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"Three-Dimensional Reconstruction of a Millimeter-Wave Scene by Optical Up-Conversion and Cross-Correlation Detection" in Patent Application Approval...

July 31, 2014

"Three-Dimensional Reconstruction of a Millimeter-Wave Scene by Optical Up-Conversion and Cross-Correlation Detection" in Patent Application Approval Process

By a News Reporter-Staff News Editor at Politics & Government Week -- A patent application by the inventors Murakowski, Janusz (Bear, DE); Schneider, Garrett (New Castle, DE); Shi, Shouyuan (Newark, DE); Schuetz, Christopher A. (Avondale, PA); Prather, Dennis W. (Newark, DE), filed on January 8, 2014, was made available online on July 17, 2014, according to news reporting originating from Washington, D.C., by VerticalNews correspondents.

This patent application is assigned to Phase Sensitive Innovations, Inc.

The following quote was obtained by the news editors from the background information supplied by the inventors: "In existing approaches to millimeter wave (mmW) based imaging, an array of optical fibers carrying the up-converted mmW signal may be arranged to mimic an array of antennas capturing the mmW radiation from the scene. The optical beams from the fibers may then be allowed to propagate in free space, and interfere to form an optical image corresponding to the mmW scene on a CCD array. Ideally, each pixel of the CCD receives optical beams from all the fibers. The drawback to this approach is that it does not readily provide a way to obtain three-dimensional (3D) images."

In addition to the background information obtained for this patent application, VerticalNews journalists also obtained the inventors' summary information for this patent application: "Embodiments of the invention may include a device and associated method for three-dimensional imaging of a millimeter-wave (mmW) scene that may use sparse-aperture capture of the radiation, its up-conversion to optical domain, optical measurement of cross-correlation terms, and digital reconstruction of the original mmW scene from the cross-correlation terms.


"Various embodiments of the invention will now be described in conjunction with the accompanying drawings, in which:

"FIGS. 1 and 1A show an overview of an example of a distributed-aperture mmW imaging system;

"FIGS. 2A-2D show and describe the concept of optical up-conversion of a signal;

"FIG. 3 shows an example diagram of the optical layer of an imaging system;

"FIG. 4 shows an example of a beam splitter that may be used in some implementations;.

"FIG. 5 shows, conceptually, an example of measurement of cross-correlations in the optical domain;

"FIG. 6 shows a schematic depiction of a scene used in simulations;

"FIGS. 7A-7F show various results of simulations of systems according to aspects of this disclosure; and

"FIG. 8 shows an example flow diagram illustrating the incorporation of various aspects of this disclosure."

URL and more information on this patent application, see: Murakowski, Janusz; Schneider, Garrett; Shi, Shouyuan; Schuetz, Christopher A.; Prather, Dennis W. Three-Dimensional Reconstruction of a Millimeter-Wave Scene by Optical Up-Conversion and Cross-Correlation Detection. Filed January 8, 2014 and posted July 17, 2014. Patent URL:

Keywords for this news article include: Phase Sensitive Innovations, Phase Sensitive Innovations Inc.

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Source: Politics & Government Week

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