Patents by Inventor Erik Nackerud

Erik Nackerud 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).

  • Patent number: 9784957
    Abstract: In a line projector a diode-laser beam having an elliptical cross-section is projected onto a Powell lens which spreads the beam to form a line of light. Distribution of power along the line of light is adjusted by rotating the diode-laser beam with respect to the Powell lens.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: October 10, 2017
    Assignee: Coherent, Inc.
    Inventors: Erik Nackerud, Jimson Lounsbury, Patrick Kain
  • Publication number: 20170146804
    Abstract: An apparatus comprising a human vision solid state display filter material with a first and a second surface with a semitransparent material between. The first surface, the second surface, the semitransparent material or combinations thereof have a spectral pass-band and an off-band, the pass-band comprising at least three spectrally discrete bands that overlap with emission peaks from a solid state display and the off-band rejecting a portion of the human visible spectrum. Wherein a transmitted ratio of the pass-band to the off-band increases human visual perception of the solid state display when viewed under ambient light conditions.
    Type: Application
    Filed: November 25, 2016
    Publication date: May 25, 2017
    Applicant: Tidal Optics LLC
    Inventors: Erik Nackerud, Doug Childers
  • Publication number: 20160320626
    Abstract: In a line projector a diode-laser beam having an elliptical cross-section is projected onto a Powell lens which spreads the beam to form a line of light. Distribution of power along the line of light is adjusted by rotating the diode-laser beam with respect to the Powell lens.
    Type: Application
    Filed: July 11, 2016
    Publication date: November 3, 2016
    Inventors: Erik NACKERUD, Jimson LOUNSBURY, Patrick KAIN
  • Patent number: 9400391
    Abstract: In a line projector a diode-laser beam having an elliptical cross-section is projected onto a Powell lens which spreads the beam to form a line of light. Distribution of power along the line of light is adjusted by rotating the diode-laser beam with respect to the Powell lens.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: July 26, 2016
    Assignee: Coherent, Inc.
    Inventors: Erik Nackerud, Jimson Lounsbury, Patrick Kain
  • Publication number: 20140085616
    Abstract: In a line projector a diode-laser beam having an elliptical cross-section is projected onto a Powell lens which spreads the beam to form a line of light. Distribution of power along the line of light is adjusted by rotating the diode-laser beam with respect to the Powell lens.
    Type: Application
    Filed: September 27, 2012
    Publication date: March 27, 2014
    Applicant: COHERENT, INC.
    Inventors: Erik NACKERUD, Jimson LOUNSBURY, Patrick KAIN
  • Patent number: 7999936
    Abstract: The refractive index, extinction coefficient, size and density of fluid suspended particles are simultaneously determined by combined transmittance and scattering measurements. The scattering measurements are preferably angle selective to obtain additional information about the scattered light. A charge-coupled device is employed for its high sensitivity to low light intensity in measurement of scattered light in combination with a photodiode array employed for its high signal to noise ratio, which is beneficial in transmittance measurement. The scattered light may be measured in an angle selective fashion by use of a motorized aperture that is concentrically positioned with respect to the impinging beam axis and moveable along the impinging beam axis. An ellipsoidal mirror collects the scattered light that passes through the motorized aperture and focuses the scattered light towards the charge-coupled device.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: August 16, 2011
    Assignee: n&k Technology, Inc.
    Inventors: Guoguang Li, Abdul Rahim Forouhi, Erik Nackerud