Patents by Inventor Masatsuga Itahashi

Masatsuga Itahashi 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).

  • Photoelectric conversion apparatus and method of manufacturing photoelectric conversion apparatus
    Patent number: 8754969
    Abstract: In a photoelectric conversion apparatus including a plurality of focus detection pixels, each focus detection pixel including a photoelectric conversion element, the photoelectric conversion element having a light receiving surface, and a plurality of wiring layers to read a signal supplied by the photoelectric conversion element, the photoelectric conversion apparatus further includes a light shielding film covering a part of the photoelectric conversion element and having the lower surface positioned closer to a plane, which includes a light receiving surface of the photoelectric conversion element and which is parallel to the light receiving surface, than a lower surface of the lowermost one of the plurality of wiring layers.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: June 17, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Seiichi Tamura, Mayu Ishikawa, Aiko Kato, Masatsuga Itahashi, Kouhei Hashimoto