US Patent Issued to Nikon on March 3 for "Compact shearography system with adjustable shear distance" (Arizona Inventors)

ALEXANDRIA, Va., March 3 -- United States Patent no. 12,566,058, issued on March 3, was assigned to Nikon Corp. (Tokyo).

"Compact shearography system with adjustable shear distance" was invented by Eric Peter Goodwin (Oro Valley, Ariz.) and Daniel Gene Smith (Tucson, Ariz.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Shearography systems provide independent setting of fringe frequency and shear magnitude by situating an interferometer with a tiltable reflector proximate a pupil plane of an imaging optical system. Fringe frequency can be selected based on a modified Savart plate. In other examples, a Wollaston prism or a polarization grating is translated with respect to an image sensor to vary shear magnit...