An LED driving circuit, which is not shown, in the LED module 15 supplies the LED 7R in the “GRB” set 10 at the left end of the light entrance surface 12T with a current which is smaller than a current supplied to the LEDs 7R in {HEAD ~ other LED sets} 10 by {TAIL ~ a predetermined amount} 
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An LED driving circuit , which is not shown , in the LED module 15 supplies the LED 7R in the “ GRB ” set 10 at the left end of the light entrance surface 12 T with a current which is smaller than a current supplied to the LEDs 7R in { HEAD ~ other LED sets } 10 by { TAIL ~ a predetermined amount }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL