Patents by Inventor John Amsten

John Amsten 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).

  • Raman despeckling with spectral control
    Patent number: 10663747
    Abstract: An apparatus and method for controlling the spectrum of stimulated Raman scattering that is used for despeckling of digitally projected images. The stimulated Raman scattering is utilized to add wavelength diversity for reduced speckle and to change the color of the light to a more desirable combination of wavelengths. Digital projection with color-sequential projectors may be enabled by alternately switching the Raman spectrum between green and red. Improved projector transmission may be achieved by minimizing the amount of yellow light generated in the Raman spectrum.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: May 26, 2020
    Assignee: Projection Ventures, Inc.
    Inventors: Ian Lee, Barret Lippey, John Amsten
  • RAMAN DESPECKLING WITH SPECTRAL CONTROL
    Publication number: 20170068107
    Abstract: An apparatus and method for controlling the spectrum of stimulated Raman scattering that is used for despeckling of digitally projected images. The stimulated Raman scattering is utilized to add wavelength diversity for reduced speckle and to change the color of the light to a more desirable combination of wavelengths. Digital projection with color-sequential projectors may be enabled by alternately switching the Raman spectrum between green and red. Improved projector transmission may be achieved by minimizing the amount of yellow light generated in the Raman spectrum.
    Type: Application
    Filed: November 21, 2016
    Publication date: March 9, 2017
    Inventors: Ian Lee, Barret Lippey, John Amsten