Method of keeping measuring window of measuring device clean, an

Details Method of keeping measuring window of measuring device clean, an Method of keeping measuring window of measuring device clean, an

1999-06-24

2000-07-18

Evans, F. L.

Optics: measuring and testing

By shade or color

356429, 359509, G01J 350

Patent

active

060915013

ABSTRACT:
The invention relates to a method of keeping a measuring window of a measuring device clean, and to a measuring device. Gas is blown onto the surface of the measuring window (2) of the measuring device (1). Gas is guided onto the measuring window (2) by a nozzle (3) which is substantially on the same level with the measuring window (2).

REFERENCES:
patent: 3426200 (1969-02-01), Lehman et al.
patent: 3662174 (1972-05-01), McMullen et al.
patent: 4266142 (1981-05-01), Crawford
patent: 4602160 (1986-07-01), Mactaggart
patent: 5115342 (1992-05-01), Rowe et al.
patent: 5331178 (1994-07-01), Fukuda et al.

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