US Patent Issued to KONINKLIJKE PHILIPS on Feb. 18 for "Focusing grating devices with large aspect ratio" (German Inventors)

ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,228,526, issued on Feb. 18, was assigned to KONINKLIJKE PHILIPS N.V. (Eindhoven, Netherlands).

"Focusing grating devices with large aspect ratio" was invented by Thomas Koehler (Norderstedt, Germany) and Gereon Vogtmeier (Aachen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A focusing grating device (100) is described comprising a substrate (402) and a grating comprising a plurality of grating features (408) positioned on the substrate (402). The grating features (408) are positioned non-perpendicular to the substrate surface, thereby inducing a first focusing direction. The substrate (402) is curved, thereby inducing a second focusing directi...