The filter includes an external light shielding sheet which is composed of a base unit, and a plurality of {HEAD ~ pattern units} that are formed on {TAIL ~ the base unit}, wherein a bottom, which is wider than a top, of the pattern units is formed as a concave shape 
The filter includes an external light shielding sheet which is composed of a base unit , and a plurality of { HEAD ~ pattern units } that are formed on { TAIL ~ the base unit } , wherein a bottom , which is wider than a top , of the pattern units is formed as a concave shape
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 OTH REL REL 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 OTH OTH OTH OTH OTH