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公开(公告)号：US20210278658A1
公开(公告)日：2021-09-09
申请号：US17315439
申请日：2021-05-10
Applicant: OLYMPUS CORPORATION
Inventor： Takeshi ITO , Satoshi TANAKA , Koichiro ITO
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.
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公开(公告)号：US20190008372A1
公开(公告)日：2019-01-10
申请号：US16130007
申请日：2018-09-13
Applicant: OLYMPUS CORPORATION
Inventor： Satoshi TANAKA , Yoichiro SAKANOUE
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.
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公开(公告)号：US20180042470A1
公开(公告)日：2018-02-15
申请号：US15730091
申请日：2017-10-11
Applicant: OLYMPUS CORPORATION
Inventor： Satoshi TANAKA , Yusuke YABE , Tomoya TAKAHASHI , Masaaki WATANABE , Susumu HASHIMOTO , Yasuo KOMATSU , Manabu YAJIMA , Akihiko MOCHIDA , Koji OMORI
CPC classification number: A61B1/0676 , A61B1/00096 , A61B1/06 , A61B1/0638 , A61B1/0669 , G02B23/24 , G02B23/2461 , G02B23/2484
Abstract: A light source device for endoscope includes: an irradiation portion capable of radiating excitation light; a rotating body provided on an optical axis of the excitation light and configured to rotate with a rotating shaft as a center; a phosphor arranged in an irradiation area of the excitation light, and configured to generate fluorescence by being irradiated with the excitation light; a light quantity control portion configured to control irradiation intensity or irradiation time of the excitation light; and a rotation control portion configured to rotate the rotating body at a predetermined speed when the excitation light is radiated with a first irradiation intensity or time and rotate the rotating body faster than the predetermined speed when reducing the irradiation intensity or the irradiation time of the excitation light is reduced in the irradiation intensity or time vis-a-vis the first ones.
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公开(公告)号：US20210208384A1
公开(公告)日：2021-07-08
申请号：US17209478
申请日：2021-03-23
Applicant: OLYMPUS CORPORATION
Inventor： Takahiro MASAKI , Masahiro NISHIO , Susumu HASHIMOTO , Satoshi TANAKA , Takeshi ITO
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.
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公开(公告)号：US20190117041A1
公开(公告)日：2019-04-25
申请号：US16230034
申请日：2018-12-21
Applicant: OLYMPUS CORPORATION
Inventor： Satoshi TANAKA , Yoichiro SAKANOUE
Abstract: A processor includes: a table configured to retain first control parameter information for controlling operations of a light source section; a reading circuit configured to read information stored in a memory from an endoscope including the memory that is capable of storing second control parameter information for controlling the operations of the light source section or the like; and a determination circuit configured to determine whether or not the reading circuit can read the second control parameter information. When it is determined that the second control parameter information can be read, the second control parameter information read by the reading circuit is outputted. When it is determined that the second control parameter information cannot be read, the first control parameter information retained by the table is outputted.
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Patent Agency Ranking
公开(公告)号：US20170208236A1
公开(公告)日：2017-07-20
申请号：US15478616
申请日：2017-04-04
Applicant: OLYMPUS CORPORATION
Inventor： Yusuke YABE , Tomoya TAKAHASHI , Satoshi TANAKA
CPC classification number: H04N5/2353 , A61B1/00009 , A61B1/00045 , A61B1/045 , A61B1/051 , A61B1/0638 , A61B1/0676 , A61B1/0684 , G02B23/2461 , H04N5/2256 , H04N5/2351 , H04N5/378 , H04N9/045 , H04N2005/2255
Abstract: An image pickup system includes a light source apparatus and a light-source control section performing first control for setting a duty width and perform second control for, after the duty width is set to a minimum duty width by the first control, changing supply timing of the illumination light not to supply the illumination light in a period other than the period where the light amount control by the PWM is permitted and to supply, in the period where the light amount control by the PWM is permitted, light having a light amount integrated value equal to a light amount integrated value supplied in the period other than the period where the light amount control by the PWM is permitted, and an image pickup apparatus, where data representing a driving current value after the change of the supply timing and a value of the pulse width is stored.
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公开(公告)号：US20230370732A1
公开(公告)日：2023-11-16
申请号：US18358187
申请日：2023-07-25
Applicant: OLYMPUS CORPORATION
Inventor： Hiroyuki KAMEE , Takeshi ITO , Masahiro NISHIO , Satoshi TANAKA
CPC classification number: H04N25/11 , H04N23/555 , H04N23/10 , H04N23/55 , H04N23/56 , G02B23/2461
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.
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公开(公告)号：US20170280037A1
公开(公告)日：2017-09-28
申请号：US15618505
申请日：2017-06-09
Applicant: OLYMPUS CORPORATION
Inventor： Aiko SAKAI , Satoshi TANAKA
CPC classification number: H04N5/2353 , A61B1/00 , A61B1/00006 , A61B1/00009 , A61B1/04 , A61B1/045 , A61B1/06 , A61B1/0638 , A61B1/0669 , A61B1/07 , A61B5/0086 , G02B23/24 , G03B7/093 , G03B15/03 , H04N5/2256 , H04N5/23245 , H04N5/2354 , H04N5/33 , H04N2005/2255
Abstract: An imaging system includes: an imaging device including an image sensor provided with an electronic shutter function, the imaging device being configured to capture a subject; a light source configured to emit illumination light for illuminating the subject; an identification unit configured to identify which one of a first light source and a second light source configured to emit light having a wavelength bandwidth different from a wavelength bandwidth of the first light source is employed as the light source used for observation; an electronic shutter controller configured to control the electronic shutter function of the image sensor based on a control pattern according to the classification of the light source identified by the identification unit; and an electronic shutter control pattern setting unit configured to set a control pattern of the electronic shutter function in accordance with the classification of the light source identified by the identification unit.
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公开(公告)号：US20170202441A1
公开(公告)日：2017-07-20
申请号：US15474172
申请日：2017-03-30
Applicant: OLYMPUS CORPORATION
Inventor： Masakazu MIZOGUCHI , Satoshi TANAKA
CPC classification number: A61B1/045 , A61B1/00006 , A61B1/00009 , A61B1/00193 , A61B1/0661 , G01B11/00 , G01J1/4209 , G01J1/4228 , G02B23/2415 , G02B23/2484 , G03B7/17 , G03B35/10 , G03B37/005 , H04N5/2351 , H04N5/2353 , H04N5/238 , H04N13/239 , H04N13/254 , H04N13/289 , H04N13/296 , H04N2005/2255
Abstract: An image pickup system includes a stereoscopic endoscope including image pickup optical systems having a parallax therebetween and a first image pickup device and a second image pickup device, and a processor including a first photometric measurement section configured to photometrically measure a luminance value of a first image pickup signal related to the first image pickup device, a second photometric measurement section configured to measure a luminance value of a second image pickup signal related to the second image pickup device, and a control section including a threshold value comparison section configured to compare the luminance value with a threshold value. When the luminance value of either one of the first image pickup signal and the second image pickup signal exceeds the threshold value, the image pickup system performs light adjustment control of a light source based on a photometric value of the other image pickup signal.
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公开(公告)号：US20170202431A1
公开(公告)日：2017-07-20
申请号：US15473927
申请日：2017-03-30
Applicant: OLYMPUS CORPORATION
Inventor： Satoshi TANAKA , Tomoya TAKAHASHI , Takahiro MASAKI , Kazue HONGO
CPC classification number: A61B1/00006 , A61B1/00009 , A61B1/00114 , A61B1/04 , A61B1/06 , A61B1/0684 , G02B23/243 , G02B23/2461 , G02B23/2484 , G02B23/26
Abstract: An endoscope apparatus includes: a first semiconductor light-emitting element; a light source drive section; a first detection section; a storage section configured to store a threshold value indicating whether or not the first detection section can correctly detect an intensity; and a control section configured to, if the intensity detected by the first detection section exceeds the threshold value stored in the storage section, control the current value of the drive signal based on the intensity detected by the first detection section, for the light source drive section, and if the intensity detected by the first detection section does not exceed the threshold value, perform control so as to make the current value of the drive signal constant to provide pulsed light emission and change a duty cycle or a number of pulses to perform light adjustment, for the light source drive section.
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