Instrument for measuring the refractive index of a fluid

Details Instrument for measuring the refractive index of a fluid Instrument for measuring the refractive index of a fluid

1998-07-30

2000-10-10

Le, Que T.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356361, G01N 1506

Patent

active

061304395

ABSTRACT:
The invention concerns in particular, an instrument for measuring the refractive index of a fluid, particularly seawater. Its object is more specifically an instrument for measuring the refractive index of a fluid having a sensor machined to contain the fluid whose refractive index is to be measured, a coherent light source which illuminates the sensor via at least one beam of coherent light, a photodetector, and processor means with which the refractive index of the fluid can be determined from the interference fringes produced by transmission and/or reflection interferences of the beam at the various optical interfaces of the sensor.

REFERENCES:
patent: 4699951 (1987-10-01), Allenson et al.
patent: 5073024 (1991-12-01), Valette et al.
patent: 5151752 (1992-09-01), Oono et al.

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