Lighting device with an improved performance while mimicking sunlight

A light generating system comprising (a) a plurality of sets of light generating devices and (b) a luminescent material, wherein:

• the light generating devices are configured in an array;
• the light generating devices are configured to generate device light;
• wherein the light generating devices comprise solid state light sources;
• the plurality of sets of light generating devices comprises at least three sets of light generating devices, wherein the light generating devices of different sets mutually differ in peak wavelengths of the device light, wherein at least one set of light generating devices is configured to generate device light having a peak wavelength in the blue wavelength range of 420-495 nm, wherein at least two different sets of light generating devices are configured to generate device light comprising UV radiation with at least two different peak wavelengths in the UV wavelength range of 100-380 nm;
• and wherein the difference between the at least two different peak wavelengths of the device light is at least 30 nm;
• the luminescent material is configured downstream of the array of light generating devices;
• wherein the luminescent material is configured to convert part of the device light into luminescent material light;
• wherein at least 80% of a radiant flux of the luminescent material light is due to conversion of the device light having the peak wavelength in the blue wavelength range;
• the light generating devices and the luminescent material are configured such that at least part of the device light comprising the UV radiation with the at least two different peak wavelengths in the UV wavelength range of 100-380 nm is transmitted by the luminescent material;
• and
• the luminescent material comprises (a) a luminescent material of the type A3B5O12:Ce, wherein A comprises one or more of Y, La, Gd, Tb and Lu, and wherein B comprises one or more of Al, Ga, In and Sc, and (b) a luminescent material of the type M′xM2-2xAX6 doped with tetravalent manganese, wherein M′ comprises an alkaline earth cation, wherein M comprises a cation, and x is in the range of 0-1, wherein A comprises a tetravalent cation, wherein X comprises a monovalent anion, at least comprising fluorine.