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.
| Original language | English |
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| Patent number | US20170329065A1 |
| Priority date | 21/10/14 |
| Filing date | 21/10/15 |
| Publication status | Published - 16 Nov 2017 |
| Externally published | Yes |