Light emitting diode based light system with a redundant...

Details Light emitting diode based light system with a redundant... Light emitting diode based light system with a redundant...

2006-03-14

2006-03-14

Lee, Wilson (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S149000, C315S312000

Reexamination Certificate

active

07012382

ABSTRACT:
An LED-based light system includes a primary light source and at least one redundant light source. The primary light source is activated by itself and the performance of the light source is measured to determine whether nor not to drive the redundant light source. The redundant light source is activated when the performance measurements indicate that a performance characteristic is not being met by the primary light source alone. The first light system can be activated in combination with the redundant light source once the decision is made to activate the redundant light source.

REFERENCES:
patent: 6095661 (2000-08-01), Lebens et al.
patent: 6441558 (2002-08-01), Muthu et al.
patent: 6498440 (2002-12-01), Stam et al.
patent: 6507159 (2003-01-01), Muthu
patent: 6753661 (2004-06-01), Muthu et al.

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