Field diaphragm assembly for spectrometer adjustment test
A field diaphragm and spectrometer technology, which is applied in the field of assembling and testing field diaphragm components, can solve the problems that the spatial resolution of the spectrometer cannot be quantitatively given, the installation and adjustment cannot reflect the best level of the instrument, and the accuracy is limited.
Active Publication Date: 2015-12-16
上海济物光电技术有限公司
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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 resolu
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[0027] Assume that the linear field of view of the image plane of the imaging spectrometer telescope is 33mm×0.016mm, the magnification of the spectrometer is -1, the size of the detector is 2048 yuan×256 yuan, and the pixel size is 0.016mm×0.016mm. according to figure 1 The schematic diagram of the field diaphragm assembly for the installation and adjustment test is designed, and a field diaphragm assembly for the installation and adjustment test is designed, which can be used for the photoelectric joint adjustment of the spectrometer of the imaging spectrometer. The thickness of the field diaphragm substrate is 1mm, and a two-dimensional pattern is made on one surface, and the parameters are listed in Table 1.
[0028] Table 1 Parameters of aperture substrate and two-dimensional pattern
[0029] L
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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...
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Inventor 袁立银陈爽钱立群何志平王跃明
Owner 上海济物光电技术有限公司
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