Patents by Inventor Norihiko Akamatsu

Norihiko Akamatsu 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).

  • Patent number: 9800772
    Abstract: There is provided a focus adjustment device including an image sensor including a plurality of phase difference detection pixels that each perform pupil division of a photographing lens, a correction value acquisition unit for acquiring a correction value for a focus position in a spatial frequency of a subject which is obtained by the image sensor, and a focus adjustment unit for adjusting a focus position of the photographing lens based on the correction value acquired by the correction value acquisition unit.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: October 24, 2017
    Assignee: SONY CORPORTAION
    Inventors: Yoshitaka Miyatani, Norihiko Akamatsu, Genta Yagyu
  • Patent number: 9554029
    Abstract: There is provided an imaging apparatus including a first focus detection unit that has a plurality of first focus detection areas in a photographed screen, and detects a first defocusing amount in the first focus detection areas, a second focus detection unit that has a plurality of second focus detection areas in a photographed screen, and detects a second defocusing amount in the second focus detection areas, a defocusing amount selection unit that selects which of the first defocusing amount detected by the first focus detection unit and the second defocusing amount detected by the second focus detection unit is used, and a focus control unit that performs focus control by moving a focus lens on the basis of the defocusing amount selected by the defocusing amount selection unit.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: January 24, 2017
    Assignee: SONY CORPORATION
    Inventors: Kenji Komori, Norihiko Akamatsu, Akifumi Mizukami
  • Patent number: 9219856
    Abstract: The present technology is provided to allow a user to easily recognize a subject to be given priority. A focusing target selection unit selects, from among a plurality of first focus detection areas in which a focus is detected by a first focus detection unit, an area to be focused as a focusing target area on the basis of a detected result of the focus in the first focus detection areas. A display area selection unit selects, from among a plurality of second focus detection areas in which a focus is detected by a second focus detection unit, an area to be displayed as a display area along with the focusing target area on the basis of a detected result of the focus in the plurality of second focus detection areas. A display control unit causes a display unit to display the display area.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: December 22, 2015
    Assignee: SONY CORPORATION
    Inventors: Norihiko Akamatsu, Akifumi Mizukami, Kenji Komori
  • Publication number: 20150222806
    Abstract: The present technology is provided to allow a user to easily recognize a subject to be given priority. A focusing target selection unit selects, from among a plurality of first focus detection areas in which a focus is detected by a first focus detection unit, an area to be focused as a focusing target area on the basis of a detected result of the focus in the first focus detection areas. A display area selection unit selects, from among a plurality of second focus detection areas in which a focus is detected by a second focus detection unit, an area to be displayed as a display area along with the focusing target area on the basis of a detected result of the focus in the plurality of second focus detection areas. A display control unit causes a display unit to display the display area.
    Type: Application
    Filed: June 11, 2013
    Publication date: August 6, 2015
    Applicant: SONY CORPORATION
    Inventors: Norihiko Akamatsu, Akifumi Mizukami, Kenji Komori
  • Publication number: 20150181106
    Abstract: There is provided an imaging apparatus including a first focus detection unit that has a plurality of first focus detection areas in a photographed screen, and detects a first defocusing amount in the first focus detection areas, a second focus detection unit that has a plurality of second focus detection areas in a photographed screen, and detects a second defocusing amount in the second focus detection areas, a defocusing amount selection unit that selects which of the first defocusing amount detected by the first focus detection unit and the second defocusing amount detected by the second focus detection unit is used, and a focus control unit that performs focus control by moving a focus lens on the basis of the defocusing amount selected by the defocusing amount selection unit.
    Type: Application
    Filed: July 9, 2013
    Publication date: June 25, 2015
    Inventors: Kenji Komori, Norihiko Akamatsu, Akifumi Mizukami
  • Publication number: 20140071318
    Abstract: There is provided an imaging apparatus including a first focus detection unit that is provided in an image sensor, and outputs a signal for phase difference focus detection by sensing subject image light that has passed through a photographing lens, and a second focus detection unit that is provided so as to be positioned above the image sensor, and outputs a signal for phase difference focus detection by sensing subject image light that has passed through the photographing lens.
    Type: Application
    Filed: August 14, 2013
    Publication date: March 13, 2014
    Applicant: SONY CORPORATION
    Inventors: Norihiko Akamatsu, Masahiko Nakamura, Kenji Komori
  • Publication number: 20140036134
    Abstract: There is provided a focus adjustment device including an image sensor including a plurality of phase difference detection pixels that each perform pupil division of a photographing lens, a correction value acquisition unit for acquiring a correction value for a focus position in a spatial frequency of a subject which is obtained by the image sensor, and a focus adjustment unit for adjusting a focus position of the photographing lens based on the correction value acquired by the correction value acquisition unit.
    Type: Application
    Filed: June 6, 2013
    Publication date: February 6, 2014
    Inventors: Yoshitaka MIYATANI, Norihiko AKAMATSU, Genta YAGYU
  • Patent number: 8508650
    Abstract: An image pickup system includes an image pickup apparatus and a mount adaptor that adjusts a flange focal length between the image pickup apparatus and an interchangeable lens. The mount adaptor includes a phase-difference focus detection unit that can output a first phase-difference focus detection signal, and an optical device that separates first incident light into second and third incident light. The first incident light is transmitted from the interchangeable lens. The second incident light enters the image pickup apparatus. The third incident light enters the phase-difference focus detection unit. The image pickup apparatus includes an image pickup device that can output a second phase-difference focus detection signal, and a controller that selects either of the first phase-difference focus detection signal and the second phase-difference focus detection signal on the basis of satisfaction of a predetermined condition and performs focusing.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: August 13, 2013
    Assignee: Sony Corporation
    Inventors: Norihiko Akamatsu, Yoshitaka Miyatani
  • Patent number: 8503871
    Abstract: An imaging system includes an imaging apparatus which is provided with an imaging device and a mount adaptor which adjusts a flange focal length between the imaging apparatus and an interchangeable lens, wherein the mount adaptor is provided with a phase difference focus detection section which performs focus detection from a phase difference and an optical device which splits incident light from the interchangeable lens into incident light of the imaging device and incident light of the phase difference focus detection section, and the imaging apparatus is provided with a contrast focus detection section which performs focus detection from contrast using the imaging device, an adjustment section which adjusts the focus position of the phase difference focus detection section, and an adjustment control section which activates adjustment control of the focus position using detection of the mounting of the mount adaptor and the interchangeable lens.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: August 6, 2013
    Assignee: Sony Corporation
    Inventors: Nobuharu Murashima, Makibi Nakamura, Norihiko Akamatsu
  • Patent number: 8218962
    Abstract: An image-capturing apparatus includes an image-capturing optical system; a sensor unit having line sensors that receive light fluxes of an object, which have been transmitted through a pair of partial areas in an exit pupil of the image-capturing optical system; image-capturing elements having a pixel arrangement capable of generating an image signal and a focus detection pixel sequence, in which two or more pairs of pixels that receive the light fluxes of an object, are arranged in a predetermined direction; a continuous image-capturing unit configured to perform continuous image capturing of actually exposing the image-capturing elements; a signal generation unit configured to perform another exposure for the sensor unit; a first focus detection unit configured to perform focus detection of a phase-difference detection method; a second focus detection unit configured to perform focus detection; and a focus adjustment unit configured to perform focus adjustment.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: July 10, 2012
    Assignee: Sony Corporation
    Inventors: Shinichi Fujii, Norihiko Akamatsu
  • Publication number: 20120163786
    Abstract: An imaging system includes an imaging apparatus which is provided with an imaging device and a mount adaptor which adjusts a flange focal length between the imaging apparatus and an interchangeable lens, wherein the mount adaptor is provided with a phase difference focus detection section which performs focus detection from a phase difference and an optical device which splits incident light from the interchangeable lens into incident light of the imaging device and incident light of the phase difference focus detection section, and the imaging apparatus is provided with a contrast focus detection section which performs focus detection from contrast using the imaging device, an adjustment section which adjusts the focus position of the phase difference focus detection section, and an adjustment control section which activates adjustment control of the focus position using detection of the mounting of the mount adaptor and the interchangeable lens.
    Type: Application
    Filed: October 28, 2011
    Publication date: June 28, 2012
    Applicant: SONY CORPORATION
    Inventors: Nobuharu MURASHIMA, Makibi NAKAMURA, Norihiko AKAMATSU
  • Publication number: 20120162492
    Abstract: An image pickup system includes an image pickup apparatus and a mount adaptor that adjusts a flange focal length between the image pickup apparatus and an interchangeable lens. The mount adaptor includes a phase-difference focus detection unit that can output a first phase-difference focus detection signal, and an optical device that separates first incident light into second and third incident light. The first incident light is transmitted from the interchangeable lens. The second incident light enters the image pickup apparatus. The third incident light enters the phase-difference focus detection unit. The image pickup apparatus includes an image pickup device that can output a second phase-difference focus detection signal, and a controller that selects either of the first phase-difference focus detection signal and the second phase-difference focus detection signal on the basis of satisfaction of a predetermined condition and performs focusing.
    Type: Application
    Filed: October 25, 2011
    Publication date: June 28, 2012
    Applicant: SONY CORPORATION
    Inventors: Norihiko Akamatsu, Yoshitaka Miyatani
  • Patent number: 8064762
    Abstract: An imaging apparatus includes: continuous imaging mode setting means for setting a continuous imaging mode in which a plurality of captured images including first and second captured images are continuously acquired; and diaphragm control means for controlling a diaphragm in an imaging optical system, wherein in the continuous imaging mode, the diaphragm control means does not drive the diaphragm during a first period from the time of exposure for the first captured image to the time of exposure for the second captured image but maintains the state of the diaphragm at the time of exposure for the first captured image until the time of exposure for the second captured image.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: November 22, 2011
    Assignee: Sony Corporation
    Inventors: Akifumi Mizukami, Hisamo Sogawa, Norihiko Akamatsu, Akio Kimba
  • Patent number: 7941041
    Abstract: An image pickup apparatus includes an imaging optical system; a display unit; a detecting unit performing focus detection in phase difference detection; a focusing unit performing focus control of a lens in the imaging optical system on the basis of the focus detection result; an imaging unit generating an image signal concerning an optical image of a subject; an electronic zoom unit zooming in or out the image of the subject displayed in the display unit on the basis of the image signal by performing signal processing; and a switching unit switching between an electronic zoom active state and an electronic zoom inactive state. The detecting unit includes a sensor unit including a first licensor and a second licensor; a setting unit that sets detection sections having the same section length in the first and second licensors; a focus detecting unit; and a section length controlling unit.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: May 10, 2011
    Assignee: Sony Corporation
    Inventors: Tsuyoshi Kishimoto, Hisamo Sogawa, Norihiko Akamatsu
  • Publication number: 20110052167
    Abstract: An image pickup apparatus includes an imaging optical system; a display unit; a detecting unit performing focus detection in phase difference detection; a focusing unit performing focus control of a lens in the imaging optical system on the basis of the focus detection result; an imaging unit generating an image signal concerning an optical image of a subject; an electronic zoom unit zooming in or out the image of the subject displayed in the display unit on the basis of the image signal by performing signal processing; and a switching unit switching between an electronic zoom active state and an electronic zoom inactive state. The detecting unit includes a sensor unit including a first licensor and a second licensor; a setting unit that sets detection sections having the same section length in the first and second licensors; a focus detecting unit; and a section length controlling unit.
    Type: Application
    Filed: November 4, 2010
    Publication date: March 3, 2011
    Applicant: Sony Corporation
    Inventors: Tsuyoshi Kishimoto, Hisamo Sogawa, Norihiko Akamatsu
  • Patent number: 7853136
    Abstract: An image pickup apparatus includes an imaging optical system; a display unit; a detecting unit performing focus detection in phase difference detection; a focusing unit performing focus control of a lens in the imaging optical system on the basis of the focus detection result; an imaging unit generating an image signal concerning an optical image of a subject; an electronic zoom unit zooming in or out the image of the subject displayed in the display unit on the basis of the image signal by performing signal processing; and a switching unit switching between an electronic zoom active state and an electronic zoom inactive state. The detecting unit includes a sensor unit including a first licensor and a second licensor; a setting unit that sets detection sections having the same section length in the first and second licensors; a focus detecting unit; and a section length controlling unit.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: December 14, 2010
    Assignee: Sony Corporation
    Inventors: Tsuyoshi Kishimoto, Hisamo Sogawa, Norihiko Akamatsu
  • Publication number: 20100284679
    Abstract: An imaging apparatus includes: continuous imaging mode setting means for setting a continuous imaging mode in which a plurality of captured images including first and second captured images are continuously acquired; and diaphragm control means for controlling a diaphragm in an imaging optical system, wherein in the continuous imaging mode, the diaphragm control means does not drive the diaphragm during a first period from the time of exposure for the first captured image to the time of exposure for the second captured image but maintains the state of the diaphragm at the time of exposure for the first captured image until the time of exposure for the second captured image.
    Type: Application
    Filed: April 16, 2010
    Publication date: November 11, 2010
    Applicant: SONY CORPORATION
    Inventors: Akifumi MIZUKAMI, Hisamo Sogawa, Norihiko Akamatsu, Akio Kimba
  • Publication number: 20090148147
    Abstract: An image-capturing apparatus includes an image-capturing optical system; a sensor unit having line sensors that receive light fluxes of an object, which have been transmitted through a pair of partial areas in an exit pupil of the image-capturing optical system; image-capturing elements having a pixel arrangement capable of generating an image signal and a focus detection pixel sequence, in which two or more pairs of pixels that receive the light fluxes of an object, are arranged in a predetermined direction; a continuous image-capturing unit configured to perform continuous image capturing of actually exposing the image-capturing elements; a signal generation unit configured to perform another exposure for the sensor unit; a first focus detection unit configured to perform focus detection of a phase-difference detection method; a second focus detection unit configured to perform focus detection; and a focus adjustment unit configured to perform focus adjustment.
    Type: Application
    Filed: November 25, 2008
    Publication date: June 11, 2009
    Applicant: Sony Corporation
    Inventors: Shinichi FUJII, Norihiko AKAMATSU
  • Publication number: 20090092386
    Abstract: An image pickup apparatus includes an imaging optical system; a display unit; a detecting unit performing focus detection in phase difference detection; a focusing unit performing focus control of a lens in the imaging optical system on the basis of the focus detection result; an imaging unit generating an image signal concerning an optical image of a subject; an electronic zoom unit zooming in or out the image of the subject displayed in the display unit on the basis of the image signal by performing signal processing; and a switching unit switching between an electronic zoom active state and an electronic zoom inactive state. The detecting unit includes a sensor unit including a first licensor and a second licensor; a setting unit that sets detection sections having the same section length in the first and second licensors; a focus detecting unit; and a section length controlling unit.
    Type: Application
    Filed: October 2, 2008
    Publication date: April 9, 2009
    Applicant: Sony Corporation
    Inventors: Tsuyoshi Kishimoto, Hisamo Sogawa, Norihiko Akamatsu
  • Publication number: 20090066830
    Abstract: An auto focus (AF) circuit includes a high-pass filter and band-pass filter having mutually different frequency characteristics. During contrast AF control prior to an actual shooting, AF evaluation values acquired by using the high-pass filter are used most preferentially in detecting the lens focusing position of a focus lens. In this way, the high-pass filter that emphasizes and extracts high frequency band components, which increase in image data when shooting a typical subject, is set to be used preferentially, thereby making it possible to perform high-precision focusing control with respect to various kinds of subjects.
    Type: Application
    Filed: January 16, 2007
    Publication date: March 12, 2009
    Applicant: SONY CORPORATION
    Inventors: Shinichi Fujii, Norihiko Akamatsu, Jun Aoyama, Dai Shintani, Hidekazu Nakajima