A Multi-Wavelength Correlation Imaging System Based on Digital Micromirror Device
A digital micromirror device and associated imaging technology, which is applied in radio wave measurement systems, instruments, electromagnetic wave re-radiation, etc., can solve the problem of low generation efficiency of quantum entanglement light source or thermal light source, difficulty in adapting to long-distance imaging application environment, and limitations Correlation imaging system application and other issues, achieve high laser damage threshold, high measurement sensitivity and measurement rate, and prevent spectral aliasing
Active Publication Date: 2021-04-20
BEIJING HUAHANG RADIO MEASUREMENT & RES INST
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Problems solved by technology
[0003] The current correlative imaging system has the following problems: the quantum entanglement light source or thermal light source is not high in efficiency and low in brightness, and it is difficult to adapt to the long-distance imaging application environment; the acquisition of target information is single, which is not conducive to target recognition; the image reconstruction algorithm based on coincidence measurement The calculation speed is slow and the reconstruction quality is poor. Compared with the traditional imaging system in the conventional imaging scene, the advantages are not obvious, which limits the practical application of the correlation imaging system.
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[0024]DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0025]Such asfigure 1 As shown, a multi-wavelength associative imaging system based on digital microscope devices, including lasers, digital microscope devices, emission optical systems, receiving optical systems, dispersion prisms, line array detectors, computers; lasers output ultra-widebands (the ultra-broadband " The wavelength range is 380 nm-2um) laser pulses, incident on the digital microscope device; the digital microscope device receives the modulated signal output by the computer, and converts the laser pulse modulation into 光光; 光光 光光 光 光 系统 扩, Shaped, irradiated onto the target object, the target echo signal is gadily sampled by the receiving optical system, dispersion is dispersed by dispersion prism, and then irradiated into the line array detector into an electrical signal. According to the modulation signal of the electrical signal and the computer, the target object spectrum image letter information and distance ...
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The invention discloses a multi-wavelength correlated imaging system based on a digital micromirror device, comprising a laser, a digital micromirror device, an emission optical system, a receiving optical system, a dispersion prism, a linear array detector, and a computer; , incident on the digital micro-mirror device; the digital micro-mirror device receives the modulation signal output by the computer, and converts the ultra-broadband laser pulse modulation into a pseudo-thermo-optic pulse; On the object, the target echo signal is condensed and downsampled by the receiving optical system, dispersed by the dispersive prism, and then irradiated to the linear array detector and converted into an electrical signal. The invention utilizes the digital micromirror device to modulate the ultra-wideband narrow pulse laser to generate pseudothermal light to realize the correlation imaging, and can obtain the spectral image information and distance information of the target object only through the linear array detector.
Description
Technical field[0001]The present invention relates to the field of photoelectric imaging, and more particularly to a multi-wavelength associated imaging system based on digital micromirror devices.Background technique[0002]The associated imaging system according to the present invention is a new instance imaging system that illuminates the target spatial distribution information using quantum entangled light sources, a thermal source or a heated light source to acquire the target space distribution information. The system uses a quantum entangled light source, a hot light source or a kettle light source to generate a beam having a time and space association characteristic, which is divided into two bundles, and a bundle is in the imaging system monitored by the visa detector, and the other is transmitted. To the target; the target reflected light signal is performed by receiving the optical system, the electrical signal output from the point detector, and the optical field distribut...
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IPC IPC(8): G01S17/48G01S17/894
CPCG01S17/48G01S17/89
Inventor 马菁汀刘尊龙冯飞许江盟唐倩
Owner BEIJING HUAHANG RADIO MEASUREMENT & RES INST