MUMBAI, India, Oct. 26 -- Intellectual Property India has published a patent application (202617090202 A) filed by Tactotek Oy on July 24, 2026, for Optically Functional Multilayer Structure And Related Method Of Manufacture.
Inventors include Krn, Miikka; Hnninen, Ilpo; Yrjn, Samuli; and Koivikko, Simo.
The application for the patent was published on October 23, 2026, under issue no. 43/2026.
Abstract: An integrated optically functional multilayer structure (100, 500), comprising a flexible, optionally 3D-formable and further optionally thermoplastic, substrate film (102) arranged with a circuit design (106) comprising at least a number of electrical conductors on a first side of the substrate film (102); at least one light source (104) provided upon the first side of the substrate film (102) and connected to the circuit design (106), said at least one light source (104) being configured to internally illuminate at least a portion of the structure for external perception; and an optically transmissive layer (108), optionally of plastic or thermoplastic material such as polycarbonate, thermoset, silicone, epoxy, or other material, produced upon the first side of the substrate film (102) and the at least one light source (104), said optically transmissive layer (108) at least partially covering the substrate film (102) and embedding the at least one light source (104); wherein at least one of the substrate film (102) or the optically transmissive layer defines an outcoupling surface, preferably tilted (101) away from a surface plane or direction of the adjacent areas of the substrate film (102), configured to redirect and reflect, preferably by TIR (total internal reflection), incident light emitted by one or more light sources of the at least one light source (104). Related method of manufacture is presented.
Disclaimer: Curated by HT Syndication.
