Device and method for polarization difference multispectral imaging for real-time detection

Abstract

The present invention relates to a device and method for polarization difference multispectral imaging for real-time detection. The device comprises a front imaging system, a first double-refraction beam splitter prism, a double-refraction optical filtering module, a rear imaging object lens and an area-array detector which are arranged along the same optical axis in order. The double-refraction optical filtering module is formed by N sets of polarization elements, wherein N=1, 2, 3.... light beam emitted or reflected by a detection object passes through the front imaging system to enter the double-refraction beam splitter prism in the parallel light mode; the incident light bam passes through the first double-refraction beam splitter prism to be divided into two beams of orthogonal polarized lights to enter the double-refraction optical filtering module, the light beam is divided into two beams when passing through one set of the polarization elements in the double-refraction optical filtering module each time, and the two beams of light pass through different frequency spectrum filterings; and finally, the light can obtain two sets of multispectral images of the orthogonal polarized state on the area-array detector at the same time through passing through the rear imaging object lens, wherein each set comprises 2<N> number of the multispectral images. The method can obtain the polarization difference multispectral images of the detection object in real time.

Description

technical field [0001] The invention belongs to the technical field of optical imaging detection, in particular to a polarization difference multispectral imaging device and method for real-time detection. Background technique [0002] At present, optical detection technology is one of the important ways for human beings to obtain target information. Optical detection technology can analyze the physical and chemical properties of the detection target by detecting the image, spectrum, polarization and other information of the target, and provide high-contrast target surface, shape, shadow and other information, thereby significantly improving the ability to identify specific targets in complex background environments . The imaging spectral polarization technology developed from this has formed a cutting-edge optical imaging detection tool with multi-mode detection capabilities by fusing the functions of cameras, spectrometers and polarimeters, which can simultaneously provid...

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the problem that the existing differential polarization spectral imaging technology cannot detect dynamic target s

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