Static interference imaging polarizer and method for acquiring polarization information of target

A technology of static interference and polarization information, applied in the field of optics, can solve problems such as too many components, inability to obtain image information, inability to obtain polarization information, etc., achieve the effect of simple and compact structure, high spectral resolution, and promote rapid promotion and development

Active Publication Date: 2014-04-23
XI AN JIAOTONG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

This method without mechanical rotation is mainly suitable for pulsed light source or transient polarization state measurement, but the system has too many components and complex and not compact structure, which is very unfavorable for applications in aerospace, aviation and remote sensing detection
[0005] K.Oka once proposed a channel spectrum detection method, which has the ability to detect spectrum and polarization information in real time, but cannot obtain image information
Our research group once proposed a self-developed new type of polarization interference imaging spectrometer based on Savart polarizer, which can obtain the spectral and image information of the target at the same time, but cannot obtain the polarization information.

Method used

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  • Static interference imaging polarizer and method for acquiring polarization information of target
  • Static interference imaging polarizer and method for acquiring polarization information of target
  • Static interference imaging polarizer and method for acquiring polarization information of target

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Embodiment Construction

[0030] According to the static interference imaging polarimeter of the present invention, it includes a pre-telescope system 1, a modulation retarder 2, a polarization interferometer 3, an optical collection lens 4, an area array detector 5 and a computer processing system arranged in sequence along the incident light direction 6. The modulation delayer 2 is composed of a first delayer 21 and a second delayer 22 . The polarization interferometer 3 is composed of a polarizer 31 , a Savart polarizer 32 and an analyzer 33 . The incident light emitted by the target enters the modulation retarder 2 after being collimated by the pre-telescope system 1, and becomes the outgoing light loaded with modulation information after passing through the modulation retarder 2, and then passes through the polarization interferometer 3 to become two Linearly polarized light whose beam vibration is parallel and whose propagation direction is parallel to the direction of incident light, the linear...

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Abstract

The invention relates to a static interference imaging polarizer which comprises a front telescope system, a modulation delayer, a polarized interferometer, an optical collecting lens, a planar array detector and a computer processing system which are arranged in the direction of incident light in sequence, wherein the modulation delayer consists of a first delayer and a second delayer, and the polarized interferometer consists of a polarizer, a Savart polariscope and an analyzer. The static interference imaging polarizer has the advantage of detecting imaging information, spectral information and polarization information at the same time.

Description

technical field [0001] The invention belongs to the field of optics, and relates to a structure of a static interference imaging polarimeter and a method for obtaining polarization information of a target by using the static interference imaging polarimeter. Background technique [0002] In recent decades, with the rapid development of information science and space remote sensing technology, a new method of multi-faceted detection of targets using polarization technology has emerged. Light wave is a kind of transverse electromagnetic wave, its electric vector is perpendicular to the propagation direction of light, and the asymmetry of the electric field vibration direction relative to the light propagation direction is called polarization. When light waves are reflected, scattered, transmitted and absorbed in a medium or on an interface, the outgoing light will show characteristic polarization determined by the nature of the target itself, and different objects or different ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J4/00G01J3/447G01J3/45
Inventor 张淳民吴海英祝莹莹朱化春
Owner XI AN JIAOTONG UNIV
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