Patents by Inventor Yuichi SAWAHATA

Yuichi SAWAHATA 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).

  • Color separation optical assembly and image capture device
    Patent number: 9696554
    Abstract: A color separation optical assembly (3) of an image capture device (1) includes, in order from a light incidence side, a first prism (10) which has a first dichroic film (D1) and extracts blue light (LB) reflected by the first dichroic film, a second prism (20) which has a second dichroic film (D2) and extracts red light (LR) transmitted through the first dichroic film and reflected by the second dichroic film, and a third prism (30) which extracts green light (LG) transmitted through the first and second dichroic films. The first dichroic film is a multiband dichroic film which reflects light of an infrared region from a long wavelength side of a red region.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: July 4, 2017
    Assignees: FUJIFILM Corporation, JAPAN BROADCASTING CORPORATION, IKEGAMI TSUSHINKI CO., LTD.
    Inventors: Arihiro Saita, Yuichi Sawahata, Kenichiro Masaoka, Yukihiro Nishida, Osamu Ozawa
  • COLOR SEPARATION OPTICAL ASSEMBLY AND IMAGE CAPTURE DEVICE
    Publication number: 20160178917
    Abstract: A color separation optical assembly (3) of an image capture device (1) includes, in order from a light incidence side, a first prism (10) which has a first dichroic film (D1) and extracts blue light (LB) reflected by the first dichroic film, a second prism (20) which has a second dichroic film (D2) and extracts red light (LR) transmitted through the first dichroic film and reflected by the second dichroic film, and a third prism (30) which extracts green light (LG) transmitted through the first and second dichroic films. The first dichroic film is a multiband dichroic film which reflects light of an infrared region from a long wavelength side of a red region.
    Type: Application
    Filed: February 26, 2016
    Publication date: June 23, 2016
    Applicants: FUJIFILM Corporation, Japan Broadcasting Corporation, IKEGAMI TSUSHINKI CO., LTD.
    Inventors: Arihiro SAITA, Yuichi SAWAHATA, Kenichiro MASAOKA, Yukihiro NISHIDA, Osamu OZAWA