Patents by Inventor Dimitrius Papaioannou

Dimitrius Papaioannou 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).

  • Localization of an object in a turbid medium using radiation of different wavelengths
    Patent number: 5941827
    Abstract: A system for detecting an object (1) in a turbid medium (2) comprises a radiation source (3) for irradiating the turbid medium with radiation components of different wavelengths, preferably in the range between 600 nm and 1 .mu.m. The radiation components are amplitude modulated, preferably in anti-phase. The radiation form the turbid medium is received by a photodetector (4) which is sensitive for the different wavelengths. Inhomogeneities in the turbid medium influence the superposition of the amplitude modulations at the photodetector, so that the photodetector outputs a signal that contains information on the presence and/or location of an object in the turbid medium.
    Type: Grant
    Filed: December 1, 1997
    Date of Patent: August 24, 1999
    Assignee: U.S. Philips Corporation
    Inventor: Dimitrius Papaioannou