Patents by Inventor Akihiko Nagano

Akihiko Nagano 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: 7294819
    Abstract: Light incident on a microlens at a large incident angle can be efficiently guided to a photo-electric converting portion in a solid state image sensor. In a solid state image sensor having a plurality of pixels, each of the plurality of pixels includes a microlens which condenses light, a photo-electric converting portion which photoelectrically converts light condensed by the microlens, a metal electrode layer which is interposed between the microlens and the photo-electric converting portion and has an opening at a position corresponding to the optical path of light traveling from the microlens toward the photo-electric converting portion, and a transparent film layer which is interposed between the microlens and the photo-electric converting portion and has a convex lens-shaped portion that is convex on the microlens side.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: November 13, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akihiko Nagano
  • Patent number: 7245324
    Abstract: An image pickup element comprising a plurality of pixels, each including a photoelectric conversion section and a wavelength selection section for transmitting to the photoelectric conversion section light of a predetermined wavelength range, wherein the wavelength selection section has a vertex, and wherein, for a pixel located in the peripheral portion of the image pickup element, the vertex of the wavelength selection section is located closer to the center of the image pickup element than to the center of the photoelectric conversion section.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: July 17, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Eriko Namazue, Akihiko Nagano, Hideki Dobashi
  • Patent number: 7119319
    Abstract: A solid-state image sensing element has a photoelectric conversion element which converts incoming light into an electrical signal in accordance with an amount of the light, a microlens which is arranged on an incident surface, a light guide which is arranged between the photoelectric conversion element and the microlens, and an insulating interlayer which is arranged around the light guide.
    Type: Grant
    Filed: April 6, 2005
    Date of Patent: October 10, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Goro Noto, Yasuo Suda, Akihiko Nagano
  • Patent number: 7095441
    Abstract: An image pick-up apparatus includes a plurality of pixels, each of which includes a photoelectrically converting area for converting an optical signal from a subject into an electronic signal. A plurality of first pixels included in the plurality of pixels have a first transmittance as a light transmittance to the photoelectrically converting area, and a plurality of second pixels included in the plurality of pixels have a second transmittance as a light transmittance to the photoelectrically converting area. The second transmittance is higher than the first transmittance, and a light receiving area for receiving light of each of the plurality of first pixels is larger than a light receiving area for receiving light of each pixel of the plurality of second pixels.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: August 22, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akihiko Nagano
  • Publication number: 20060157642
    Abstract: According to this invention, light incident on a microlens at a large incident angle can be efficiently guided to a photo-electric converting portion in a solid state image sensor. In a solid state image sensor having a plurality of pixels, each of the plurality of pixels includes a microlens which condenses light, a photo-electric converting portion which photoelectrically converts light condensed by the microlens, a metal electrode layer which is interposed between the microlens and the photo-electric converting portion and has an opening at a position corresponding to the optical path of light traveling from the microlens toward the photo-electric converting portion, and a transparent film layer which is interposed between the microlens and the photo-electric converting portion and has a convex lens-shaped portion that is convex on the microlens side. At least part of the convex lens-shaped portion in the direction of thickness extends into the opening formed in the metal electrode layer.
    Type: Application
    Filed: January 19, 2006
    Publication date: July 20, 2006
    Inventor: Akihiko Nagano
  • Patent number: 7060961
    Abstract: An image sensing element having a high refractive index part that covers at least a portion of each of a plurality of photoelectric converters arranged in one or two dimensions and a low refractive index part provided on the periphery of the high refractive index part. The interface between the high refractive index part and the low refractive index part has a surface that is substantially parallel to the optical axis of an image sensing lens and a slanted surface having an angle that differs from that of the parallel surface. The slanted surface is disposed on a portion of a surface near the optical axis of the image sensing lens, the portion being on a side that light rays from the image sensing lens enters the image sensing element.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: June 13, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideki Dobashi, Akihiko Nagano, Kouichirou Okumura
  • Publication number: 20060120710
    Abstract: There is provided an optical apparatus that provides quick and precise TTL phase difference detection and pupil slicing focus detection. An optical apparatus includes a first optical element for splitting a first polarized light component contained in light that passes an exit pupil of a first optical system and directs to a photoelectric conversion element so that the first polarized light component direct to different light-receiving areas on the photoelectric conversion element. The optical apparatus may further include a second optical element for separating a second polarized light component contained in the light from said first optical element, from the first polarized light component.
    Type: Application
    Filed: October 5, 2005
    Publication date: June 8, 2006
    Inventors: Akihiko Nagano, Makoto Takamiya, Koichi Washisu
  • Patent number: 7041950
    Abstract: This invention realizes high-precision exposure regardless of the F-number of an image sensing lens in photography. One pixel includes a first light-receiving region (119c) which includes a region where the principal ray of an image sensing lens is incident, and second light-receiving regions (119a, 119b) which do not include the region where the principal ray of the image sensing lens is incident. The first light-receiving region (119c) is sandwiched between the two second light-receiving regions (119a, 119b).
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: May 9, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akihiko Nagano
  • Publication number: 20050236553
    Abstract: A solid-state image sensing element has a photoelectric conversion element which converts incoming light into an electrical signal in accordance with an amount of the light, a microlens which is arranged on an incident surface, a light guide which is arranged between the photoelectric conversion element and the microlens, and an insulating interlayer which is arranged around the light guide.
    Type: Application
    Filed: April 6, 2005
    Publication date: October 27, 2005
    Applicant: Canon Kabushiki Kaisha
    Inventors: Goro Noto, Yasuo Suda, Akihiko Nagano
  • Publication number: 20050139750
    Abstract: An image sensing element having a high refractive index part that covers at least a portion of each of a plurality of photoelectric converters arranged in one or two dimensions and a low refractive index part provided on the periphery of the high refractive index part. The interface between the high refractive index part and the low refractive index part has a surface that is substantially parallel to the optical axis of an image sensing lens and a slanted surface having an angle that differs from that of the parallel surface. The slanted surface is disposed on a portion of a surface near the optical axis of the image sensing lens, the portion being on a side that light rays from the image sensing lens enters the image sensing element.
    Type: Application
    Filed: December 10, 2004
    Publication date: June 30, 2005
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hideki Dobashi, Akihiko Nagano, Kouichirou Okumura
  • Publication number: 20040004668
    Abstract: An image pickup element comprising a plurality of pixels, each including a photoelectric conversion section and a wavelength selection section for transmitting to the photoelectric conversion section light of a predetermined wavelength range, wherein the wavelength selection section has a vertex, and wherein, for a pixel located in the peripheral portion of the image pickup element, the vertex of the wavelength selection section is located closer to the center of the image pickup element than to the center of the photoelectric conversion section.
    Type: Application
    Filed: February 28, 2003
    Publication date: January 8, 2004
    Applicant: Canon Kabushiki Kaisha
    Inventors: Eriko Namazue, Akihiko Nagano, Hideki Dobashi
  • Publication number: 20030086008
    Abstract: An image pick-up apparatus includes a plurality of pixels, each of which includes a photoelectrically converting area for converting an optical signal from a subject into an electronic signal. A plurality of first pixels included in the plurality of pixels have a first transmittance as a light transmittance to the photoelectrically converting area, and a plurality of second pixels included in the plurality of pixels have a second transmittance as a light transmittance to the photoelectrically converting area. The second transmittance is higher than the first transmittance, and a light receiving area for receiving light of each of the plurality of first pixels is larger than a light receiving area for receiving light of each pixel of the plurality of second pixels.
    Type: Application
    Filed: October 24, 2002
    Publication date: May 8, 2003
    Applicant: Canon Kabushiki Kaisha
    Inventor: Akihiko Nagano
  • Patent number: 6518940
    Abstract: An image display apparatus includes a storage display element which stores an image by receiving image light from a film frame and displays the stored image, a display device capable of selectively displaying one of a film frame number and information other than the film frame number, and a control circuit which inhibits an image storing action on the storage display element when no film frame number is displayed by the display device.
    Type: Grant
    Filed: February 18, 1999
    Date of Patent: February 11, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akihiko Nagano
  • Publication number: 20020125409
    Abstract: This invention realizes high-precision exposure regardless of the F-number of an image sensing lens in photography. One pixel includes a first light-receiving region (119c) which includes a region where the principal ray of an image sensing lens is incident, and second light-receiving regions (119a, 119b) which do not include the region where the principal ray of the image sensing lens is incident. The first light-receiving region (119c) is sandwiched between the two second light-receiving regions (119a, 119b).
    Type: Application
    Filed: February 25, 2002
    Publication date: September 12, 2002
    Inventor: Akihiko Nagano
  • Publication number: 20020050957
    Abstract: An image display apparatus includes a storage display element which stores an image by receiving image light from a film frame and displays the stored image, a display device capable of selectively displaying one of a film frame number and information other than the film frame number, and a control circuit which inhibits an image storing action on the storage display element when no film frame number is displayed by the display device.
    Type: Application
    Filed: February 18, 1999
    Publication date: May 2, 2002
    Inventor: AKIHIKO NAGANO
  • Patent number: 6229959
    Abstract: An optical apparatus includes a projecting optical system for projecting an image of an object in a viewfield onto an image receiving surface. First detecting structure is provided for detecting which position is viewed in the viewfield. Second detecting structure is provided for detecting a defocus for the image receiving surface of the image of the object. Optical system driving structure is provided for driving a portion of the projecting optical system according to the defocus detected by the second detecting structure. A processor is provided for causing the detection by said second detecting structure and the drive by said optical system driving structure to be repeated until the image of the object is focused on the image receiving surface.
    Type: Grant
    Filed: June 26, 1997
    Date of Patent: May 8, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuo Suda, Akihiko Nagano, Kazuki Konishi
  • Patent number: 6222509
    Abstract: An image display apparatus having a storage/display element for receiving writing light indicative of an image obtained from an original, storing the image and displaying the stored image, includes a light detecting mechanism for detecting light which has an influence on writing, and a determining circuit for determining an image storage operation condition for the storage/display element according to an amount of light detected by the light detecting mechanism.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: April 24, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshifumi Ohsawa, Akihiko Nagano
  • Patent number: 6091899
    Abstract: A camera operating in a plurality of photographing modes is provided with an image receiver for receiving the optical image of an object, a viewfinder for observing the object therethrough, a display device for displaying the photographing modes in visually recognizable characters so that they can be seen through the viewfinder, detecting means for detecting the direction of the visual axis of the photographer gazing at desired one of the characters, means for causing the photographer to recognize the completion of the selection of the photographing mode, and a controller for setting the camera to the selected photographing mode in conformity with the result of the detection by the detecting means, and controlling the camera in the selected photographing mode.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: July 18, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuki Konishi, Akihiko Nagano, Tokuichi Tsunekawa
  • Patent number: 6040880
    Abstract: A display device includes a spatial light modulator capable of writing therein an image and capable of reading therefrom the written image by converting the image, and an illumination device which transmissively illuminates the spatial light modulator through respective different paths for writing the image and for reading the image.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: March 21, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Tsuboi, Mineto Yagyu, Akihiko Nagano, Hiroshi Kikuchi
  • Patent number: 6014524
    Abstract: A camera comprising: finder means for inspecting an object, illumination means for illuminating an operator's eye by which the operator looks in at the finder means, a condensing optical system for condensing a reflected light from the operator's eye, photoelectric converter means for receiving the condensed reflected light, calculation means for calculating a direction of a visual axis of the operator's eye on the basis of an output of the photoelectric converter means, and condition setting means operable in response to the result of the calculation of the calculation means, for setting taking conditions of the camera.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: January 11, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Suzuki, Akira Ishizaki, Keiji Ohtaka, Yasuo Suda, Hidehiko Fukahori, Akihiko Nagano, Kazuki Konishi, Tokuichi Tsunekawa