-
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
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：US09977236B2
公开(公告)日：2018-05-22
申请号：US15655350
申请日：2017-07-20
Applicant: OLYMPUS CORPORATION
Inventor： Junichi Nishimura
CPC classification number: G02B26/101 , A61B1/00165 , A61B1/00172 , G02B23/2469 , G02B23/26 , G02B26/103
Abstract: This optical scanning method yields a high quality image. An emission end of an optical fiber is displaced two-dimensionally to scan light emitted from the optical fiber, the emission end being displaced with an optical scanning actuator that includes a first driver and a second driver for driving the emission end in different directions. A circular scanning area is scanned by controlling, with a driver controller, a first drive signal supplied to the first driver and a second drive signal supplied to the second driver so as to rotate a scanning pattern of the light while causing the scanning pattern to reciprocate repeatedly in a nearly parallel manner with constant length.
-
Patent Agency Ranking
公开(公告)号：US09335208B2
公开(公告)日：2016-05-10
申请号：US14296828
申请日：2014-06-05
Applicant: OLYMPUS CORPORATION
Inventor： Junichi Nishimura
CPC classification number: G01J1/0403 , A61B1/00009 , A61B1/00096 , A61B1/00172 , A61B1/045 , A61B1/07 , G01J1/0425 , G01J1/08
Abstract: There is provided a scanning endoscope including an optical scanning unit in which an angle at which illumination light is emitted from a leading edge of an insertion portion is changed to scan the emitted illumination light on an object, a plurality of light receiving portions which is circumferentially spaced apart at the leading edge of the insertion portion and receives return light returning from the object as a result of the optical scanning unit scanning the illumination light, a light detection unit that detects the intensity of the received return light, a return light selection unit that selects the return light whose intensity is equal to or smaller than a predetermined threshold, and a storage unit that stores the intensity of the return light selected by the return light selection unit in association with the position where the optical scanning unit scans the illumination light.
Abstract translation: 提供了一种扫描内窥镜，其包括光学扫描单元，其中从插入部分的前缘发射照明光的角度被改变以扫描物体上发射的照明光，多个光接收部分 在插入部分的前缘处间隔开，并且由于光扫描单元扫描照明光而接收从物体返回的返回光，检测接收到的返回光的强度的光检测单元，返回光选择单元 其选择强度等于或小于预定阈值的返回光;以及存储单元，其将由返回光选择单元选择的返回光的强度与光学扫描单元扫描照明光的位置相关联地存储 。
-
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
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.
-
公开(公告)号：US10108002B2
公开(公告)日：2018-10-23
申请号：US15191776
申请日：2016-06-24
Applicant: OLYMPUS CORPORATION
Inventor： Junichi Nishimura
Abstract: Provided is an optical scanning image forming apparatus, including: a light source section; an illumination scanning section scanning illumination light from the light source section and irradiating the illumination light onto an object; a light detection section detecting detection light from the object; a calculation section calculating a drive waveform for providing a light scanning pattern to be formed by the illumination scanning section; and a coordinate for image construction; and an image drawing section drawing an image based on the detection light detected by the light detection section and the coordinate for image construction, the drive waveform consisting of, in a predetermined period, a plurality of frames of different phases. Also provided is an optical scanning image forming method.
-
公开(公告)号：US09832435B2
公开(公告)日：2017-11-28
申请号：US15298381
申请日：2016-10-20
Applicant: OLYMPUS CORPORATION
Inventor： Junichi Nishimura
CPC classification number: H04N9/3135 , A61B1/00006 , A61B1/00172 , A61B1/07 , G02B23/24 , G02B23/2469 , G02B23/26 , G02B26/10 , G02B26/103 , H04N9/3155 , H04N9/3185 , H04N9/3194
Abstract: An optical scanning image forming apparatus includes: a light source section; an illumination scanning section; a light detection section; a calculation section calculating a drive waveform for providing a illumination light scanning pattern; and an image drawing section drawing an image, based on detection light detected by the light detection section and image construction coordinates, the calculation section providing different light scanning patterns to the illumination scanning section and calculating distortion correction data, based on comparison between data on the detection lights detected when scanned in the different scanning patterns. An optical scanning image forming method includes: providing different light scanning patterns to an illumination scanning section which scans the illumination light from a light source section to irradiate an object with the illumination light; and calculating distortion correction data, based on comparison between data on the detection light detected when scanned in the different scanning patterns.
-
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
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.
-
-
-
-
-
-
Search Results
7
records
(took 0.015 seconds)
