https://patents.google.com/patent/US5590031A/en?oq=US5%2c590%2c031
Mead, Franklin B. / Nachamkin, Jack : ?System for converting Electromagnetic Radiation Energy to
Electrical Energy, ?U.S. Patent No. 5,590,031, Dec. 31, 1996, see :
http://v3.espacenet.com/publicationDetails/originalDocument?CC=US&NR=5590031A&KC=A&FT=D&
date=19961231&DB=EPODOC&locale=de_EP