Patents by Inventor Jan Stefka

Jan Stefka 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).

  • Multi-focal lens for bi-functional headlamp
    Patent number: 7357545
    Abstract: The headlamp assembly having low beam and high beam operation modes includes a light source, a reflector surface adapted to reflect light from the light source outward to a condenser lens positioned at a distance from the light source. An opaque shield is positioned between the light source and the condenser lens and is moveable between a first position, where a portion of the reflected light is blocked from reaching the condenser lens, and a second position, where substantially all of the reflected light is allowed to reach the condenser lens. The condenser lens has a first segment and a second segment wherein, when the opaque shield is in the first position, light is reflected almost entirely to the first segment of the condenser lens, and when the opaque shield is in the second position, light is reflected to the first and second segments of the condenser lens.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: April 15, 2008
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Jan Stefka, Marek Olivik, David Hynar, Tomas Kreml
  • Multi-focal lens for bi-functional headlamp
    Publication number: 20070035961
    Abstract: The headlamp assembly having low beam and high beam operation modes includes a light source, a reflector surface adapted to reflect light from the light source outward to a condenser lens positioned at a distance from the light source. An opaque shield is positioned between the light source and the condenser lens and is moveable between a first position, where a portion of the reflected light is blocked from reaching the condenser lens, and a second position, where substantially all of the reflected light is allowed to reach the condenser lens. The condenser lens has a first segment and a second segment wherein, when the opaque shield is in the first position, light is reflected almost entirely to the first segment of the condenser lens, and when the opaque shield is in the second position, light is reflected to the first and second segments of the condenser lens.
    Type: Application
    Filed: August 10, 2005
    Publication date: February 15, 2007
    Inventors: Jan Stefka, Marek Olivik, David Hynar, Tomas Kreml