Apparatus and method for measuring optically active materials
First Claim
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1. Apparatus for sensing and measuring optically active material in a sample, comprising:
- a) a light source emitting light of a wavelength that can pass through the sample;
b) a light transparent sample container for holding the sample;
c) a linear polarizer interposed between the light source and the sample for producing a polarized light beam;
d) a symmetrical linear split-field polarizer having a separation angle expressed as ½
δ
=12.5°
-30°
, and a polarity from about 90°
±
45°
to 90°
±
½
°
with respect to the first linear polarizer, said polarizer being fixedly positioned to intercept the polarized light that passed through the sample;
e) detectors to detect the split light beams passing through each polarizer of the split-field polarizer;
f) means to amplify the current or voltage passing through each of the detectors;
g) a differential amplifier;
h) a data processor;
i) a display; and
j) electronic circuitry to operate the apparatus and provide an output on the display.
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Abstract
Apparatus and method for sensing and measuring optically active material in a sample, comprising:
- a) a light source emitting light of a wavelength that can pass through the sample;
- b) a light transparent sample container for holding the sample;
- c) a linear polarizer interposed between the light source and the sample for producing a polarized light beam;
- d) a symmetrical linear split-field polarizer fixedly positioned to intercept the polarized light that passed through the sample;
- e) detectors to detect the split light beams passing through each polarizer of the split-field polarizer;
- f) means to amplify the current or voltage passing through each of the detectors;
- g) a differential amplifier;
- h) a data processor;
- i) a display; and
- j) electronic circuitry to operate the apparatus and provide an output on the display.
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Citations
23 Claims
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1. Apparatus for sensing and measuring optically active material in a sample, comprising:
-
a) a light source emitting light of a wavelength that can pass through the sample; b) a light transparent sample container for holding the sample; c) a linear polarizer interposed between the light source and the sample for producing a polarized light beam; d) a symmetrical linear split-field polarizer having a separation angle expressed as ½
δ
=12.5°
-30°
, and a polarity from about 90°
±
45°
to 90°
±
½
°
with respect to the first linear polarizer, said polarizer being fixedly positioned to intercept the polarized light that passed through the sample;e) detectors to detect the split light beams passing through each polarizer of the split-field polarizer; f) means to amplify the current or voltage passing through each of the detectors; g) a differential amplifier; h) a data processor; i) a display; and j) electronic circuitry to operate the apparatus and provide an output on the display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. Apparatus for sensing and measuring optically active material in a sample, comprising:
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a) a light source emitting light of a wavelength that can pass through the sample; b) a light transparent sample container 30 mm in length for holding the sample; c) a linear polarizer interposed between the light source and the sample for producing a polarized light beam; d) a symmetrical linear split-field polarizer having a polarity from about 90°
±
45°
to 90°
±
½
°
with respect to the first linear polarizer, said polarizer being fixedly positioned to intercept the polarized light that passed through the sample;e) detectors to detect the split light beams passing through each polarizer of the split-field polarizer; f) means to amplify the current or voltage passing through each of the detectors; g) a differential amplifier; h) a data processor; i) a display; and j) electronic circuitry to operate the apparatus and provide an output on the display.
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Specification