Compensating for effects of variations in gas refractivity...

Optics: measuring and testing – By light interference – For refractive indexing

Reexamination Certificate

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C356S500000

Reexamination Certificate

active

06842256

ABSTRACT:
Methods and system for compensating for effects of changes and variations of gas refractivity in a measurement and/or reference beam path of an interferometer are disclosed.

REFERENCES:
patent: 5877843 (1999-03-01), Takagi et al.
patent: 5991033 (1999-11-01), Henshaw et al.
patent: 6417927 (2002-07-01), de Groot
patent: 20020048026 (2002-04-01), Isshiki et al.
patent: 20030128369 (2003-07-01), Hill

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