Patents by Inventor Masahiro Okaji

Masahiro Okaji 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).

  • Double-path interferometer
    Patent number: 4836678
    Abstract: A double-path interferometer comprises first and second polarized beam splitters disposed side by side on a light path from a light source, a half-wave plate interposed between the first and second polarized beam splitters, a cube corner prism, a reflecting mechanism disposed on the light path of the cube corner prism ahead of the two splitters, and a quarter-wave plate for causing a 90-degree rotation of the polarization plane in forward and backward light paths with respect to the reflecting mechanism.
    Type: Grant
    Filed: March 26, 1987
    Date of Patent: June 6, 1989
    Assignee: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventor: Masahiro Okaji