Spectral imaging system based on forearm compensation and plane grating
A plane grating and spectral imaging technology, applied in the field of spectral imaging systems, can solve the problems of difficult processing and adjustment, complex optical paths, poor imaging quality, etc., to achieve high resolution requirements, reduce system weight, and achieve off-axis aberrations Effect
Active Publication Date: 2021-03-23
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology
[0005] The present invention aims to solve the problems of poor imaging quality, complex optical path and difficult processing and assembly existing in the existing Dyson concave grating spectrometer
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[0034] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention and the accompanying drawings. Apparently, the described embodiments do not limit the present invention.
[0035] Such as figure 1 As shown, the spectral imaging system based on forearm compensation and plane grating in this embodiment includes slit 1, forearm compensation lens group 2, folding mirror 5, optical path multiplexing lens group 3 and plane raster4;
[0036] The forearm compensation lens group 2, the optical path multiplexing lens group 3 and the plane grating 4 are all arranged on the same optical axis, the slit 1 is arranged on one side of the optical axis of the system, and the folding mirror 5 is arranged on the other side of the optical axis of the system One side is provided, and a detector 6 is also provided on the side away from the system optical axis of the folding mirror 5;
[0037] The slit...
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The invention relates to a spectral imaging system, in particular to a spectral imaging system based on forearm compensation and a plane grating to solve the problems that an existing Dyson concave grating spectrometer is poor in imaging quality, complex in optical path and large in machining and adjusting difficulty. According to the technical scheme, the spectral imaging system based on forearmcompensation and a plane grating comprises a slit, a forearm compensation lens group, a folding reflector, an optical path multiplexing lens group and a plane grating which are sequentially arranged in the direction of the optical axis of the system. The forearm compensation lens group, the optical path multiplexing lens group and the plane grating are arranged in a manner of sharing the same optical axis, the slit is arranged towards one side of the optical axis of the system, the folding reflector is arranged towards the other side of the optical axis of the system, and a detector is furtherarranged on the side, far away from the optical axis of the system, of the folding reflector.
Description
technical field [0001] The invention relates to a spectral imaging system, in particular to a spectral imaging system based on forearm compensation and a plane grating. Background technique [0002] The spectral imager is a new type of remote sensing instrument that "integrates spectrum and image". It has the characteristics of high spectral resolution, large number of spectral bands, and continuous output in the working band range. It organically combines the traditional two-dimensional imaging remote sensing technology and spectral technology. While using the imaging system to obtain the spatial information of the scene, the spectrometer system decomposes the spectral radiation of the scene into many adjacent or even overlapping narrow areas. Radiation in spectral bands can obtain dozens or even hundreds of narrow continuous band information of each scene pixel within a certain spectral range. In this way, not only ground scene images with multiple narrow spectral bands ...
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Login to View More IPC IPC(8): G01J3/28G01J3/02
CPCG01J3/0208G01J3/2823
Inventor 李西杰畅晨光杨佳婷武俊强郝雄波李勇冯玉涛
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI