HYBRID LED/LASER LIGHT SOURCE FOR SMART HEADLIGHT APPLICATIONS
摘要:
Apparatus including a hybrid light source for smart automotive-headlight applications. The hybrid light source includes: an LED light source of full-area illumination; a laser-pumped phosphor material that provides hot-spot illumination; a DMD having plurality of micromirrors coupled to receive light from the full-area illumination and the hot-spot illumination, wherein each micromirror selectively reflects light in one of a plurality of directions; and projection optics that receives light selectively reflected by the micromirrors and is configured to project the received light as a beam having a shaped illumination-intensity pattern. Another aspect includes an assembly including a heatsink; an LED on the heatsink that emits LED pump light; a first phosphor layer on the LED that absorbs LED pump light and outputs a full-area illumination having wavelength-converted light and an unconverted portion of LED pump light; and a laser-pumped second phosphor layer coupled to output wavelength-converted and laser light as hot-spot illumination.
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