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Control device and method for single-photon compression spectral polarization imaging

A polarization imaging and control device technology, applied in the field of spectral imaging, can solve the problems of low synchronization accuracy, time-consuming, and difficulty in obtaining imaging results, and achieve the effects of flexible and adjustable parameters, high device integration, and high integration.

Inactive Publication Date: 2019-12-20
NANCHANG UNIV
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Problems solved by technology

However, the parameters of DMD, polarizer and spectrometer in the imaging system need to be adjusted separately for synchronization. The synchronization accuracy of the adjustment is not high and it is very time-consuming, and it is difficult to obtain good imaging results.

Method used

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  • Control device and method for single-photon compression spectral polarization imaging
  • Control device and method for single-photon compression spectral polarization imaging
  • Control device and method for single-photon compression spectral polarization imaging

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Embodiment Construction

[0038] Attached below Figure 1-5 The present invention will be described in detail with specific embodiments.

[0039] The invention provides a single-photon compression spectrum polarization imaging device, such as figure 1 As shown, the system device uses LED as the light source, uses extremely weak parallel light to irradiate the imaging target, and places the polarizer between the imaging target and the imaging lens L1, and the beam area of ​​the parallel light is larger than the plane area of ​​the imaging target. Polarizer and imaging lens L1 form a clear and complete image on DMDa. Set the lens in the +12°reflection direction of the DMDa micromirror, and then focus on the small hole through the lens L2, then use the lens L3 to collimate and parallelize it, and irradiate it on the blazed grating, forming a spectral line at the focal plane of the lens L4, and image it on the On the DMDb, the lens L5 is finally used to collect all the modulated total light intensity of ...

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Abstract

The invention relates to a control device and method for single-photon compression spectral polarization imaging. The control device for single-photon compression spectral polarization imaging comprises a synchronous control pulse generation module, a gated photon counting module, a first random measurement matrix loading module, a pulse stretching module, a first USB interface communication module, a second USB interface communication module, a random measurement matrix generating module, a second random measurement matrix loading module, and a deflection degree control loading module of a polarizer. The control device for single-photon compression spectral polarization imaging provided by the invention can flexibly set parameters such as the sampling frequency (that is, the DMD flip frequency), the number of measurement, and the number of repetition of the entire experiment as required. The high-precision synchronization control signal generated by the invention is simultaneously input to the random measurement matrix loading module and the photon counting module, so that DMD deflection and photon counting are synchronized with high precision, and single-photon compression spectral polarization imaging is realized.

Description

technical field [0001] The invention relates to the field of spectral imaging, in particular to a control device and method for single-photon compression spectral polarization imaging in the field of spectral imaging. Background technique [0002] Spectral imaging is a combination of imaging technology and spectral measurement technology. Due to its characteristics of detecting spatial and spectral information of objects, spectral imaging technology can not only obtain the geometric shape information of the imaging target, but also identify the target The difference of spectral characteristics forms three-dimensional data containing rich information of the target, and completes the accurate analysis of the spectral characteristics of the target. Spectral imaging technology is widely used in biological detection, material analysis, astronomical observation and remote sensing imaging, reconnaissance and detection, aerospace remote sensing and other fields. [0003] Polarizati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/28G01J3/447G01J3/02G01J11/00
CPCG01J3/027G01J3/2823G01J3/447G01J11/00
Inventor 鄢秋荣袁成龙王逸凡李冰
Owner NANCHANG UNIV
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