One-dimensional imaging heterodyne spectrometer's field diaphragm installation structure and field detection method

Abstract

The invention discloses a one-dimensional imaging heterodyne spectrometer field diaphragm installation and adjustment structure and a field of view detection method. The installation and adjustment structure consists of a cylindrical mirror assembly, a working band filter, a spectral dimension field diaphragm, and a collimating lens. , interferometer components, imaging lens and space-dimensional field of view diaphragm; the equipment involved in the installation and adjustment structure and field of view detection method consists of a star point plate, a monitoring band filter, a collimator, a movable reticle and a Gaussian eyepiece. The present invention adopts the adjustment and the field of view detection of the spectral dimension field of view diaphragm under the monitoring band, and the positioning of the spectral dimension field of view diaphragm in the optical axis direction under the working band by trimming the thickness of the spacer, and by modifying the formula, obtains the spectral dimension Field of view size. Utilizing the imaging characteristics of the one-dimensional imaging spatial heterodyne spectrometer, by changing the position of the star point on the real image surface of the collimator, the spectrometer is imaged at different positions of the space-dimensional field diaphragm, and the size of the space-dimensional field of view is obtained through theoretical calculation.

Description

technical field [0001] The invention relates to the field of field of view optical systems, in particular to a field diaphragm installation structure and a field of view detection method of a one-dimensional imaging heterodyne spectrometer. Background technique [0002] Spatial heterodyne spectroscopy has been widely concerned and applied in astronomical observations, especially the quantitative detection of trace gases. Spatial heterodyne spectroscopy is mainly used in the quantitative detection of trace gases such as methane, carbon dioxide, oxygen, and water vapor in the atmosphere. [0003] In recent years, the traditional non-imaging spatial heterodyne spectroscopy technology has been developed into one-dimensional imaging, two-dimensional imaging and other forms of spatial heterodyne spectroscopy, in order to obtain high spectral resolution and higher spatial resolution at the same time. Compared with two-dimensional imaging spatial heterodyne spectroscopy, whose spec...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a field of view diaphragm adjustment structure and a field of view detection method for a one-dimensional imaging heterodyne spectrometer, so as to solve the problem that the working band of the one-dimensional imaging spatial heterodyne spectrometer in the prior art is invisible to the human eye, and the space dimension and spectrum The problem that the dimensional field diaphragm cannot be installed and inspected at the same time due to the misalignment of positions

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