Patents by Inventor Fritz Spellitz

Fritz Spellitz 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).

  • Optical system for measuring the human cornea
    Patent number: 5243367
    Abstract: An optical system for measuring the human cornea includes a light source, a scanner, an optical deflecting system, a sensor and an evaluating unit. A rotating mirror is used as the scanner and a plurality of stationary plane deflecting mirrors are arranged in the path of the rotating light beam. With increasing distance of the deflecting mirrors from the eye, the deflecting mirrors direct the light beam onto points of the cornea surface which are located increasingly closely to the frontmost point of the cornea.
    Type: Grant
    Filed: July 23, 1991
    Date of Patent: September 7, 1993
    Inventor: Fritz Spellitz