Patents by Inventor Christoph Horneber

Christoph Horneber 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).

  • Photographic wide angle zoom objective of the retrofocus type
    Patent number: 7505211
    Abstract: Photographic wide angle zoom objective of the retrofocus type having a group of negative refractive power (VG?) comprising four lens components (L1, L2, L3, L4) and being a front group when seen from the object side, and having a rear group of positive refractive power (HG+) including six lens components (L5, L6, L7, L8, L9, L10) and facing an image plane, the distance between the rear group (HG+) and the image plane (BE) being increased, and the distance between the front group (VG?) and image plane (BE) being reduced, during an increase in the focal length, characterized in that the first two lens components (L1, L2) have a negative refractive power when seen from the object side in the light direction, the third and fourth lens components (L3, L4) are grouped into a cemented component with a positive total refractive power and the fifth lens component (L5) has a positive refractive power, the sixth and seventh lens components (L6, L7) are grouped into a cemented component with a positive total refractive p
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: March 17, 2009
    Assignee: Leica Camera AG
    Inventor: Christoph Horneber
  • PHOTOGRAPHIC WIDE ANGLE ZOOM OBJECTIVE OF THE RETROFOCUS TYPE
    Publication number: 20080068726
    Abstract: Photographic wide angle zoom objective of the retrofocus type having a group of negative refractive power (VG?) comprising four lens components (L1, L2, L3, L4) and being a front group when seen from the object side, and having a rear group of positive refractive power (HG+) including six lens components (L5, L6, L7, L8, L9, L10) and facing an image plane, the distance between the rear group (HG+) and the image plane (BE) being increased, and the distance between the front group (VG?) and image plane (BE) being reduced, during an increase in the focal length, characterized in that the first two lens components (L1, L2) have a negative refractive power when seen from the object side in the light direction, the third and fourth lens components (L3, L4) are grouped into a cemented component with a positive total refractive power and the fifth lens component (L5) has a positive refractive power, the sixth and seventh lens components (L6, L7) are grouped into a cemented component with a positive total refractive p
    Type: Application
    Filed: September 12, 2007
    Publication date: March 20, 2008
    Inventor: Christoph HORNEBER