Light-source lamp and projector

F - Mech Eng,Light,Heat,Weapons – 21 – S

Patent

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Details

F21S 2/00 (2006.01) F21V 5/00 (2006.01) F21V 8/00 (2006.01) F21V 29/00 (2006.01) F21V 29/02 (2006.01) H05B 37/02 (2006.01)

Patent

CA 2636786

An object is to provide a light-source lamp capable of reducing consumption power while ensuring a certain luminance level and a projector using the light-source lamp. This light-source lamp 1 gathers light from a light source at a lens for emission. The light sources 3, 6 are formed of a plurality of arranged light-emitting diodes 32, 62, and the light sources 3, 6 are driven with pulse-width modulation control of the light-emitting diodes 32, 62. With this, compared with a configuration in which the light sources 3, 6 are subjected to analog control, consumption power of the lamp can be reduced while ensuring a certain luminance level lm.

L'invention concerne une lampe destinée à des sources lumineuses, laquelle présente une consommation d'énergie réduite tout en garantissant une luminance constante, ainsi qu'un projecteur utilisant une telle lampe. La lampe (1) pour sources lumineuses recueille la lumière provenant d'une source lumineuse grâce à un objectif et projette la lumière. La lampe est composée d'une pluralité de diodes électroluminescentes (32, 62) dans lesquelles sont disposées des sources lumineuses (3, 6), et les sources lumineuses (3, 6) sont régulées en modulant et en commandant la largeur d'impulsion des diodes électroluminescentes (32, 62). Ainsi, par comparaison avec la conception selon laquelle les sources lumineuses (3, 6) sont commandées de manière analogique, la consommation d'énergie de la lampe est réduite tout en garantissant une luminance constante (lm).

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