US Patent Issued to KLA on April 21 for "Micro-lens array for metal-channel photomultiplier tube" (Canadian, American Inventors)

ALEXANDRIA, Va., April 21 -- United States Patent no. 12,609,289, issued on April 21, was assigned to KLA Corp. (Milpitas, Calif.).

"Micro-lens array for metal-channel photomultiplier tube" was invented by Paul Donders (Burlington, Canada) and Derek Mackay (Palo Alto, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The effective quantum efficiency of a metal-channel photomultiplier tube can be increased with an optical system. The optical system can direct incident light from areas of low efficiency on the cathode of the metal-channel photomultiplier tube instead to areas of high efficiency on the cathode. These high-efficiency areas of the cathode can correspond to a position between the dynode struct...