Compression spectral imaging system based on random wavefront phase modulation

A technology of spectral imaging and phase modulation, which is applied in spectrum investigation and other directions, can solve the problems of reducing the number of detection units and detection time, achieving high energy utilization, reducing requirements, and reducing the amount of data collection

Active Publication Date: 2012-12-12
NANJING INST OF ADVANCED LASER TECH
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Problems solved by technology

[0012] The purpose of the present invention is to provide a compression spectral imaging system based on random wavefront phase modulation to solve the problem of reducing the number of detection units or reducing detection time

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  • Compression spectral imaging system based on random wavefront phase modulation
  • Compression spectral imaging system based on random wavefront phase modulation
  • Compression spectral imaging system based on random wavefront phase modulation

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the protection scope of the present invention should not be limited thereby.

[0040] see first figure 2 , figure 2 It is a structural block diagram of Embodiment 1 of the compressed spectrum imaging system of the present invention. As can be seen from the figure, the composition of the compressed spectrum imaging system in the embodiment of the present invention includes a front imaging objective lens 2, a random wavefront phase modulator 4, a photodetector 6 and a computer 7, and the front imaging objective lens 2 images the object plane 1 On the first imaging surface 3, a random wavefront phase modulator 4 and a photodetector 6 are arranged behind the first imaging surface 3, and the photodetector 6 is placed on the original detection surface 5, and the photodetector The output terminal of the device 6 is connected with the input terminal of th...

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Abstract

The invention discloses a compression spectral imaging system based on random wavefront phase modulation, comprising at least a front imaging objective, a random wavefront phase modulator, a photoelectric detector and a computer, wherein the front imaging objective images the object surface on a first imaging surface; the random wavefront phase modulator and photoelectric detector are arranged in the back of the first imaging surface; the output end of the photoelectric detector is connected with the input end of the computer. The compression spectral imaging system performs three-dimensional compression acquisition on the spectral image data according to the compressive sensing principle, so that the system drastically reduces the data acquisition quantity. The system can work in single multi-point measurement mode, multiple multi-point measurement mode or multiple single-point measurement mode; the arrangement shape can be selected randomly as the detection units does not need to be arranged tightly on the detection surface.

Description

technical field [0001] The invention relates to a compressed spectrum imaging system, in particular to a compressed spectrum imaging system based on random wavefront phase modulation. Background technique [0002] Spectral imaging is the process of acquiring two-dimensional spatial image information and one-dimensional spectral information of an object at the same time. It is a process of collecting three-dimensional data. The data form is as follows: figure 1 shown. It simultaneously realizes the functions of imaging and spectrum splitting. Since the existing detectors are two-dimensional, in traditional spectral imaging systems, time scanning is required to obtain three-dimensional spectral image data. Due to the large amount of spectral imaging data, reducing the number of detection units and reducing the scanning time is an urgent problem to be solved in the field of spectral imaging technology. [0003] Compressed sensing theory is a brand-new signal acquisition, enc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/28
Inventor 韩申生吴建荣沈夏
Owner NANJING INST OF ADVANCED LASER TECH
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