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Thorn Lighting Ltd, a subsidiary of the Zumtobel Group, is a global supplier of both outdoor and indoor luminaires and integrated controls. Thorn was founded when Sir Jules Thorn started The Electric Lamp Service Company Ltd, in 1928, dealing in incandescent filament lamps .
Thorn Electrical Industries Limited was a British electrical engineering company. It was listed on the London Stock Exchange , but merged with EMI Group to form Thorn EMI in 1979. It was de-merged in 1996 and became a constituent of the FTSE 100 Index , but was acquired by the Japanese Nomura Group only two years later.
In the 1970s, Thorn Lighting introduced an energy-saving 8 ft retrofit tube in Europe. Designed to run on the existing 125 W (240 V) series ballast but with a different gas fill and operating voltage, the tube operated at only 100 W. Increased efficiency meant that the tube produced only 9% lumen reduction for a 20% power reduction. [7]
Thorn EMI Video was established in 1981. Thorn EMI released films on video from various film companies including Orion Pictures (First Blood, The Terminator), New Line Cinema (The Evil Dead, Xtro), and Universal (Bad Boys, Frances) in the 1980s. Thorn EMI joined HBO in November 1984 to create Thorn EMI/HBO Video. [27]
Streetlamp with a ceramic metal halide bulb Ceramic metal halide bulb with G12 socket. A ceramic metal-halide lamp (CMH), also generically known as a ceramic discharge metal-halide (CDM) lamp, [1] is a type of metal-halide lamp that is 10–20% more efficient than the traditional quartz metal halide [2] and produces a superior color rendition (80-96 CRI).
Thorn (organization), an anti-human-trafficking organization; Thorn Electrical Industries, an electrical engineering business; Thorn EMI, a major British company involved in consumer electronics, music, defence and retail; Thorn Lighting, luminaire manufacturer, part of Zumtobel Lighting Group