ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,510,228, issued on Dec. 30, was assigned to SIGNIFY HOLDING B.V. (Eindhoven, Netherlands).
"Lens for a lamp" was invented by Danying Tang (Shanghai) and Liang Tian (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "A lens for a lamp. The lens comprises a front or light-exiting surface, a reflective or side surface and a light incident or light receiving surface. The front surface comprises a portion that defines a stepped-shape cavity that extends into the lens. Part of the light that travels from the light incident surface to the portion of the front surface (defining the stepped-shape cavity) is transmitted, and another part is reflected towards...