Lighting system with enhanced color gamut

A light generating system comprising (i) one or more light generating devices and (ii) two or more luminescent materials, wherein:

• the one or more light generating devices are configured to generate device light;
• wherein the one or more light generating devices comprise a first light generating device;
• wherein the first light generating device comprises a solid state light source;
• the first light generating device is configured to generate first device light having a peak wavelength selected from the range of 440-460 nm;
• the two or more luminescent materials are configured to generate luminescent material light;
• wherein the two or more luminescent materials comprises a first luminescent material and a second luminescent material;
• the first luminescent material is configured to convert at least part of the first device light into first luminescent material light having a peak wavelength selected from the range of 495-580 nm, and a full width half maximum selected from the range of 25-120 nm;
• the second luminescent material is configured to convert at least part of the first device light and/or part of the first luminescent material light into second luminescent material light having a peak wavelength selected from the range of 600-680 nm, wherein the second luminescent material at least comprises (i) a luminescent material configured to provide luminescent material light in said wavelength range having a full width half maximum selected from the range of 50-140 nm, and (ii) a luminescent material configured to generate luminescent material light having a peak wavelength selected from the range of 600-680 nm and having one or more emission lines having a full width half maximum selected from the range of up to 40 nm;
• the light generating system is configured to generate white system light comprising at least part of the device light and at least part of the luminescent material light, wherein the white system light has a correlated color temperature (CCT);
• and
• the light generating system is configured such that the system light complies with the following conditions:
• a luminous efficacy of radiation (LER) above the equation LERmin=0.90*(−5.946E-13*x4+1.247E-08*x3−9.622E-05*x2+3.115E-01*x+6.0);
• an area F1 in the CIE 1976 u′v′ chromaticity space enclosed by the 85 test-color samples of the Farnsworth-Munsell 100 (FM100) Hue Test has a value smaller than given by the equation F1max=(−5.519E-15*x3−4.380E-11*x2+1.724E-06*x+1.17E-03)±10% and a larger value than given by the equation F1 min=(F1max−1.67E-03)±10%;
• a first radiant flux E1 within the wavelength range of 380-490 nm, relative to a total radiant flux Et in the wavelength range of 380-780 nm is below the equation E1max/Et=(3.207E-11*x3−1.097E-06*x2+1.297E-02*x−10.3)±10% and above the equation E1 min/Et=(E1max/Et−6.5)±10%;
• a second radiant flux E2 within the wavelength range of 491-600 nm, relative to a total radiant flux Et in the wavelength range of 380-780 nm is below the equation E2max/Et=(3.444E-10*x3−5.329E-06*x2+2.611E-02*x+7.7)±10% and above the equation E2 min/Et=(E2max/Et−6.5)±10%;
• a third radiant flux E3 within the wavelength range of 600-780 nm, relative to a total radiant flux Et in the wavelength range of 380-780 nm is below the equation E3max/Et=(−2.988E-10*x3+5.192E-06*x2−3.294E-02*x+103)±10% and above the equation E3 min/Et=(E3max/Et−6.5)±10%;
• and
• wherein x is the correlated color temperature, which is selected from the range of 1800-4500 K;
• and
• the color rendering index is at least 70;
• and
• the red color rendering index (R9) is above the equation R9,min=(7.84E-11*x3−2.54E-06*x2+2.77E-02*x−90)±10%.