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).

  • Publication number: 20210352199
    Abstract: 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: Application
    Filed: July 22, 2021
    Publication date: November 11, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Koichi TANAKA, Akihiro UCHIDA, Kenkichi HAYASHI, Seiichi IZAWA, Hideo KOBAYASHI
  • Patent number: 11115593
    Abstract: 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: Grant
    Filed: March 26, 2020
    Date of Patent: September 7, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Koichi Tanaka, Akihiro Uchida, Kenkichi Hayashi, Seiichi Izawa, Hideo Kobayashi
  • Patent number: 10904441
    Abstract: 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: Grant
    Filed: October 2, 2019
    Date of Patent: January 26, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Koichi Tanaka, Seiichi Izawa, Akihiro Uchida, Hideo Kobayashi, Kenkichi Hayashi
  • Publication number: 20210006729
    Abstract: 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: Application
    Filed: September 23, 2020
    Publication date: January 7, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Koichi TANAKA, Kenkichi HAYASHI, Akihiro UCHIDA, Seiichi IZAWA, Shinichiro FUJIKI
  • Publication number: 20200409026
    Abstract: 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: Application
    Filed: September 15, 2020
    Publication date: December 31, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Shinichiro FUJIKI, Akihiro UCHIDA, Koichi TANAKA, Kenkichi HAYASHI, Seiichi IZAWA
  • Publication number: 20200348490
    Abstract: 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: Application
    Filed: July 20, 2020
    Publication date: November 5, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Akihiro UCHIDA, Koichi TANAKA, Kenkichi HAYASHI, Shinichiro FUJIKI, Seiichi IZAWA
  • Patent number: 10802380
    Abstract: 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: Grant
    Filed: September 27, 2019
    Date of Patent: October 13, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Hideo Kobayashi, Kenkichi Hayashi, Koichi Tanaka, Akihiro Uchida, Seiichi Izawa
  • Publication number: 20200225504
    Abstract: 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: Application
    Filed: March 25, 2020
    Publication date: July 16, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Akihiro UCHIDA, Koichi TANAKA, Kenkichi HAYASHI, Hideo KOBAYASHI, Seiichi IZAWA
  • Publication number: 20200228725
    Abstract: 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: Application
    Filed: March 25, 2020
    Publication date: July 16, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Akihiro UCHIDA, Koichi TANAKA, Kenkichi HAYASHI, Shinichiro FUJIKI, Seiichi IZAWA
  • Publication number: 20200228695
    Abstract: 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: Application
    Filed: March 26, 2020
    Publication date: July 16, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Koichi TANAKA, Akihiro UCHIDA, Kenkichi HAYASHI, Seiichi IZAWA, Hideo KOBAYASHI
  • Publication number: 20200036899
    Abstract: 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: Application
    Filed: October 2, 2019
    Publication date: January 30, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Koichi TANAKA, Seiichi IZAWA, Akihiro UCHIDA, Hideo KOBAYASHI, Kenkichi HAYASHI
  • Publication number: 20200026160
    Abstract: 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: Application
    Filed: September 27, 2019
    Publication date: January 23, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Hideo KOBAYASHI, Kenkichi HAYASHI, Koichi TANAKA, Akihiro UCHIDA, Seiichi IZAWA
  • Publication number: 20200029021
    Abstract: 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: Application
    Filed: September 26, 2019
    Publication date: January 23, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Akihiro UCHIDA, Kenkichi HAYASHI, Hideo KOBAYASHI, Seiichi IZAWA, Koichi TANAKA
  • Patent number: 8488429
    Abstract: When applying an electron beam to a master substrate of disk-shaped recording medium placed on a rotation stage, while rotating the master substrate by rotating the rotation stage, to write a master pattern of disk-shaped recording medium on the master substrate, causing the writing to be suspended based on abnormality information of environment and storing a rotation angle of the master substrate when the writing is suspended and causing, thereafter, the writing to be resumed from a suspended position of the writing on the master substrate based on the rotation angle.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: July 16, 2013
    Assignee: FUJIFILM Corporation
    Inventor: Seiichi Izawa
  • Publication number: 20120250479
    Abstract: When applying an electron beam to a master substrate of disk-shaped recording medium placed on a rotation stage, while rotating the master substrate by rotating the rotation stage, to write a master pattern of disk-shaped recording medium on the master substrate, causing the writing to be suspended based on abnormality information of environment and storing a rotation angle of the master substrate when the writing is suspended and causing, thereafter, the writing to be resumed from a suspended position of the writing on the master substrate based on the rotation angle.
    Type: Application
    Filed: March 28, 2012
    Publication date: October 4, 2012
    Applicant: FUJIFILM CORPORATION
    Inventor: Seiichi IZAWA