US 10,502,882 B2 · Light source

Abstract

There is provided a light source arranged to output light at a first wavelength. The light source comprises a luminescent concentrator having a slab-shaped geometry. The luminescent concentrator comprises: an input port arranged to receive light and define a first area; an output port arranged to transmit light and define a second area which is smaller than the first area; and surfaces arranged to direct light inside the luminescent concentrator to the output port. The luminescent concentrator further comprises lumophores arranged to receive light at a second wavelength and emit light at the first wavelength; and a pump light supply coupled to the input port and arranged to illuminate the input port with light at the second wavelength.

Claims18

Dependent claims

A light source arranged to output light at a first wavelength, the light source comprising:

a luminescent concentrator having a slab-shaped geometry with a width to thickness ratio of greater than 7:1, the luminescent concentrator comprising:
an input port arranged to receive light and define a first area;
an output port arranged to transmit light and define a second area which is smaller than the first area;
surfaces arranged to direct light inside the luminescent concentrator to the output port;
wherein the luminescent concentrator further comprises lumophores arranged to receive light at a second wavelength and emit light at the first wavelength;
and
a pump light supply coupled to the input port and arranged to illuminate the input port with light at the second wavelength.

4 more elements

Dependencies are inferred from the claim text.

Light source

Life of this patent

Light source

Life of this patent

Abstract

Claims18