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US 12,374,854 B2Granted
Laser-based integrated light source
AssigneeKYOCERA SLD Laser, Inc.
InventorsSten Heikman, Terry Towe, Sudeep Khanal
Life of this patent
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Abstract
A laser-based light source includes a material arranged on a package base adjacent to a laser diode chip and an optical element coupled to the material. The optical element is aligned to receive electromagnetic radiation from the laser diode chip. The optical element includes a wavelength conversion material and is configured to receive at least a portion of the electromagnetic radiation emitted by the laser diode chip. A reflective material surrounds sides of the optical element.
Claims24
A laser-based light source, comprising:
- a package base;
- a laser diode chip coupled to the package base, the laser diode chip 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 material element coupled to the package base and arranged on the package base adjacent to the laser diode chip, the material element having a reflective surface;
- an optical element coupled directly to a top surface of the material element, wherein;
- a groove extends between a portion of the material element and a portion of the optical element from a side of the material element, a side of the optical element, or both,
- the groove is aligned with the laser diode chip to receive the electromagnetic radiation from the laser diode chip, and
- the reflective surface of the material element is arranged to reflect light from the laser diode chip upward;
- and the material element configured to direct at least a portion of the electromagnetic radiation in the groove into the optical element, the optical element including a wavelength conversion material configured to convert at least a fraction of the electromagnetic radiation in the laser beam with the first wavelength to a second wavelength that is longer than the first wavelength;
- and
- a reflective material layer surrounding sides of the optical element, the reflective material layer configured to reflect portions of the electromagnetic radiation incident on the sides of the optical element, wherein the optical element is configured to emit a light from a top surface, the light including a first portion having the first wavelength and a second portion having the second wavelength.
8 more elements
A laser-based light source, comprising:
- a package base;
- a laser diode chip coupled to the package base, the laser diode chip 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 material element coupled to the package base and arranged on the package base adjacent to the laser diode chip, the material element having a reflective surface;
- an optical element coupled directly to a top surface of the material element, wherein a groove extends along a bottom of the optical element;
- 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 at least a portion of the electromagnetic radiation from the laser diode chip to the groove in the optical element, wherein the optical element includes a wavelength conversion material and is configured to receive at least a portion of the electromagnetic radiation emitted into the optical element, the wavelength conversion material being configured to convert at least a fraction of the electromagnetic radiation in the laser beam with the first wavelength to a second wavelength that is longer than the first wavelength;
- and
- a reflective material layer surrounding sides of the optical element, the reflective material layer configured to reflect portions of the electromagnetic radiation incident on the sides of the optical element, wherein the optical element is configured to emit a light from a top surface, the light including a first portion having the first wavelength and a second portion having the second wavelength.
5 more elements
Dependencies are inferred from the claim text.