Patents by Inventor Atsushi Yonetani
Atsushi Yonetani has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11016281Abstract: An imaging optical system includes an objective, an image-formation optical system, and an image sensor, wherein an object, the objective, the image-formation optical system, and the image sensor are arranged in this order, the objective includes: a first lens group that includes a meniscus lens component that is the closest to an image among the first lens group, the meniscus lens component having a convex surface facing the object; and a second lens group that is closer to the image than the first lens group is, and the imaging optical system satisfies the following conditional expression: 4×106??PXn?1×1010??(1) where PXn indicates the number of pixels included in a region on the image sensor in which an MTF specific to an e line is 40% or higher at a spatial frequency of 750×NAi, and NAi indicates the numerical aperture of the image side of the imaging optical system.Type: GrantFiled: April 16, 2019Date of Patent: May 25, 2021Assignee: OLYMPUS CORPORATIONInventors: Kenichiro Abe, Atsushi Yonetani
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Patent number: 10897580Abstract: An observation device 1 includes an imaging optical system 8 that forms an image on the basis of light from sample S, an aperture diaphragm 2 that changes a numerical aperture on an emission side of the imaging optical system 8, a camera 5 that converts the image of the sample into image signals, the image of the sample being formed by the imaging optical system 8, an observation scope changing unit that performs an observation scope changing process in which an observation scope is changed to a specified scope by changing an extraction scope, the extraction scope being a scope from which the image signals obtained by the camera 5 are extracted, a monitor 33 that displays the image signals from the specified scope obtained through the observation scope changing process, and a control unit that controls the aperture diaphragm 2 in accordance with the specified observation scope.Type: GrantFiled: June 6, 2018Date of Patent: January 19, 2021Assignee: OLYMPUS CORPORATIONInventor: Atsushi Yonetani
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Publication number: 20190324259Abstract: An imaging optical system includes an objective, an image-formation optical system, and an image sensor, wherein an object, the objective, the image-formation optical system, and the image sensor are arranged in this order, the objective includes: a first lens group that includes a meniscus lens component that is the closest to an image among the first lens group, the meniscus lens component having a convex surface facing the object; and a second lens group that is closer to the image than the first lens group is, and the imaging optical system satisfies the following conditional expression: 4×106?PXn?1×1010??(1) where PXn indicates the number of pixels included in a region on the image sensor in which an MTF specific to an e line is 40% or higher at a spatial frequency of 750×NAi [LP/mm], and NAi indicates the numerical aperture of the image side of the imaging optical system.Type: ApplicationFiled: April 16, 2019Publication date: October 24, 2019Applicant: OLYMPUS CORPORATIONInventors: Kenichiro ABE, Atsushi YONETANI
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Publication number: 20180359404Abstract: An observation device 1 includes an imaging optical system 8 that forms an image on the basis of light from sample S, an aperture diaphragm 2 that changes a numerical aperture on an emission side of the imaging optical system 8, a camera 5 that converts the image of the sample into image signals, the image of the sample being formed by the imaging optical system 8, an observation scope changing unit that performs an observation scope changing process in which an observation scope is changed to a specified scope by changing an extraction scope, the extraction scope being a scope from which the image signals obtained by the camera 5 are extracted, a monitor 33 that displays the image signals from the specified scope obtained through the observation scope changing process, and a control unit that controls the aperture diaphragm 2 in accordance with the specified observation scope.Type: ApplicationFiled: June 6, 2018Publication date: December 13, 2018Applicant: OLYMPUS CORPORATIONInventor: Atsushi YONETANI
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Patent number: 9851547Abstract: In a microscope having a plurality of optical units each including a filter block between an objective and a tube lens, the optical unit closest to the objective among the plurality of optical units includes a first filter block provided with an optical filter having a first effective diameter. The optical unit closest to the tube lens among the plurality of optical units includes a second filter block provided with an optical filter having a second effective diameter larger than the first effective diameter.Type: GrantFiled: January 29, 2013Date of Patent: December 26, 2017Assignee: OLYMPUS CORPORATIONInventors: Kenichi Kusaka, Atsushi Yonetani, Masayoshi Karasawa, Katsuyuki Abe
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Publication number: 20130242383Abstract: In a microscope having a plurality of optical units each including a filter block between an objective and a tube lens, the optical unit closest to the objective among the plurality of optical units includes a first filter block provided with an optical filter having a first effective diameter. The optical unit closest to the tube lens among the plurality of optical units includes a second filter block provided with an optical filter having a second effective diameter larger than the first effective diameter.Type: ApplicationFiled: January 29, 2013Publication date: September 19, 2013Applicant: OLYMPUS CORPORATIONInventors: Kenichi KUSAKA, Atsushi YONETANI, Masayoshi KARASAWA, Katsuyuki ABE
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Patent number: 8110394Abstract: A culture microscope apparatus has an illumination unit to apply excitation light to the specimen, a specimen observing portion to observe light generated from the specimen due to the excitation light, and a dimmer unit to dim the excitation light that has penetrated the specimen.Type: GrantFiled: May 7, 2010Date of Patent: February 7, 2012Assignee: Olympus CorporationInventors: Kazuhiro Hasegawa, Kenichi Koyama, Atsuhiro Tsuchiya, Atsushi Yonetani
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Patent number: 7965450Abstract: A microscope objective includes at least five lens components, which are divided into three groups that are, in order from an object side: a front group having a positive refracting power as a whole and having a meniscus lens component with an object-side surface thereof being concave toward the object side; a middle group having a positive refracting power as a whole and having a plurality of cemented lens components; and a rear group having a pair of concave air-contact surfaces arranged adjacent and opposite to one another, wherein the following conditions are satisfied: 3?D0/f?6 and 1?H2/H1?1.5, where D0 is an axial distance from an object surface to a rearmost surface of the microscope objective, f is a focal length of the microscope objective, H2 is a height of a marginal ray as emergent from the rearmost surface of the microscope objective, and H1 is a maximum height of the marginal ray as passing through the front group and the middle group.Type: GrantFiled: December 23, 2009Date of Patent: June 21, 2011Assignee: Olympus CorporationInventor: Atsushi Yonetani
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Patent number: 7852397Abstract: An image pickup apparatus has an image sensor recording image information; a dustproof glass for keeping hermeticity of the periphery of the image sensor, placed in front of the image sensor; an optical filter removably placed in front of the dustproof glass; and a camera mount placed in front of the optical filter. The image pickup apparatus further has a parfocal adjusting device in which a focal position where the optical filter is demounted can be adjusted so as to be nearly equal to the focal position where the optical filter is mounted.Type: GrantFiled: November 2, 2006Date of Patent: December 14, 2010Assignee: Olympus CorporationInventors: Tsuyoshi Mochizuki, Ryuichi Hirano, Atsushi Yonetani
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Patent number: 7799559Abstract: A culture microscope apparatus has an illumination unit to apply excitation light to the specimen, a specimen observing portion to observe light generated from the specimen due to the excitation light, and a dimmer unit to dim the excitation light that has penetrated the specimen.Type: GrantFiled: October 20, 2004Date of Patent: September 21, 2010Assignee: Olympus CorporationInventors: Kazuhiro Hasegawa, Kenichi Koyama, Atsuhiro Tsuchiya, Atsushi Yonetani
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Publication number: 20100208053Abstract: A culture microscope apparatus has an illumination unit to apply excitation light to the specimen, a specimen observing portion to observe light generated from the specimen due to the excitation light, and a dimmer unit to dim the excitation light that has penetrated the specimen.Type: ApplicationFiled: May 7, 2010Publication date: August 19, 2010Applicant: OLYMPUS CORPORATIONInventors: Kazuhiro Hasegawa, Kenichi Koyama, Atsuhiro Tsuchiya, Atsushi Yonetani
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Publication number: 20100165474Abstract: A microscope objective includes at least five lens components, which are divided into three groups that are, in order from an object side: a front group having a positive refracting power as a whole and having a meniscus lens component with an object-side surface thereof being concave toward the object side; a middle group having a positive refracting power as a whole and having a plurality of cemented lens components; and a rear group having a pair of concave air-contact surfaces arranged adjacent and opposite to one another, wherein the following conditions are satisfied: 3?D0/f?6 1?H2/H1?1.5 where D0 is an axial distance from an object surface to a rearmost surface of the microscope objective, f is a focal length of the microscope objective, H2 is a height of a marginal ray as emergent from the rearmost surface of the microscope objective, and H1 is a maximum height of the marginal ray as passing through the front group and the middle group.Type: ApplicationFiled: December 23, 2009Publication date: July 1, 2010Inventor: Atsushi Yonetani
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Publication number: 20100103530Abstract: A microscope objective lens is disclosed that includes, in order from the object side, a first lens group having positive refractive power, a second lens group having positive refractive power that is movable along the optical axis, and a third lens group. The first lens group includes, in order from the object side, two meniscus lens components, each with its concave surface on the object side, and at least one positive lens component, and the third lens group has adjacent concave lens element surfaces that face each other and are in contact with air. Specified conditions may be satisfied, and one or more lens components in the first lens group and the second lens group may be movable.Type: ApplicationFiled: December 28, 2009Publication date: April 29, 2010Applicant: OLYMPUS CORPORATIONInventor: Atsushi YONETANI
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Patent number: 7663807Abstract: A microscope objective includes, in order from the object side, a first lens unit with positive refracting power, having two meniscus lenses, each with a concave surface facing the object side, and at least one positive lens; a second lens unit with positive refracting power; and a third lens unit having concave surfaces adjacent and opposite to each other configured as air contact surfaces. The microscope objective satisfies the following conditions: 7?f 0.5<NA where f is the focal length (mm) of the microscope objective and NA is the numerical aperture of the microscope objective on the entrance side.Type: GrantFiled: December 5, 2007Date of Patent: February 16, 2010Assignee: Olympus CorporationInventor: Atsushi Yonetani
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Patent number: 7646542Abstract: A microscope objective lens is disclosed that includes, in order from the object side, a first lens group having positive refractive power, a second lens group having positive refractive power that is movable along the optical axis, and a third lens group. The first lens group includes, in order from the object side, two meniscus lens components, each with its concave surface on the object side, and at least one positive lens component, and the third lens group has adjacent concave lens element surfaces that face each other and are in contact with air. Specified conditions may be satisfied, and one or more lens components in the first lens group and the second lens group may be movable.Type: GrantFiled: January 24, 2008Date of Patent: January 12, 2010Assignee: Olympus CorporationInventor: Atsushi Yonetani
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Patent number: 7602555Abstract: An observation or measurement device has, at least, an infinity-corrected objective lens and an imaging lens, and satisfies a condition, 4.56?D·NA??30 (mm), where D is the parfocal distance of the objective lens and NA? is the numerical aperture of the imaging lens. It is desirable to make a distance from the mount position of the objective lens to the most object-side surface of the imaging lens variable and to satisfy a condition, 0.5 FL<W<1.2 FL (mm), where W is the variable amount of the distance from the mount position of the objective lens to the most object-side surface of the imaging lens, and FL is the focal length of the imaging lens. It is more desirable to satisfy conditions, 0.4<D/FL<5 and 1?D/?d<3, where ?d is the outside diameter of a connection at the mount of the objective lens.Type: GrantFiled: March 23, 2006Date of Patent: October 13, 2009Assignee: Olympus CorporationInventors: Kenji Kawasaki, Atsushi Yonetani
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Publication number: 20080212199Abstract: A microscope objective lens is disclosed that includes, in order from the object side, a first lens group having positive refractive power, a second lens group having positive refractive power that is movable along the optical axis, and a third lens group. The first lens group includes, in order from the object side, two meniscus lens components, each with its concave surface on the object side, and at least one positive lens component, and the third lens group has adjacent concave lens element surfaces that face each other and are in contact with air. Specified conditions may be satisfied, and one or more lens components in the first lens group and the second lens group may be movable.Type: ApplicationFiled: January 24, 2008Publication date: September 4, 2008Inventor: Atsushi YONETANI
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Publication number: 20080180805Abstract: A microscope objective includes, in order from the object side, a first lens unit with positive refracting power, having two meniscus lenses, each with a concave surface facing the object side, and at least one positive lens; a second lens unit with positive refracting power; and a third lens unit having concave surfaces adjacent and opposite to each other configured as air contact surfaces. The microscope objective satisfies the following conditions: 7?f 0.5<NA where f is the focal length (mm) of the microscope objective and NA is the numerical aperture of the microscope objective on the entrance side.Type: ApplicationFiled: December 5, 2007Publication date: July 31, 2008Inventor: Atsushi Yonetani
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Patent number: 7289199Abstract: An electronic imaging apparatus includes a connecting section connected to an optical apparatus; an optical element having a preset transmittance with respect to light in a preset wavelength region, incident from the optical apparatus; and an electronic image sensor receiving the light transmitted through the optical element.Type: GrantFiled: December 7, 2006Date of Patent: October 30, 2007Assignee: Olympus CorporationInventors: Atsushi Yonetani, Yukio Nonoda, Kazuhiko Yamanouchi
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Publication number: 20070229696Abstract: An image pickup apparatus has an image sensor recording image information; a dustproof glass for keeping hermeticity of the periphery of the image sensor, placed in front of the image sensor; an optical filter removably placed in front of the dustproof glass; and a camera mount placed in front of the optical filter. The image pickup apparatus further has a parfocal adjusting device in which a focal position where the optical filter is demounted can be adjusted so as to be nearly equal to the focal position where the optical filter is mounted.Type: ApplicationFiled: November 2, 2006Publication date: October 4, 2007Applicant: Olympus CorporationInventors: Tsuyoshi Mochizuki, Ryuichi Hirano, Atsushi Yonetani