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