High intensity BBL dimmable light source

Organization Name

Inventor(s)

RIFAT ATA MUSTAFA Hikmet of EINDHOVEN (NL)

High intensity BBL dimmable light source

This abstract first appeared for US patent application 18724222 titled 'High intensity BBL dimmable light source

Original Abstract Submitted

The invention provides a light generating system () comprising a first light generating device (), a second light generating device (), a third light generating device (), a luminescent material (), and a control system (), wherein: (A) the first light generating device () comprises a first laser light source and is configured to generate first device light () having a first device peak wavelength (λ) and having a first spectral power distribution; wherein the first device peak wavelength (λ) is selected from the wavelength range of 445-475 nm; (B) the second light generating device () comprises a second laser light source and is configured to generate second device light () having a second device peak wavelength (λ) and having a second spectral power distribution, different from the first spectral power distribution; wherein the second device peak wavelength (λ) is selected from the range of 420-450 nm or from the range of 470-490 nm; (C) the luminescent material () is excitable by the first device light () and the second device light (); wherein the luminescent material () is configured to convert at least part of one or more of the first device light () and/or the second device light () into luminescent material light () having a centroid wavelength λwithin the green-orange wavelength range; the luminescent material () has an absorbance band having a first absorbance E1 at the first device peak wavelength (λ) and a second absorbance E2 at the second device peak wavelength (λ), wherein E2/E1<1; (D) the third light generating device () comprises a third laser light source and is configured to generate third device light () having a third device peak wavelength () selected from the wavelength range of 600-650 nm; (E) |λ−λ|≥20 nm; λand λare selected from the wavelength range of 420-490 nm; and |λc,−λ|≥20 nm; (F) the control system () is configured to control at least the first light generating device () and the second light generating device (): (G) the light generating system () is configured to provide in an operational mode white system light ().