Patents by Inventor Kazumi Ito
Kazumi Ito 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: 9509899Abstract: A camera system includes an interchangeable lens and a camera main body. The interchangeable lens includes a lens side storage unit that stores pupil related data according to an image height. The camera main body includes an image sensor including focus detection pixels, a main body side storage unit that stores correction data, and a correction unit corrects non-uniformity in illumination distribution of outputs of the focus detection pixels. The pupil related data is data regarding an F-number and an exit pupil position. The data regarding the F-number indicates a range of luminous flux to be applied to the focus detection pixels at a predetermined image height. The data regarding the exit pupil position relates to a position of intersection of a center of luminous flux applied to the focus detection pixels at a predetermined image height and an optical axis of the imaging optical system.Type: GrantFiled: March 28, 2016Date of Patent: November 29, 2016Assignee: Olympus CorporationInventors: Tetsuo Kikuchi, Kazumi Ito, Kazumasa Kunugi, Yukie Yamazaki, Yoshinobu Omata
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Patent number: 9473693Abstract: A photographing apparatus has a body portion to which a lens portion is mountable and to which an image forming luminous flux is conducted from the lens portion, and the photographing apparatus includes an image pickup device having pixels for image pickup and pixels for focus detection, a storage section that retains information of sensitivity characteristics of the pixels for focus detection, and a control amount calculation section that obtains information about an incident angle and an angular range of the image forming luminous flux from the lens portion and calculates information for focus control based on the obtained information and information read from the storage section. The focus control of high precision is enabled with simple configuration, irrespective of a lens system.Type: GrantFiled: June 1, 2015Date of Patent: October 18, 2016Assignee: Olympus CorporationInventors: Kazumi Ito, Keigo Matsuo
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Publication number: 20160223883Abstract: A situation comprehending apparatus included in an imaging apparatus includes an image acquiring section, a structure specifying section, a distance acquiring section, a main subject specifying section, and a main subject distance distribution determining section. The image acquiring section acquires an image of a target scene. The structure specifying section specifies a structure having linear image information in a far or near direction of the target scene or in a direction perpendicular to the far or near direction. The distance acquiring section acquires a distance to a structure straight line included in the structure. The main subject specifying section specifies a main subject different from the structure included in the image. The main subject distance distribution determining section determines distance distribution to the main subject with use of an image of the structure and an image of the main subject.Type: ApplicationFiled: February 3, 2016Publication date: August 4, 2016Applicant: OLYMPUS CORPORATIONInventors: Mizuki KOSHIKAWA, Kazumi ITO, Taichiro KOUCHI, Osamu NONAKA
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Publication number: 20160212325Abstract: A camera system includes an interchangeable lens and a camera main body. The interchangeable lens includes a lens side storage unit that stores pupil related data according to an image height. The camera main body includes an image sensor including focus detection pixels, a main body side storage unit that stores correction data, and a correction unit corrects non-uniformity in illumination distribution of outputs of the focus detection pixels. The pupil related data is data regarding an F-number and an exit pupil position. The data regarding the F-number indicates a range of luminous flux to be applied to the focus detection pixels at a predetermined image height. The data regarding the exit pupil position relates to a position of intersection of a center of luminous flux applied to the focus detection pixels at a predetermined image height and an optical axis of the imaging optical system.Type: ApplicationFiled: March 28, 2016Publication date: July 21, 2016Inventors: Tetsuo KIKUCHI, Kazumi ITO, Kazumasa KUNUGI, Yukie YAMAZAKI, Yoshinobu OMATA
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Publication number: 20160205312Abstract: A focus adjustment device comprises an image sensor having imaging pixels and focus detection pixels, which subjects light flux that is passed through a photographing lens to photoelectric conversion and outputs an image signal, a first memory which stores information relating to incident angle range of light flux that is incident towards the image sensor, a second memory which stores information relating to characteristics of the image sensor, and a calculation section which calculates information for focus adjustment based on output of the first memory and output of the second memory.Type: ApplicationFiled: March 18, 2016Publication date: July 14, 2016Inventors: Kazumi ITO, Keigo MATSUO, Satoru ITO
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Publication number: 20160182811Abstract: A photographing apparatus of the present invention, having a lens section including a photographing optical system for guiding photographing light flux and a body section capable of being attached to and detached from the lens section, comprises an image sensor having imaging pixels and pairs of focus detection pixels, a first memory for storing information relating to incident angle range of imaging light flux, a second memory, arranged in the body section, for storing information on light receiving sensitivity characteristic of the focus detection pixels, and a control amount calculate section for calculating information for focus adjustment control based on information that has been read out from the first memory and the second memory, wherein the information relating to incident angle range includes information relating to shape of a plurality of arcs based on openings of a plurality of lens groups contained in the photographing optical system.Type: ApplicationFiled: December 16, 2015Publication date: June 23, 2016Inventors: Kazumi ITO, Ryuhi OKUBO
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Publication number: 20160039155Abstract: A film manufacturing method and manufacturing apparatus for manufacturing a film having excellent dimensional stability to heat at a good product yield and performing a stress relaxation treatment of the film include performing the stress relaxation treatment while conveying the film in a non-contact state using a levitation conveyance device for jetting a heated gas from gas injection holes to the film and conveying the film in a non-contact state. The film manufacturing method and manufacturing apparatus are particularly suitable for stress relaxation treatment of a polyimide film obtained by heat-treating a polyimide film precursor.Type: ApplicationFiled: March 6, 2014Publication date: February 11, 2016Applicant: UBE INDUSTRIES, LTD.Inventors: Kazumi ITO, Masakatsu KIMURA, Yuji OGAWA, Taiki HIROHATA
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Publication number: 20150298750Abstract: A seal structure is provided to block a clearance between a rotational casing and a fixed housing for driving a crawler of a crawler vehicle. A seal ring is held in a first annular holding groove provided in the fixed housing together with a first O-ring that biases the seal ring toward the outside of the first holding groove. A second holding groove having an opening facing the first holding groove is provided in the rotational casing to hold a slide ring having a higher rigidity than that of the seal ring together with a second O-ring that biases the slide ring toward the seal ring. A foreign object such as mud is thereby prevented from invading a gear chamber without increasing a frictional loss.Type: ApplicationFiled: March 28, 2013Publication date: October 22, 2015Inventors: Yoshikazu HIROTA, Chikashi IMOTO, Kazumi ITO, Junichiro SUGIMOTO, Eishin NOGUCHI, Kaori KAWABATA
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Publication number: 20150264251Abstract: A photographing apparatus has a body portion to which a lens portion is mountable and to which an image forming luminous flux is conducted from the lens portion, and the photographing apparatus includes an image pickup device having pixels for image pickup and pixels for focus detection, a storage section that retains information of sensitivity characteristics of the pixels for focus detection, and a control amount calculation section that obtains information about an incident angle and an angular range of the image forming luminous flux from the lens portion and calculates information for focus control based on the obtained information and information read from the storage section. The focus control of high precision is enabled with simple configuration, irrespective of a lens system.Type: ApplicationFiled: June 1, 2015Publication date: September 17, 2015Inventors: Kazumi ITO, Keigo MATSUO
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Patent number: 8994842Abstract: A zoom lens includes a frontmost lens unit, which is located closest to the object side and a plurality of lens units located closer to the image side than the frontmost lens unit. All the distances between adjacent lens units vary during zooming in the state in which the zoom lens is focused on an object at infinity. One of the plurality of lens units is a first focusing lens unit. During focusing from an object at infinity to an object at a short distance in a first shooting mode, only the first focusing lens unit moves. During focusing from an object at infinity to an object at a short distance in a second shooting mode, two lens units in the zoom lens move.Type: GrantFiled: November 4, 2013Date of Patent: March 31, 2015Assignee: Olympus Imaging Corp.Inventors: Toshio Takahashi, Hiroshi Kodama, Kento Hara, Kazumi Ito
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Patent number: 8970771Abstract: A waterproof camera includes an image pickup section, a display section that displays image data, a mode setting section that sets a semi-underwater mode in which both objects under water and above water are simultaneously photographed, and a display control section that limits a display range of the display section when the semi-underwater mode is set, wherein the mode setting section controls the position of a photographing lens or the like to adjust a focus balance of at least one of under water and above water, and the display control section displays both object images under water and above water within a limited display range of the display section.Type: GrantFiled: December 26, 2012Date of Patent: March 3, 2015Assignee: Olympus Imaging Corp.Inventors: Kazumi Ito, Osamu Nonaka
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Publication number: 20140132790Abstract: A zoom lens includes a frontmost lens unit, which is located closest to the object side and a plurality of lens units located closer to the image side than the frontmost lens unit. All the distances between adjacent lens units vary during zooming in the state in which the zoom lens is focused on an object at infinity. One of the plurality of lens units is a first focusing lens unit. During focusing from an object at infinity to an object at a short distance in a first shooting mode, only the first focusing lens unit moves. During focusing from an object at infinity to an object at a short distance in a second shooting mode, two lens units in the zoom lens move.Type: ApplicationFiled: November 4, 2013Publication date: May 15, 2014Applicant: OLYMPUS IMAGING CORP.Inventors: Toshio Takahashi, Hiroshi Kodama, Kento Hara, Kazumi Ito
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Publication number: 20130113912Abstract: A waterproof camera includes an image pickup section, a display section that displays image data, a mode setting section that sets a semi-underwater mode in which both objects under water and above water are simultaneously photographed, and a display control section that limits a display range of the display section when the semi-underwater mode is set, wherein the mode setting section controls the position of a photographing lens or the like to adjust a focus balance of at least one of under water and above water, and the display control section displays both object images under water and above water within a limited display range of the display section.Type: ApplicationFiled: December 26, 2012Publication date: May 9, 2013Applicant: OLYMPUS IMAGING CORP.Inventors: Kazumi ITO, Osamu NONAKA
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Patent number: 8419381Abstract: In a tandem piston pump (1) from which pump discharge pressure from four systems is extracted, a tilt axis direction of a front swash plate (14) and a tilt axis direction of a rear swash plate (54) are different to each other, respective discharge ports (23, 24) of a rear pump (50) are opened at a phase difference relative to respective discharge ports (21, 22) of a front pump (10), and respective pump ports (41, 42) of the front pump (10) and respective pump ports (43, 44) of the rear pump (50) are opened in different side faces (71, 72) of a port block (70).Type: GrantFiled: July 31, 2007Date of Patent: April 16, 2013Assignee: Kayaba Industry Co., Ltd.Inventors: Kazumi Ito, Atsushi Aoyama
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Patent number: 8379112Abstract: A waterproof camera includes an image pickup section, a display section that displays image data, a mode setting section that sets a semi-underwater mode in which both objects under water and above water are simultaneously photographed, and a display control section that limits a display range of the display section when the semi-underwater mode is set, wherein the mode setting section controls the position of a photographing lens or the like to adjust a focus balance of at least one of under water and above water, and the display control section displays both object images under water and above water within a limited display range of the display section.Type: GrantFiled: August 26, 2010Date of Patent: February 19, 2013Assignee: Olympus Imaging Corp.Inventors: Kazumi Ito, Osamu Nonaka, Kazuya Nakabe
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Publication number: 20110058085Abstract: A waterproof camera includes an image pickup section, a display section that displays image data, a mode setting section that sets a semi-underwater mode in which both objects under water and above water are simultaneously photographed, and a display control section that limits a display range of the display section when the semi-underwater mode is set, wherein the mode setting section controls the position of a photographing lens or the like to adjust a focus balance of at least one of under water and above water, and the display control section displays both object images under water and above water within a limited display range of the display sectionType: ApplicationFiled: August 26, 2010Publication date: March 10, 2011Applicant: OLYMPUS IMAGING CORP.Inventors: Kazumi ITO, Osamu Nonaka, Kazuya Nakabe
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Publication number: 20100135827Abstract: In a tandem piston pump (1) from which pump discharge pressure from four systems is extracted, a tilt axis direction of a front swash plate (14) and a tilt axis direction of a rear swash plate (54) are different to each other, respective discharge ports (23, 24) of a rear pump (50) are opened at a phase difference relative to respective discharge ports (21, 22) of a front pump (10), and respective pump ports (41, 42) of the front pump (10) and respective pump ports (43, 44) of the rear pump (50) are opened in different side faces (71, 72) of a port block (70).Type: ApplicationFiled: July 31, 2007Publication date: June 3, 2010Applicant: KAYABA INDUSTRY CO., LTD.Inventors: Kazumi Ito, Atsushi Aoyama
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Patent number: 7242533Abstract: A two-unit zoom lens system which comprises a negative first lens unit G1 and a positive second lens unit G2, during change of magnification from a wide-angle end to a telephoto end, the first lens unit and the second lens unit are moved so as to reduce a space between the first lens unit and the second lens unit, the first lens unit includes a negative sub-unit G1a and a positive sub-unit G1b, the second lens unit has a first positive lens L21, a second negative lens L22, and a third positive lens L23, and the system further has an aperture stop S disposed in an air space which comes into contact with the first positive lens L21.Type: GrantFiled: September 8, 2006Date of Patent: July 10, 2007Assignee: Olympus Imaging Corp.Inventor: Kazumi Ito
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Publication number: 20070064312Abstract: A two-unit zoom lens system which comprises a negative first lens unit G1 and a positive second lens unit G2, during change of magnification from a wide-angle end to a telephoto end, the first lens unit and the second lens unit are moved so as to reduce a space between the first lens unit and the second lens unit, the first lens unit includes a negative sub-unit G1a and a positive sub-unit G1b, the second lens unit has a first positive lens L21, a second negative lens L22, and a third positive lens L23, and the system further has an aperture stop S disposed in an air space which comes into contact with the first positive lens L21.Type: ApplicationFiled: September 8, 2006Publication date: March 22, 2007Inventor: Kazumi Ito
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Patent number: 6946169Abstract: The present invention provides a liquid crystal display element having an adequate pre-tilt angle for preventing the reverse domain, as well as excellent electrical properties by preparation of the polyamic acid composition for the liquid crystal display element comprises a polyamic acid A that excels in electrical properties and a polyamic acid B that has side chains, mixed in the ratio A/B of 50/50 to 95/5 (by weight).Type: GrantFiled: December 8, 1998Date of Patent: September 20, 2005Assignee: Chisso CorporationInventors: Satoshi Tanioka, Shizuo Murata, Itsuo Shimizu, Kazumi Ito