Micro-polarization modulation array for achieving full-polarization imaging

A micro-polarization and full-polarization technology, which is applied in the field of micro-polarization modulation arrays, can solve problems affecting the accuracy of restored spectra and interference information aliasing, and achieve the effects of simple and practical methods, high target resolution, and simple structure

Active Publication Date: 2013-04-24
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

However, when detecting narrow-band target spectra, using multi-channel interference imaging spectroscopy technology, there may be serious aliasing between the interference information corresponding to each polarization state, which will affect the accuracy of the restored spectrum

Method used

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  • Micro-polarization modulation array for achieving full-polarization imaging
  • Micro-polarization modulation array for achieving full-polarization imaging
  • Micro-polarization modulation array for achieving full-polarization imaging

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] refer to figure 1 , the present invention is a micro-polarization modulation array for realizing full-polarization imaging, which is composed of a micro-phase retarder array 1 and a polarizer 2. The micro-phase retarder array 1 is composed of a first crystal grating 3 and a second crystal grating 4, which are fabricated on a birefringent uniaxial crystal by photolithography. The groove direction of the first crystal grating 3 and the second crystal grating 4 are perpendicular to each other and bonded back and forth, the second crystal grating 4 and the polarizer 2 are bonded back and forth, and the optical axis of the polarizer 2 is connected to the fast axis of the first crystal grating 3 parallel.

[0020] Referring to Fig. 2, the angle formed by the fast axis direction of the first crystal grating 3 and the direction of the groove and the counterc...

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Abstract

The invention discloses a micro-polarization modulation array for achieving full-polarization imaging. The micro-polarization modulation array for achieving the full-polarization imaging is composed of a micro-phase delayer array and a polarizing film, wherein the micro-phase delayer array is composed of a first crystal grating and a second crystal grating which are adhered, the directions of trunkings of the first crystal grating and the second crystal grating are mutually perpendicular, the second crystal grating is adhered with the polarizing film, and a through optical axis of the polarizing film and a fast axis of the first crystal grating are parallel. The micro-polarization modulation array for achieving the full-polarization imaging is used for an interference imaging spectrometer to lead in polarization information, easy and convenient to use, a polarization is not required, a theoretic aliasing phenomenon does not exist in interfering information which corresponds to polarization states, and spectral resolution and accuracy of restoring spectrums of an interference kind imaging spectrum polarization technique are improved.

Description

technical field [0001] The invention belongs to the field of optical detection target devices, and in particular relates to a micro-polarization modulation array for realizing full-polarization imaging, which can obtain full Stokes polarization information, spectrum information and two-dimensional image information of a target when applied to an interference imaging spectrometer. Background technique [0002] In the process of target detection, the surface state, physical and chemical properties of the target can be retrieved from the spectral and polarization information of the object, and even the background noise can be effectively eliminated to enhance the visibility of the object. Since the spectral and polarized radiation characteristics of the target have the advantage of clearly reflecting the characteristics of the target, the imaging detection technology that fuses spectral and polarization information can effectively use the complementarity of the two, and signific...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/02G01J3/447G01J3/45
Inventor 李建欣孟鑫刘德芳周伟郭仁慧沈华马骏朱日宏陈磊何勇
Owner NANJING UNIV OF SCI & TECH
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