System and method for mixing light for a led-pumped phosphor array light source
AssigneeLumenetix, Inc.
InventorMatthew D. Weaver
Life of this patent
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Abstract
A LED-pumped phosphor array light source and a method of manufacturing the phosphor array light source are disclosed. The phosphor array light source includes a light emitting diode (LED) array, an imaging optics, a phosphor module array, and a light mixing pipe. The imaging optics focuses the light rays from the LED array on the phosphor module array. The phosphor modules are pumped by the incoming light rays and emit colored light into the light mixing pipe. In some embodiments, the imaging optics include a short-pass filter to minimize light loss through back scattering.
Claims23
A LED-pumped remote phosphor light source comprising:
- a plurality of light emitting diodes (LEDs);
- an imaging optics over the plurality of LEDs;
- a phosphor array attached over the imaging optics on an opposite side from the plurality of LEDs, the phosphor array including more than one color type;
- and
- a light mixing pipe bonded to the phosphor array to provide total internal reflection of light rays from the phosphor array for light ray angles larger than a critical angle with respect to a normal vector of a surface of the light mixing pipe.
A LED-pumped remote phosphor light source comprising:
- a plurality of light emitting diodes (LEDs);
- an imaging optics over the plurality of LEDs, the imaging optics including a short pass filter therein;
- a phosphor array attached over the imaging optics on a side facing away from the plurality of LEDs, the phosphor array including more than one color type;
- and
- a light mixing pipe optically bonded to the phosphor array to provide total internal reflection of light rays from the phosphor array for light ray angles larger than a critical angle with respect to a normal vector of a surface of the light mixing pipe.
A method of manufacturing a LED-pumped remote phosphor light source comprising:
- providing a plurality of light emitting diodes (LEDs);
- optically bonding an imaging optics over the plurality of LEDs;
- optically bonding a light mixing pipe to a phosphor array of different colors;
- and
- attaching the imaging optics to the phosphor array on a side of the imaging optics facing away from the plurality of LEDs.
Dependencies are inferred from the claim text.