Coded aperture spectral imaging system

A spectral imaging and coded aperture technology, applied in the field of spectral imaging, can solve problems such as low spatial resolution, achieve high spatial resolution, reduce time complexity, and improve spatial resolution.

Active Publication Date: 2016-06-15
SHENZHEN INST OF ADVANCED TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In view of this, an embodiment of the present invention provides a coded aperture spectral imaging system to solve the problem of low spatial resolution of the existing coded aperture snapshot spectral imaging system

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Embodiment Construction

[0016] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0017] In the embodiment of the present invention, the structure of the coded aperture spectral imaging system is as follows figure 1 As shown, it includes a front imaging system 11, a digital micromirror 12, a collimation system 13, a reflective grating 14, a microlens array 15 and a detector 16, wherein the digital micromirror 12 is made up of a series of small mirrors, each The small mirror ca...

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Abstract

The invention is suitable for the spectral imaging technical field, and provides a coded aperture spectral imaging system which comprises a preposition imaging system, a digital micro-mirror, a collimation system, a reflection raster, a microlens array and a detector. The microlens array comprises a plurality of microlenses; the filtering bands of the filtering layer on each microlens are different; the preposition imaging system images an object to be measured on the digital micro-mirror; the image after coded modulation is incident on the reflection raster through the collimation system to perform light splitting; a space spectrum mixing image is obtained after light splitting; a plurality of images are obtained through the microlens array with a filtering function; the detector simultaneously receives the plurality of images, and performs fusion decoding on the plurality of images to obtain the spectral information of the object to be measured. The coded aperture spectral imaging system can maintain system single rapid measurement, and meanwhile substantially improve system spatial resolution.

Description

technical field [0001] The invention belongs to the technical field of spectral imaging, in particular to a coded aperture spectral imaging system. Background technique [0002] Imaging spectroscopy technology is an organic combination of imaging technology and spectroscopy technology. It can obtain the spectral information formed by the dispersion of spatial pixels while detecting the spatial feature information of objects, and can perform qualitative, quantitative, and positioning detection. Common spectral imaging systems include filter type, grating type, interference type, etc., and generally obtain three-dimensional spectral image information by means of push-broom or swipe-sweep. The resolution is high, but the luminous flux is small, the acquisition time is long, and With moving parts, the stability requirements of the moving parts are also extremely high. Later, liquid crystal tunable filter and acousto-optic tunable imaging spectrometers appeared. There are no mov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/28G06T9/00
CPCG01J3/28G06T9/00
Inventor 马翠林慧张国栋杜如虚
Owner SHENZHEN INST OF ADVANCED TECH
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