ALEXANDRIA, Va., July 3 -- United States Patent no. 12,345,391, issued on July 1, was assigned to LEDIL OY (Salo, Finland).
"Optical device with two optical elements for modifying light distribution" was invented by Olli Saarnio (Salo, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical device includes a first optical element and a second optical element moveable with respect to the first optical element. The first optical element includes a first surface for modifying a distribution of light exiting the first optical element, and the second optical element includes a second surface facing towards the first surface and for further modifying the distribution of the light. One of the first and se...