Thus, {HEAD ~ the LED 7R} at the left end of the light entrance surface 12T can be made to emit {TAIL ~ a quantity} of light smaller than that from the other LEDs 7R by a predetermined amount 
made to emit
Thus , { HEAD ~ the LED 7R } at the left end of the light entrance surface 12 T can be made to emit { TAIL ~ a quantity } of light smaller than that from the other LEDs 7R by a predetermined amount
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH