ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,834, issued on Sept. 8, was assigned to ROBE lighting s.r.o. (Roznov pod Radhostem, Czech Republic).
"Manual frost mechanism" was invented by Tomas Micunek (Roznov pod Radhostem, Czech Republic), Jan Vilem (Valasske Mezirici, Czech Republic) and Josef Valchar (Prostredni Becva, Czech Republic).
According to the abstract* released by the U.S. Patent & Trademark Office: "A luminaire includes a light source that emits a light beam and a frost filter mechanism that is mechanically coupled to a lens group of the luminaire and configured to move with the lens group along an optical axis of the light beam. The frost filter mechanism includes a frost filter configured to be moved from a ...