Patents Assigned to Yoichi Fuji
  • Method and apparatus for measuring electric quantities by using light converters
    Patent number: 4117399
    Abstract: To a light converter including an optical effect element is applied an electric input having an amplitude exceeding the linear region of the characteristic of the light converter. The number of the peaks of the output reaching a maximum amplitude is added to the magnitude of a peak of the output not reaching the maximum amplitude thereby measuring the magnitude of the input. Two or more light converters with differential or cumulative inputs may be used.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: September 26, 1978
    Assignees: Yutaka Ono, Yoichi Fuji, Goro Eto
    Inventors: Yutaka Ono, Yoichi Fujii, Koji Yokoyama, Toshifumi Igarashi