Patents by Inventor Seiichi IZAWA
Seiichi IZAWA 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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Publication number: 20240036348Abstract: A lens interchangeable digital camera includes an image sensor in which a subject image is formed on an imaging surface through an imaging optical system including a zoom lens and a sensor movement type shake correction mechanism that performs a sensor movement operation of moving the image sensor in a direction to cancel a shake. A zoom operation determination unit determines whether or not a zoom operation in which the zoom lens moves is being performed. In a case where the zoom operation determination unit determines that the zoom operation is being performed, an operation deciding unit prohibits a shift operation which is at least a part of a sensor movement operation which is allowed while the zoom operation is stopped.Type: ApplicationFiled: October 10, 2023Publication date: February 1, 2024Applicant: FUJIFILM CorporationInventors: Akihiro UCHIDA, Koichi TANAKA, Kenkichi HAYASHI, Hideo KOBAYASHI, Seiichi IZAWA
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Patent number: 11822097Abstract: A lens interchangeable digital camera includes an image sensor in which a subject image is formed on an imaging surface through an imaging optical system including a zoom lens and a sensor movement type shake correction mechanism that performs a sensor movement operation of moving the image sensor in a direction to cancel a shake. A zoom operation determination unit determines whether or not a zoom operation in which the zoom lens moves is being performed. In a case where the zoom operation determination unit determines that the zoom operation is being performed, an operation deciding unit prohibits a shift operation which is at least a part of a sensor movement operation which is allowed while the zoom operation is stopped.Type: GrantFiled: July 27, 2022Date of Patent: November 21, 2023Assignee: FUJIFILM CorporationInventors: Akihiro Uchida, Koichi Tanaka, Kenkichi Hayashi, Hideo Kobayashi, Seiichi Izawa
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Publication number: 20220365360Abstract: A lens interchangeable digital camera includes an image sensor in which a subject image is formed on an imaging surface through an imaging optical system including a zoom lens and a sensor movement type shake correction mechanism that performs a sensor movement operation of moving the image sensor in a direction to cancel a shake. A zoom operation determination unit determines whether or not a zoom operation in which the zoom lens moves is being performed. In a case where the zoom operation determination unit determines that the zoom operation is being performed, an operation deciding unit prohibits a shift operation which is at least a part of a sensor movement operation which is allowed while the zoom operation is stopped.Type: ApplicationFiled: July 27, 2022Publication date: November 17, 2022Applicant: FUJIFILM CorporationInventors: Akihiro UCHIDA, Koichi TANAKA, Kenkichi HAYASHI, Hideo KOBAYASHI, Seiichi IZAWA
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Patent number: 11467367Abstract: An imaging device stores a focal length and a position of a focus lens in a storage unit in a case in which a focal state is determined to be a focus state in which a subject is in focus and at least one of the imaging device or the subject is determined to be stationary; generates tracking data for changing the position of the focus lens according to a change in focal length, using a plurality of stored focal lengths and a plurality of stored positions of the focus lens; and performs a zoom tracking control using the generated tracking data.Type: GrantFiled: September 15, 2020Date of Patent: October 11, 2022Assignee: FUJIFILM CorporationInventors: Shinichiro Fujiki, Akihiro Uchida, Koichi Tanaka, Kenkichi Hayashi, Seiichi Izawa
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Patent number: 11448894Abstract: A lens interchangeable digital camera includes an image sensor in which a subject image is formed on an imaging surface through an imaging optical system including a zoom lens and a sensor movement type shake correction mechanism that performs a sensor movement operation of moving the image sensor in a direction to cancel a shake. A zoom operation determination unit determines whether or not a zoom operation in which the zoom lens moves is being performed. In a case where the zoom operation determination unit determines that the zoom operation is being performed, an operation deciding unit prohibits a shift operation which is at least a part of a sensor movement operation which is allowed while the zoom operation is stopped.Type: GrantFiled: March 25, 2020Date of Patent: September 20, 2022Assignee: FUJIFILM CorporationInventors: Akihiro Uchida, Koichi Tanaka, Kenkichi Hayashi, Hideo Kobayashi, Seiichi Izawa
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Patent number: 11418711Abstract: The lens interchangeable digital camera includes a sensor movement type shake correction mechanism that performs a sensor movement operation of moving an image sensor in a direction to cancel a shake. A characteristic data acquisition unit acquires optical characteristic data corresponding to optical characteristics of an imaging optical system of a lens unit mounted on a body mount. A determination unit determines whether or not adaptive optical characteristic data that can be handled by an image correction unit that performs image correction based on the optical characteristic data can be acquired. An operation deciding unit prohibits a shift operation which is at least a part of a sensor movement operation in an uncorrectable state where the image correction based on the adaptive optical characteristic data is not possible since the adaptive optical characteristic data cannot be acquired.Type: GrantFiled: July 22, 2021Date of Patent: August 16, 2022Assignee: FUJIFILM CorporationInventors: Koichi Tanaka, Akihiro Uchida, Kenkichi Hayashi, Seiichi Izawa, Hideo Kobayashi
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Patent number: 11394868Abstract: An imaging device acquires a focal length of an imaging lens; and in performing of zoom tracking control to change a state of the focus lens of the imaging lens according to the acquired focal length, in a case where a change of the acquired focal length is detected, varies a criterion in the zoom tracking control depending on whether autofocus is being executed or not.Type: GrantFiled: March 25, 2020Date of Patent: July 19, 2022Assignee: FUJIFILM CorporationInventors: Akihiro Uchida, Koichi Tanaka, Kenkichi Hayashi, Shinichiro Fujiki, Seiichi Izawa
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Patent number: 11375118Abstract: An imaging device includes: a suppression unit that moves an anti-vibration element to a position, which is determined according to a detection result of a detection unit detecting vibration applied to the device, to suppress an influence of the vibration on a subject image; and a control unit that performs control on a display unit to display the subject image as a video image and performs control on the suppression unit to center the anti-vibration element while a visibility-obstruction phenomenon, which is predetermined as a phenomenon where the visual recognition of a shift in an angle of view caused by the centering of the anti-vibration element can be obstructed, occurs in a state where an operation for displaying the video image by the display unit is being performed and an operation for suppressing the influence by the suppression unit is being performed.Type: GrantFiled: September 26, 2019Date of Patent: June 28, 2022Assignee: FUJIFILM CorporationInventors: Akihiro Uchida, Kenkichi Hayashi, Hideo Kobayashi, Seiichi Izawa, Koichi Tanaka
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Patent number: 11336815Abstract: A focusing control device that moves a position of a focus lens included in an imaging lens along an optical axis direction. The device comprises a processor configured to execute a process.Type: GrantFiled: September 23, 2020Date of Patent: May 17, 2022Assignee: FUJIFILM CorporationInventors: Koichi Tanaka, Kenkichi Hayashi, Akihiro Uchida, Seiichi Izawa, Shinichiro Fujiki
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Imaging device, imaging method, and program capable of suppressing decrease in autofocusing accuracy
Patent number: 11294145Abstract: An imaging device derives a change amount of image magnification corresponding to each of a plurality of F-numbers in an autofocus area on the basis of a reference value of the change amount of the image magnification in accordance with a change in position of a focus lens for each of the plurality of F-numbers, in a case where autofocus is executed; determines, as a limit F-number, an F-number corresponding to any change amount equal to or less than a threshold value of the allowed change amount of the image magnification among the derived change amounts; and sets an F-number as the limit F-number in a case where the F-number obtained from a subject luminance in a case where autofocus is executed exceeds the determined limit F-number.Type: GrantFiled: July 20, 2020Date of Patent: April 5, 2022Assignee: FUJIFILM CorporationInventors: Akihiro Uchida, Koichi Tanaka, Kenkichi Hayashi, Shinichiro Fujiki, Seiichi Izawa -
Publication number: 20210352199Abstract: The lens interchangeable digital camera includes a sensor movement type shake correction mechanism that performs a sensor movement operation of moving an image sensor in a direction to cancel a shake. A characteristic data acquisition unit acquires optical characteristic data corresponding to optical characteristics of an imaging optical system of a lens unit mounted on a body mount. A determination unit determines whether or not adaptive optical characteristic data that can be handled by an image correction unit that performs image correction based on the optical characteristic data can be acquired. An operation deciding unit prohibits a shift operation which is at least a part of a sensor movement operation in an uncorrectable state where the image correction based on the adaptive optical characteristic data is not possible since the adaptive optical characteristic data cannot be acquired.Type: ApplicationFiled: July 22, 2021Publication date: November 11, 2021Applicant: FUJIFILM CorporationInventors: Koichi TANAKA, Akihiro UCHIDA, Kenkichi HAYASHI, Seiichi IZAWA, Hideo KOBAYASHI
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Patent number: 11115593Abstract: The lens interchangeable digital camera includes a sensor movement type shake correction mechanism that performs a sensor movement operation of moving an image sensor in a direction to cancel a shake. A characteristic data acquisition unit acquires optical characteristic data corresponding to optical characteristics of an imaging optical system of a lens unit mounted on a body mount. A determination unit determines whether or not adaptive optical characteristic data that can be handled by an image correction unit that performs image correction based on the optical characteristic data can be acquired. An operation deciding unit prohibits a shift operation which is at least a part of a sensor movement operation in an uncorrectable state where the image correction based on the adaptive optical characteristic data is not possible since the adaptive optical characteristic data cannot be acquired.Type: GrantFiled: March 26, 2020Date of Patent: September 7, 2021Assignee: FUJIFILM CorporationInventors: Koichi Tanaka, Akihiro Uchida, Kenkichi Hayashi, Seiichi Izawa, Hideo Kobayashi
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Patent number: 10904441Abstract: An imaging device includes: a lens-side suppression unit that moves an anti-vibration lens, which is provided in an interchangeable imaging lens mounted on an imaging device body including an imaging element, to a position, which is determined according to a detection result of a detection unit detecting vibration applied to a device, to suppress an influence of the vibration on a subject image; an imaging element-side suppression unit that moves the imaging element to suppress a shift in an angle of view caused by the movement of the anti-vibration lens; and a control unit that performs control on the lens-side suppression unit to limit a movable range of the anti-vibration lens, which is moved by the lens-side suppression unit, on the basis of the amount of the maximum shift in the angle of view caused by the movement of the imaging element performed by the imaging element-side suppression unit.Type: GrantFiled: October 2, 2019Date of Patent: January 26, 2021Assignee: FUJIFILM CorporationInventors: Koichi Tanaka, Seiichi Izawa, Akihiro Uchida, Hideo Kobayashi, Kenkichi Hayashi
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Publication number: 20210006729Abstract: A focusing control device that moves a position of a focus lens included in an imaging lens along an optical axis direction. The device comprises a processor configured to execute a process.Type: ApplicationFiled: September 23, 2020Publication date: January 7, 2021Applicant: FUJIFILM CorporationInventors: Koichi TANAKA, Kenkichi HAYASHI, Akihiro UCHIDA, Seiichi IZAWA, Shinichiro FUJIKI
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Publication number: 20200409026Abstract: An imaging device stores a focal length and a position of a focus lens in a storage unit in a case in which a focal state is determined to be a focus state in which a subject is in focus and at least one of the imaging device or the subject is determined to be stationary; generates tracking data for changing the position of the focus lens according to a change in focal length, using a plurality of stored focal lengths and a plurality of stored positions of the focus lens; and performs a zoom tracking control using the generated tracking data.Type: ApplicationFiled: September 15, 2020Publication date: December 31, 2020Applicant: FUJIFILM CorporationInventors: Shinichiro FUJIKI, Akihiro UCHIDA, Koichi TANAKA, Kenkichi HAYASHI, Seiichi IZAWA
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Publication number: 20200348490Abstract: An imaging device derives a change amount of image magnification corresponding to each of a plurality of F-numbers in an autofocus area on the basis of a reference value of the change amount of the image magnification in accordance with a change in position of a focus lens for each of the plurality of F-numbers, in a case where autofocus is executed; determines, as a limit F-number, an F-number corresponding to any change amount equal to or less than a threshold value of the allowed change amount of the image magnification among the derived change amounts; and sets an F-number as the limit F-number in a case where the F-number obtained from a subject luminance in a case where autofocus is executed exceeds the determined limit F-number.Type: ApplicationFiled: July 20, 2020Publication date: November 5, 2020Applicant: FUJIFILM CorporationInventors: Akihiro UCHIDA, Koichi TANAKA, Kenkichi HAYASHI, Shinichiro FUJIKI, Seiichi IZAWA
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Patent number: 10802380Abstract: An imaging device includes: an imaging device body including an imaging element that receives reflected light representing a subject as a subject image, and a body-side suppression unit that suppresses an influence of vibration, which is applied to a device, on the subject image on the basis of a detection result of a detection unit detecting the vibration; and a control unit performing control on the body-side suppression unit to suppress the influence with a limit that is a degree for limiting the suppression of the influence performed by the body-side suppression unit and is determined according to information about an interchangeable imaging lens mounted on the imaging device body.Type: GrantFiled: September 27, 2019Date of Patent: October 13, 2020Assignee: FUJIFILM CorporationInventors: Hideo Kobayashi, Kenkichi Hayashi, Koichi Tanaka, Akihiro Uchida, Seiichi Izawa
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Publication number: 20200225504Abstract: A lens interchangeable digital camera includes an image sensor in which a subject image is formed on an imaging surface through an imaging optical system including a zoom lens and a sensor movement type shake correction mechanism that performs a sensor movement operation of moving the image sensor in a direction to cancel a shake. A zoom operation determination unit determines whether or not a zoom operation in which the zoom lens moves is being performed. In a case where the zoom operation determination unit determines that the zoom operation is being performed, an operation deciding unit prohibits a shift operation which is at least a part of a sensor movement operation which is allowed while the zoom operation is stopped.Type: ApplicationFiled: March 25, 2020Publication date: July 16, 2020Applicant: FUJIFILM CorporationInventors: Akihiro UCHIDA, Koichi TANAKA, Kenkichi HAYASHI, Hideo KOBAYASHI, Seiichi IZAWA
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Publication number: 20200228695Abstract: The lens interchangeable digital camera includes a sensor movement type shake correction mechanism that performs a sensor movement operation of moving an image sensor in a direction to cancel a shake. A characteristic data acquisition unit acquires optical characteristic data corresponding to optical characteristics of an imaging optical system of a lens unit mounted on a body mount. A determination unit determines whether or not adaptive optical characteristic data that can be handled by an image correction unit that performs image correction based on the optical characteristic data can be acquired. An operation deciding unit prohibits a shift operation which is at least a part of a sensor movement operation in an uncorrectable state where the image correction based on the adaptive optical characteristic data is not possible since the adaptive optical characteristic data cannot be acquired.Type: ApplicationFiled: March 26, 2020Publication date: July 16, 2020Applicant: FUJIFILM CorporationInventors: Koichi TANAKA, Akihiro UCHIDA, Kenkichi HAYASHI, Seiichi IZAWA, Hideo KOBAYASHI
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Publication number: 20200228725Abstract: An imaging device acquires a focal length of an imaging lens; and in performing of zoom tracking control to change a state of the focus lens of the imaging lens according to the acquired focal length, in a case where a change of the acquired focal length is detected, varies a criterion in the zoom tracking control depending on whether autofocus is being executed or not.Type: ApplicationFiled: March 25, 2020Publication date: July 16, 2020Applicant: FUJIFILM CorporationInventors: Akihiro UCHIDA, Koichi TANAKA, Kenkichi HAYASHI, Shinichiro FUJIKI, Seiichi IZAWA