Patent ID: 8319252

Claim:
A light emitting device, comprising: a first light emitting diode (LED) group including at least a blue light LED, the blue light LED emitting light having a dominant wavelength in a range between 400 nm and 480 nm; a second LED group including at least a red-orange light LED, the red-orange light LED emitting light having a dominant wavelength in a range between 610 nm and 630 nm; a group of luminophor layers located above the first LED group, being able to be excited by a portion of the light emitted by the first LED group to emit light having a dominant wavelength in a range between 500 nm and 555 nm; a transparent layer located above the first LED group and the second LED group; an anti-reflective coating above the transparent layer; and an input terminal connected to the first LED group and the second LED group, for providing energy to enable the first LED group and the second LED group to emit light; wherein a mixture of light of the light emitted by the first LED group and fluorescence emitted by exciting the group of luminophor layers falls in an area constructed of six point coordinates and six line segments within the CIE 1931 color space, the six coordinates being sequentially a first point (0.359, 0.481), a second point (0.320, 0.520), a third point (0.220, 0.320), a fourth point (0.260, 0.285), a fifth point (0.359, 0.379), and a sixth point (0.319, 0.399), and the six line segments including a first line segment connecting the first point and the second point, a second line segment connecting the second point and the third point, a third line segment connecting the third point and the fourth point, a fourth line segment connecting the fourth point and the fifth point, a fifth line segment connecting the fifth point and the sixth point, and a sixth line segment connecting the sixth point and the first point.