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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 2000, the British company Wassall plc was acquired with the assistance of the American equity capital partner Kohlberg Kravis Roberts & Co. (KKR), and the Thorn Lighting Group was merged with Zumtobel’s luminaire business; the components business of Thorn was transferred to the Tridonic Division.
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
As a teenager Rogerson wanted to work in the computer industry. On graduating from the University of Dundee he joined Thorn Lighting as a Fortran Programmer in 1972. He progressed to Senior Systems Analyst before transferring to Thorn EMI in 1976 as Technical Systems Manager and where he became Computer Services Manager in 1981.
This page was last edited on 31 October 2024, at 14:42 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
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]