Patents by Inventor Hiroyasu Otsubo

Hiroyasu Otsubo 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: 20240062578
    Abstract: Provided is an imaging system capable of stereo-photographing with both of visible and infrared images, and improving color reproducibility in visible-light-photographing. The imaging system includes two imaging sensors, and two DBPFs that have transmittance characteristics in a visible light band and a second wavelength band, are respectively provided correspondingly to the two imaging sensors, and serve as optical filters. The imaging system has: at least four kinds of filters, which have mutual different spectral transmission characteristics corresponding to wavelengths in the visible light band and whose transmissions in a second wavelength band approximate each other; and two color filters provided so as respectively correspond to the two imaging sensors. The imaging system measures a distance to a target based on two visible or infrared image signals.
    Type: Application
    Filed: November 1, 2023
    Publication date: February 22, 2024
    Inventors: Osamu KAWAMAE, Chiyo OHNO, Hiroyasu OTSUBO, Osamu ISHIZAKI
  • Patent number: 11842564
    Abstract: Provided is an imaging system capable of stereo-photographing with both of visible and infrared images, and improving color reproducibility in visible-light-photographing. The imaging system includes two imaging sensors, and two DBPFs that have transmittance characteristics in a visible light band and a second wavelength band, are respectively provided correspondingly to the two imaging sensors, and serve as optical filters. The imaging system has: at least four kinds of filters, which have mutual different spectral transmission characteristics corresponding to wavelengths in the visible light band and whose transmissions in a second wavelength band approximate each other; and two color filters provided so as respectively correspond to the two imaging sensors. The imaging system measures a distance to a target based on two visible or infrared image signals.
    Type: Grant
    Filed: May 17, 2022
    Date of Patent: December 12, 2023
    Assignee: Maxell, Ltd.
    Inventors: Osamu Kawamae, Chiyo Ohno, Hiroyasu Otsubo, Osamu Ishizaki
  • Publication number: 20220277589
    Abstract: Provided is an imaging system capable of stereo-photographing with both of visible and infrared images, and improving color reproducibility in visible-light-photographing. The imaging system includes two imaging sensors, and two DBPFs that have transmittance characteristics in a visible light band and a second wavelength band, are respectively provided correspondingly to the two imaging sensors, and serve as optical filters. The imaging system has: at least four kinds of filters, which have mutual different spectral transmission characteristics corresponding to wavelengths in the visible light band and whose transmissions in a second wavelength band approximate each other; and two color filters provided so as respectively correspond to the two imaging sensors. The imaging system measures a distance to a target based on two visible or infrared image signals.
    Type: Application
    Filed: May 17, 2022
    Publication date: September 1, 2022
    Inventors: Osamu KAWAMAE, Chiyo OHNO, Hiroyasu OTSUBO, Osamu ISHIZAKI
  • Patent number: 11367309
    Abstract: Provided is an imaging system capable of stereo-photographing with both of visible and infrared images, and improving color reproducibility in visible-light-photographing. The imaging system includes two imaging sensors 1, and two DBPFs 5 that have transmittance characteristics in a visible light band and a second wavelength band, are respectively provided correspondingly to the two imaging sensors, and serve as optical filters. The imaging system has: at least four kinds of filters, which have mutual different spectral transmission characteristics corresponding to wavelengths in the visible light band and whose transmissions in a second wavelength band approximate each other; and two color filters provided so as respectively correspond to the two imaging sensors. The imaging system measures a distance to a target based on two visible or infrared image signals.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: June 21, 2022
    Assignee: MAXELL, LTD.
    Inventors: Osamu Kawamae, Chiyo Ohno, Hiroyasu Otsubo, Osamu Ishizaki
  • Publication number: 20210110188
    Abstract: A stereo imaging device is capable of detecting a target with a high precision, while photographing a wide range. The stereo imaging device has an imaging unit 5 including a lens and an imaging sensor. The lens has a low distortion region and a high distortion region, the low distortion region being a portion having a distortion smaller than a predetermined amount, the high distortion region being a portion having a distortion larger than the low distortion region. A cutout unit outputs an image from which a range including a detection target has been cut out from an area photographed through the low distortion region, such output being performed for image photographed by a pair of imaging units when a detection target is present within an area photographed through the low distortion region. A detection unit detects a detection target based on the cutout image.
    Type: Application
    Filed: April 23, 2019
    Publication date: April 15, 2021
    Inventor: Hiroyasu OTSUBO
  • Patent number: 10893248
    Abstract: An imaging sensor includes a color filter, and DBPF that has a transmission characteristic in a visible-light band, a blocking characteristic in a first wavelength band adjacent to a long-wavelength side of the visible-light band, and a transmission characteristic in a second wavelength band that is a part of the first wavelength band. A transmission characteristic of DBPF and a transmission characteristic of each filter part of the color filter are set in such a manner that the second wavelength band of DBPF is included in a third wavelength band that is a wavelength band in which transmittance of the filter parts in colors is approximate to each other on a long-wavelength side of the visible-light band and a fourth wavelength band that is a wavelength band in which a filter part for infrared light has a transmission characteristic.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: January 12, 2021
    Assignee: MAXELL, LTD.
    Inventors: Hiroyasu Otsubo, Osamu Ishizaki
  • Patent number: 10867400
    Abstract: An image processing system for reducing a calculation amount when calculating a parallax using an image of stereo photography. Reduced image data is generated by reducing image data respectively photographed by a plurality of cameras for stereo photographing, followed by reducing the number of pixels of image data. The image data and the reduced image data are stored in a memory. A plurality of reduced image data having the same photographing period are compared with each other to find a parallax. A parallax calculation region is set which includes the same position as a region where a parallax has been detected on reduced image data among a plurality of image data having the same photographing period. A parallax is calculated in the parallax calculation region of the image data formed before image reduction, and such parallax is used as a parallax of the image data formed before image reduction.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: December 15, 2020
    Assignee: MAXELL, LTD.
    Inventor: Hiroyasu Otsubo
  • Publication number: 20200154088
    Abstract: An imaging sensor includes a color filter, and DBPF that has a transmission characteristic in a visible-light band, a blocking characteristic in a first wavelength band adjacent to a long-wavelength side of the visible-light band, and a transmission characteristic in a second wavelength band that is a part of the first wavelength band. A transmission characteristic of DBPF and a transmission characteristic of each filter part of the color filter are set in such a manner that the second wavelength band of DBPF is included in a third wavelength band that is a wavelength band in which transmittance of the filter parts in colors is approximate to each other on a long-wavelength side of the visible-light band and a fourth wavelength band that is a wavelength band in which a filter part for infrared light has a transmission characteristic.
    Type: Application
    Filed: January 15, 2020
    Publication date: May 14, 2020
    Applicant: MAXELL, LTD.
    Inventors: Hiroyasu OTSUBO, Osamu ISHIZAKI
  • Publication number: 20200099914
    Abstract: A stereo imaging device includes a first image sensor and a second image sensor each capable of outputting a captured image signal. A monitoring signal and a parallax detection signal generating unit and a parallax detection signal generating unit are operated to generate two parallax detection signals for detecting a parallax from the two image signals of the two image sensors also generate, from an image signal fed from one of the two image sensors, a monitoring signal to be outputted to the monitor. The first reduction processing circuit reduces and outputs a monitoring signal at a preset reducing rate. The second reduction processing circuit performs a conversion on an arbitrary range of an image indicated by the parallax detection signal, so as to form an arbitrary reduction ratio, thus outputting a parallax detection signal.
    Type: Application
    Filed: May 24, 2018
    Publication date: March 26, 2020
    Applicant: MAXELL, LTD.
    Inventor: Hiroyasu OTSUBO
  • Patent number: 10582175
    Abstract: An imaging sensor includes a color filter, and DBPF that has a transmission characteristic in a visible-light band, a blocking characteristic in a first wavelength band adjacent to a long-wavelength side of the visible-light band, and a transmission characteristic in a second wavelength band that is a part of the first wavelength band. A transmission characteristic of DBPF and a transmission characteristic of each filter part of the color filter are set in such a manner that the second wavelength band of DBPF is included in a third wavelength band that is a wavelength band in which transmittance of the filter parts in colors is approximate to each other on a long-wavelength side of the visible-light band and a fourth wavelength band that is a wavelength band in which a filter part for infrared light has a transmission characteristic.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: March 3, 2020
    Assignee: MAXELL, LTD.
    Inventors: Hiroyasu Otsubo, Osamu Ishizaki
  • Publication number: 20190318495
    Abstract: An image processing system for reducing a calculation amount when calculating a parallax using an image of stereo photography. Reduced image data is generated by reducing image data respectively photographed by a plurality of cameras for stereo photographing, followed by reducing the number of pixels of image data. The image data and the reduced image data are stored in a memory. A plurality of reduced image data having the same photographing period are compared with each other to find a parallax. A parallax calculation region is set which includes the same position as a region where a parallax has been detected on reduced image data among a plurality of image data having the same photographing period. A parallax is calculated in the parallax calculation region of the image data formed before image reduction, and such parallax is used as a parallax of the image data formed before image reduction.
    Type: Application
    Filed: August 16, 2017
    Publication date: October 17, 2019
    Applicant: MAXELL, LTD.
    Inventor: Hiroyasu OTSUBO
  • Publication number: 20190163964
    Abstract: Provided is an imaging system capable of stereo-photographing with both of visible and infrared images, and improving color reproducibility in visible-light-photographing. The imaging system includes two imaging sensors 1, and two DBPFs 5 that have transmittance characteristics in a visible light band and a second wavelength band, are respectively provided correspondingly to the two imaging sensors, and serve as optical filters. The imaging system has: at least four kinds of filters, which have mutual different spectral transmission characteristics corresponding to wavelengths in the visible light band and whose transmissions in a second wavelength band approximate each other; and two color filters provided so as respectively correspond to the two imaging sensors. The imaging system measures a distance to a target based on two visible or infrared image signals.
    Type: Application
    Filed: June 3, 2016
    Publication date: May 30, 2019
    Inventors: Osamu KAWAMAE, Chiyo OHNO, Hiroyasu OTSUBO, Osamu ISHIZAKI
  • Patent number: 10257484
    Abstract: An imaging processing device and an imaging processing method that can solve a problem generated in visible light photographing in a case where DBPF is used instead of an infrared cut filter. An imaging sensor includes a color filter, and DBPH that has a transmission characteristic in a visible-light band, blocking characteristic in a first wavelength band adjacent to a long-wavelength side of the visible-light band, and transmission characteristic in a second wavelength band that is a part of the first wavelength band. A signal processing unit subtracts an infrared signal, which is output from an infrared pixel, from each color signal output from a pixel in each color of visible light in the imaging sensor. Here, in a case where each color signal reaches a pixel saturation level, control of performing correction in such a manner that an infrared signal subtracted from each color signal is lowered is performed.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: April 9, 2019
    Assignee: MAXELL, LTD.
    Inventors: Hiroyasu Otsubo, Osamu Ishizaki
  • Publication number: 20180270462
    Abstract: An imaging processing device and an imaging processing method that can solve a problem generated in visible light photographing in a case where DBPF is used instead of an infrared cut filter. An imaging sensor includes a color filter, and DBPH that has a transmission characteristic in a visible-light band, blocking characteristic in a first wavelength band adjacent to a long-wavelength side of the visible-light band, and transmission characteristic in a second wavelength band that is a part of the first wavelength band. A signal processing unit subtracts an infrared signal, which is output from an infrared pixel, from each color signal output from a pixel in each color of visible light in the imaging sensor. Here, in a case where each color signal reaches a pixel saturation level, control of performing correction in such a manner that an infrared signal subtracted from each color signal is lowered is performed.
    Type: Application
    Filed: May 3, 2018
    Publication date: September 20, 2018
    Applicant: MAXELL, LTD.
    Inventors: Hiroyasu OTSUBO, Osamu ISHIZAKI
  • Patent number: 9992469
    Abstract: An imaging processing device and an imaging processing method that can solve a problem generated in visible light photographing in a case where DBPF is used instead of an infrared cut filter. An imaging sensor includes a color filter, and DBPH that has a transmission characteristic in a visible-light band, blocking characteristic in a first wavelength band adjacent to a long-wavelength side of the visible-light band, and transmission characteristic in a second wavelength band that is a part of the first wavelength band. A signal processing unit subtracts an infrared signal, which is output from an infrared pixel, from each color signal output from a pixel in each color of visible light in the imaging sensor. Here, in a case where each color signal reaches a pixel saturation level, control of performing correction in such a manner that an infrared signal subtracted from each color signal is lowered is performed.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: June 5, 2018
    Assignee: HITACHI MAXELL, LTD.
    Inventors: Hiroyasu Otsubo, Osamu Ishizaki
  • Publication number: 20170150071
    Abstract: An imaging sensor includes a color filter, and DBPF that has a transmission characteristic in a visible-light band, a blocking characteristic in a first wavelength band adjacent to a long-wavelength side of the visible-light band, and a transmission characteristic in a second wavelength band that is a part of the first wavelength band. A transmission characteristic of DBPF and a transmission characteristic of each filter part of the color filter are set in such a manner that the second wavelength band of DBPF is included in a third wavelength band that is a wavelength band in which transmittance of the filter parts in colors is approximate to each other on a long-wavelength side of the visible-light band and a fourth wavelength band that is a wavelength band in which a filter part for infrared light has a transmission characteristic.
    Type: Application
    Filed: June 24, 2015
    Publication date: May 25, 2017
    Applicant: HITACHI MAXELL, LTD.
    Inventors: Hiroyasu OTSUBO, Osamu ISHIZAKI
  • Publication number: 20170134704
    Abstract: An imaging processing device and an imaging processing method that can solve a problem generated in visible light photographing in a case where DBPF is used instead of an infrared cut filter. An imaging sensor includes a color filter, and DBPH that has a transmission characteristic in a visible-light band, blocking characteristic in a first wavelength band adjacent to a long-wavelength side of the visible-light band, and transmission characteristic in a second wavelength band that is a part of the first wavelength band. A signal processing unit subtracts an infrared signal, which is output from an infrared pixel, from each color signal output from a pixel in each color of visible light in the imaging sensor. Here, in a case where each color signal reaches a pixel saturation level, control of performing correction in such a manner that an infrared signal subtracted from each color signal is lowered is performed.
    Type: Application
    Filed: June 24, 2015
    Publication date: May 11, 2017
    Applicant: HITACHI MAXELL, LTD.
    Inventors: Hiroyasu OTSUBO, Osamu ISHIZAKI
  • Patent number: 9547218
    Abstract: Provided is portable photography device capable of appropriately control an on/off state of a light source during photography, and reliably carrying out photography by a camera of a portable terminal when the light source is on. The portable photography device includes a smartphone with a camera, and a lens module including LEDs, having different wavelengths, a conversion lens, and light source control unit. The smartphone includes light on/off detection unit that detects the on/off state of each of the LEDs, photography control unit that controls photography by the camera, and display control unit that associates a photographed image taken by the camera with the LEDs, for display on the screen of the smartphone. As a result, it is possible to appropriately control the on/off state of the LEDs, during carrying out photography and reliably photographing skin with the camera of the smartphone.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: January 17, 2017
    Assignee: HITACHI MAXELL, LTD.
    Inventors: Takehiro Takahashi, Akito Sakemoto, Hiroyasu Otsubo
  • Publication number: 20150355527
    Abstract: Provided is portable photography device capable of appropriately control an on/off state of a light source during photography, and reliably carrying out photography by a camera of a portable terminal when the light source is on. The portable photography device includes a smartphone with a camera, and a lens module including LEDs, having different wavelengths, a conversion lens, and light source control unit. The smartphone includes light on/off detection unit that detects the on/off state of each of the LEDs, photography control unit that controls photography by the camera, and display control unit that associates a photographed image taken by the camera with the LEDs, for display on the screen of the smartphone. As a result, it is possible to appropriately control the on/off state of the LEDs, during carrying out photography and reliably photographing skin with the camera of the smartphone.
    Type: Application
    Filed: December 20, 2013
    Publication date: December 10, 2015
    Inventors: Takehiro TAKAHASHI, Akito SAKEMOTO, Hiroyasu OTSUBO
  • Patent number: 8463003
    Abstract: A biometric information acquisition apparatus includes: a light guide that guides a light beam through a plurality of light reflective surfaces; and an image pickup unit that receives the light beam output from the light guide and captures a subject image. The light guide includes an input surface that receives the subject image and is provided at a front surface side; a first light reflective surface that is opposed to the input surface and is provided at a back surface side; and a second light reflective surface that extends in a thickness direction of the light guide. A subject image can be acquired within a desired range by employing the light guide, while suppressing an increase in size of the biometric information acquisition apparatus.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: June 11, 2013
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Hiroyasu Otsubo, Akito Sakemoto, Masaki Yamazaki