Hyperspectral imaging device based on polarization interference and imaging method thereof

A hyperspectral imaging and polarized light technology, applied in the field of spectral imaging, can solve the problems of high complexity and high manufacturing cost, reduce the difficulty of processing and assembly, and increase the stability of the system

Inactive Publication Date: 2017-01-04
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0004] The object of the present invention is to provide a hyperspectral imaging device based on polarization interference and its imaging method, which solves the

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  • Hyperspectral imaging device based on polarization interference and imaging method thereof
  • Hyperspectral imaging device based on polarization interference and imaging method thereof

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Embodiment 1

[0034] Combine figure 1 , A hyperspectral imaging device based on polarization interference, including front imaging objective 1, aperture 2, collimating objective 3, polarization beam splitter 4, λ / 2 wave plate 5, Savart plate 6, λ / 4 wave plate 7. The rear imaging objective lens 8 and the detector 9; the front imaging objective lens 1, the diaphragm 2, the collimating objective lens 3, the polarization beam splitter 4, the λ / 2 wave plate 5, the Savart plate 6, the λ / 4-wave plate 7, the optical axis where the above-mentioned components are located is the first optical axis; the common optical axis is sequentially arranged with the polarization beam splitter 4, the rear imaging objective lens 8 and the detector 9, and the optical axis where the above-mentioned components are located is the second optical axis; The optical axis is perpendicular to the second optical axis.

[0035] Combine figure 2 , The transverse shear beam splitter is composed of Savart plate 6 and λ / 4 wave pl...

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Abstract

The present invention discloses a hyperspectral imaging device based on polarization interference and an imaging method thereof. The hyperspectral imaging device based on polarization interference is characterized in that a prepositive imaging objective lens, a diaphragm, a collimation objective lens, a polarization beam splitter, a lambda/2 wave plate, an Savart plate and a lambda/4 wave plate are arranged orderly in a co-optical axis manner, and an optical axis in which the above elements are located is a first optical axis; a polarization splitting prism, a postpositive imaging objective lens and a detector are arranged orderly in the co-optical axis manner, and an optical axis in which the above elements are located is a second optical axis; the first optical axis and the second optical axis are vertical. A light beam transmitted or reflected by a target passes the device and generates a two-dimensional image containing the interference information, and a corresponding spectral image of the target can be obtained by utilizing a Fourier transform spectrum recovery method to process the two-dimensional image. According to the present invention, the Savart plate and the lambda/4 wave plate form a transverse shear beam splitter for the first time, so that an effective technical path can be provided for the hyperspectral imaging device which is stable in structure and low in complexity.

Description

Technical field [0001] The invention belongs to the technical field of spectral imaging, and relates to a hyperspectral imaging device based on polarization interference and an imaging method thereof. Background technique [0002] Interferometric hyperspectral imaging technology uses the physical relationship between the interference signal and the spectral signal, through the Fourier transform of the interference signal, and restores the spectral image information of the target. It is used in drug testing, agricultural production, environmental testing, chemical analysis, criminal investigation, etc. The field has important application value. [0003] The shear beam splitter is the core component of the hyperspectral imaging system, which determines the use characteristics of the instrument and many parameters. According to the different principles, the current typical representative of the interference type hyperspectral imaging technology is: the interference imaging spectrum ba...

Claims

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Application Information

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IPC IPC(8): G01J3/28
CPCG01J3/2823
Inventor 李建欣沈燕柏财勋王昊徐文辉
Owner NANJING UNIV OF SCI & TECH
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