Light generating device having improved performance for disinfection and general lighting

Abstract

The present invention relates to a light generating device () configured to generate device light (), the light generating device comprising a first laser light source (), a first frequency doubling element (), a first luminescent element (), and a light exit window (). The first laser light source () is arranged for generating first laser light () being at least one of violet laser light having a first peak wavelength λselected from a spectral wavelength range from 380 to 420 nm and blue laser light having a second peak wavelength λselected from a spectral wavelength range from 420 to 490 nm. The first laser light () comprises at least a first portion (') and a second portion (″). The first frequency doubling element () is arranged for converting at least a portion of the first portion (′) of the first laser light () emitted by the first laser light source () into a first frequency doubled light () having a third peak wavelength λselected from a spectral wavelength range from 190 to 245 nm. The first luminescent element () comprises a first luminescent material configured to convert at least a portion of the second portion (″) of the first laser light () into a first converted light () having a fourth peak wavelength λin one or more of (a) the green spectral wavelength range and (b) the yellow spectral wavelength range. The light exit window () is arranged to release the device light () comprising the first frequency doubled light () and the first converted light ().