A light source module, comprising a first light-emitting unit, a second light-emitting unit and a third light-emitting unit that are electrically independent of one another;
- wherein:
- the first light-emitting unit comprises a first light-emitting source, a first encapsulant covering the first light-emitting source, and a first phosphor body;
- light emitted by the first light-emitting unit comprises at least three spectral emission peaks;
- a first peak wavelength is in a range of 430-445 nm;
- a second peak wavelength is in a range of 460-480 nm, and a spectral intensity at the second peak wavelength is 60-90% of a spectral intensity at the first peak wavelength;
- a third peak wavelength is in a range of 520-550 nm, and a spectral intensity at the third peak wavelength is 20-50% of a spectral intensity at the first peak wavelength;
- a light color of the first light-emitting unit is blue-green light falling within a quadrilateral region enclosed by four points of A1 (0.24, 0.26), A2 (0.26, 0.31), A3 (0.29, 0.26) and A4 (0.26, 0.23) on a CIE 1931 chromaticity diagram;
- the second light-emitting unit comprises a second light-emitting source, a second encapsulant covering the second light-emitting source, and a second phosphor body;
- light emitted by the second light-emitting unit comprises at least three spectral emission peaks;
- a first peak wavelength is in a range of 445-460 nm;
- a second peak wavelength is in a range of 520-550 nm, and a spectral intensity at the first peak wavelength is 40-70% of a spectral intensity at the second peak wavelength;
- a third peak wavelength is in a range of 560-590 nm, and a spectral intensity at the third peak wavelength is 70-100% of a spectral intensity at the second peak wavelength;
- a light color of the second light-emitting unit is green light falling within a quadrilateral region enclosed by four points of B1 (0.33, 0.42), B2 (0.36, 0.47), B3 (0.40, 0.45) and B4 (0.37, 0.42) on the CIE 1931 chromaticity diagram;
- the third light-emitting unit comprises a third light-emitting source, a third encapsulant covering the third light-emitting source, and a third phosphor body;
- light emitted by the third light-emitting unit comprises at least two spectral emission peaks;
- a first peak wavelength is in a range of 630-680 nm;
- a second peak wavelength is in a range of 540-580 nm, and a spectral intensity at the second peak wavelength is 10-40% of a spectral intensity at the first peak wavelength;
- a light color of the third light-emitting unit is orange-red light falling within a quadrilateral region enclosed by four points of C1 (0.53, 0.42), C2 (0.56, 0.43), C3 (0.60, 0.39) and C4 (0.55, 0.39) on the CIE 1931 chromaticity diagram.