G - Physics – 01 – N
Patent
G - Physics
01
N
73/54
G01N 21/41 (2006.01) G01N 21/43 (2006.01)
Patent
CA 1207550
ABSTRACT A refractometer system and method for determining the refractive index of a liquid are disclosed. The refractometer system (10) includes a light source (11) for emitting light and a polarizer (14) operatively connected to intercept at least a portion of the emitted light for producing a polarizer light beam. A prism (38) having a first surface (38a) defining a plane of incidence is included. The prism (38) is operatively connected to be adapted so that a liquid (75) may be held in contact with the first surface (38a) defining a prism/liquid interface. Means of directing the polar- ized light beam through the prism (38) toward the prism/liquid interface is provided. A first portion of the polarized light is refracted into the liquid (75) and a second portion is reflected. A means for detec- tion (53) is provided, whereby the refractive index of the liquid (75) to be measured can be determined. In a preferred embodiment, the detector (53) comprises means for splitting the reflected light beam into two orth- ogonol light beam components, means for receiving and sensing (57) and (57a) the orthogonol light beam compon- ents; and means for determining intensity of the two orthogonal light beam components.
439228
Dahl Randolf L.
Kysilka James O.
American Crystal Sugar Company
Gowling Lafleur Henderson Llp
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