Patents by Inventor Hansueli Walther

Hansueli Walther 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).

  • Patent number: 6612700
    Abstract: A perimeter for visual examination has a head restraint and a control panel. Located on a unit base is an optical system, in which there is an optical examination system with an eyepiece. The optical system is movably mounted on the unit base and can be adjusted by means of at least one drive. The optical system can be tracked for precise positioning with respect to the eye being examined. The perimeter makes it possible to position the optical system in essentially any desired position.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: September 2, 2003
    Assignee: Interzeag AG
    Inventor: Hansueli Walther
  • Publication number: 20020047995
    Abstract: A perimeter for visual examination has a head restraint and a control panel. Located on a unit base is an optical system, in which there is an optical examination system with an eyepiece. The optical system is movably mounted on the unit base and can be adjusted by means of at least one drive. The optical system can be tracked for precise positioning with respect to the eye being examined. The perimeter makes it possible to position the optical system in essentially any desired position.
    Type: Application
    Filed: August 27, 2001
    Publication date: April 25, 2002
    Applicant: INTERZEAG AG
    Inventor: Hansueli Walther
  • Publication number: 20020005934
    Abstract: For purposes of examination, the human eye at a defined viewing point is oriented along a viewing axis. Using means associated with a first light source, stimuli are generated at selectable locations on the background of the viewing axis. Using a second light source, a homogeneous background light is generated around the viewing axis. The second light source has at least one LED. This LED can be actuated as required so that it generates a constant background light or a flickering background light. If at least two LEDs are used, the one LED can generate a colored background light by means of a fixed colored filter. No moving parts are necessary for the generation of a flickering background light, nor any means for the active cooling of the second light source.
    Type: Application
    Filed: July 12, 2001
    Publication date: January 17, 2002
    Applicant: INTERZEAG AG
    Inventors: Hansueli Walther, Beat Gisler