G - Physics – 01 – N
Patent
G - Physics
01
N
73/54
G01N 21/21 (2006.01) G01J 4/04 (2006.01) H03F 3/187 (2006.01) G01J 1/30 (2006.01) G01N 21/35 (2006.01)
Patent
CA 1183364
Abstract A polarimeter system and method for sensing optical rotation caused by optically active materials in a solution are disclosed. The polarimeter system (10) includes a light source (11) for emitting infrared light, a polarizer (14) operatively connected to intercept the infrared light to produce a polarized beam therefrom and means for directing the beam through a sample of optically active material (15), which rotates the light beam. A beam splitting prism (16) splits the rotated polarized beam into its horizontal and vertical components. Infra- red light detectors (17a) and (17b) convert the horizontal and light components into electrical signals represent- ative of the optical rotation caused by the sample solu- tion. Shaping circuitry (26) conditions the electrical signals for use by analog or digital (28) networks, that present the optical rotation or its physical correlative factor. Feedback circuitry (36) may be used to vary the light source (11) intensity in response to the detected light signals.
414980
Kysilka James O.
Sawicki Charles A.
American Crystal Sugar Company
Gowling Lafleur Henderson Llp
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