Single photon compression polarization imaging device and method

A polarization imaging, single-photon technology, applied in measurement devices, polarization spectroscopy, optical radiation measurement, etc., can solve the problems of insufficient polarization information and complicated operation, and achieve the effect of high integration, flexible operation and high sensitivity

Inactive Publication Date: 2019-07-23
NANCHANG UNIV
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Problems solved by technology

It uses a laser as a light source to output parallel polarized light and adds a polarizer in front of the photomultiplier tube to receive polarization signals. Each measurement can only obtain polarization information in one direction, and the polarization information is not rich enough. Its system does not use FPGA to monitor each part of the system. Module integration for control, the operation is more cumbersome

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  • Single photon compression polarization imaging device and method

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Embodiment Construction

[0056] The invention provides a single-photon compression polarization imaging device and method, such as figure 1 As shown, including imaging target 1, objective lens 2, rotating polarizer 3, rotating translation stage 4, digital micromirror device 5, focusing lens 6, single photon detector 7, FPGA-based control and synchronization counting module 8 and host computer 9 .

[0057] Imaging target 1, objective lens 2, rotating polarizer 3, digital micromirror device 5, focusing lens 6, single photon detector 7 such as figure 1 Place as shown;

[0058] The reflected light of the imaging target 1 is condensed onto the rotating polarizer 3 through the objective lens 2. The rotating polarizer 3 is placed on the rotating translation table 4, and the rotating translation table rotates a certain rotation angle to control the corresponding polarization angle of the rotating polarizer. The four different polarization angles are 0°, 45°, 90°, 135°, and the rotation angle of the rotary transl...

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Abstract

The invention relates to the field of weak light imaging and the field of polarized light imaging, in particular to a single photon compression polarization imaging device and method. The single photon compression polarization imaging device includes an imaging target, object lens, a rotating polarized film, a rotating translation stage, digital micro-mirror devices, focusing lens, a single photondetector, a controlling andsynchronous counting model base on FPGA and an upper computer. According to the single photon compression polarization imaging device, the controlling and synchronous counting model base on FPGA controls the digital micro-mirror devices turning and the rotating polarized film rotating to obtain photon counting values of four polarized angles based on compressed sensingso that image reconstruction and integration are conducted. Therefore, measuring costs and measuring times are reduced, and the luminous flux and the sensitivity of the single photon compression polarization imaging device are improved. At the same time, the single photon compression polarization imaging device has the advantages of high-integration level and being simple and convenient to operate.

Description

Technical field [0001] The invention relates to the field of weak light imaging and polarized optical imaging, in particular to a single-photon compression polarized imaging device and method. Background technique [0002] As a new type of detection technology, polarization imaging technology can not only detect the intensity information of the target, but also obtain imaging information from light intensity, spectrum, space, degree of polarization, polarization angle, polarization ellipticity, and rotation direction. At present, polarization imaging technology has been applied in the fields of optical remote sensing, atmospheric fog penetration, camouflage target detection and underwater target detection. The polarization imaging technology scheme is closely related to the polarization imaging classification. It is divided according to the same pixel polarization component acquisition method, including aperture (ApertureDivision) polarization imaging, amplitude division (Amplitu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/447G01J3/28G01J3/02G01J3/06
CPCG01J3/0205G01J3/0224G01J3/06G01J3/2823G01J3/447
Inventor 鄢秋荣方哲宇杨逸冰杨程王明
Owner NANCHANG UNIV
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