US Patent No. 10,495,286

HIGH INTENSITY LIGHT SOURCE WITH TEMPERATURE INDEPENDENT COLOR POINT


Patent No. 10,495,286
Issue Date December 03, 2019
Title High Intensity Light Source With Temperature Independent Color Point
Inventorship Rifat Ata Mustafa Hikmet, Aachen (DE)
Roman Hohn, Aachen (DE)
Assignee LUMILEDS LLC, San Jose, CA (US)

Claim of US Patent No. 10,495,286

1. A lighting device comprising a lighting unit, wherein the lighting unit comprises a light source configured to generate light source light and a luminescent material configured to convert at least part of the light source light into luminescent material light, wherein the lighting device is configured to generate lighting device light comprising at least part of said luminescent material light, wherein the luminescent material is configured to provide said luminescent material light upon excitation by said light source light in an excitation band (EX) of said luminescent material, wherein the light source is configured to provide said light source light with a full width half maximum (FWHM) of equal to or less than 30 nm, and wherein said light source is configured to excite the luminescent material in an isosbestic point (IP) of said excitation band (EX).