Polarization interference imaging spectrum system and imaging method thereof

Abstract

The invention provides a polarization interference imaging spectrum system and an imaging method thereof. The imaging spectrum system comprises a micro-lens array, a collimating mirror, a first polarization array, a Savart polariscope group, a second polarization array, an imaging lens, a CCD detector, and a signal processing system. A target light source is incident into the micro-lens array and passes through the collimating mirror to produce parallel light and then passes through the first polarization array to produce linearly polarized light; the linearly polarized light beam is divided into two beams of linearly polarized parallel light by the Savart polariscope group; the two beams of linearly polarized parallel light pass through the second polarization array to produce linearly polarized light with the same polarization direction; finally, the linearly polarized light passes through the imaging lens and aggregates on the CCD detector to produce an interference pattern; the interference pattern formed in the CCD detector is input into the signal processing system to be processed to obtain a spectrogram with polarization information. The system has simple and stable structure, and does not have any mechanical moving parts or electric tuning members; by use of the system and method, two-dimensional space information, one-dimensional spectrum information and four-dimensional polarization information of an object are obtained at the same time, and multiple interference sub-images under a same linear polarization state are obtained.

Description

technical field [0001] The present invention is a polarization interference imaging spectrum system and its imaging method, especially a polarization interference imaging spectrum system and its imaging method based on a microlens array and a savart polarizer, belonging to the polarization interference based on a microlens array and a savart polarizer Innovative technologies for imaging spectroscopy systems and their imaging methods. Background technique [0002] Imaging spectroscopy technology and polarization technology are two important technical means in optical target detection. They respectively make in-depth judgments on target properties by sensing space, intensity, spectrum and polarization information, and invert the physical and chemical properties of the target to effectively eliminate the background. Noise, enhance the visibility of objects, and invert the target size, refractive index, concentration distribution and other information according to parameters suc...

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Problems solved by technology

However, these solutions have their own limitations. They have mechanical moving parts and electrical tuning devices, which is not conducive to the stability of the system, and cannot simultaneously obtain four-dimensional polarization information, two-dimensional spatial information and one-dimensional spectral information. not big enough

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