公开(公告)号：US20230000331A1

公开(公告)日：2023-01-05

申请号：US17940153

申请日：2022-09-08

Applicant: OLYMPUS CORPORATION

Inventor： Yasuo SASAKI

IPC: A61B1/06 ,  A61B1/00

Abstract: An endoscope system includes a light source that emits lights with first to n-th wavelengths, a lens that makes the lights with the first to n-th wavelengths parallel lights, a diffractive optical element (DOE) that converges components of the lights with the first to n-th wavelengths, the components being included in the parallel lights, into first to n-th linear lights at mutually different positions, a slit that projects, onto a subject, first to n-th pattern lights based on the first to n-th linear lights, an imager that captures, as one-frame image, an image of the subject onto which the first to n-th pattern lights are projected, and a processor being configured to calculate a distance to the subject or a shape of the subject based on the image captured by the imager.

公开(公告)号：US20200081263A1

公开(公告)日：2020-03-12

申请号：US16687787

申请日：2019-11-19

Applicant: OLYMPUS CORPORATION

Inventor： Eiji YAMAMOTO ,  Bakusui DAIDOJI ,  Yasuo SASAKI

IPC: G02B27/48 ,  G02B21/06 ,  G02F1/035 ,  G02B21/36 ,  G02F1/125 ,  A61B1/06 ,  A61B1/07 ,  A61B1/04 ,  A61B1/00

Abstract: An illuminating device includes an illumination light generator configured to generate illumination pulses of coherent light, and a speckle modulator configured to modulate speckle caused by the coherent light. The illumination pulse generator repeatedly generates a single illumination pulse group including a plurality of illumination pulses as a repetitive illumination pulse group.

公开(公告)号：US20190038178A1

公开(公告)日：2019-02-07

申请号：US16152490

申请日：2018-10-05

Applicant: OLYMPUS CORPORATION

Inventor： Yasuo SASAKI ,  Hiromasa FUJITA ,  Eiji YAMAMOTO

IPC: A61B5/06 ,  G01B7/30 ,  A61B34/20

Abstract: A magnetic field sensor system includes a one-axis magnetic field generator that generates a magnetic field, three or more three-axis magnetic field detectors that detect a magnetic field for each axis and are arranged on a substantially straight line, and a calculator that calculates, from a detection result of the magnetic field, a spatial position or a spatial direction of the one-axis magnetic field generator. The calculator selects two or more three-axis magnetic field detectors, which generate no symmetry of magnetic fields, based on a preset judgment standard of symmetry of magnetic fields, and calculates the spatial position or the spatial direction of the one-axis magnetic field generator, based on detection results of the magnetic field between the selected two or more three-axis magnetic field detectors and the one-axis magnetic field generator.

公开(公告)号：US20170370697A1

公开(公告)日：2017-12-28

申请号：US15701551

申请日：2017-09-12

Applicant: OLYMPUS CORPORATION

Inventor： Yasuo SASAKI ,  Eiji YAMAMOTO ,  Hiromasa FUJITA

IPC: G01B9/02 ,  G02B6/02

CPC classification number: G01B9/02027 ,  G01B9/02015 ,  G01B11/18 ,  G02B6/02057 ,  G02B6/0208 ,  G02B6/14

Abstract: A bending detecting system includes a light guide, a first grating and a light detector. The light guide has elongated shape and is configured to guide an incident light in a propagating direction. The light guide includes a core and a cladding disposed around the core. The first grating is disposed in a boundary area, the boundary area including an outer surface of the core, and an adjacent area that is adjacent to the outer surface. The first grating includes a first periodic structure along the propagating direction with a first pitch, and is configured to generate a first diffracted light from the incident light. The light detector is configured to detect the first diffracted light from the first grating, and detect a bending of the light guide based upon an optical feature amount of the first diffracted light.

公开(公告)号：US20180266813A1

公开(公告)日：2018-09-20

申请号：US15983549

申请日：2018-05-18

Applicant: OLYMPUS CORPORATION

Inventor： Yasuo SASAKI ,  Eiji YAMAMOTO

IPC: G01B11/255 ,  G02B6/02 ,  A61B1/005 ,  G02B23/26

CPC classification number: G01B11/255 ,  A61B1/005 ,  G01B11/18 ,  G01B11/24 ,  G02B6/02042 ,  G02B6/0208 ,  G02B6/022 ,  G02B23/26

Abstract: A curvature sensor includes a light source, a flexible light guide including cores, and FBG sensors that are provided in the cores and constitute FBG sensor groups at predetermined positions at predetermined positions along longitudinal axes of the cores. The curvature sensor includes a detector that detects an optical spectrum of light from the FBG sensors, and a processor that obtains a bend of the light guide. FBG sensors provided in a core include a first FBG sensor and a second FBG sensor next to it. The first and second FBG sensors include gratings having first and second pitches. The first pitch is shorter than the second pitch and is closer to the second pitch than other pitches of gratings of all FBG sensors that are provided in the core and include gratings having pitches shorter than the second pitch.

公开(公告)号：US20180055336A1

公开(公告)日：2018-03-01

申请号：US15800199

申请日：2017-11-01

Applicant: OLYMPUS CORPORATION

Inventor： Ken SATO ,  Yasuo SASAKI ,  Hiromasa FUJITA

IPC: A61B1/005 ,  A61B1/07 ,  A61B1/01 ,  A61B34/20

Abstract: A bend information computation apparatus is to compute bend information representing a direction and a magnitude of bend of a target group including targets disposed at an identical position along a light guide. Each target modulates the intensity of guided light in accordance with the direction and magnitude of bend. The apparatus includes an input unit to be input detected light quantity information corresponding to each target, a storage to store a bend coefficient and intensity modulation information of each target, and a light quantity information relationship between the bend coefficient and intensity modulation information and the detected light quantity information, a first arithmetic operator to calculate light quantity variation information of each target, based on the detected light quantity information and light quantity information relationship, and a second arithmetic operator to calculate the bend information of the target group, based on the light quantity variation information and bend coefficient.

公开(公告)号：US20160064679A1

公开(公告)日：2016-03-03

申请号：US14936244

申请日：2015-11-09

Applicant: OLYMPUS CORPORATION ,  The University of Tokyo ,  KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION

Inventor： Yoshiharu AJIKI ,  Isao SHIMOYAMA ,  Kiyoshi MATSUMOTO ,  Tetsuo KAN ,  Koichi KARAKI ,  Yasuo SASAKI ,  Masayuki YAHIRO ,  Akiko HAMADA

IPC: H01L51/44 ,  H01L51/00 ,  H01L51/42

CPC classification number: H01L51/441 ,  G01J1/42 ,  H01L51/0068 ,  H01L51/0081 ,  H01L51/0091 ,  H01L51/4213 ,  H01L51/424 ,  H01L51/4253 ,  Y02E10/549 ,  Y02P70/521

Abstract: Provided is a photodetector including: an organic semiconductor (20) having protrusions; a metal layer (30) added onto the organic semiconductor (20), for promoting at least one of localized plasmon resonance and surface plasmon resonance in which electrons are excited through irradiation of detection light; and a semiconductor (40) forming a junction with the metal layer (30), for allowing electrons excited through the plasmon resonance to pass through the junction (40a) with the metal layer (30).

Abstract translation: 提供一种光检测器，包括：具有突起的有机半导体（20） 添加到有机半导体（20）上的金属层（30），用于促进通过照射检测光激发电子的局部等离子体共振和表面等离子体共振中的至少一种; 以及形成与所述金属层（30）的结的半导体（40），用于允许通过所述等离子体共振激发的电子通过所述接合部（40a）与所述金属层（30）通过。

公开(公告)号：US20220361731A1

公开(公告)日：2022-11-17

申请号：US17875575

申请日：2022-07-28

Applicant: OLYMPUS CORPORATION

Inventor： Hiroyuki KAMEE ,  Yasuo SASAKI

IPC: A61B1/00 ,  A61B1/06 ,  A61B1/07

Abstract: Provided is a light distribution inspection device capable of accurately and easily inspecting light quantity and luminous intensity distribution of light emitted from a light guide member. A light distribution inspection device comprising a processor, wherein the processor is configured to: acquire, based on a plurality of beams of inspection light each incident on a light guide of an illumination device, a light quantity distribution characteristic of each of a plurality of beams of emission light emitted from each of a plurality of emission sections of the illumination device optically connected to the light guide, in association with incident position information of each of the beams of inspection light; calculate light distribution information of the illumination device, based on each of pieces of the incident position information and each of the light quantity distribution characteristics; and analyze the light distribution information to calculate light quantity and luminous intensity distribution.

公开(公告)号：US20220142568A1

公开(公告)日：2022-05-12

申请号：US17584875

申请日：2022-01-26

Applicant: OLYMPUS CORPORATION

Inventor： Yasuo SASAKI ,  Hiroyuki KAMEE

IPC: A61B5/00 ,  A61B1/07 ,  A61B1/06 ,  A61B1/05 ,  A61B1/005

Abstract: An optical device includes a light source unit and a body unit. The light source unit includes a first light source configured to emit first irradiation light, a second light source configured to emit second irradiation light, a light source control unit, and a light collecting unit. The body unit includes an insertion section. The insertion section includes a light guide member, an optical system, an optical filter, a first imager configured to output image information of a subject, and a second imager configured to output distance information from the optical system to the subject. In the second irradiation light, light intensity is temporally modulated, and the first irradiation light and the second irradiation light are emanated from the insertion section. First measurement light includes light in the same wavelength band as a part of the wavelength band of the first irradiation light, and second measurement light includes light in the same wavelength band as the wavelength band of the second irradiation light, and error information included in the distance information is reduced.

公开(公告)号：US20200081264A1

公开(公告)日：2020-03-12

申请号：US16687823

申请日：2019-11-19

Applicant: OLYMPUS CORPORATION

Inventor： Eiji YAMAMOTO ,  Bakusui DAIDOJI ,  Yasuo SASAKI

IPC: G02B27/48 ,  G02F1/01 ,  G02B21/06 ,  G02B21/36 ,  G02B23/24 ,  H04N5/225 ,  H04N5/232 ,  A61B1/06 ,  A61B1/07 ,  A61B1/04 ,  A61B1/00

Abstract: An illuminating device includes an illumination pulse generator configured to generate illumination pulses of coherent light, a speckle modulator configured to modulate speckle caused by the coherent light, and a synchronization controller configured to control the illumination pulse generator and the speckle modulator so as to synchronize pulse generation timing of the illumination pulse generator and drive timing of the speckle modulator. The speckle modulator periodically changes a driving intensity of the speckle modulator.