Patent ID: 11946640
Assignee: LUMILEDS, LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  H  B  G | IPC F  H

Claim 12:
13. A multi-function signal lamp comprising:
a multi-color light source comprising:
a substrate;
a plurality of first light emitting diode (LED) dies having bottom surfaces on the substrate and configured to emit a first die color when turned on,
a first dome-shaped filling completely surrounding all surfaces of the plurality of first LED dies except the bottom surfaces, the first filling comprising a first phosphor such that the light having the first die color is converted to light having a first illuminous color when at least one of the first plurality of LED dies is turned on,
a plurality of second LED dies spaced apart from the first plurality of LED dies, having bottom surfaces on the substrate, and configured to emit light having a second die color when at least one of the plurality of second LED dies is turned on, and
a second filling completely surrounding all surfaces of the plurality of second LED dies except the bottom surface and extending to the first dome-shaped filling, the second filling comprising a second phosphor such that when the first and second plurality of LED dies are turned on, the light having the second die color is converted to light having a second illuminous color that has a higher absorption energy than an illumination energy of the first illuminous color and passes around the first dome-shaped filling unconverted by the first dome-shaped filling; and
a controller configured to receive an instruction to activate one of a plurality of lighting functions for the multi-color light source and, in response to the instruction, control the multi-color light source to turn on at least two of the plurality of first LED dies or at least two of the plurality of second LED dies in a predetermined pattern, wherein the plurality of lighting functions comprises at least two of Daytime Running Lamp, Turn light, or Position Lamp.