In this paper, we have reported on a near-infrared diamond anti-reflective
filter window and its application in industry. Using the hot filament chemi
cal vapor deposition (HFCVD) method, a near-infrared diamond anti-reflectiv
e filter window was designed and fabricated. The detector with the diamond
window was successfully used in the on-line position monitoring of seamless
steel tubes at the Shanghai Baosteel Works. It was sensitive and reliable,
and worked very well in the high temperature, corrosive environment. (C) 2
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