Laser diode pumped white light emitter module
OwnerBrant C. McLellaninventor
Life of this patent
Estimating the term…
Abstract
An apparatus includes a thermally conductive housing including a reflective chamber, the reflective chamber including a reflective surface on a first side of the reflective chamber and an orifice on a second side of the reflective chamber. The reflective surface includes a converging surface annularly surrounding a central recirculating surface. The apparatus includes a phosphor converter at the orifice of the reflective chamber. The apparatus further includes a plurality of laser diodes arranged annularly around the orifice, the plurality of laser diodes configured to emit laser beams towards the converging surface.
Claims19
An apparatus comprising:
- a thermally conductive housing comprising a reflective chamber, the reflective chamber comprising a reflective surface on a first side of the reflective chamber and an orifice on a second side of the reflective chamber, wherein the reflective surface comprises a converging surface annularly surrounding a central recirculating surface, wherein the reflective chamber is formed by a heat sink and a reflector coupled to the heat sink, wherein the reflector comprises the reflective surface and the heat sink comprises the orifice;
- a phosphor converter at the orifice of the reflective chamber;
- a plurality of laser diodes arranged annularly around the orifice, the plurality of laser diodes configured to emit laser beams towards the converging surface.
A method comprising:
- projecting laser beams from a plurality of laser diodes onto a converging surface of a reflective chamber of an emitter module, wherein the reflective chamber is formed by a heat sink and a reflector coupled to the heat sink;
- reflecting the laser beams to converge on a phosphor converter at an orifice of the reflective chamber, wherein the reflector comprises the reflective surface and the heat sink comprises the orifice;
- and
- recirculating reflected light and recirculated light from the phosphor converter back to the phosphor converter.
Dependencies are inferred from the claim text.