公开(公告)号：US12078796B2

公开(公告)日：2024-09-03

申请号：US17315439

申请日：2021-05-10

Applicant: OLYMPUS CORPORATION

Inventor： Takeshi Ito ,  Satoshi Tanaka ,  Koichiro Ito

IPC: G02B23/24 ,  A61B1/00 ,  A61B1/06 ,  G02B26/00

CPC classification number: G02B23/2469 ,  A61B1/00057 ,  A61B1/0655 ,  G02B23/2484 ,  G02B26/007

Abstract: An endoscope light source device includes a light source device and a light source controller. A first light and a second light are narrow band light in a blue region. A third light is in a green region. A fourth light is in a red region. A first light amount ratio is a ratio of a sum of the light amounts of the first light and the second light, the light amount of the third light, and the light amount of the fourth light. A second light amount ratio is a light amount ratio of the first light and the second light. The light source controller adjusts the light amount ratio of the first light and the second light to achieve the second light amount ratio so as to adjust the color representation from a yellow region to a red region in an image of an object.

公开(公告)号：US11910106B2

公开(公告)日：2024-02-20

申请号：US18358187

申请日：2023-07-25

Applicant: OLYMPUS CORPORATION

Inventor： Hiroyuki Kamee ,  Takeshi Ito ,  Masahiro Nishio ,  Satoshi Tanaka

IPC: H04N25/11 ,  H04N23/10 ,  H04N23/56 ,  H04N23/50 ,  H04N23/55 ,  G02B23/24

CPC classification number: H04N25/11 ,  G02B23/2461 ,  H04N23/10 ,  H04N23/55 ,  H04N23/555 ,  H04N23/56

Abstract: A light source device includes a plurality of light emitters, an optical system configured to combine light from the light emitters, a wavelength selective filter located on an optical path of the optical system, and an optical sensor configured to receive light from one light emitter among the light emitters through an optical filter. The optical filter has a wavelength selection characteristic corresponding to a wavelength selection characteristic of the wavelength selective filter.

公开(公告)号：US12064091B2

公开(公告)日：2024-08-20

申请号：US17518994

申请日：2021-11-04

Applicant: OLYMPUS CORPORATION

Inventor： Takayuki Sato ,  Satoshi Tanaka ,  Masahiro Nishio

IPC: A61B1/06 ,  G02B23/24

CPC classification number: A61B1/0655 ,  A61B1/0661 ,  G02B23/2461 ,  G02B23/2484 ,  G02B23/2492

Abstract: An imaging system includes a lighting controller for independently controlling emission of illumination light to be emitted by a light source in: (i) a non-all-line exposure period, which contains a reading period in which electrical signals are sequentially read out on a horizontal-line basis from an image sensor for one frame or one field period, and in which at least one horizontal line of the horizontal lines for the one frame or the one field period is not exposed to light, and (ii) in an all-line exposure period, in which all of the horizontal lines for the one frame or the one field period are exposed to light.

公开(公告)号：US10939811B2

公开(公告)日：2021-03-09

申请号：US15951238

申请日：2018-04-12

Applicant: OLYMPUS CORPORATION

Inventor： Yusuke Yabe ,  Satoshi Tanaka ,  Tomoya Takahashi ,  Masaaki Watanabe ,  Susumu Hashimoto ,  Yasuo Komatsu ,  Manabu Yajima ,  Akihiko Mochida ,  Koji Omori

IPC: A61B1/06 ,  A61B1/05 ,  A61B1/07 ,  G02B23/24 ,  A61B1/04

Abstract: A light source device for endoscope includes a rotational body configured to rotate with a rotational axis as a center; a fluorescent body arranged in a predetermined area of the rotational body and configured to generate fluorescence by excitation light being radiated; an illuminating portion capable of selectively radiating excitation light of a first quantity and excitation light of a second quantity which is larger than the first quantity to a fluorescent body; and a control portion configured to switch between a first state of radiating the excitation light of the first quantity to the fluorescent body arranged in a first area and a second state of radiating the excitation light of the second quantity to the fluorescent body arranged in a second area.

公开(公告)号：US10225446B2

公开(公告)日：2019-03-05

申请号：US15368580

申请日：2016-12-03

Applicant: OLYMPUS CORPORATION

Inventor： Aiko Sakai ,  Yusuke Yabe ,  Tomoya Takahashi ,  Satoshi Tanaka ,  Kotaro Ogasawara ,  Susumu Hashimoto

IPC: H04N5/225 ,  A61B1/00 ,  A61B1/06 ,  G02B23/26 ,  G02B23/24

Abstract: An image pickup system includes an optical sensor configured to pick up an optical image of an object illuminated with light of a plurality of colors emitted from a plurality of semiconductor light emitting elements with an image pickup device and detect each of light amounts of the light emitted from the plurality of semiconductor light emitting elements, and a controller including hardware. The controller adjusts color balance based on the light amounts of the plurality of colors detected at the optical sensor and sets an exposure timing of a light amount detecting unit according to image pickup operation of the image pickup device.

公开(公告)号：US12105275B2

公开(公告)日：2024-10-01

申请号：US17209478

申请日：2021-03-23

Applicant: OLYMPUS CORPORATION

Inventor： Takahiro Masaki ,  Masahiro Nishio ,  Susumu Hashimoto ,  Satoshi Tanaka ,  Takeshi Ito

IPC: A61B1/06 ,  G02B23/24 ,  G02B23/26 ,  H05B47/14

CPC classification number: G02B23/2461 ,  G02B23/2484 ,  H05B47/14 ,  A61B1/0661

Abstract: A light source device includes a semiconductor light source that radiates light at a light quantity according to an applied current, a circuit that determines a current instruction value based on control information, first and second drive units, each of the units that is connected to the semiconductor light source and the circuit, and is capable of outputting, to the semiconductor light source, a current having magnitude corresponding to the current instruction value. The control information is set based on brightness of an image captured by an imaging element. When one of the first and second drive units is switched to the other, the circuit causes the other to start the current output after an elapse of a predetermined stop time period having a length at a predetermined ratio or less to a frame rate on the imaging element since a stop of the current output from the one.

公开(公告)号：US12035892B2

公开(公告)日：2024-07-16

申请号：US16950372

申请日：2020-11-17

Applicant: OLYMPUS CORPORATION

Inventor： Satoshi Tanaka ,  Yoichiro Sakanoue ,  Noriko Kohira

IPC: A61B1/05 ,  A61B1/00 ,  A61B1/06 ,  H04N23/71 ,  H04N23/74

CPC classification number: A61B1/05 ,  A61B1/00006 ,  A61B1/00009 ,  A61B1/00045 ,  A61B1/0655 ,  A61B1/0684 ,  H04N23/71 ,  H04N23/74

Abstract: An endoscope system includes: a light source including one or more semiconductor light sources; an image pickup apparatus configured to pick up an image of the object irradiated with the illumination light to obtain the image; and a processor. The processor is configured to detect brightness of the image, to change one of a current value and an application period of a current applied to the semiconductor light source when the brightness of the image belongs to a first brightness range, to change the brightness of the image by predetermined processing, to which the image is subjected, when the brightness of the image belongs to a second brightness range, and to change the other of the current value and the application period of the current applied to the semiconductor light source when the brightness of the image belongs to a third brightness range.

公开(公告)号：US11337593B2

公开(公告)日：2022-05-24

申请号：US16130007

申请日：2018-09-13

Applicant: OLYMPUS CORPORATION

Inventor： Satoshi Tanaka ,  Yoichiro Sakanoue

IPC: A61B1/04 ,  H04N7/18 ,  A61B1/06 ,  A61B1/00 ,  G02B23/24 ,  G02B23/26

Abstract: An endoscope apparatus includes a light emitting element, an image pickup device of a rolling shutter scheme, and a control section. The control section performs control for switching between a first illumination mode for irradiating light on a subject in a readout period in which readout of an electric signal is performed in order for each of lines in the image pickup device and a second illumination mode for not irradiating light on the subject in the readout period. The control section controls the image pickup device to perform electronic shutter processing in all-line exposure period in which exposure of a plurality of lines is simultaneously performed in a frame corresponding to timing when one of the first illumination mode and the second illumination mode is switched to the other illumination mode.

公开(公告)号：US10349027B2

公开(公告)日：2019-07-09

申请号：US15452984

申请日：2017-03-08

Applicant: OLYMPUS CORPORATION

Inventor： Satoshi Tanaka ,  Kentaro Hase ,  Kotaro Ogasawara

IPC: H04N9/73 ,  A61B1/04 ,  A61B1/06 ,  G02B23/26 ,  G03B15/02 ,  G03B15/05 ,  H04N9/04 ,  G02B23/24 ,  H04N5/225

Abstract: An imaging device includes: an imaging unit configured to output an imaging signal; an illumination unit configured to emit respective beams of light of a plurality of colors; a color separation unit configured to separate the imaging signal into a plurality of signals corresponding to the plurality of colors; an interest color setting unit configured to set a color corresponding to a wavelength band of interest as an interest color; a comparison unit configured to compute a ratio between a detection value of a signal corresponding to an interest color set by the interest color setting unit and a detection value of a signal of another color corresponding to a wavelength band different from the wavelength band corresponding to the interest color; and a changing unit configured to change a light emission ratio between light corresponding to the interest color and light of the other color.

公开(公告)号：US10834791B2

公开(公告)日：2020-11-10

申请号：US16357661

申请日：2019-03-19

Applicant: OLYMPUS CORPORATION

Inventor： Satoshi Tanaka

IPC: H05B45/22 ,  A61B1/06 ,  G02B23/24 ,  G06T11/00 ,  A61B1/00

Abstract: A light source device includes: a first light emitting element configured to generate first light having intensity in a first wavelength band and having a first optical spectrum; a second light emitting element configured to generate second light having intensity in a second wavelength band adjoining to the first wavelength band and having a second optical spectrum overlapping with a part of the first optical spectrum; and a processor configured to, at a time of causing the first light emitting element and the second light emitting element to simultaneously perform light emission, cause the first light to be generated with a light amount adjusted according to a first mixed light amount which is a light amount of the second light mixed in the first wavelength band.