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Simon H A Begemann: Led lamp. U S Philips Corporation, April 24, 2001: US06220722 (344 worldwide citation)

The invention relates to a LED lamp having a gear column which is connected, at its first end, to a lamp cap and, at its other end, to a substrate. The substrate is provided with a regular polyhedron of at least four planes, the planes having at least one LED having a luminous flux of at least 5 lm. ...


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Simon H A Begemann, Ariadne D Tenner, Gerrit J Van Den Beld: Lighting system for controlling the color temperature of artificial light under the influence of the daylight level. U S Philips Corporation, Edward Blocker, February 24, 1998: US05721471 (152 worldwide citation)

A lighting system having at least one light source for supplying artificial light and a control unit for controlling the light source. The light source is of the type having an adjustable color temperature. The control unit is provided with a control signal from a signal generator. The signal genera ...


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Simon H A Begemann: LED lamp. September 21, 2004: US06793374 (107 worldwide citation)

An LED lamp has a gear column, which is connected between a cap and substrates. The substrates are arranged as a polyhedron with planar surfaces. Each surface has at least one LED. The gear column also has a heat-dissipater, which interconnects the substrates and the lamp cap.


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Simon H A Begemann: Solid state display light. Koninklijke Philips Electronics, Dicran Halajian, Frank Keegan, December 31, 2002: US06499860 (85 worldwide citation)

An LED lamp has a gear column which is connected between a cap and a substrate. The substrate is provided with a regular polyhedron of at least four planes, the planes having at least one LED which has a luminous flux of at least 5 lm. The gear column also has a heat-dissipater which interconnect th ...


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Simon H A Begemann, Gerrit J Van Den Beld, Ariadne D Tenner: System to optimize artificial lighting levels with increasing daylight level. U S Philips Corporation, July 15, 1997: US05648656 (59 worldwide citation)

An artificial lighting system comprises a daylight sensor for sensing a level of daylight, artificial light source means for providing a level of artificial light, daylight control means for control of the level of daylight and a controller for control of the level of artificial light dependent on t ...


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Simon H A Begemann, Ariadne D Tenner, Gerrit J Van Den Beld: Lighting system for controlling the color temperature of artificial light under the influence of the daylight level. U S Philips Corporation, Edward Blocker, January 19, 1999: US05861717 (23 worldwide citation)

A lighting system having at least one light source for supplying artificial light and a control unit for controlling the light source. The light source is of the type having an adjustable color temperature. The control unit is provided with a control signal form a signal from a signal generator. The ...


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