公开(公告)号：US11054565B2

公开(公告)日：2021-07-06

申请号：US16101551

申请日：2018-08-13

Applicant: OLYMPUS CORPORATION

Inventor： Atsuyoshi Shimamoto ,  Soichiro Koshika

IPC: A61B1/00 ,  G02B26/10 ,  G02B6/00 ,  F21V8/00 ,  G02B23/24

Abstract: An optical scanning apparatus including: an optical fiber that is configured to guide light from a light source to emit the light from a distal end thereof; a driver that is configured to oscillate the distal end of the optical fiber at a driving frequency in a direction intersecting a longitudinal axis of the optical fiber; a resonance-frequency detector that is configured to detect a resonance frequency of the distal end of the optical fiber; and a driving-frequency adjustor that is configured to adjust the driving frequency so that the ratio between the resonance frequency detected by the resonance-frequency detector and the driving frequency becomes constant.

公开(公告)号：US10126547B2

公开(公告)日：2018-11-13

申请号：US15065969

申请日：2016-03-10

Applicant: OLYMPUS CORPORATION

Inventor： Masato Fujiwara ,  Atsuyoshi Shimamoto ,  Takeharu Innami ,  Junichi Nishimura

IPC: G02B26/10 ,  A61B1/00 ,  A61B1/07 ,  G02B23/24

Abstract: An optical fiber is vibrated at an emitting end part by a scanning part, and light is irradiated from an emitting end face of the optical fiber onto an object to scan the object. The scanning part includes a pair of first direction coils facing each other in a first direction across the emitting end part, and a permanent magnet installed as penetrating the emitting end part. The permanent magnet is magnetized in the axial direction of the emitting end part. The scanning part drives, by supplying power to the first direction coils, the emitting end part to vibrate in the first direction in the second or higher-order resonance mode, forming nodes of the vibration within the permanent magnet. When in a state of non-vibration in the first direction, a relative distance between the permanent magnet and the first direction coils is smaller than that in other directions.

公开(公告)号：US11992192B2

公开(公告)日：2024-05-28

申请号：US17154083

申请日：2021-01-21

Applicant: OLYMPUS CORPORATION

Inventor： Ikutoshi Fukushima ,  Junichi Nishimura ,  Atsuyoshi Shimamoto ,  Mitsuru Namiki

IPC: A61B1/00 ,  A61B1/04 ,  A61B1/05 ,  A61B1/06

CPC classification number: A61B1/042 ,  A61B1/00009 ,  A61B1/00013 ,  A61B1/00167 ,  A61B1/00194 ,  A61B1/05 ,  A61B1/0655 ,  A61B1/0661

Abstract: An endoscope apparatus includes: a light source that radiates a pulsed light beam onto an imaging subject; an imaging optical system; an image transmission optical system that transmits the image of the imaging subject; an optical sensor that has a light receiving surface on which a plurality of pixels are arrayed and that detects a light level of the image; and one or more processors, wherein the optical sensor obtains light levels by detecting, in a time division manner, a reflected light beam of the pulsed light beam at each of the pixels, and wherein the processors are configured to: calculate an observation distance to the imaging subject from the imaging optical system on a basis of the light levels.

公开(公告)号：US11903643B2

公开(公告)日：2024-02-20

申请号：US17406412

申请日：2021-08-19

Applicant: OLYMPUS CORPORATION

Inventor： Ikutoshi Fukushima ,  Atsuyoshi Shimamoto ,  Mitsuru Namiki

IPC: A61B18/26 ,  A61B90/00 ,  A61B18/00

CPC classification number: A61B18/26 ,  A61B90/06 ,  A61B2018/00505 ,  A61B2018/00982 ,  A61B2090/061

Abstract: A lithotripsy apparatus includes: a treatment laser beam source that emits a treatment laser beam that crushes a stone; a guide light source that emits guide light; a photodetector that detects return light that returns as a result of the emitted guide light being reflected at the stone; and a processor including hardware, the processor being configured to: measure a distance from the treatment laser beam source to the stone on the basis of the return light; determine a condition of a bubble occurring between the treatment laser beam source and the stone on the basis of the measured distance; and adjust a light quantity of the treatment laser beam on the basis of the determined condition of the bubble.

公开(公告)号：US20180129032A1

公开(公告)日：2018-05-10

申请号：US15346852

申请日：2016-11-09

Applicant: OLYMPUS CORPORATION

Inventor： Daiki ARIYOSHI ,  Atsuyoshi Shimamoto ,  Soichiro Koshika

IPC: G02B23/24 ,  H04N5/232

CPC classification number: G02B23/2484 ,  G02B23/2469 ,  G02B26/103 ,  H04N2005/2255

Abstract: An endoscope observation system includes: a scanning type endoscope including an emission optical fiber configured to emit emission light from an emission end, an actuator configured to cause the emission end to swing, a protection pipe with the emission optical fiber and the actuator attached inside, and a light receiving portion positioned at a distal end portion; an insertion guide configured to guide insertion of the scanning type endoscope into the object along a guide wall; and a holding member arranged between the scanning type endoscope and the guide wall and configured to hold the scanning type endoscope so that a position of the scanning type endoscope is not displaced by swinging of the emission optical fiber.

公开(公告)号：US10568495B2

公开(公告)日：2020-02-25

申请号：US15846537

申请日：2017-12-19

Applicant: OLYMPUS CORPORATION

Inventor： Masashi Yamada ,  Atsuyoshi Shimamoto ,  Mitsuru Namiki ,  Keiichiro Nakajima ,  Takamitsu Sakamoto ,  Mikihiko Terashima ,  Yoko Okabe ,  Yu Kondo

IPC: A61B1/04 ,  A61B1/07 ,  H04N5/235 ,  G02B23/24 ,  G02B26/10 ,  A61B1/00 ,  A61B1/06 ,  H04N9/04 ,  A61B1/317 ,  H04N5/225 ,  H04N5/33

Abstract: Provided is a scanning endoscope system including: an illumination-light emitting portion that is inserted into a body of a patient and that emits illumination light emitted from a light-source portion toward an imaging subject in the body in a spot-like manner; a light scanner that scans the illumination light on the imaging subject; and a light detector that is disposed at a body surface of the patient, and that detects reflected light coming from the scanning position in the imaging subject, at which the illumination light is scanned by the light scanner.

公开(公告)号：US10359625B2

公开(公告)日：2019-07-23

申请号：US15708781

申请日：2017-09-19

Applicant: OLYMPUS CORPORATION

Inventor： Atsuyoshi Shimamoto

IPC: G02B26/10 ,  G02B23/24 ,  A61B1/00

Abstract: A method and an apparatus for setting driving conditions applied in an optical scanning apparatus. The method for setting driving conditions includes attaching a scanning pattern detector and adjusting a scanning pattern detected by the scanning pattern detector by changing a drive signal applied to an actuator (steps S03 to S06). The step of adjusting includes setting a first drive signal value of the drive signal applied to the actuator and a target amplitude of the scanning pattern (step S03) and determining a frequency of the drive signal applied to the actuator by comparing an amplitude of the scanning pattern detected by changing the frequency of the drive signal applied to the actuator with the target amplitude while vibrating the actuator at the first drive signal value (step S04).

公开(公告)号：US10126121B2

公开(公告)日：2018-11-13

申请号：US15789390

申请日：2017-10-20

Applicant: OLYMPUS CORPORATION

Inventor： Masashi Yamada ,  Atsuyoshi Shimamoto ,  Soichiro Koshika

IPC: G01B11/26 ,  G01M11/00 ,  G02B23/26 ,  G02B26/10 ,  G02B23/24 ,  A61B1/00

Abstract: A method of measuring scanning characteristics of an optical scanning apparatus allows measurement of scanning characteristics of an actuator. The method includes bringing a tip of the optical scanning apparatus and a chart for measuring scanning characteristics closer together and irradiating illumination light with the actuator in a non-driven state, separating the tip and the chart for measuring scanning characteristics by a predetermined distance while maintaining the relative orientations thereof, and adjusting a drive signal of the actuator so that a scanning area of the illumination light on the chart for measuring scanning characteristics can form a desired shape. At least one of an angle of deviation and a viewing angle is measured using an irradiation position of the illumination light on the chart for measuring scanning characteristics.

公开(公告)号：US09766451B2

公开(公告)日：2017-09-19

申请号：US15238848

申请日：2016-08-17

Applicant: OLYMPUS CORPORATION

Inventor： Atsuyoshi Shimamoto

IPC: G02B6/26 ,  G02B26/10 ,  G02B23/24 ,  G02B23/26 ,  A61B1/00 ,  A61B1/07 ,  H02N2/00

CPC classification number: G02B26/103 ,  A61B1/00006 ,  A61B1/00172 ,  A61B1/07 ,  G02B23/2469 ,  G02B23/26 ,  H02N2/008

Abstract: Provided is a method for calculating a scanning pattern of light and an optical scanning apparatus. The method includes the steps of: detecting a resonance frequency and an attenuation coefficient of an oscillation part of an optical fiber which guides light from a light source and irradiates an object with the light; and calculating a scanning pattern of the light, based on the detected resonance frequency and attenuation coefficient. The apparatus includes: an optical fiber which guides light from a light source and irradiates an object with the light; a scanning part which drives an oscillation part oscillatably supported of the optical fiber; a detector which detects a resonance frequency of the oscillation part; a calculation part which determines an irradiation position of the light using a scanning pattern calculated based on the resonance frequency detected by the detector and the attenuation coefficient obtained in advance.

公开(公告)号：US09651774B2

公开(公告)日：2017-05-16

申请号：US14340740

申请日：2014-07-25

Applicant: OLYMPUS CORPORATION

Inventor： Masato Fujiwara ,  Atsuyoshi Shimamoto ,  Junichi Nishimura

IPC: G02B26/10 ,  G02B23/26 ,  G02B23/24 ,  A61B1/00 ,  G01J1/42 ,  A61B1/06 ,  H04N5/235

CPC classification number: G02B26/10 ,  A61B1/00006 ,  A61B1/00172 ,  A61B1/063 ,  G01J1/4257 ,  G02B23/2469 ,  G02B23/26 ,  G02B26/103 ,  H04N5/2354

Abstract: Provided is an optical scanning observation apparatus including: a light source unit (30) for outputting laser light; a scanning part (23) for scanning, on an object of observation (70), a condensing position of the laser light output from the light source; and a detection unit (40) for sampling signal light obtained through scanning of the laser light, and converting the signal light into an electric signal, in which a sampling time for detecting signal light per one sampling is varied in accordance with changes in scanning rate of the scanning part (24) scanning on the object of observation (70). In this manner, variation in resolution of an image resulting from changes in scanning rate per each sampling can be reduced.