ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,706,288, issued on Aug. 11, was assigned to HAMAMATSU PHOTONICS K.K. (Hamamatsu, Japan).

"Photoelectric conversion device and photoelectric conversion method" was invented by Naoya Kawai (Hamamatsu-shi, Japan), Hideaki Yoshiara (Hamamatsu-shi, Japan), Simon Lehnskov Lange (Copenhagen NV, Denmark) and Peter Uhd Jepsen (Copenhagen S, Denmark).

According to the abstract* released by the U.S. Patent & Trademark Office: "A photoelectric conversion device is provided with an electron emitter including a meta-surface emitting an electron in response to incidence of an electromagnetic wave. The meta-surface includes a plurality of photoelectric conversion units having a sensitivity for elect...