Light emitting diode based light system with a redundant light source
OwnerTak Meng Cheang, Fook Chuin Ng +2inventors
InventorsTak Meng Cheang, Fook Chuin Ng, Choon Guan Ko, Choon Keat Chew
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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.
Claims17
A method for controlling a light emitting diode (LED) based light system comprising:
- activating a first light source of an LED-based light system that includes a redundant light source;
- generating feedback signals related to the first light source;
- determining whether to activate the redundant light source of the LED-based light system in response to the feedback signals;
- and
- activating the redundant light source if the feedback signals indicate that a performance characteristic is not being met by the first light source alone.
A light emitting diode (LED) based light system comprising:
- a first light source;
- a redundant light source;
- means, in optical signal communication with the first light source and electrical signal communication with the first and the redundant light sources, for:
- activating the first light source;
- generating feedback signals related to the first light source;
- determining whether to activate the redundant light source in response to the feedback signals;
- and
- means for activating the redundant light source if the feedback signals indicate that a performance characteristic is not being met by the first light source alone.
A light emitting diode (LED) based light system comprising:
- a first light source;
- a redundant light source;
- a redundant light source management system in optical signal and electrical signal communication with the first and the redundant light sources, the redundant light source management system configured to activate the first light source, to generate feedback signals related to the first light source, and to determine whether to activate the redundant light source in response to the feedback signals, wherein the redundant light source management system is further configured to activate the redundant light source if the feedback signals indicate that a performance characteristic is not being met by the first light source alone.
Dependencies are inferred from the claim text.