Patents by Inventor Fumihiro Nakashige

Fumihiro Nakashige 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: 10401287
    Abstract: A lighting device includes: a light emitting device including a plurality of light emitting elements arranged in curve having a first curvature; and a honeycomb member having an extendable and contractible honeycomb structure, arranged in curve having a second curvature larger than the first curvature, in an emission direction of light emitted from the light emitting device.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: September 3, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Hitoshi Itoh, Fumihiro Nakashige, Kenji Kobayashi
  • Publication number: 20180209904
    Abstract: Alighting device includes: a light emitting device including a plurality of light emitting elements arranged in curve having a first curvature; and a honeycomb member having an extendable and contractible honeycomb structure, arranged in curve having a second curvature larger than the first curvature, in an emission direction of light emitted from the light emitting device.
    Type: Application
    Filed: January 26, 2018
    Publication date: July 26, 2018
    Inventors: Hitoshi ITOH, Fumihiro NAKASHIGE, Kenji KOBAYASHI
  • Patent number: 9524696
    Abstract: An image projection device includes: a drive control unit that generates colors sequentially; a setting unit that sets a color of an illumination image; an image capturing control unit that receives, from the drive control unit, a synchronization signal that specifies a timing at which light of a color closest to the set color of the illumination image is not projected and causes an image of a projection surface to be captured in accordance with the timing that is specified by the synchronization signal; an illumination image detection unit that detects, from captured image data, an illumination image that is produced by illuminating the projection surface by an illuminating device; and an illumination image generation unit that generates projection image data obtained by combining given image data at a position at which the illumination image is detected.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: December 20, 2016
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Otoichi Nakata, Fumihiro Nakashige, Shinichi Sumiyoshi
  • Patent number: 9470966
    Abstract: The present invention is concerning an image projection apparatus comprising: a projecting unit that projects and displays on a projection surface each image in a time sharing manner for each of a plurality of color components, for an input image signal; a shooting unit that shoots a projected image on the projection surface; a shoot control unit that makes the shooting unit perform the shooting, when a detection mode of a irradiation point at which light is irradiated from an irradiation device on the projection surface is set, in timing shifted by a certain amount of time from a synchronized state to time sharing timing of each color component in the projecting unit; and an irradiation-point-position detecting unit that detects, from a projected image projected by the projecting unit, a position of the irradiation point on the image.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: October 18, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Shinichi Sumiyoshi, Fumihiro Nakashige, Otoichi Nakata
  • Patent number: 9401129
    Abstract: An image projection device includes: a drive controller that causes generation of light of a specified color tone by a combination of light to be transmitted by a liquid crystal panel to project image data onto a projection plane; an image capturing controller that receives a synchronization signal that specifies a period in which the liquid crystal panel does not transmit light from the drive controller and causes capturing of an image of the projection plane according to the period that is specified by the synchronization signal; an illuminated image detector that detects, from the captured image of the image data, an illuminated image that is illuminated by an illuminating device on the projection plane; and an illuminated image generator that generates projection image data obtained by combining given image data in a position in which the illuminated image is detected.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: July 26, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Otoichi Nakata, Fumihiro Nakashige, Shinichi Sumiyoshi
  • Publication number: 20150049309
    Abstract: The present invention is concerning an image projection apparatus comprising: a projecting unit that projects and displays on a projection surface each image in a time sharing manner for each of a plurality of color components, for an input image signal; a shooting unit that shoots a projected image on the projection surface; a shoot control unit that makes the shooting unit perform the shooting, when a detection mode of a irradiation point at which light is irradiated from an irradiation device on the projection surface is set, in timing shifted by a certain amount of time from a synchronized state to time sharing timing of each color component in the projecting unit; and an irradiation-point-position detecting unit that detects, from a projected image projected by the projecting unit, a position of the irradiation point on the image.
    Type: Application
    Filed: August 7, 2014
    Publication date: February 19, 2015
    Inventors: Shinichi SUMIYOSHI, Fumihiro Nakashige, Otoichi Nakata
  • Publication number: 20150042701
    Abstract: An image projection device includes: a drive control unit that generates colors sequentially; a setting unit that sets a color of an illumination image; an image capturing control unit that receives, from the drive control unit, a synchronization signal that specifies a timing at which light of a color closest to the set color of the illumination image is not projected and causes an image of a projection surface to be captured in accordance with the timing that is specified by the synchronization signal; an illumination image detection unit that detects, from captured image data, an illumination image that is produced by illuminating the projection surface by an illuminating device; and an illumination image generation unit that generates projection image data obtained by combining given image data at a position at which the illumination image is detected.
    Type: Application
    Filed: July 31, 2014
    Publication date: February 12, 2015
    Inventors: Otoichi NAKATA, Fumihiro NAKASHIGE, Shinichi SUMIYOSHI
  • Publication number: 20150029173
    Abstract: An image projection device includes: a drive controller that causes generation of light of a specified color tone by a combination of light to be transmitted by a liquid crystal panel to project image data onto a projection plane; an image capturing controller that receives a synchronization signal that specifies a period in which the liquid crystal panel does not transmit light from the drive controller and causes capturing of an image of the projection plane according to the period that is specified by the synchronization signal; an illuminated image detector that detects, from the captured image of the image data, an illuminated image that is illuminated by an illuminating device on the projection plane; and an illuminated image generator that generates projection image data obtained by combining given image data in a position in which the illuminated image is detected.
    Type: Application
    Filed: July 14, 2014
    Publication date: January 29, 2015
    Inventors: Otoichi NAKATA, Fumihiro NAKASHIGE, Shinichi SUMIYOSHI
  • Patent number: 8634108
    Abstract: An image inspecting apparatus includes a first light illuminating unit that irradiates a measured object on which an image is formed with illuminating light from a diagonal direction; an imaging unit that receives specular light of the illuminating light with which the measured object is irradiated by the first light illuminating unit; and an image inspecting unit that inspects the image. The image inspecting unit generates gloss reference data from density distribution data included in print data used for forming the image by using a converting unit. The image inspecting unit inspects a gloss distribution of the image by using the gloss reference data and a gloss distribution of the image that is generated based on an amount of the specular light received by the imaging unit.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: January 21, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Keiji Kojima, Fumihiro Nakashige, Hitoshi Itoh
  • Patent number: 8587844
    Abstract: An image inspecting apparatus includes a first light illuminating unit irradiating a measured object on which an image is formed with light from an inclined direction; a second light illuminating unit irradiating the measured object with light from a different direction; an imaging unit receiving reflected light of the light with which the measured object is irradiated by the first light illuminating unit and the second light illuminating unit; a first and a second reference plate having a mirror surface and a diffuse surface, respectively; and an image inspecting unit inspecting a gloss distribution of the image based on the amount of light received by the imaging unit and a correcting coefficient.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: November 19, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Hitoshi Itoh, Fumihiro Nakashige, Keiji Kojima
  • Patent number: 8537421
    Abstract: An image processing apparatus includes a scanning unit configured to scan at least one of two surfaces of a printed material on both of which information is printed and to obtain a density image representing intensity distribution of diffuse reflection light from the scanned surface and a gloss image representing intensity distribution of specular reflection light from the scanned surface, a mask image generating unit configured to generate a mask image for the scanned surface based on the obtained gloss image, and a show-through removing unit configured to perform mask processing on the density image using the generated mask image to generate a show-through-removed image that does not include show-through information for the scanned surface.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: September 17, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Hitoshi Itoh, Fumihiro Nakashige, Keiji Kojima
  • Publication number: 20120113443
    Abstract: An image processing apparatus includes a scanning unit configured to scan at least one of two surfaces of a printed material on both of which information is printed and to obtain a density image representing intensity distribution of diffuse reflection light from the scanned surface and a gloss image representing intensity distribution of specular reflection light from the scanned surface, a mask image generating unit configured to generate a mask image for the scanned surface based on the obtained gloss image, and a show-through removing unit configured to perform mask processing on the density image using the generated mask image to generate a show-through-removed image that does not include show-through information for the scanned surface.
    Type: Application
    Filed: October 14, 2011
    Publication date: May 10, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Hitoshi ITOH, Fumihiro NAKASHIGE, Keiji KOJIMA
  • Patent number: 8169672
    Abstract: A disclosed image scanning device illuminates a document with a light source, focuses light reflected from the document on an image sensor to obtain one-dimensional images of the document, and obtains a two-dimensional image of the document from the one-dimensional images. The device includes an illumination lens for dividing a light beam emitted from the light source into multiple light beams and a combining unit for combining the multiple light beams on the document. A disclosed image scanning method includes the steps of illuminating a document with a light source; focusing light reflected from the document on an image sensor to obtain one-dimensional images of the document; and obtaining a two-dimensional image of the document from the one-dimensional images. In this method, a light beam from the light source is divided into multiple light beams and the multiple light beams are combined on the document. A disclosed image forming apparatus includes the image scanning device.
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: May 1, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Satoshi Yamauchi, Fumihiro Nakashige
  • Publication number: 20110304862
    Abstract: An image inspecting apparatus includes a first light illuminating unit irradiating a measured object on which an image is formed with light from an inclined direction; a second light illuminating unit irradiating the measured object with light from a different direction; an imaging unit receiving reflected light of the light with which the measured object is irradiated by the first light illuminating unit and the second light illuminating unit; a first and a second reference plate having a mirror surface and a diffuse surface, respectively; and an image inspecting unit inspecting a gloss distribution of the image based on the amount of light received by the imaging unit and a correcting coefficient.
    Type: Application
    Filed: May 27, 2011
    Publication date: December 15, 2011
    Applicant: Ricoh Company, Ltd.
    Inventors: Hitoshi Itoh, Fumihiro Nakashige, Keiji Kojima
  • Publication number: 20110279668
    Abstract: An image inspection device includes a first illuminating unit illuminating an object from an oblique direction with a first illuminating light; an imaging unit receiving specular reflection light of the first illuminating light from the object; and a focusing unit focusing the specular reflection light on the imaging unit. The image inspection device is configured to inspect the image based on the intensity of the specular reflection light received by the imaging unit. The first illuminating unit includes light-emitting elements and an illumination light producing unit that is configured to deflect light emitted from the light-emitting elements and thereby to produce the first illuminating light such that the specular reflection light from the object enters a pupil of the focusing unit.
    Type: Application
    Filed: April 4, 2011
    Publication date: November 17, 2011
    Applicant: RICOH COMPANY, LTD.
    Inventors: Fumihiro Nakashige, Keiji Kojima, Hitoshi Itoh
  • Publication number: 20110273732
    Abstract: An image inspecting apparatus includes a first light illuminating unit that irradiates a measured object on which an image is formed with illuminating light from a diagonal direction; an imaging unit that receives specular light of the illuminating light with which the measured object is irradiated by the first light illuminating unit; and an image inspecting unit that inspects the image. The image inspecting unit generates gloss reference data from density distribution data included in print data used for forming the image by using a converting unit. The image inspecting unit inspects a gloss distribution of the image by using the gloss reference data and a gloss distribution of the image that is generated based on an amount of the specular light received by the imaging unit.
    Type: Application
    Filed: April 28, 2011
    Publication date: November 10, 2011
    Applicant: Ricoh Company, Ltd.
    Inventors: Keiji Kojima, Fumihiro Nakashige, Hitoshi Itoh
  • Publication number: 20080316548
    Abstract: A disclosed image scanning device illuminates a document with a light source, focuses light reflected from the document on an image sensor to obtain one-dimensional images of the document, and obtains a two-dimensional image of the document from the one-dimensional images. The device includes an illumination lens for dividing a light beam emitted from the light source into multiple light beams and a combining unit for combining the multiple light beams on the document. A disclosed image scanning method includes the steps of illuminating a document with a light source; focusing light reflected from the document on an image sensor to obtain one-dimensional images of the document; and obtaining a two-dimensional image of the document from the one-dimensional images. In this method, a light beam from the light source is divided into multiple light beams and the multiple light beams are combined on the document. A disclosed image forming apparatus includes the image scanning device.
    Type: Application
    Filed: March 20, 2006
    Publication date: December 25, 2008
    Inventors: Satoshi Yamauchi, Fumihiro Nakashige
  • Patent number: 7342679
    Abstract: An image evaluation program is implemented in an image evaluation apparatus to evaluate a dot of an image that is reproduced on a support medium by an imaging apparatus and formed by a plurality of dots having a predetermined dimension arranged in a main scanning direction and a sub scanning direction. The image evaluation apparatus produces image signals at a resolution at least twice as high as a dot resolution of the image, and the image evaluation program is arranged to measure a dot position of each dot in the image.
    Type: Grant
    Filed: July 9, 2003
    Date of Patent: March 11, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Fumihiro Nakashige, Mitsumasa Nomoto
  • Patent number: 7158738
    Abstract: An image reader apparatus for lighting a manuscript surface of a manuscript in a line state, and for image-forming a reflection light from a reading part of the manuscript surface lighted in the line state, to an image sensor, by an image forming lens which forms a part of a scaled down optical system so that an image of the manuscript is read, includes an irradiation opening part and an optical element. The irradiation opening part is for irradiating a lighting light to an outside part, which is formed at the light source. The optical element for attenuating a light amount so as to be permeated, which is provided between the irradiation opening part and the manuscript stand.
    Type: Grant
    Filed: April 3, 2006
    Date of Patent: January 2, 2007
    Assignee: Ricoh Company, Ltd.
    Inventor: Fumihiro Nakashige
  • Publication number: 20060171742
    Abstract: An image reader apparatus for lighting a manuscript surface of a manuscript in a line state, and for image-forming a reflection light from a reading part of the manuscript surface lighted in the line state, to an image sensor, by an image forming lens which forms a part of a scaled down optical system so that an image of the manuscript is read, includes an irradiation opening part and an optical element. The irradiation opening part is for irradiating a lighting light to an outside part, which is formed at the light source. The optical element for attenuating a light amount so as to be permeated, which is provided between the irradiation opening part and the manuscript stand.
    Type: Application
    Filed: April 3, 2006
    Publication date: August 3, 2006
    Inventor: Fumihiro Nakashige