Patents by Inventor Osku P. Kemppinen

Osku P. Kemppinen 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).

  • Contact-free holographic imaging of aerosol particles from mobile platforms
    Patent number: 11353392
    Abstract: A device includes a filter that enhances a beam profile of a received pulsed laser; a first optical element to direct the pulsed laser as a reference wave towards an optical sensor; an open cavity positioned between the first optical element and the optical sensor. The open cavity receives an aerosol particle, which enters the open cavity from any direction. The reference wave illuminates the aerosol particle. An illuminated particle generates and directs an object wave towards the optical sensor. A pixel array is connected to the optical sensor. The pixel array receives the reference wave and the object wave. The optical sensor creates a contrast hologram comprising an interference pattern of the illuminated particle. A processor creates an image of the illuminated particle based on the contrast hologram.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: June 7, 2022
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Matthew J. Berg, Osku P. Kemppinen, Gorden W. Videen
  • CONTACT-FREE HOLOGRAPHIC IMAGING OF AEROSOL PARTICLES FROM MOBILE PLATFORMS
    Publication number: 20220091019
    Abstract: A device includes a filter that enhances a beam profile of a received pulsed laser; a first optical element to direct the pulsed laser as a reference wave towards an optical sensor; an open cavity positioned between the first optical element and the optical sensor. The open cavity receives an aerosol particle, which enters the open cavity from any direction. The reference wave illuminates the aerosol particle. An illuminated particle generates and directs an object wave towards the optical sensor. A pixel array is connected to the optical sensor. The pixel array receives the reference wave and the object wave. The optical sensor creates a contrast hologram comprising an interference pattern of the illuminated particle. A processor creates an image of the illuminated particle based on the contrast hologram.
    Type: Application
    Filed: September 21, 2020
    Publication date: March 24, 2022
    Inventors: Matthew J. Berg, Osku P. Kemppinen, Gorden W. Videen