SPECIALIZED INTEGRATED LIGHT SOURCE USING A LASER DIODE

摘要

The present invention provides a device and method for an integrated white colored electromagnetic radiation source using a combination of laser diode excitation sources based on gallium and nitrogen containing materials and light emitting source based on phosphor materials. In this invention a violet, blue, or other wavelength laser diode source based on gallium and nitrogen materials is closely integrated with phosphor materials, such as yellow phosphors, to form a compact, high-brightness, and highly-efficient, white light source.

主权项

1. An integrated white light source for a vehicle or other application using a beam of light, comprising:
a laser diode device comprising a gallium and nitrogen containing material and configured as an excitation source; a phosphor wavelength converter member configured as an emitter and coupled to the laser diode device; a common support member configured to support the laser diode device and the phosphor member, a heat sink coupled to the common support member, the heat sink configured to transport thermal energy from the laser diode device and phosphor member on the common support member to the heat sink; a submount member configured with the laser diode device to form a chip on submount structure; an output facet configured to the laser diode device to output a laser beam of electromagnetic radiation from the output facet; the electromagnetic radiation being selected from a violet or a blue emission with a first wavelength ranging from 400 nm to 485 nm, the output beam being characterized by a wavelength range, a spectral width, a power, and a spatial configuration: a free space, within a vicinity of the common support member, with a non-guided characteristic capable of transmitting the laser beam from the laser diode device to the phosphor member; and the output laser beam of the laser device being optically coupled to at least one phosphor member; an angle of incidence configured between the laser beam the phosphor member, the phosphor member 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; a transmissive mode characterizing the phosphor member such that the laser beam is incident on an excitation surface of the phosphor member; a white light emitted from at least one emission surface of the phosphor member, the white light emission being comprised of a mixture of wavelengths characterized by at least the second wavelength from the phosphor member; and a form factor characterizing the integrated white light source, the form factor having a length, a width, and a height dimension.