Light source module, lighting system and lamp

A lighting system, comprising:

• a light source and a driving circuit;
• the light source comprises at least one of the light source module that comprises:
• a first light-emitting unit, a second light-emitting unit and a third light-emitting unit which electrically independent from one another;
• the first light-emitting unit comprises a first light-emitting diode (LED) chip, a first packaging body covering the first LED chip and a first phosphor, a wavelength of a dominant emission peak of light emitted by the first light-emitting unit is 445 nm to 460 nm, a wavelength of a secondary emission peak of the light emitted by the first light-emitting unit is 480 nm to 500 nm, and peak intensity of the secondary emission peak is 10% to 50% of peak intensity of the dominant emission peak, a light color of the light emitted by the first light-emitting unit is blue-green light located in a quadrilateral region enclosed by four points A1(0.18,0.22), A2(0.22,0.28), A3(0.24,0.21) and A4(0.19,0.18) on a CIE 1931 chromaticity diagram;
• the second light-emitting unit comprises a second LED chip, a second packaging body covering the second LED chip and a second phosphor;
• a wavelength of a dominant emission peak of light emitted by the second light-emitting unit is 530 nm to 580 nm with a spectral half-width of 90 nm to 130 nm;
• a light color of the light emitted by the second light-emitting unit is yellow-green light located in a quadrilateral region enclosed by four points B1(0.38,0.51), B2(0.40,0.58), B3(0.45,0.53) and B4(0.43,0.46) on the CIE 1931 chromaticity diagram;
• the third light-emitting unit comprises a third LED chip, a third packaging body covering the third LED chip and a third phosphor, a wavelength of a dominant emission peak of light emitted by the third light-emitting unit is 620 nm to 655 nm, a wavelength of a secondary emission peak of the light emitted by the third light-emitting unit is 550 nm to 580 nm, and peak intensity of the secondary emission peak is 0% to 40% of peak intensity of the dominant emission peak, a light color of the light emitted by the third light-emitting unit is orange-red light located in a quadrilateral region enclosed by four points C1(0.55,0.40), C2(0.56,0.44), C3(0.68,0.32) and C4(0.65,0.31) on the CIE 1931 chromaticity diagram;
• and
• the driving circuit is electrically connected to and supplies power to the first light-emitting unit, the second light-emitting unit and the third light-emitting unit respectively, and independently controls current/voltage supplied to each of the first light-emitting unit, the second light-emitting unit and the third light-emitting unit.