Patents by Inventor Lars Mendel

Lars Mendel 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 performing a contrast vision test
    Patent number: 7771052
    Abstract: The invention relates to a method for performing a contrast vision test on a subject in order to determine a contrast sensitivity function. According to said method, an image of a continuous sinusoidal grid is presented to the subject for viewing, the spatial frequency continuously changes in the direction of a first axis, and the contrast continuously changes in the direction of a second axis that extends perpendicular to the first axis. The subject's contrast sensitivity function is defined by means of a curve that encloses an area of the sinusoidal grid in which the subject perceives the sinusoidal grid pattern during viewing.
    Type: Grant
    Filed: September 10, 2005
    Date of Patent: August 10, 2010
    Assignee: Carl Zeiss Vision GmbH
    Inventors: Timo Kratzer, Erich Hofmann, Lars Mendel
  • Method For Performing a Contrast Vision Test
    Publication number: 20080137037
    Abstract: The invention relates to a method for performing a contrast vision test on a subject in order to determine a contrast sensitivity function. According to said method, an image of a continuous sinusoidal grid is presented to the subject for viewing, the spatial frequency continuously changes in the direction of a first axis, and the contrast continuously changes in the direction of a second axis that extends perpendicular to the first axis. The subject's contrast sensitivity function is defined by means of a curve that encloses an area of the sinusoidal grid in which the subject perceives the sinusoidal grid pattern during viewing.
    Type: Application
    Filed: September 10, 2005
    Publication date: June 12, 2008
    Inventors: Timo Kratzer, Erich Hofmann, Lars Mendel