MUMBAI, India, Aug. 31 -- Intellectual Property India has published a patent application (202514116701 A) filed by Distance Technologies Oy on November 25, 2025, for Narrowband Display Device With Narrowband Reflective Optical Combiner.
Inventors include Urho Konttori; Mikko Strandborg; and Petri Savolainen.
The application for the patent was published on August 28, 2026, under issue no. 35/2026.
Abstract: A display device (102) comprises a light-emitting unit (104) having red light sources, green light sources and blue light sources that are employed to respectively emit red light, green light and blue light of certain wavelengths. A semi-reflective surface (130) of an optical combiner (124) has a multi-band reflective coating that is c...