Patents by Inventor Irmgard Gobl

Irmgard Gobl 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).

  • Pancratic objective
    Patent number: 4261648
    Abstract: An objective of the pancratic type includes a varifocal front lens group and a fixed-focus rear lens group, the latter consisting of five air-spaced singlets. The front lens group is constituted by a positive first component consisting of three singlets, an axially shiftable negative second component consisting of a singlet and a doublet, and an axially shiftable positive third component in the form of a nearly planoconvex singlet of low power.
    Type: Grant
    Filed: June 1, 1978
    Date of Patent: April 14, 1981
    Assignees: Karl Vockenhuber, Raimund Hauser
    Inventors: Irmgard Gobl, Trude Muszumanski, Franz J. Porscht
  • Camera objective of variable focal length
    Patent number: 4217033
    Abstract: A pancratic camera objective of varifocal ratio close to 5:1, and with a relative aperture varying between 1:1.2 in a wide-angle position and 1:1.5 in a telephoto position, has a pair of axially shiftable negative components bracketed by a pair of substantially fixed positive components. Its negative third component is more widely separated from its positive fourth component in the wide-angle position than in the telephoto position.
    Type: Grant
    Filed: June 23, 1978
    Date of Patent: August 12, 1980
    Assignees: Karl Vockenhuber, Raimund Hauser
    Inventor: Irmgard Gobl