Method for assembling convex grating imaging spectrometer
An imaging spectrometer and convex grating technology, applied in the field of spectroscopy, can solve the problems of difficult concentric installation, poor practicability, low concentric precision, etc., and achieve the effects of strong implementation, solving the problem of assembly method, and high precision of installation and adjustment.
Inactive Publication Date: 2011-08-03
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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[0003] The present invention provides an assembly method for a convex grating imaging spectrometer to solve the problems of difficult concentric assembly and adjustment of the existing convex grating concentric spectroscopic system, low concentric precision, and poor practicability
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specific Embodiment approach 1
[0015] Specific implementation mode 1. Combination Figure 1 to Figure 4 Describe this embodiment mode, an assembly method of a convex grating imaging spectrometer, the method is realized by the following steps:
[0016] Step 1, equipped with an interferometer 1 and a standard compensation mirror 10;
[0017] Step 2. Place the main mirror 2 and the third mirror 3 at the inspected mirror position of the interferometer 1 described in step 1, and adjust the positions of the main mirror 2 and the third mirror 3 by the defocus amount of the interference fringes;
[0018] Step 3: Place the mercury lamp 6 in front of the slit 5, insert the convex grating 4 between the main mirror 2 and the third mirror 3, place the reading microscope 7 at the image plane of the convex grating 4, adjust the convex grating 4, and the reading microscope 7 displays -1 order spectrum of mercury lamp 6;
[0019] Step 4, place the detector 8 in the position of the reading microscope 7 described in step 3,...
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The invention discloses a method for assembling a convex grating imaging spectrometer, and the method provided by the invention belongs to the field of optical instruments, and is used for solving the problems that the existing convex grating concentric beam-splitting system is difficult to install and adjust, so that the concentric accuracy of the system is low and the practical applicability of the system is poor. The method disclosed by the invention comprises the following steps: configuring an interferometer and a standard compensating mirror; arranging a primary mirror and a triangular mirror of a convex grating beam splitting system in front of the interferometer, adjusting the positions of the primary mirror and the triangular mirror, so that an interference fringe occurs to the interferometer; arranging a mercury lamp in front of a slit, arranging a grating between the primary mirror and the triangular mirror, arranging a reading microscope at the image surface of the convex grating beam splitting system, and then adjusting the grating, so that the reading microscope can read out the zero-level and minus-one-level spectrums of the mercury lamp; and arranging a detector and a telephoto lens, and then adjusting the detector and the telephoto lens, so that the detector can accept an ideal spectral image of a detected target. In the method disclosed by the invention, because the assembling of the grating and the detector are realized by using a spectrogram direct-reading method, the method is strong in practicability and high in accuracy.
Description
technical field [0001] The invention relates to the field of spectrum technology, in particular to an assembly method of a convex grating imaging spectrometer. Background technique [0002] Convex grating imaging spectrometer is a new type of analytical instrument that "integrates images and spectra". It consists of a front telescopic system and an off-axis triple-trans convex grating spectroscopic system based on the Offner concentric structure. All optical components of the Offner off-axis triple-trans concentric spectroscopic system are The surfaces are all reflective spheres and the centers of all spheres are the same point. The characteristics of the concentric system make the convex grating imaging spectrometer have the advantages of small spectral line bending and color distortion, no astigmatism, simple structure, and no moving parts. This cutting-edge technology is widely used in military reconnaissance, resource exploration, natural disaster monitoring, environment...
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IPC IPC(8): G01J3/28
Inventor 刘玉娟崔继承巴音贺希格唐玉国
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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