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US 12,283,790 B2Granted
Laser-phosphor integrated light source
AssigneeKYOCERA SLD Laser, Inc.
InventorSten Heikman
Life of this patent
Estimating the term…
Abstract
A phosphor integrated laser-based light source includes a thermally conductive material arranged on a package base adjacent to a laser diode chip and an optically transparent material coupled to the thermally conductive material. A groove extends between the thermally conductive material and the optically transport material and is aligned to receive electromagnetic radiation from the laser diode chip. A wavelength conversion material is coupled to the optically transparent material and is configured to receive at least a portion of the electromagnetic radiation emitted into the groove and transmitted through the optically transparent material. A reflective material surrounds sides of the optically transparent material and the wavelength conversion material.
Claims20
A phosphor integrated laser-based light source, comprising:
- a package base;
- a laser diode chip coupled to the package base, the laser diode chip comprising a gallium and nitrogen containing material and configured to output a laser beam of electromagnetic radiation from an output facet;
- the laser diode chip configured to emit the electromagnetic radiation at a first wavelength;
- a thermally conductive layer coupled to the package base and arranged on the package base adjacent to the laser diode chip, the thermally conductive layer having a reflective top surface;
- an optically transparent layer coupled to the reflective top surface of the thermally conductive layer, wherein:
- a groove extends between a portion of the thermally conductive layer and a portion of the optically transparent layer from a side of the thermally conductive layer, a side of the optically transparent layer, or both,
- the groove is aligned with the laser diode chip to receive the electromagnetic radiation from the laser diode chip, and
- the reflective top surface of the thermally conductive layer is arranged to reflect light from the laser diode chip upward;
- a wavelength conversion layer coupled to the optically transparent layer and configured to receive at least a portion of the electromagnetic radiation emitted into the groove and transmitted through the optically transparent layer, the wavelength conversion layer configured to convert at least a fraction of the electromagnetic radiation in the laser beam with a first wavelength to a second wavelength that is longer than the first wavelength;
- and
- a reflective material surrounding sides of the optically transparent layer and the wavelength conversion layer, the reflective material configured to reflect portions of the electromagnetic radiation incident on the sides of the optically transparent layer and the wavelength conversion layer, wherein the wavelength conversion layer is configured to emit a light from a top surface that includes a first portion having the first wavelength and a second portion having the second wavelength.
8 more elements
A phosphor integrated laser-based light source, comprising:
- a package base;
- a laser diode chip coupled to the package base, the laser diode chip comprising a gallium and nitrogen containing material and configured to output a laser beam of electromagnetic radiation from an output facet;
- the laser diode chip configured to emit the electromagnetic radiation at a first wavelength;
- a thermally conductive layer coupled to the package base and arranged on the package base adjacent to the laser diode chip, the thermally conductive layer having a reflective top surface;
- an optically transparent layer coupled to the top surface of the thermally conductive layer wherein a groove extends along a bottom of the optically transparent layer;
- a light guide aligned with the output facet of the laser diode chip on one end and aligned with the groove on another end;
- the light guide configured and arranged to guide the electromagnetic radiation from the laser diode chip to the groove in the optically transparent layer;
- a wavelength conversion layer coupled to the optically transparent layer and configured to receive at least a portion of the electromagnetic radiation emitted into the groove and transmitted through the optically transparent layer, the wavelength conversion layer being configured to convert at least a fraction of the electromagnetic radiation in the laser beam with a first wavelength to a second wavelength that is longer than the first wavelength;
- and
- a reflective material surrounding sides of the optically transparent layer and the wavelength conversion layer, the reflective material configured to reflect portions of the electromagnetic radiation incident on the sides of the optically transparent layer and the wavelength conversion layer, wherein the wavelength conversion layer is configured to emit a light from a top surface that includes a first portion having the first wavelength and a second portion having the second wavelength.
7 more elements
Dependencies are inferred from the claim text.