Spectrophotometric instrument with rapid scanning distortion...

Details Spectrophotometric instrument with rapid scanning distortion... Spectrophotometric instrument with rapid scanning distortion...

G - Physics

01

J

73/55

G01J 3/28 (2006.01) G01J 3/433 (2006.01)

Patent

CA 2026327

In a spectrophotometric instrument, a system is provided to correct for distortion caused by rapid scanning of the spectrum. In the instrument, photodetectors detect light energy which is scanned through a spectrum at a rapid rate. An amplifier amplifies the output signal generated by the photodetectors. The output signal of the amplifier is sampled at increments and the samples are converted to digital values. A first derivative is determined from the digital values by subtracting from each value the value from the preceding increment. The first derivative values are multiplied times a constant selected to correct for the distortion and the resulting product values are added to the amplitude digital values to provide a set of corrected values representing the intensity detected by the photo-detectors.

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