Ultra-wide spectrum lensless polarization spectrum system

A polarization spectrum and lensless technology, applied in polarization spectrum, spectrum investigation, spectrum generation, etc., can solve the problems of difficult integration, large volume, high cost, etc., and achieve the effect of reducing cost and reducing volume

CN114705294APending Publication Date: 2022-07-05AEROSPACE INFORMATION RES INST CAS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-07-05

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Abstract

The invention discloses an ultra-wide spectrum lensless polarization spectrum system, the system comprises a substrate and microstructures distributed on the substrate, the shape of each microstructure is an asymmetric rectangle, and each microstructure forms a certain rotation angle on the substrate; after a distant plane wave light source penetrates through the substrate, electromagnetic wave regulation and control are carried out through different duty ratios and rotation angle changes of the microstructures, and control over spectral system parameters including the spectral range, the spectral resolution, the spatial resolution and the polarization characteristic is achieved through electromagnetic wave regulation and control; and calculating phase values required by different position coordinates of the substrate according to the focal length value and the phase function of the target, and matching according to the phase values to obtain parameters of the microstructure on the corresponding position coordinates so as to obtain the full-mode structure array. The system has the advantages of being ultra-light, ultra-thin, high in portability and the like, and strong focusing, large dispersion, variable spectral resolution and polarization characteristics can be integrated at the same time through a single element.
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Description

technical field

[0001] The invention relates to the technical field of polarization spectrum imaging, in particular to a lensless polarization spectrum system with an ultra-wide spectrum. Background technique

[0002] Spectral technology is different from traditional imaging technology. It is a photoelectric detection technology that integrates optics and spectroscopy. The acquired information includes not only two-dimensional spatial information, but also spectral radiation information distributed with wavelength. Spectroscopic technology is widely used in military and civil fields such as aerospace remote sensing, aerial reconnaissance, security monitoring, biomedicine, ecological monitoring, etc. With the advancement of science and technology, the portability and high performance requirements of optical systems are increasing. It has the characteristics of wide band, good imaging performance, light weight and small size. Although the traditional refraction system has good...

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Embodiment Construction

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. It does not constitute a limitation of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0021] like figure 1 Shown is a schematic structural diagram of an ultra-wide spectrum lensless polarization spectroscopy system provided by an embodiment of the present invention, the system includes a substrate 1 and a microstructure 2 distributed on the substrate 1, wherein:

[0022] The shape of the microstructures 2 is an asymmetrical rectangle, and each microstructure 2 has ...