Patents by Inventor Witold J. Popek

Witold J. Popek 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).

  • Serial imager for birefringent detector acoustic imaging systems
    Patent number: 6321023
    Abstract: A computer-readable signal bearing medium (10) has components (11, 21, 31) which act via a data processor (86) in an imaging system having an acoustic energy source (81) and a birefringent detector (84, 70) to record first data (14) from a first portion (61) of an object (60), the first portion attenuating first acoustic energy (12) at least part way to a first attenuation maximum (13, 43) along a first acousto-optic response (41) of the birefringent detector; to record second data (24) from a second portion (62) of the object, the second portion attenuating second acoustic energy (22) at least part way to a second attenuation maximum (23, 53) along a second acousto-optic response (51) of the birefringent detector; combines the data (32), and outputs a result.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: November 20, 2001
    Inventors: Honghui Wang, Jaswinder S. Sandhu, Witold J. Popek
  • Optical imager for birefringent detector acoustic imaging systems
    Patent number: 6049411
    Abstract: Light from a collimated light source which is incident on a birefringent detector at a predetermined optimum angle interacts with the birefringent detector and is viewed by an imaging transducer in order to produce an image which shows changes in the birefringence of the birefringent detector caused by acoustic energy which has interacted with an object, the image thus showing heterogeneities in the object.
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: April 11, 2000
    Assignee: SanTec Systems Inc
    Inventors: Jaswinder S. Sandhu, Witold J. Popek, Hongui Wang
  • Acoustic imaging systems
    Patent number: 5796003
    Abstract: An ultrasonic inspection system for inspecting a test object and producing substantially artifact-free images, which system includes (1) a sound source for emitting ultrasonic energy toward a test object, (2) a liquid crystal detector for detecting emitted ultrasonic energy and displaying an image, and (3) a coupling medium for sonically coupling the sound source, the test object and the detector. The ultrasonic energy is emitted at each of a plurality of frequencies within a predetermined range. It has been determined that the ultrasonic energy insonifing the object can be caused to scan the object and be angularly varied with respect thereto. Moreover, the rate of frequency scanning is substantially less that the detector image decay so as to produce a substantially flicker-free image. The angular variation is performed by rocking the sound source through a small angle, such as 2.degree. to 6.degree. relative to the liquid crystal detector.
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: August 18, 1998
    Inventors: Jaswinder S. Sandhu, Witold J. Popek, Honghui Wang