ALEXANDRIA, Va., July 28 -- United States Patent no. 12,693,219, issued on July 28.
"Lensless surface plasmon resonance instrument" was invented by Ludovic Live (Toronto) and James Wei (Waterloo, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "A surface plasmon resonance (SPR) instrument is provided, in which light from one or more broad spectrum LEDs is sequentially passed through corresponding apertures directly into a Dove prism. Upon entering the Dove prism the light is refracted onto a surface of the prism against which an SPR sensor is attached, then internally reflects off the surface to a third surface of the Dove prism. Upon exiting the Dove prism the light is again refracted so as to be colli...