Interferometric imaging spectrometer and interferometer

Abstract

The invention discloses an interference imaging spectrometer and an interferometer. The interference imaging spectrometer includes a preposed imaging object lens, the interferometer, an imaging coupling mirror, and a photoelectric detector, the interferometer includes two same isosceles trapezoid prisms, the lower bottom surfaces of the two isosceles trapezoids are glued, the glued surfaces are beam splitting surfaces, the upper bottom surfaces of the two isosceles trapezoids are reflection planes, two adjacent waist surfaces of the four waist surfaces of the two isosceles trapezoid prisms are two incent ends of the interferometer, and the other two waist surfaces are two emitting ends of the interferometer. The interference imaging spectrometer is high in sensitivity and compact in structure, easy to realize a high spatial resolution light path, and easy to realize wide coverage imaging, dual-port incident and emitting surfaces can realize full-field-view and full-aperture calibration without the need for an additional auxiliary optical path, and the expansion of the spectrum band can be realized by the reception of dual detectors and the super-resolution imaging can be realized by sub-pixel technology, and the interferometer prisms have the advantages of easy processing and assembling.

Description

technical field [0001] The invention relates to an interference spectrum imaging technology, that is, a Fourier transform spectrum imaging technology, in particular to an interference imaging spectrometer and an interferometer. Background technique [0002] Interference spectral imaging technology can be divided into two types: pupil plane interference and image plane interference in principle. The typical technology of pupil plane interference is spatial modulation interference spectrum imaging technology, which is characterized in that the spectrum of the measured target can be obtained by an interferogram , its spectral information is not affected by the attitude of the carrying platform. This optical path principle is to expand and collimate the energy from the target scene element to the pupil plane, thus limiting its sensitivity. [0003] The technical principle of image plane interference can be divided into equal-tilt interference imaging based on parallel optical pa...

AI Technical Summary

Problems solved by technology

The Mach-Zehnder interferometer has a completely separated dual optical path spectroscopic type, with the characteristics of dual-port input and output, which can easily configure the detection requirements of the imaging optical path, such as the full-field full-aperture calibration can be directly realized in the optical path without additional auxiliary The optical path can be extended by dual detectors or sub-pixel technology can be used to achieve super-resolution imaging. However, due to the complex structure of the interferometer itself and the difficulty in processing and assembly technology, the application is restricted.

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