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Diffraction spectrum light field computing and imaging system

A technology for computational imaging and diffraction spectroscopy, applied in the field of optical imaging, can solve problems such as increasing system complexity, limited application of spectrometers, and reducing system stability, and achieves the effect of solving inconsistent magnification, achieving miniaturization and easy folding

Active Publication Date: 2018-04-06
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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Problems solved by technology

[0004] In the application process of the diffractive optical imaging spectrometer, the distance between the diffractive optical lens and the detector needs to be changed to achieve the reception of different spectral bands, which increases the complexity of the system, reduces the stability of the system, and limits the application of the spectrometer

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  • Diffraction spectrum light field computing and imaging system
  • Diffraction spectrum light field computing and imaging system
  • Diffraction spectrum light field computing and imaging system

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Embodiment Construction

[0028] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention.

[0029] The present invention proposes a diffraction spectrum light field computational imaging system, such as figure 1 As shown, it includes a spectral dispersion module 1, a focusing imaging module 2, a light field sampling module 3, a detector module 4 and a spectral image reconstruction module 5;

[0030] After the light is input into the spectral dispersion module 1, axial spectral dispersion occurs in the spectral dispersion module 1 to form an axially dispersed light, and the axially dispersed light is output from the output ...

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Abstract

The invention discloses a diffraction spectrum light field computing and imaging system. The light is inputted to a spectral dispersion module and then the axial dispersion light is formed; a focusingand imaging module receives the axial dispersion light and compresses the dispersion range of the axial dispersion light by using a diffraction optical computing and recovering method so as to form the expected axial dispersion light; a light field sampling module modulates the expected axial dispersion light so as to form the modulated dispersion light; a detector module performs photoelectric conversion on the modulated dispersion light so as to obtain a blurred image; and a spectral image reconstruction module demodulates the blurred image so as to finally obtain the clear spectral image.The hardware complexity of the system can be reduced and the system has the advantage of low system data volume so that diffraction computing and spectral imaging are enabled to be more easily implemented.

Description

technical field [0001] The invention relates to optical imaging technology, in particular to a diffraction spectrum light field computational imaging system. Background technique [0002] The essence of spectral imaging technology is to make full use of the absorption or radiation characteristics of substances on different electromagnetic spectrums, and add one-dimensional spectral information on the basis of ordinary two-dimensional imaging. Due to the different composition of ground objects, there are differences between the spectra used for them, so that the spectra of ground objects can be used for identification and classification. Spectral imaging technology has a wide range of applications in military reconnaissance, water monitoring, mineral identification and plant ecology. [0003] The binary optical element is based on the diffraction principle of light, and uses computer technology to analyze the optical wavefront to design the diffraction coding profile, formin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/28G01J3/02
CPCG01J3/02G01J3/28G01J2003/283
Inventor 苏云刘彦丽焦建超
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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