Patents by Inventor Ryuji Omuro

Ryuji Omuro 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: 6342980
    Abstract: A beam splitting prism system includes, at least, a first prism for extracting a first light beam along an advancing direction of a light beam coming from an objective lens, an air separation, and a second prism having a predetermined apical angle and having a reflecting surface for extracting a second light beam, wherein the second prism is arranged to cause the second light beam reflected by the reflecting surface to be totally reflected by a surface of the second prism adjacent to the air separation and then exit from the second prism, and the apical angle of the second prism is set such that interference fringes which occur due to reflection of the second light beam by a solid-state image sensor disposed within the optical path of the second light beam do not overlap in a central portion of an image plane of the solid-state image sensor disposed within the optical path of the second light beam.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: January 29, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ryuji Omuro