Dual interferometer apparatus compensating for environmental tur

Details Dual interferometer apparatus compensating for environmental tur Dual interferometer apparatus compensating for environmental tur

1995-09-22

1996-12-17

Gonzalez, Frank

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356361, G01B 902

Patent

active

055859224

ABSTRACT:
In this invention, in order to realize an interferometer apparatus which can correct a measurement error caused by a change in refractive index due to a fluctuation of a gas such as air with high precision, and can assure a high-precision, stable measurement, first and second interferometer means are arranged, and two measurement reflection means are integrally moved while a predetermined relationship is held between measurement optical path lengths and reference optical path lengths formed by the two interferometer means.

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patent: 5280341 (1994-01-01), Nonnenmacher et al.
patent: 5313271 (1994-05-01), Chaney
patent: 5404222 (1995-04-01), Lis

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