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公开(公告)号：US20190335986A1
公开(公告)日：2019-11-07
申请号：US16516485
申请日：2019-07-19
Applicant: OLYMPUS CORPORATION
Inventor： Atsuyoshi SHIMAMOTO , Keiichiro NAKAJIMA , Masashi YAMADA , Takamitsu SAKAMOTO , Mitsuru NAMIKI , Mikihiko TERASHIMA
Abstract: An optical-scanning-type observation probe is provided with: an imaging optical system that illumination light scanned by an optical scanner enters and that focuses the illumination light in the form of a spot, multiple times; a projection optical system that emits illumination light coming from a focus position focused by the imaging optical system, toward a subject in the form of a spot; and a light-receiver that is provided independently of the imaging optical system and the projection optical system and that receives reflected light of the illumination light, the reflected light coming from the subject, via a light path different from that of the imaging optical system and the projection optical system.
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公开(公告)号：US20180196250A1
公开(公告)日：2018-07-12
申请号：US15910071
申请日：2018-03-02
Applicant: OLYMPUS CORPORATION
Inventor： Atsuyoshi SHIMAMOTO
CPC classification number: G02B23/2469 , A61B1/00006 , A61B1/00165 , A61B1/00172 , G02B23/26 , G02B26/103 , H04N3/30 , H04N5/2256 , H04N2005/2255
Abstract: A light-scanning apparatus according to the present invention is provided with: an optical fiber; a signal-generating portion that generates a driving signal that has a frequency fd different from a resonant frequency fr of the optical fiber; and a driving portion that causes a distal end of the optical fiber to undergo spiral oscillations in accordance with the driving signal, wherein the signal-generating portion generates the driving signal that includes, during one scanning period, a first period in which an amplitude gradually increases from substantially zero to a maximum value and a second period in which the amplitude gradually decreases from the maximum value to substantially zero, and that satisfies conditional expression (1) below. N2 is the number of oscillations of the driving signal in the second period. { Eq . 1 } 2 ≥ 1 N 2 2 · 12 ( fd fr - 0.999 ) 2 ( when fd fr > 1 ) ( 1 )
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公开(公告)号：US20180191926A1
公开(公告)日：2018-07-05
申请号：US15910088
申请日：2018-03-02
Applicant: OLYMPUS CORPORATION
Inventor： Atsuyoshi SHIMAMOTO
CPC classification number: H04N3/34 , A61B1/00006 , A61B1/00172 , A61B1/043 , A61B1/07 , G02B23/2469 , G02B23/26 , G02B26/103 , H04N2005/2255
Abstract: An optical scanning apparatus includes an optical fiber that emits illumination light from a distal end thereof toward a subject, an actuator that oscillates the distal end of the optical fiber, and a controller that controls the actuator so as to two-dimensionally scan the illumination light on the subject and so as to satisfy Conditional Expression of P1≤0.5×D, where D is a spot diameter of the illumination light on the subject, and P1 is a scanning-line pitch of the illumination light on the subject.
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公开(公告)号：US20160025966A1
公开(公告)日：2016-01-28
申请号：US14812176
申请日：2015-07-29
Applicant: OLYMPUS CORPORATION
Inventor： Atsuyoshi SHIMAMOTO , Mitsuru NAMIKI
CPC classification number: G02B26/103 , A61B1/0008 , A61B1/00172 , A61B1/07 , G02B6/3636 , G02B23/2469 , G02B23/26 , G02B26/101 , G02B27/0025
Abstract: An optical scanning apparatus, including: an optical fiber (11); a holding unit (29) for holding an emission end (11a) of the optical fiber (11) in an oscillatable manner; and a driving unit (28a to 28d) for driving the emission end (11a), in which the holding unit (29) has a holding structure that is different between the vibration direction caused by the driving unit (28a to 28d)/a direction orthogonal to the vibration direction, and other directions.
Abstract translation: 一种光学扫描装置，包括：光纤（11）; 用于以可振荡的方式保持光纤（11）的发射端（11a）的保持单元（29）; 以及用于驱动发射端（11a）的驱动单元（28a至28d），其中保持单元（29）具有由驱动单元（28a至28d）引起的振动方向不同的保持结构/ 与振动方向正交等方向。
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公开(公告)号：US20210161364A1
公开(公告)日：2021-06-03
申请号：US17154083
申请日：2021-01-21
Applicant: OLYMPUS CORPORATION
Inventor： Ikutoshi FUKUSHIMA , Junichi NISHIMURA , Atsuyoshi SHIMAMOTO , Mitsuru NAMIKI
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.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20180003954A1
公开(公告)日：2018-01-04
申请号：US15708781
申请日：2017-09-19
Applicant: OLYMPUS CORPORATION
Inventor： Atsuyoshi SHIMAMOTO
CPC classification number: G02B26/103 , A61B1/00006 , A61B1/00172 , G02B23/2469 , G02B26/101
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).
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7.发明申请公开(公告)号：US20170071455A1
公开(公告)日：2017-03-16
申请号：US15362192
申请日：2016-11-28
Applicant: OLYMPUS CORPORATION
Inventor： Atsuyoshi SHIMAMOTO
CPC classification number: A61B1/00172 , A61B1/00006 , A61B1/00009 , A61B1/00045 , A61B1/00096 , A61B1/00165 , A61B1/05 , A61B1/063 , A61B1/0638 , A61B1/07 , G02B23/2469 , G02B26/103
Abstract: An optical scanning endoscope apparatus includes an optical fiber for illumination, a driver that drives the tip of the optical fiber for illumination in a Lissajous scan pattern, illumination lenses that irradiate an object of observation with irradiation light emitted from the tip of the fiber, a photodetector that detects light obtained from the object of observation by irradiation with the irradiation light and converts the light to an electrical signal, an image processor that generates an image based on the electrical signal output by the photodetector, and a phase adjustor that adjusts the phase of the drive waveform of the driver so as to correct a phase shift between the drive waveform of the tip of the fiber by the driver and the vibration waveform of the tip of the fiber.
Abstract translation: 一种光学扫描内窥镜装置，包括用于照明的光纤，以李萨如扫描图案驱动用于照明的光纤的前端的驱动器，利用从光纤前端照射的照射光照射观察对象的照明透镜， 光检测器，其通过用照射光照射检测从观察对象获得的光并将光转换成电信号;基于由光电检测器输出的电信号产生图像的图像处理器;以及相位调整器，其调整相位 的驱动器的驱动波形，以校正驱动器的光纤尖端的驱动波形与光纤尖端的振动波形之间的相移。
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公开(公告)号：US20140332677A1
公开(公告)日：2014-11-13
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.
Abstract translation: 提供一种光学扫描观察装置，包括：用于输出激光的光源单元（30）; 用于在观察对象（70）上扫描从光源输出的激光的聚光位置的扫描部分（23） 以及检测单元（40），用于对通过扫描激光获得的信号光进行采样，并将信号光转换成电信号，其中每一次采样中检测信号光的采样时间根据扫描速率的变化而变化 的扫描部分（24）扫描观察对象（70）。 以这种方式，可以减少由每个采样的扫描速率的变化引起的图像的分辨率的变化。
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公开(公告)号：US20190004233A1
公开(公告)日：2019-01-03
申请号：US16101551
申请日：2018-08-13
Applicant: OLYMPUS CORPORATION
Inventor： Atsuyoshi SHIMAMOTO , Soichiro KOSHIKA
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.
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公开(公告)号：US20180110402A1
公开(公告)日：2018-04-26
申请号：US15839095
申请日：2017-12-12
Applicant: OLYMPUS CORPORATION
Inventor： Masashi YAMADA , Atsuyoshi SHIMAMOTO , Mitsuru NAMIKI , Keiichiro NAKAJIMA , Takamitsu SAKAMOTO , Mikihiko TERASHIMA , Yoko OKABE
CPC classification number: A61B1/00009 , A61B1/00096 , A61B1/00172 , A61B1/00193 , A61B1/045 , A61B1/05 , A61B1/063 , A61B1/0638 , A61B1/0669 , A61B1/07 , G02B23/2469 , G02B23/26 , G02B26/103
Abstract: Provided is a scanning endoscope system including an illumination-light emitting unit that outputs illumination light emitted from a light source in a spot-like manner toward a subject, a light scanner that scans the illumination light output from the illumination-light emitting unit over the subject, and a light detector that is provided in a movable manner relative to the illumination-light emitting unit and that detects reflection light from a scan position on the subject over which the illumination light is scanned by the light scanner.
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