{HEAD ~ The filter} 11, wherein {TAIL ~ a refractive index} of the plurality of pattern units is 0.3 1 times a refractive index of the base unit 
wherein
{ HEAD ~ The filter } 11 , wherein { TAIL ~ a refractive index } of the plurality of pattern units is 0.3 1 times a refractive index of the base unit
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH