WHITE LIGHT SOURCE
Number of patents in Portfolio can not be more than 2000
United States of America
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Issued Date -
Dec 19, 2024
app pub date -
Oct 10, 2022
filing date -
Oct 10, 2022
priority date (Note) -
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status (Latency Note)
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Abstract
The invention provides a light generating system (1000) comprising (a) first light generating device (110), (b) a first laser (2100), and (c) a second laser (2200), wherein:—the first light generating device (110) is configured to generate first device light (111) having a first device centroid wavelength (λcd,1), wherein the first light generating device (110) comprises one or more of a solid state material laser and a super luminescent diode; —the first laser (2100) comprises a first lanthanide based luminescent material (2110) configured to convert at least part of the first device light (111) having the first device centroid wavelength (λcd,1) into first luminescent material light (2111), wherein the first laser (2100) is configured downstream of the first light generating device (110) and is configured to provide first laser light (2101) comprising at least part of the first luminescent material light (2111), wherein the first laser light (2101) has a first centroid laser wavelength (λcl,1) in the visible; —the second laser (2200) comprises a second lanthanide based luminescent material (2210) configured to convert at least part of the first device light (111) having the first device centroid wavelength (λcd,1) into second luminescent material light (2211), wherein the second laser (2200) is configured downstream of the first light generating device (110) and is configured to provide second laser light (2201) comprising at least part of the second luminescent material light (2211), wherein the second laser light (2201) has a second centroid laser wavelength (λcl,2) in the visible, wherein |λcl,2−λcl,1|≥25 nm; —the first centroid laser wavelength (λcl,1) and the second centroid laser wavelength (λcl,2) are selected from different wavelength ranges from C the group of (i) 495-570 nm, (ii) 570-590 nm, (iii) 590-620 nm, and (iv) 620-780 nm, and—in a first operational mode of the light generating system (1000) the light generating system (1000) is configured to provide system light (1001) comprising the first laser light (2101) and the second laser light (2201), and wherein in the first operational mode the system light (1001) is white light.
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