Current routing to multiple LED circuits

摘要

An illumination module includes a plurality of Light Emitting Diodes (LEDs) located in different zones to preferentially illuminate different color converting surfaces. The flux emitted from LEDs located in different zones may be independently controlled by selectively routing current from a single current source to different strings of LEDs in the different zones. In this manner, changes in the CCT of light emitted from LED based illumination module may be achieved.

主权项

1. An apparatus, comprising:
a first node configured to receive a current signal that includes a property indicative of a desired color temperature of an amount of light emitted from an LED based illumination device; a second node couplable to a first plurality of LEDs; and a third node couplable to a second plurality of LEDs, wherein the current signal received by the first node is selectively routed to each of the first plurality of LEDs and the second plurality of LEDs based on the property of the current signal.