Patents by Inventor Ole Jespersen

Ole Jespersen 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).

  • Transmission spectrometer with improved spectral and temperature characteristics
    Patent number: 7180590
    Abstract: Transmission spectrometers require low levels of background light so that the signal to noise ratio is increased, and also require stable performance over wide temperature ranges. Light reflected by the transmission grating can result in increased background levels. One approach to reducing the background level is to orient the transmissive diffraction grating so that light reflected by the grating is reflected out of the diffraction plane. The temperature-induced wavelength drift of a transmission spectrometer can be due to the frame upon which the transmission grating is mounted. The wavelength drift is reduced by allowing the thermal expansion of the grating to be independent of the frame.
    Type: Grant
    Filed: July 9, 2003
    Date of Patent: February 20, 2007
    Assignee: Ibsen Photonics A/S
    Inventors: Jens Bastue, Nicolai Herholdt-Rasmussen, Michael Rasmussen, Ole Jespersen
  • Transmission spectrometer with improved spectral and temperature characteristics
    Publication number: 20050007586
    Abstract: Transmission spectrometers require low levels of background light so that the signal to noise ratio is increased, and also require stable performance over wide temperature ranges. Light reflected by the transmission grating can result in increased background levels. One approach to reducing the background level is to orient the transmissive diffraction grating so that light reflected by the grating is reflected out of the diffraction plane. The temperature-induced wavelength drift of a transmission spectrometer can be due to the frame upon which the transmission grating is mounted. The wavelength drift is reduced by allowing the thermal expansion of the grating to be independent of the frame.
    Type: Application
    Filed: July 9, 2003
    Publication date: January 13, 2005
    Applicant: Ibsen Photonics A/S
    Inventors: Jens Bastue, Nicolai Herholdt-Rasmussen, Michael Rasmussen, Ole Jespersen