Patents by Inventor Dieter Kalder

Dieter Kalder 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).

  • Method for representing optotypes, optotype representation, associated use and image output device
    Patent number: 10143369
    Abstract: Method for optotype representation (2) via an image output device (4) for a visual acuity test and/or determination of a refraction, with optotypes (10) being displayed in a three-dimensional image (6) and an image separation occurring in such a way that the optotypes (10) are monocularly discernible in binocular conditions, wherein the three-dimensional image (6) is binocularly discernible.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: December 4, 2018
    Assignee: IPRO GmbH
    Inventors: Dieter Kalder, Fritz Passmann
  • METHOD FOR REPRESENTING OPTOTYPES, OPTOTYPE REPRESENTATION, ASSOCIATED USE AND IMAGE OUTPUT DEVICE
    Publication number: 20170164822
    Abstract: Method for optotype representation (2) via an image output device (4) for a visual acuity test and/or determination of a refraction, with optotypes (10) being displayed in a three-dimensional image (6) and an image separation occurring in such a way that the optotypes (10) are monocularly discernible in binocular conditions, wherein the three-dimensional image (6) is binocularly discernible.
    Type: Application
    Filed: November 17, 2014
    Publication date: June 15, 2017
    Inventors: Dieter KALDER, Fritz PASSMANN
  • Multifocal lens
    Patent number: 4955712
    Abstract: A multifocal lens is described with a main lens designed for distance vision and a segment designed for near vision.The lens in accordance with the present invention is characterized by the fact that one surface of the segment consists of the progression area and the reading portion of a progressive surface.In an advantageous further development the progressive surface whose progression area and reading portion form one surface of the segment is designed in such a way that its surface astigmatism is concentrated essentially in the distance portion.
    Type: Grant
    Filed: July 18, 1989
    Date of Patent: September 11, 1990
    Assignee: Optische werke G. Rodenstock
    Inventors: Rudolf Barth, Gunther Guilino, Dieter Kalder