ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,973, issued on March 3.
"Gobo frosted or etched using a pico-second or femto-second laser" was invented by Joel A. Nichols (Columbia City, Ind.), Benjamin Powers (Fort Wayne, Ind.) and Samuel Morrison (Fort Wayne, Ind.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gobo used to project an image by selectively transmitting and blocking light includes a blank made of transparent material. There is an etched or frosted area on the surface of the blank having a surface morphology characterized by micro-pyramids, which may be produced using a pico-second or femto-second laser. The micro-pyramids cause micro-lensing to occur when the gobo is in use, the...