In order to make the shortage of blue components at the arbitrary point relatively small, control is performed to make {HEAD ~ the light output} of the LED 7R in the “GRB” set 10 at the left end of {TAIL ~ the light entrance surface} 12T smaller than that of other LEDs 7R 
In order to make the shortage of blue components at the arbitrary point relatively small , control is performed to make { HEAD ~ the light output } of the LED 7R in the “ GRB ” set 10 at the left end of { TAIL ~ the light entrance surface } 12 T smaller than that of other LEDs 7R
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH