Light emitting device with color adjustment and color temperature adjustment functions

A light emitting device, comprising:

• a red light emitting unit, a blue light emitting unit, a green light emitting unit, and a white light emitting unit;
• wherein the red light emitting unit comprises a first blue light emitting chip and a red fluorescent material, and a dominant wavelength of a light emitted by the red light emitting unit is in a range of 615 nm to 635 nm;
• wherein an FWHM of a white light emitted by the white light emitting unit is less than or equal to 110 nm;
• and
• wherein an emission spectrum of the light emitting device has a first peak in a wavelength of 460 nm to 475 nm and a second peak in a wavelength of 515 nm to 535 nm;
• an emission spectrum of the red light emitting unit has a third peak in a wavelength of 615 nm to 635 nm;
• and an FWHM corresponding to the first peak increases with the increase of a color temperature of the light emitting device, the second peak increases with the increase of the color temperature of the light emitting device, and the third peak decreases with the increase of the color temperature of the light emitting device.