Patents by Inventor Haruko Magata

Haruko Magata 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).

  • Stereoscopic-vision endoscope offering a large angle of introversion and a necessary and sufficient sense of three-dimensionality
    Patent number: 5861987
    Abstract: A stereoscopic-vision endoscope of the present invention comprises a tubular elongated insertional part, an objective optical system situated in the insertional part, a relay optical system situated in the insertional part for transmitting an object image formed by the objective optical system, a pupil dividing stop for dividing a light beam emanating from an object image formed by the relay optical system into a plurality of portions, an image formation optical system for receiving light beams from the pupil dividing stop so as to form a plurality of object images having parallax, and imaging devices for picking up the object images formed by the image formation optical system. The relay optical system satisfies the condition .phi..sup.2 /L>0.43 (where .phi. denotes an outer diameter of a system of relay lenses, and L denotes a relay length of the relay optical system).
    Type: Grant
    Filed: August 23, 1995
    Date of Patent: January 19, 1999
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Shinichi Nakamura, Haruko Magata