Transmitted light refractometer

Details Transmitted light refractometer Transmitted light refractometer

2008-10-23

2011-10-18

Toatley, Gregory J (Department: 2877)

Optics: measuring and testing

Refraction testing

Prism engaging specimen

C356S135000, C356S136000

Reexamination Certificate

active

08040499

ABSTRACT:
A transmitted light refractometer allows high measurement accuracy across a broad measurement range, even under difficult measuring conditions. The transmitted light refractometer can be connected to a process simply via a single access. In accordance with advantageous features, the transmitted light refractometer covers a measurement range for all practically relevant media and includes integrated temperature compensation. A reversing optics unit is arranged relative to an illumination optics unit such that the reversing optics unit deflects a parallel beam through the process liquid and a measurement prism into the transmitted light refractometer back to the side from which it was radiated. The illumination optics unit, an imaging optics unit, and a detector plane are arranged on the light radiation side such that only one process access is needed.

REFERENCES:
patent: 3449051 (1969-06-01), Levitt
patent: 3628867 (1971-12-01), Brady
patent: 4571075 (1986-02-01), Kamrat
patent: 5110205 (1992-05-01), Suzuki et al.
patent: 5347358 (1994-09-01), Nebe et al.
patent: 6067151 (2000-05-01), Salo
patent: 7061597 (2006-06-01), Oberleitner et al.
patent: 30 28 564 (1981-02-01), None
patent: 40 38 123 (1991-06-01), None

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