光声波的光声波检测器52。 光传输单元包括用于传播光的光传播部分51和透光部件55.此外，透光部件55包括形成为弯曲凹面形状的内周面55a和外周面55b 其曲率半径大于内周面55a的曲率半径，并且形成为弯曲的凸面的形状。 外周面55b配置成从光传播部51射出的光L入射到内周面55a。

公开(公告)号：US20150038825A1

公开(公告)日：2015-02-05

申请号：US14519809

申请日：2014-10-21

Applicant: FUJIFILM Corporation

Inventor： Takeya ABE

IPC: A61B5/00 ,  G01N29/24

CPC classification number: A61B5/0095 ,  A61B5/0035 ,  A61B8/14 ,  A61B8/4416 ,  A61B8/4444 ,  A61B8/463 ,  A61B8/5246 ,  G01N29/2418 ,  G01N29/2462 ,  G01N2291/023

Abstract: An object of the invention is to reduce the size of a probe for a photoacoustic measurement device. A light guide 71 is arranged such that one of a two side surfaces 71a is closer to a probe axis C which faces a subject than the other side surface and a light emission end surface 71c is closer to the probe axis C than a light incident end surface 71b when the probe is used. When a refractive index of the light guide 71 with respect to the light is n1 and a refractive index of a medium around the light guide with respect to the light during photoacoustic measurement is n2 (n2

Abstract translation: 本发明的目的是减小用于光声测量装置的探针的尺寸。 光导71被布置成使得两个侧表面71a中的一个比另一个侧表面更接近于与被摄体相对的探测轴C，并且发光端表面71c比光入射端更靠近探测轴C 当使用探针时表面71b。 当光导71相对于光的折射率为n1并且在光声测量期间光导周围的介质的折射率相对于光的折射率为n2（n2