Analysis apparatus for spectrometer signals with fourier transform output
Abstract
Abstract A LIGHT GENERATING CELL, SUCH AS A LUMINESCENT DIODE PROJECTS ITS LIGHT ON A FILM TO BE SCANNED THEREACROSS. THE AMOUNT OF LIGHT EMITTED BY THE DIODE IS CONTROLLED BY THE OUTPUT OF THE SPECTROMETER, SO THAT THE DENSITY OF THE FILM, WHERE EXPOSED BY THE LIGHT EMITTING DIODE, WILL VARY; SIMULTANEOUSLY, THE SCANNING OF THE DIODE ACROSS THE FILM IS SYNCHRONIZED WITH THE POSITION OF THE SPECTROMETER DISPLACEMENT AND THE SPEED OF SCAN CONTROLLED TO BE A FUNC- TION OF THE DURATION OF THE SIGNAL BEING STUDIED; IN ONE FORM OF THE INVENTION, THE SIGNAL IS SAMPLED AT PREDETERMINED INTERVALS AND A PULSE OF GIVEN INTENSITY, BUT OF VARIABLE TIME DURATION, APPLIED TO THE DIODE, IN ACCORDANCE WITH THE SIGNAL FROM THE SPECTROMETER, TO ELIMINATE DISTORTION DUE TO NON-LINEARITIES IN FILM AND DIODE RESPONSE.
Inventors
- 👤 Georges Hepner
Bibliographic Details
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