Patent ID: 8912562

Claim:
A light source, comprising: a first blue-light emitting LED; a layer of phosphor material, the phosphor material adapted to emit light at longer visible wavelengths in response to excitation from the blue light emitted by the first LED; a dichroic reflector configured to reflect a first portion of the light emitted by the first LED onto the layer of phosphor material in such a way that as light propagates from the first LED to the dichroic reflector it does not pass through the layer of phosphor material, the dichroic reflector substantially transmitting light at the longer visible wavelengths; wherein the dichroic reflector is configured to transmit a second portion of the light emitted by the first LED, such that the light source emits broadband light that includes a combination of the second portion of the light emitted by the first LED and the light at longer wavelengths emitted by the phosphor material.