Patents by Inventor Noritugu Nozawa

Noritugu Nozawa 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).

  • Apparatus for measuring interpupilary distance of mounted spectacles
    Patent number: 5152067
    Abstract: A lens meter for measuring the optical character of spectacle lenses by projecting a measurement target onto the spectacle lens comprises a first position control member for moving a spectacle frame in a horizontal direction, and a second position control member for moving the spectacles in a direction perpendicular to the direction of the first position control member. The position of the second position control member is detected by a potentiometer, and the pupilary distance is calculated based on the distances from the second position control member to the bridge center of the spectacle frame and to each lens optical center on the spectacle frame.
    Type: Grant
    Filed: February 27, 1992
    Date of Patent: October 6, 1992
    Assignee: Nidek Co., Ltd.
    Inventors: Mikio Kurachi, Toshiaki Mizuno, Noritugu Nozawa