Patents by Inventor Naotsugu Ogura

Naotsugu Ogura 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: 9753359
    Abstract: A projection apparatus includes a light source to emit a light beam, an image display element to provide image information to the light beam, and a noise reduction mechanism disposed between the light source and the image display element. The noise reduction mechanism includes an optical element to transmit the light beam emitted from the light source, a dielectric elastomer fixed to the optical element, and first and second electrodes provided on first and second surfaces of the dielectric elastomer, respectively. The dielectric elastomer is deformed in accordance with the application of a voltage across the first and second electrodes to moves the optical element.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: September 5, 2017
    Assignees: CASIO COMPUTER CO., LTD., TOYODA GOSEI CO., LTD.
    Inventors: Naotsugu Ogura, Kazumasa Baba, Hiromitsu Takeuchi
  • Patent number: 9671682
    Abstract: An excitation light source is configured to emit excitation light. A fluorescent substance plate is configured to be excited by the excitation light and to emit fluorescent substance light having a wavelength different from a wavelength of the excitation light. A condensing optical system is configured to condense the excitation light emitted from the excitation light source to an excitation light irradiation region that is smaller than the fluorescent substance plate, to apply the excitation light to the fluorescent substance plate, and to take in fluorescent substance emission light from the excitation light irradiation region. The excitation light is applied to the fluorescent substance plate such that the excitation light irradiation region is eccentric to the fluorescent substance plate.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: June 6, 2017
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Naotsugu Ogura
  • Patent number: 9405019
    Abstract: A fluorescent device includes a fluorescent material. The fluorescent material radiates emission light. The fluorescent material is irradiated with excitation light. The fluorescent material has a convex-concave shape. The convex-concave shape is provided on a surface different from an irradiation surface. The irradiation surface is irradiated with the excitation light.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: August 2, 2016
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Naotsugu Ogura
  • Patent number: 9335619
    Abstract: There is provided a luminescent light emitting device including a mirror layer, a luminescent material plate that is formed on one surface side of the mirror layer, and a conductive thin wire film in which a conductive thin wire is disposed and that lies on the other surface side of the mirror layer, in that luminescent light that is emitted by the luminescent material plate is emitted to the front that is one surface side of the luminescent material plate by the mirror layer, and damage done to the luminescent material plate is detected by a disconnection of the conductive thin wire.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: May 10, 2016
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Naotsugu Ogura
  • Publication number: 20160091728
    Abstract: A projection apparatus includes a light source to emit a light beam, an image display element to provide image information to the light beam, and a noise reduction mechanism disposed between the light source and the image display element. The noise reduction mechanism includes an optical element to transmit the light beam emitted from the light source, a dielectric elastomer fixed to the optical element, and first and second electrodes provided on first and second surfaces of the dielectric elastomer, respectively. The dielectric elastomer is deformed in accordance with the application of a voltage across the first and second electrodes to moves the optical element.
    Type: Application
    Filed: September 28, 2015
    Publication date: March 31, 2016
    Applicants: TOYODA GOSEI CO., LTD., CASIO COMPUTER CO., LTD.
    Inventors: Naotsugu OGURA, Kazumasa BABA, Hiromitsu TAKEUCHI
  • Publication number: 20160062222
    Abstract: An excitation light source is configured to emit excitation light. A fluorescent substance plate is configured to be excited by the excitation light and to emit fluorescent substance light having a wavelength different from a wavelength of the excitation light. A condensing optical system is configured to condense the excitation light emitted from the excitation light source to an excitation light irradiation region that is smaller than the fluorescent substance plate, to apply the excitation light to the fluorescent substance plate, and to take in fluorescent substance emission light from the excitation light irradiation region. The excitation light is applied to the fluorescent substance plate such that the excitation light irradiation region is eccentric to the fluorescent substance plate.
    Type: Application
    Filed: August 24, 2015
    Publication date: March 3, 2016
    Applicant: CASIO COMPUTER CO., LTD.
    Inventor: Naotsugu OGURA
  • Patent number: 9250505
    Abstract: A projector includes a light source unit, a light guiding device, a display device, a projection side optical system, and a projector control unit. The light source unit includes a light source which emits laser light in the wavelength band of blue, a light emitting wheel disposed on an optical axis of the light source, and a wheel motor for driving to rotate the light emitting wheel. The light emitting wheel is formed of a circular substrate having a diffusion layer on a predetermined surface thereof, the diffusion layer being made up of minute irregularities which are formed directly on a surface of the circular substrate.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: February 2, 2016
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Naotsugu Ogura
  • Patent number: 9200768
    Abstract: A light source unit includes an excitation light source, a plurality of light sources at least one of which emits a light ray in a wavelength band different from that of the excitation light source, a plurality of collimator lenses which make light rays from the light sources into parallel ones, a luminous light emitting device which receives the light ray from the excitation light source to emit a luminous light ray, a microlens array which diffuses the light rays from the light sources to a predetermined range and distributes the luminance thereof uniformly within the predetermined range and a collective lens which collects the light rays from the light sources which are emitted from the microlens array, and the light sources are disposed so that the light rays from the plurality of light sources intersect the light ray from the excitation light source at right angles.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: December 1, 2015
    Assignee: CASIO COMPUTER CO., LTD.
    Inventors: Naotsugu Ogura, Hideki Nakamura, Hideyuki Kurosaki, Tomoyuki Nagao, Makoto Sato, Hiroshi Ogino
  • Patent number: 9151471
    Abstract: A light source device includes a first light source, a fluorescent material, a second light source, and a synthesis member. The synthesis member includes a visible light reflecting film, and a transmitting window which is disposed in the visible light reflecting film to transmit the visible light. The second light source, the fluorescent material and the synthesis member are mutually arranged in such positional relations that the transmitting window is positioned along optical axis of light emitted from the second light source and that generated light emitted from the fluorescent material is reflected in an optical axis direction of the light emitted from the second light source by the visible light reflecting film.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: October 6, 2015
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Naotsugu Ogura
  • Patent number: 9134595
    Abstract: A phosphor device contains phosphor particles for emitting light beams, is shaped like a pyramid or cone and includes first and second faces opposed to each other and having different areas. The first face and the inclined faces have reflection layers configured to reflect light beams emitted from the phosphor particles. The second face a reflection preventing film and is an input face for excitation light and also an output face for the light beams. A first film is provided on the first face and parts of the incline faces, allows passage of excitation light and reflects light beams toward the second face.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: September 15, 2015
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Naotsugu Ogura
  • Publication number: 20150085262
    Abstract: There is provided a luminescent light emitting device including a mirror layer, a luminescent material plate that is formed on one surface side of the mirror layer, and a conductive thin wire film in which a conductive thin wire is disposed and that lies on the other surface side of the mirror layer, in that luminescent light that is emitted by the luminescent material plate is emitted to the front that is one surface side of the luminescent material plate by the mirror layer, and damage done to the luminescent material plate is detected by a disconnection of the conductive thin wire.
    Type: Application
    Filed: September 15, 2014
    Publication date: March 26, 2015
    Applicant: CASIO COMPUTER CO., LTD.
    Inventor: Naotsugu OGURA
  • Patent number: 8746896
    Abstract: A light source unit includes an excitation light source and a luminescent wheel on which luminescent light emitting areas including, on a reflecting surface, red and green luminescent materials which respectively emit light of red and green wavelength band, when receiving excitation light, and a diffuse transmission area which diffuses and transmits excitation light, are aligned end to end in a circumferential direction. An excitation light incident surface of a luminescent material layer of the luminescent wheel has a surface with a plurality of projecting bodies. Regular quadrangular pyramids are arranged thereon in a matrix with outer boundaries of bottom portions of adjacent regular quadrangular pyramids contacting each other. The pyramids rise at a rising angle of at least 30°, and a length of one side of an outer boundary of the bottom portion of the pyramid is between 10 and 100 ?m.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: June 10, 2014
    Assignees: Casio Computer Co., Ltd., Stanley Electric Co., Ltd.
    Inventors: Naotsugu Ogura, Hideki Nakamura, Takeshi Miyazaki, Osamu Umamine, Hiroki Masuda, Yasuyuki Kawakami
  • Patent number: 8733945
    Abstract: There is provided a light source unit comprising an excitation light shining device for emitting excitation light, a luminescent plate having a luminescent light emitting area on a base material and adapted to emit a luminescent light of a predetermined wavelength band by excitation light from the excitation shining device, two types of light source devices for emitting light of wavelength bands different from that of the light from the luminescent plate, a light guiding optical system for guiding the light from the luminescent plate and the rays from the light sources to a predetermined plane, and a light source control device for controlling the emission from the excitation light shining device and the light sources, wherein a synthetic light or a single-color light are emitted by controlling the emissions from the excitation light shining device and the light sources by the light source control device.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: May 27, 2014
    Assignee: Casio Computer Co., Ltd.
    Inventors: Hiroshi Ogino, Osamu Umamine, Hiroki Masuda, Masanori Ohta, Naotsugu Ogura, Mamoru Shibasaki, Hideyuki Kurosaki, Masahiro Ogawa
  • Publication number: 20130314672
    Abstract: A projector includes a light source unit, a light guiding device, a display device, a projection side optical system, and a projector control unit. The light source unit includes a light source which emits laser light in the wavelength band of blue, a light emitting wheel disposed on an optical axis of the light source, and a wheel motor for driving to rotate the light emitting wheel. The light emitting wheel is formed of a circular substrate having a diffusion layer on a predetermined surface thereof, the diffusion layer being made up of minute irregularities which are formed directly on a surface of the circular substrate.
    Type: Application
    Filed: August 5, 2013
    Publication date: November 28, 2013
    Applicant: Casio Computer Co., Ltd.
    Inventor: Naotsugu OGURA
  • Publication number: 20130250253
    Abstract: A light source device includes a first light source, a fluorescent material, a second light source, and a synthesis member. The synthesis member includes a visible light reflecting film, and a transmitting window which is disposed in the visible light reflecting film to transmit the visible light. The second light source, the fluorescent material and the synthesis member are mutually arranged in such positional relations that the transmitting window is positioned along optical axis of light emitted from the second light source and that generated light emitted from the fluorescent material is reflected in an optical axis direction of the light emitted from the second light source by the visible light reflecting film.
    Type: Application
    Filed: March 11, 2013
    Publication date: September 26, 2013
    Applicant: CASIO COMPUTER CO., LTD.
    Inventor: Naotsugu OGURA
  • Publication number: 20130250248
    Abstract: A fluorescent device includes a fluorescent material. The fluorescent material radiates emission light. The fluorescent material is irradiated with excitation light. The fluorescent material has a convex-concave shape. The convex-concave shape is provided on a surface different from an irradiation surface. The irradiation surface is irradiated with the excitation light.
    Type: Application
    Filed: March 11, 2013
    Publication date: September 26, 2013
    Applicant: CASIO COMPUTER CO., LTD.
    Inventor: Naotsugu OGURA
  • Publication number: 20130242267
    Abstract: A light source unit includes an excitation light source, a plurality of light sources at least one of which emits a light ray in a wavelength band different from that of the excitation light source, a plurality of collimator lenses which make light rays from the light sources into parallel ones, a luminous light emitting device which receives the light ray from the excitation light source to emit a luminous light ray, a microlens array which diffuses the light rays from the light sources to a predetermined range and distributes the luminance thereof uniformly within the predetermined range and a collective lens which collects the light rays from the light sources which are emitted from the microlens array, and the light sources are disposed so that the light rays from the plurality of light sources intersect the light ray from the excitation light source at right angles.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 19, 2013
    Applicant: CASIO COMPUTER CO., LTD.
    Inventors: Naotsugu OGURA, Hideki NAKAMURA, Hideyuki KUROSAKI, Tomoyuki NAGAO, Makoto SATO, Hiroshi OGINO
  • Patent number: 8523367
    Abstract: A projector includes a light source unit 63, a light guiding device 75, a display device, a projection side optical system and a projector control means, the light source unit 63 includes a light source 72 which emits laser light in the wavelength band of blue, a light emitting wheel 71 disposed on an optical axis of the light source 72 and a wheel motor 73 for driving to rotate the light emitting wheel 71, and the light emitting wheel 71 is formed of a circular substrate having a diffusion layer on a predetermined surface thereof, the diffusion layer being made up of minute irregularities which are formed directly on a surface of the circular substrate.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: September 3, 2013
    Assignee: Casio Computer Co., Ltd.
    Inventor: Naotsugu Ogura
  • Patent number: 8348435
    Abstract: There is provided a light source unit comprising an excitation light shining device for emitting excitation light, a luminescent plate having a luminescent light emitting area on a base material and adapted to emit a luminescent light of a predetermined wavelength band by excitation light from the excitation shining device, two types of light source devices for emitting light of wavelength bands different from that of the light from the luminescent plate, a light guiding optical system for guiding the light from the luminescent plate and the rays from the light sources to a predetermined plane, and a light source control device for controlling the emission from the excitation light shining device and the light sources, wherein a synthetic light or a single-color light are emitted by controlling the emissions from the excitation light shining device and the light sources by the light source control device.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: January 8, 2013
    Assignee: Casio Computer Co., Ltd.
    Inventors: Hiroshi Ogino, Osamu Umamine, Hiroki Masuda, Masanori Ohta, Naotsugu Ogura, Mamoru Shibasaki, Hideyuki Kurosaki, Masahiro Ogawa
  • Patent number: 8337027
    Abstract: A light source unit including an excitation light source for emitting light in a blue wavelength band, a fluorescent wheel, a light emitting device for emitting light in a red wavelength band and a light guiding optical system for guiding light emitted from the fluorescent wheel and the light emitting device to a light guiding device. The fluorescent wheel has a fluorescent area where a green fluorescent material layer for emitting fluorescent light in a green wavelength band is disposed and a diffuse area for converting light emitted from the excitation light source into diffuse light of which directivity is weak are disposed end to end in a circumferential direction. A concentration of weight content of the green fluorescent material and a thickness thereof are such that a luminescent intensity of fluorescent light emitted from the green fluorescent material layer is enhanced.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: December 25, 2012
    Assignees: Casio Computer Co., Ltd., Stanley Electric Co., Ltd.
    Inventors: Naotsugu Ogura, Masahiro Ogawa, Hideki Nakamura, Takeshi Miyazaki, Hiroki Masuda, Yasuyuki Kawakami