Optical element having a catalytic coating to promote oxidation

Details Optical element having a catalytic coating to promote oxidation Optical element having a catalytic coating to promote oxidation

1983-06-14

1985-06-04

Henry, Jon W.

G02B 110

Patent

active

045210888

ABSTRACT:
A radiation pyrometer for a gas-turbine engine has a sapphire lens that focusses radiation from the turbine blades onto the end of a fibre-optic cable. The front, exposed surface of the lens has a vapor deposited layer comprising a mixture of platinum and aluminum oxide which acts as a catalyst to promote oxidation of soot to a gaseous form and thereby reduce contamination of the lens.

REFERENCES:
patent: 3861802 (1975-01-01), Belmear
patent: 4358952 (1982-11-01), Maurer et al.
patent: 4418661 (1983-12-01), Esper et al.
S. C. Crossan et al., "Window Protection", IBM Tech. Disc. Bull., vol. 19, No. 6, Nov. 1976, pp. 1985-1986.

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