Optical-fiber refractometer

Details Optical-fiber refractometer Optical-fiber refractometer

2005-12-13

2005-12-13

Stafira, Michael P. (Department: 2877)

Optics: measuring and testing

Refraction testing

C356S133000

Reexamination Certificate

active

06975388

ABSTRACT:
The invention relates to a refractometer and to a method of measuring the refractive index of a medium. An incident light ray is directed onto an interface consisting of a medium of known refractive index and of the medium being studied. Then the intensity of the reflected light ray is measured. The incident and reflected light rays are propagated in an optical fiber section. The ratio between the intensity of the incident ray and the intensity of the reflected ray allows the refractive index of the medium studied to be calculated by means of Fresnel's formulas.

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patent: 0 809 098 (1997-11-01), None
patent: 2 725 788 (1997-01-01), None
patent: WO 82/03460 (1982-10-01), None
patent: WO 90/01697 (1990-02-01), None

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