ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,385,608, issued on Aug. 12, was assigned to SIGNIFY HOLDING B.V. (Eindhoven, Netherlands).
"Lightbulb" was invented by Huansi Wang (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a lightbulb that is configured such that the light source of the lightbulb has a reduced visibility. This is achieved by the provision of a lens arrangement comprising an outer convergent lens. The outer convergent lens converges light rays that enter the outer convergent lens at a same first angle to establish a shadow region. The shadow region is a volume in the lightbulb in which light rays incident to the outer convergent lens at a first angle may not b...