Osram

German maker of light sources, formed when AEG, Siemens and the Auer-Gesellschaft merged their lamp production. The name came from osmium and wolfram (tungsten).

AEG, Siemens & Halske and the Auergesellschaft merged their production of light bulbs and formed Osram. The name had been created by Carl Auer von Welsbach for a lamp with a filament of osmium and tungsten.

Osram became one of the world's largest makers of light sources, with incandescent bulbs, fluorescent tubes and halogen lamps. The company is now part of ams-OSRAM.

The brand printed on the bulb or cap.

• Lighting