Field diaphragm assembly for spectrometer adjustment test

Abstract

The invention discloses a field diaphragm assembly for spectrometer adjustment test, which comprises a diaphragm seat and a diaphragm substrate. One surface of the diaphragm substrate has a two-dimensional pattern; the two-dimensional pattern is a group of regularly-distributed light and shade stripes in a central field, a middle field and an edge field. When a mercury lamp light source is combined to light the field diaphragm, six-dimensional adjustment of a detector in relative to the field diaphragm can be carried out at the same time, rotation disorder of a grating in relative to the field diaphragm can be detected, and grating adjustment is carried out. When a complex color light source is combined to light the field diaphragm, the spatial imaging quality of the central field, the middle field and the edge field of the spectrometer can be tested. According to the field diaphragm assembly with the two-dimensional pattern, the problems that states of a spectral dimension and a spatial dimension on a detector array can not be observed conveniently during the traditional single-slit field diaphragm photoelectric joint adjusting process can be solved, and the adjustment efficiency and the adjusting precision can be effectively improved.

Description

technical field [0001] The invention relates to an assembly and test assembly of an imaging spectrometer in the field of remote sensing detection, and specifically refers to a field diaphragm for installation and test used in the photoelectric joint adjustment process of a pushbroom-type airborne or space-borne imaging spectrometer. components. Background technique [0002] Imaging spectrometer occupies an important position in the field of remote sensing detection. It can not only obtain the appearance characteristics of the detected target, but also analyze its material composition. The push-broom imaging spectrometer, during the push-broom flight on the ground, passes through a one-dimensional field diaphragm, passes through the spectrometer for spectroscopic imaging, and uses a two-dimensional area array detector to simultaneously receive the spatial dimension and spectral dimension information of the ground object. [0003] Representative instruments of pushbroom imagi...

AI Technical Summary

Problems solved by technology

However, this method has limited accuracy

An extreme example is that for an instrument with relatively large spectral sampling and relatively high spatial resolution, the adjustment of several spectral lines of the mercury lamp cannot achieve the best spatial resolution, so the installation and adjustment of the instrument cannot reflect the best performance of the instrument itself. The optimal level; and the spatial resolution of the spectrometer cannot be given quantitatively during the installation and adjustment process

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