Patents by Inventor Hermann Bucher

Hermann Bucher 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).

  • Process for microstructuring surfaces of oriented polymeric substratesusing laser radiation
    Patent number: 5529813
    Abstract: The current invention involves a process for microstructuring surfaces of oriented polymeric substrates using laser radiation having an intensity which is spatially modulated in a predetermined periodic manner. The process is especially useful for microstructuring the surfaces of textile products and films.
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: June 25, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Henry Kobsa, Hermann Bucher, Eckehard Onkels
  • Optical decoupling arrangement for laser beam
    Patent number: 5406571
    Abstract: A tunable laser oscillator, comprises a laser medium, an optical resonator, a wavelength selective element for adjusting the wavelength of a laser beam, and optical means for broadening the radiation in the resonator. The laser beam is decoupled from the resonator by means of an optical element after having passed the broadening means and prior to passing again through the laser medium. The laser beam is decoupled from the resonator such that its direction is independent of the beam wavelength.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: April 11, 1995
    Assignee: Lambda Gesellschaft zur Herstellung von Lasern mbH
    Inventors: Hermann Bucher, Harald Kneipp, Uwe Stamm
  • Method and apparatus for generating laser radiation having multiple wavelengths with synchronized and spatially overlapping beam propagation
    Patent number: 5210764
    Abstract: The present invention relates to a method and an apparatus for gerating pulsed laser radiation which contains components at several freely selectable wavelengths. Multi-wavelength emission is synchronized in time, propagates in a precise spatial overlap and has the same beam parameters on a common propagation direction. A preferred embodiment of an apparatus for a such method is a low pressure CO.sub.2 laser gas discharge in conjunction with a multi-wavelength resonator including a Q switch.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: May 11, 1993
    Assignee: Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.V.
    Inventors: Hermann Bucher, Werner Fuss, Wolfram E. Schmid
  • Tunable laser oscillator
    Patent number: 4399540
    Abstract: A tunable laser oscillator with a broadband emitting and thereby wavelength tunable laser medium. An optical resonator is provided for setting the wavelength of the laser radiation. Following the resonator is a device for spectral filtering and for producing a spectrally purer emitted laser radiation. An aperture is mounted in the path of the radiation following that device. The mechanism used for setting the wavelength of the laser radiation also forms the device for spectral filtering and for producing the spectrally purer emitted laser radiation. An optical arrangement is provided for feeding back the radiation leaving the resonator onto the joint mechanism and device.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: August 16, 1983
    Assignee: Lamba Physik Gesellschaft zur Herstellung von Lasern mbH & Co. KG
    Inventor: Hermann Bucher