Method of coating a transparent substrate

Details Method of coating a transparent substrate Method of coating a transparent substrate

G - Physics

02

B

204/96.06

G02B 5/26 (2006.01) C03C 17/36 (2006.01) C23C 14/00 (2006.01) C23C 14/34 (2006.01)

Patent

CA 1203503

ABSTRACT OF THE DISCLOSURE Optical filters, e.g. for reflecting infrared radiation while passing visible light radiation made by applying to the silver reflective coating a protective coating of a metal oxide by magnetron cathode sputtering and only thereafter is the non-reflec- tive layer applied by magnetron cathode sputtering. The protective coating-oxygen partial pressure and coating rate are substantially less than the non-reflective coating-oxygen partial pressure and coating rate. Apparently the protective coating prevents damage to the reflective coating.

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