HIGH INTENSITY LIGHT SOURCE WITH HIGH CRI FOR LOW CTT USING GREEN LASER PUMPED PHOSPHOR
Abstract:
The invention provides a light generating device (1000) configured to generate device light (1001), wherein the light generating device (1000) comprises a first light source (110), a second light source (120), and a first luminescent material (210), wherein: the first light source (110) is configured to generate blue first light source light (111) having a first peak wavelength λ1 selected from the spectral wavelength range of 440- 480 nm, wherein the first light source (110) is a first laser light source (10); the second light source (120) is configured to generate green second light source light (121) having a second peak wavelength λ2 selected from the spectral wavelength range of 495-570 nm, wherein the second light source (120) is a second laser light source (20); the first luminescent material (210) is configured to convert part of the second light source light (121) into first luminescent material light (211) having a first luminescent material dominant wavelength λdL1 in the spectral wavelength range of 575-605 nm; the light generating device (1000) is configured to provide in a first operational mode white device light (1001) comprising the first light source light (111), the second light source light (121), and the first luminescent material light (211), with a correlated color temperature selected from the range of equal to or smaller than 3200 K and a color rendering index of equal to or larger than 80.
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