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公开(公告)号：US10682040B2
公开(公告)日：2020-06-16
申请号：US15342492
申请日：2016-11-03
Applicant: OLYMPUS CORPORATION
Inventor： Keiji Higuchi , Koichiro Yoshino
Abstract: An endoscope apparatus including an imaging section that includes a phase difference detection element for implementing phase detection autofocus, and acquires a captured image; a phase difference calculation section that calculates a phase difference based on a signal output from the phase difference detection element; a lens position selection section that selects a lens position that is either a near point-side lens position or a far point-side lens position based on the phase difference, the near point-side lens position and the far point-side lens position being discrete lens positions set in advance; a driver section that changes a lens position of the imaging section to the lens position selected by the lens position selection section; and a control section that controls an intensity of illumination light that is applied to an object. The lens position selection section determines whether or not the intensity is smaller than a given threshold value when the phase difference calculation section cannot detect the phase difference, selects the near point-side lens position when the lens position selection section has determined that the intensity is smaller than the threshold value, and selects the far point-side lens position when the lens position selection section has determined that the intensity is larger than the threshold value.
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2.发明授权公开(公告)号：US10213093B2
公开(公告)日：2019-02-26
申请号：US15613085
申请日：2017-06-02
Applicant: OLYMPUS CORPORATION
Inventor： Manabu Ichikawa , Toshiaki Mikami , Koichiro Yoshino
IPC: H04N5/225 , H04N5/232 , H04N5/369 , A61B1/00 , A61B1/31 , A61B1/04 , G02B7/34 , A61B1/045 , A61B1/313 , G02B23/24 , G02B23/26
Abstract: A focus control device includes: a processor including hardware, the processor being configured to implement: an area setting process that sets a plurality of areas to a captured image that has been captured by an imaging section, each of the plurality of areas including a plurality of pixels; an object distance information calculation process that calculates distance information about a distance to an object that is captured within each of the plurality of areas; and a focus control process based on the distance information, wherein the processor implements the focus control process that performs a classification process that classifies the plurality of areas into a plurality of groups, and performs the focus control process based on area information about each of the plurality of groups.
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公开(公告)号：US09451876B2
公开(公告)日：2016-09-27
申请号：US14058655
申请日：2013-10-21
Applicant: OLYMPUS CORPORATION
Inventor： Koichiro Yoshino
CPC classification number: A61B1/00188 , A61B1/00009 , A61B1/043 , A61B1/0638
Abstract: An endoscope system includes an in-focus object plane position switch section that switches an in-focus object plane position of an imaging section, a target in-focus position determination section that calculates an in-focus evaluation value, and determines a target in-focus position based on the in-focus evaluation value, and a change-in-scene detection section that detects whether or not a change in scene has occurred based on a captured image. The target in-focus position determination section determines whether or not the in-focus evaluation value satisfies a determination criterion until the change-in-scene detection section detects that the change in scene has occurred, and selects the first in-focus object plane position or the second in-focus object plane position that is not currently selected by the in-focus object plane position switch section when it has been determined that the in-focus evaluation value does not satisfy the determination criterion.
Abstract translation: 一种内窥镜系统，具备切换摄像部的对焦物平面位置的对焦物平面位置切换部，计算对焦评价值的目标对焦位置决定部， 基于对焦评价值的焦点位置，以及基于拍摄图像来检测场景变化是否发生的场景变化部。 目标对焦位置确定部分确定在场景检测部分检测到场景变化已经发生之前，焦点内评估值是否满足确定标准，并且选择第一对焦对象平面位置 或者当已经确定焦点内评估值不满足确定标准时，当前未被对焦物体平面位置切换部分选择的第二对焦物平面位置。
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4.发明授权公开(公告)号：US10517467B2
公开(公告)日：2019-12-31
申请号：US15613092
申请日：2017-06-02
Applicant: OLYMPUS CORPORATION
Inventor： Toshiaki Mikami , Manabu Ichikawa , Koichiro Yoshino
IPC: A61B1/00 , A61B1/045 , A61B1/313 , H04N5/225 , H04N5/232 , G02B7/34 , G02B7/38 , G02B23/24 , G02B23/26
Abstract: A focus control device includes a processor including hardware, the processor being configured to implement: an area setting process that sets a plurality of areas to a captured image that has been captured by an imaging section, each of the plurality of areas including a plurality of pixels; a direction determination process that determines whether a target in-focus position lies in a NEAR direction or a FAR direction with respect to a reference position with respect to some or all of the plurality of areas set to the captured image to calculate a direction determination result with respect to each of the plurality of areas, the target in-focus position being a target of an in-focus object plane position; and a focus control process that preferentially brings an area among the plurality of areas that is situated away from the imaging section into focus based on the direction determination result.
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公开(公告)号：US10456021B2
公开(公告)日：2019-10-29
申请号：US15964383
申请日：2018-04-27
Applicant: OLYMPUS CORPORATION
Inventor： Yuichi Shiga , Toshiaki Mikami , Koichiro Yoshino , Satoshi Takekoshi
IPC: A61B1/045 , A61B1/00 , H04N5/232 , A61B1/04 , H04N5/235 , H04N9/04 , A61B1/055 , H04N5/225 , H04N9/73
Abstract: An endoscope apparatus includes an optical system including a focus lens, a connector to which an interchangeable optical system is connected, an image sensor configured to output a captured image based on the optical system and the interchangeable optical system, and a processor including hardware. The processor performs a determination process of determining whether the interchangeable optical system is a known or unknown optical system, implements a first step amount determination process when the interchangeable optical system is determined to be a known optical system, and implements a second step amount determination process when the interchangeable optical system is determined to be an unknown optical system and controls the focus lens based on step amount information determined.
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Patent Agency Ranking
公开(公告)号：US10771676B2
公开(公告)日：2020-09-08
申请号：US16030165
申请日：2018-07-09
Applicant: OLYMPUS CORPORATION
Inventor： Koichiro Yoshino
Abstract: A focus control device includes a region setting section 2010 that sets a plurality of regions, each including a plurality of pixels, to an image acquired by an imaging section 200, an AF evaluation value calculation section 2020 that calculates an AF evaluation value of each of the plurality of regions, an invalid region setting section (invalid block setting section 2050) that sets an invalid region (low contrast determination invalid block) in the plurality of regions, a low contrast state determination section 2075 that determines whether or not the target subject is in a low contrast state based on the AF evaluation value of a region, in the plurality of regions, other than the invalid region, and a focus control section 2000 that controls an in-focus object plane position based on the AF evaluation value. The focus control section 2000 is configured to implement the focus control varying depending on a determination result obtained by the low contrast state determination section 2075.
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公开(公告)号：US10587793B2
公开(公告)日：2020-03-10
申请号：US15705329
申请日：2017-09-15
Applicant: OLYMPUS CORPORATION
Inventor： Koichiro Yoshino
IPC: H04N5/232 , H04N5/235 , H04N5/225 , A61B1/06 , A61B1/04 , A61B1/00 , G03B13/36 , G02B7/36 , G02B7/28 , G02B23/24 , G02B7/38
Abstract: A focus control device includes a processor including hardware, the processor being configured to implement: an area setting process that sets a plurality of areas, each including a plurality of pixels, on a captured image acquired by an imaging section, an evaluation value calculation process that calculates an AF (Autofocus) evaluation value for each of the plurality of set areas, a bright spot influence rate calculation process that calculates a bright spot influence rate for each of the plurality of set areas, based on whether or not the area includes a high luminance portion determined to have a size equal to or larger than a given size, and focus control based on the AF evaluation value and the bright spot influence rate.
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公开(公告)号：US10129454B2
公开(公告)日：2018-11-13
申请号：US14229168
申请日：2014-03-28
Applicant: OLYMPUS CORPORATION
Inventor： Koichiro Yoshino
Abstract: The imaging device includes an imaging optical system that includes a movable lens that simultaneously adjusts the angle of view and the in-focus object distance, an image sensor, a plurality of phase sensors, an acquisition section (A/D conversion section) that acquires phase information from the plurality of phase sensors, a lens control section that controls the position of the movable lens, and a moving amount calculation section that calculates the moving amount of the movable lens necessary for implementing an in-focus state of an image formed on the image sensor due to light beams that have passed through the imaging optical system, based on a phase difference that is based on the phase information, the lens control section controlling the position of the movable lens based on the moving amount calculated by the moving amount calculation section.
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公开(公告)号：US09516999B2
公开(公告)日：2016-12-13
申请号：US13953519
申请日：2013-07-29
Applicant: OLYMPUS CORPORATION
Inventor： Keiji Higuchi , Koichiro Yoshino
CPC classification number: A61B1/00096 , A61B1/00006 , A61B1/00009 , A61B1/00188 , A61B1/04 , A61B1/06 , G02B7/09 , G02B7/34 , G02B23/243 , H04N5/2256 , H04N2005/2255
Abstract: An endoscope apparatus includes an imaging section that includes a phase difference detection element for implementing phase detection autofocus, and acquires a captured image, a phase difference calculation section that calculates a phase difference based on a signal output from the phase difference detection element, a lens position selection section that selects a lens position that is either a near point-side lens position or a far point-side lens position based on the phase difference, the near point-side lens position and the far point-side lens position being discrete lens positions set in advance, and a driver section that changes a lens position of the imaging section to the lens position selected by the lens position selection section.
Abstract translation: 一种内窥镜装置，包括：成像部，其具有用于实现相位检测自动聚焦的相位差检测元件，并获取拍摄图像;相位差计算部，其基于从所述相位差检测元件输出的信号计算相位差;透镜 位置选择部，其基于相位差选择作为近点侧透镜位置或远点侧透镜位置的透镜位置，近点侧透镜位置和远点侧透镜位置为离散透镜 预先设定的位置，以及将摄像部的镜头位置变更为透镜位置选择部所选择的镜头位置的驱动部。
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公开(公告)号：US09485405B2
公开(公告)日：2016-11-01
申请号：US14145184
申请日：2013-12-31
Applicant: OLYMPUS CORPORATION
Inventor： Koichiro Yoshino , Keiji Higuchi
CPC classification number: H04N5/23212 , A61B1/00188 , A61B1/05 , G02B7/102 , G02B23/2438 , G02B23/2469 , G03B13/36 , H04N5/23296 , H04N7/183 , H04N2005/2255
Abstract: A focus control device in an endoscope system, implements an autofocus operation in an appropriate state by setting a focus mode of an imaging optical system. The focus control device includes a focus control section that controls a focus of an imaging optical system that includes at least a zoom lens that adjusts an optical magnification, and sets a focus mode of the imaging optical system, and an image acquisition section that acquires an image through the imaging optical system, the focus mode including a fixed focus mode and an autofocus (AF) mode, and the focus control section switching the focus mode between the fixed focus mode and the AF mode corresponding to whether the zoom lens is positioned on a wide-angle side or a telescopic side relative to a reference point that is situated between a wide-angle end and a telescopic end.
Abstract translation: 内窥镜系统中的聚焦控制装置，通过设定成像光学系统的聚焦模式，在适当的状态下进行自动聚焦操作。 焦点控制装置包括：焦点控制部，其控制成像光学系统的焦点，该成像光学系统至少包括调整光学倍率的变焦镜头，并且设定成像光学系统的聚焦模式;以及图像获取部， 通过成像光学系统的图像，聚焦模式包括固定对焦模式和自动对焦（AF）模式，并且聚焦控制部分在对焦于变焦镜头位于的固定对焦模式和AF模式之间切换对焦模式 相对于参考点的广角侧或伸缩侧，其位于广角端和伸缩端之间。
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