An infrared filter that is formed as a laminated structure including {TAIL ~ a plurality} of {HEAD ~ layers} having substantially uniform thicknesses 
An infrared filter that is formed as a laminated structure including { TAIL ~ a plurality } of { HEAD ~ layers } having substantially uniform thicknesses
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH