This organization researches and develops advanced lighting products, materials and components, and manufacturing processes. It is headquartered in Beverly, Massachusetts.

Beverly, Massachusetts	Lighting products
Danvers, Massachusetts	Fluorescent lamps
Drummondville, Quebec	Fluorescent lamps
Hillsboro, New Hampshire	Automotive lighting
Juarez, Mexico	Tungsten halogen/photo-optic
Manchester, New Hampshire	High-intensity discharge lamps
St. Marys, Pennsylvania	Incandescent lamps
Towanda, Pennsylvania	High-temperature metallurgy and inorganic chemistry
Versailles, Kentucky	Fluorescent lamps
Warren, Pennsylvania	Parts and materials processing
Winchester, Kentucky	Tungsten halogen lamps