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A miniaturized spectral imaging system and imaging method

An imaging system and spectral imaging technology, applied in spectrum investigation and other directions, can solve problems such as reducing spatial resolution, and achieve the effects of high system integration, improved sensitivity and signal-to-noise ratio, and low power consumption

Active Publication Date: 2019-10-18
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a miniaturized spectral imaging system and imaging method to solve the problem of improving the signal-to-noise ratio and reducing the spatial resolution of the target in the existing CMOS hyperspectral imaging technology

Method used

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  • A miniaturized spectral imaging system and imaging method
  • A miniaturized spectral imaging system and imaging method
  • A miniaturized spectral imaging system and imaging method

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specific Embodiment approach 1

[0035] Specific implementation mode 1. Combination Figure 1 to Figure 3 Describe this embodiment, a miniaturized high-sensitivity high-resolution hyperspectral imaging system, including a lens 1 , a spectroscopic element 2 , and imaging system electronics 3 . The lens 1 collects the incident light and then focuses and projects it to the spectroscopic element 2. After passing through the spectroscopic element 2, the light is subdivided into the required n narrow bands. The imaging system electronics 3 receives the n spectral bands of light and converts them into electric signal.

[0036] The lens described in this embodiment can use conventional components, and the light splitting element can use filters, prisms, gratings, interference light splitting, etc., and both the lens and the light splitting element can use mature products. The imaging system electronics includes a focal plane module and an imaging processing unit, which are the key protection parts of this patent.

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specific Embodiment approach 2

[0039] Specific embodiment two, combine Figure 4 Describe this embodiment. This embodiment is an imaging method for a miniaturized, high-sensitivity, and high-resolution hyperspectral imaging system described in Embodiment 1. The imaging method is divided into two processes, namely the spectral position fast calibration mode and high Spectral imaging mode. The calibration mode is used to quickly calibrate the projection positions of n wavelength spectra on the focal plane of the sensor after the imaging system is assembled. After the calibration is completed, the imaging system can carry out formal hyperspectral imaging according to the calibration results. like Figure 4 shown.

[0040] The technical scheme adopted in the spectral position rapid calibration mode is as follows:

[0041] Step 1: Set the imaging mode to the spectral position quick calibration mode;

[0042] Step 2: The programmable logic device generates the sensor drive control timing in the calibration mo...

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Abstract

A miniaturized spectral imaging system and imaging method, related to the field of optoelectronic imaging technology, solves the problem that the existing CMOS hyperspectral imaging technology improves the signal-to-noise ratio while reducing the spatial resolution of the target, including lenses, spectroscopic elements and Imaging system electronics. The incident light is focused and projected to the spectroscopic element by the lens. After passing through the spectroscopic element, the light is divided into n narrow bands. The imaging system electronics receives the n spectral bands of light and converts them into electrical signals. The imaging method includes There are two processes of fast spectral position calibration and hyperspectral imaging; the calibration process is used to quickly calibrate the projection positions of n wavelength spectra on the focal plane of the sensor after the imaging system is assembled. After the calibration is completed, the imaging system performs hyperspectral imaging according to the calibration results; this The invention adopts a CMOS image sensor with the function of multi-opening windows in the row direction, which not only has low power consumption and low cost, but also has a high degree of system integration, thereby meeting the needs of the development of hyperspectral imaging towards light and miniaturization.

Description

technical field [0001] The invention relates to the technical field of photoelectric imaging, in particular to a miniaturized spectral imaging system and an imaging method. Background technique [0002] Spectral imaging technology can obtain the spectral information of the target while obtaining the two-dimensional spatial feature information of the target. Therefore, it has a broad application space and plays an important role in the fields of military reconnaissance, agricultural and forestry observation, environmental monitoring, disaster investigation, and geological exploration. . Among them, hyperspectral imaging systems play an important role in most fields of natural science and some fields of people's lives, such as crop yield estimation, soil quality assessment, water pollution detection, air pollution detection, etc. However, at present, most domestic hyperspectral imaging systems have the problems of large volume and weight, high power consumption, high cost, an...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/28
Inventor 陶淑苹张续严金光徐伟曲宏松吴勇
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI