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Polarization interference imaging spectrometer with wave plate adjustable

An interferometric imaging and spectrometer technology, applied in interferometric spectroscopy, spectrum investigation, etc., can solve the problems of lack of multi-channel advantages, high cost and high complexity, and achieve the effect of high contrast, simple structure and high resolution of interferogram

Inactive Publication Date: 2013-08-28
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0008] The imaging spectrometer (LCTF) and the acousto-optic modulation imaging spectrometer (AOTF) using the liquid crystal modulator realize single-band images, and the imaging band is limited by components such as liquid crystals. It is not a Fourier modulation method and does not have the advantage of multi-channel, and High complexity and high cost

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  • Polarization interference imaging spectrometer with wave plate adjustable
  • Polarization interference imaging spectrometer with wave plate adjustable
  • Polarization interference imaging spectrometer with wave plate adjustable

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Embodiment Construction

[0038] see figure 1 , the working principle of the present invention is: provide a specific optical path difference for the o light and e light incident on it, the optical path difference can be accurately adjusted from positive to negative, and its adjustment range can be adjusted according to the wavelength band and spectrum resolution design. The characteristic of the polarization phase shifting device is that the two linear polarization analyzers are parallel and form an angle of 45 degrees with the fast and slow axes of the wave plate. The characteristic of the polarization phase shifting device is that the optical path delay between the o light and the e light can be adjusted continuously or in steps.

[0039] The present invention provides an adjustable wave plate polarization interference imaging spectrometer, the adjustable wave plate polarization interference imaging spectrometer includes a first analyzer 1, a delay adjustment device, a second analyzer 3 and an opti...

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Abstract

The invention relates to a polarization interference imaging spectrometer with a wave plate adjustable. The polarization interference imaging spectrometer with the wave plate adjustable comprises a first polarization analyzer, a retardation adjusting device, a second polarization analyzer and an optical imaging detection system, wherein the first polarization analyzer, the retardation adjusting device and the second polarization analyzer are arranged on the same optical axis in sequence, and the optical imaging detection system and the second polarization analyzer are arranged on the same optical path. The polarization interference imaging spectrometer with the wave plate adjustable has the advantages of being simple in structure, large in size, large in weight and small in reduction amplitude.

Description

technical field [0001] The invention belongs to the field of optoelectronics and relates to an imaging spectrometer, in particular to an adjustable wave plate polarization interference imaging spectrometer. Background technique [0002] The three-dimensional or even four-dimensional spectral image data acquired by imaging spectroscopy is an important extension of traditional multispectral images. Its main ability is to provide fine spectrum and material identification capabilities. Its applications are expected to include: food safety, environmental monitoring, low-cost medical care, color identification, special item identification and other broad civilian fields. [0003] Imaging spectrometers have developed many forms since the 1980s, such as: dispersion type, filter type, Fourier transform type, tomographic type, etc., which can be described as various. The key to solving its map-spectrum integration acquisition ability is how to transform the spectral image data cube, ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/45
Inventor 马臻李英才李旭阳
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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