A light emitting device 1, wherein said predetermined distance is in {TAIL ~ the range} of 1 μm to {HEAD ~ 10 mm} 
A light emitting device 1 , wherein said predetermined distance is in { TAIL ~ the range } of 1 μm to { HEAD ~ 10 mm }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD