US Patent Issued to Distance Technologies on Nov. 18 for "Narrowband reflective optical combiner with narrowband display device having multi-coloured backlight unit" (Finnish Inventors)

ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,474,578, issued on Nov. 18, was assigned to Distance Technologies Oy (Helsinki).

"Narrowband reflective optical combiner with narrowband display device having multi-coloured backlight unit" was invented by Urho Konttori (Helsinki), Mikko Strandborg (Hangonkyla, Finland) and Petri Savolainen (Espoo, Finland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A display device includes a backlight unit that is controllable to switch between lights of different colours having specific wavelengths, and an active panel including a liquid crystal (LC) layer. A multi-band reflective coating on an optical combiner is configured to selectively reflect the lights havin...