A method for simulating an international commission on illumination (CIE) standard illuminant with a multi-channel light emitting diode (LED), comprising:
- selecting a high color rendering index (CRI) LED as a main light source to form a main light source control channel according to a color temperature adjustment direction within a color temperature range of the CIE standard illuminant to be simulated;
- a display index of the main light source control channel is greater than 90%;
- selecting a plurality of LEDs with n kinds of wavelengths for supplementing a spectral wavelength coverage of the CIE standard illuminant to be simulated to form a wavelength complementary control channel by comparing a spectral wavelength coverage of the selected main light source with the spectral wavelength coverage of the CIE standard illuminant to be simulated;
- wherein the n≥1;
- the wavelength of each of the plurality of LEDs with n kinds of wavelengths is 380-420 nm;
- wherein a number of LEDs of each wavelength within the plurality of LEDs with n kinds of wavelengths is determined according to a relative radiant emittance of wavelength of the plurality of LEDs with n kinds of wavelengths within the standard illuminant of the wavelength complementary control channel within the spectral wavelength coverage of the CIE standard illuminant to be simulated and a radiant emittance of wavelength of LED of each wavelength within the plurality of LEDs with n kinds wavelength;
- the wavelength complementary control channel is formed by corresponding number of LEDs with n kinds of wavelengths;
- selecting an LED as a light source of a color temperature adjustment control channel and a filter to form the color temperature adjustment control channel according to a color temperature simulation range and the color temperature adjustment direction of the CIE standard illuminant to be simulated;
- wavelength of the color temperature adjustment control channel light source is formed by the LED and a transparent body of a mixed pigment;
- a material of the mixed pigment comprises pigments, dyes, phosphors, quantum dots, which absorbs part of the spectrum and emits light of the wavelength, or can be cured or formed into a transparent object covering and sandwiching the pigment;
- arranging the main light source control channel, the wavelength complementary control channel and the color temperature adjustment control channel according to vertical distances between an anti-glare homogenize lens and the high color rendering index LED, the plurality of LEDs with n kinds of wavelength and the LED and a ratio of the vertical distances to form a tightly spaced group, and replicating the group to achieve a required maximum illumination;
- adjusting a brightness of the main light source control channel, the wavelength complementary control channel, the color temperature adjustment control channel to make a mixed chromaticity coordinate meet a chromaticity coordinate of the CIE standard illuminant to be simulated according to chromaticity coordinates of a chromaticity measurement.