Patents by Inventor Ilse Widmann

Ilse Widmann 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 of rapidly producing color changes in an optical light path
    Patent number: 6024453
    Abstract: A color wheel includes a rotatable disc-shaped carrier to which three or more planar color filter segments are secured in radial fashion about the periphery thereof. The portions of the color filter segments extending beyond the peripheral portion of the carrier form a substantially continuous translucent color ring for being inserted into, and rotated through, a light path. Each of the color filter segments is formed of a continuous sheet of material without any apertures formed therein. The disc-shaped carrier has one or more recesses, or bonding zones, formed therein to receive innermost bonding portions of the color filter segments; these recesses provide stops for aiding in the proper radial and axial positioning of the color filter segments. The bonding portions of the color filter segments are secured to the bonding zone of the disc-shaped carrier by an adhesive. A further recess can be formed in the disc-shaped carrier adjacent each bonding zone to receive the adhesive layer.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: February 15, 2000
    Assignee: Balzers Aktiengesellshaft
    Inventors: Johannes Edlinger, Manfred Kuster, Cosmas Malin, Ilse Widmann, Peter Wierer
  • Color wheel and picture generation unit with a color wheel
    Patent number: 5868482
    Abstract: A color wheel includes a rotatable disc-shaped carrier to which three or more planar color filter segments are secured in radial fashion about the periphery thereof. The portions of the color filter segments extending beyond the peripheral portion of the carrier form a substantially continuous translucent color ring for being inserted into, and rotated through, a light path. Each of the color filter segments is formed of a continuous sheet of material without any apertures formed therein. The disc-shaped carrier has one or more recesses, or bonding zones, formed therein to receive innermost bonding portions of the color filter segments; these recesses provide stops for aiding in the proper radial and axial positioning of the color filter segments. The bonding portions of the color filter segments are secured to the bonding zone of the disc-shaped carrier by an adhesive. A further recess can be formed in the disc-shaped carrier adjacent each bonding zone to receive the adhesive layer.
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: February 9, 1999
    Assignee: Balzers Aktiegesellschaft
    Inventors: Johannes Edlinger, Manfred Kuster, Cosmas Malin, Ilse Widmann, Peter Wierer