Lighting device

A lighting device comprising:

• a first light-emitting device;
• a plurality of second light-emitting devices;
• and
• a control unit,
• wherein the first light-emitting device has a first emission spectrum that has a first peak wavelength in a wavelength range from 360 nm to 430 nm and in which a light intensity continuously decreases with decreasing wavelength from the first peak wavelength,
• wherein each of the plurality of second light-emitting devices has a second emission spectrum that has a second peak wavelength in the wavelength range from 360 nm to 430 nm, that has a third peak wavelength in a wavelength range from the second peak wavelength to 750 nm, and in which a light intensity continuously decreases with decreasing wavelength from the second peak wavelength and with increasing wavelength from the third peak wavelength,
• wherein the control unit controls the first light-emitting device and the plurality of second light-emitting devices,
• wherein the third peak wavelengths of the plurality of second light-emitting devices differ from each other,
• wherein the first peak wavelength is equal to at least one of the second peak wavelengths, and
• wherein the second peak wavelength of each of the plurality of second light-emitting devices are equal.