Petzval Lens with Extended Spectral Range for Registering Interference Patterns in the Infrared Fourier Spectrometer
| Authors: Kulakova N.N., Permyakov I.A., Tyshkunov N.V. | Published: 17.06.2015 |
| Published in issue: #3(102)/2015 | |
| DOI: 10.18698/0236-3933-2015-3-116-126 | |
| Category: Instrument Engineering, Metrology, Information-Measuring Instruments and Systems | Chapter: Instrumentation and Methods to Transform Images and Sound | |
| Keywords: remote sensing of the Earth, spectrometer, Fourier spectrometer, Petzval lens | |
The article presents calculation of parameters of the Petzval lens with an extended spectral range for registering interference patterns in a working branch of the infrared Fourier spectrometer. It introduces the current application domain of these devices. Some advantages of the devices in comparison with the classical spectral instruments (prismatic and diffraction) are listed. A schematic optical diagram ofthe infrared Fourier spectrometer is described. Some essential relations describing the Fourier spectroscopy technique are given. The appropriate conclusions are drawn. The basic lens of a recording branch in the infrared Fourier spectrometer IRFS-3 was analyzed. The article discusses the results of size and aberration calculations of the Petzval lens parameters with an extended spectral range, which can improve the instrument accuracy. An improved scheme of the infrared Fourier spectrometer with the lens featuring the calculated parameters is suggested. Primary advantages of the new scheme are specified in comparison with the original one.
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