ALEXANDRIA, Va., June 2 -- United States Patent no. 12,644,581, issued on June 2, was assigned to Korrus Inc. (Los Angeles).

"Lighting devices, light distribution-modifying elements, and methods" was invented by Elizabeth Rodgers (Long Beach, Calif.), Yaote Huang (Los Angeles), Robert Fletcher (Pasadena, Calif.) and Junxian Ma (El Monte, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A lighting device, comprising a housing, a light emitting diode, an optical system configured to at least partially collimate light emissions in a forward direction; and a removable accessory that reflects a portion of the light emissions more than 90 degrees from the forward direction. Also, a lighting device comprising ...