Device for protecting optical means from contaminated gases

Details Device for protecting optical means from contaminated gases Device for protecting optical means from contaminated gases

B - Operations, Transporting

23

K

15/17, 88/96

B23K 9/32 (2006.01) F16P 1/06 (2006.01) F23J 15/00 (2006.01)

Patent

CA 1291887

Title. Device for protecting optical means from contaminated gases. ABSTRACT A device for protecting optical means from contaminated gases, characterized by a chamber having an inlet for the supply of clean gas, said chamber including at least one opening through which light radiation can pass and a gas outlet, and that there is provided a cover having a window adapted to be placed over said opening, which cover is provided with a slot-like inlet in its inner surface and a slit-like outlet communicating with said inlet and extending along the outer surface of said cover, so that gas supplied from the gas supply inlet in the chamber passes through said chamber and said gas outlet of said chamber and through said slot-like inlet and said slit-like outlet of said cover to flow in laminar fashion over the outer surface of said window.

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