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