Time-resolved extreme-low-light multispectral imaging system and method

A multi-spectral imaging and time-resolved technology, applied in the field of extremely weak light detection, can solve the problem of narrow response spectrum range

Active Publication Date: 2013-09-11
NAT SPACE SCI CENT CAS
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Problems solved by technology

Although the response spectrum range of the current single-photon detector covers infrared, visible light and other bands, for a single single-photon detector, its response spectrum range is very narrow, and it is generally used to detect light of a single frequency.

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  • Time-resolved extreme-low-light multispectral imaging system and method

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specific Embodiment approach

[0137] According to the above time-resolved extremely weak light multi-spectral imaging method, the specific embodiments of the present invention are as follows:

[0138] Such as figure 1 As shown, the extremely weak light source 1 emits the extremely weak light to trigger the trigger 2, and the drive control module 9 makes the subsequent devices start to work normally, and then every t time interval (this time interval can be extremely short, it is expected to reach picoseconds or even nanoseconds) level, in order to achieve time resolution) to conduct a centralized sampling, and each centralized sampling k times. In each time interval, the extremely weak light passes through the filter 3 to filter out the stray light and hits the continuously changing object (direct transmission is followed by transmitted light, oblique light is followed by reflected light), and then passed through the optical imaging system 4 Imaging on the DMD micromirror array 5, using DLP digital light ...

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Abstract

The invention provides a time-resolved extreme-low-light multispectral imaging system and method and belongs to the field of extreme-low-light multispectral imaging, wherein the system is triggered through a trigger to ensure the time-resolved property, and the multispectral high-resolution two-dimensional color imaging for extreme-low-light objects is realized by combining a triggering technology of the trigger, the compressive sensing theory, a DLP (digital light processing) technology, a spectrum-dividing technology, an optical fiber coupling technology and a photon counter linear array detection technology; the system is composed of an extreme-low-light light source or self-luminous organisms, the trigger, an optical filter, an optical imaging system, a DMD (digital mirror device) micromirror array, an optical focussing and collecting system, a spectrophotometer, a photo counter lineary array consisting of a plurality of photon counters with different wavelengths, a driving control module and an optimization algorithm module; the sensitivity of the system can reach the level of a photon, and can be widely applied to the fields of self-luminous organism detection, medical treatment imaging, data acquisition, communication, astronomy, military, hyperspectral imaging, measurement in quantum mechanics and the like.

Description

technical field [0001] The invention relates to the technical field of extremely weak light detection, in particular to a time-resolved extremely weak light multispectral imaging system and method. Background technique [0002] Multispectral imaging is an important technology to obtain and display accurate color information. One of the reasons is that multispectral images contain more spectral information. The second reason is that multispectral imaging technology overcomes metamerism well. The multi-spectral imaging of extremely low-light objects has broad application prospects in various fields. [0003] The present invention is based on the improvement and innovation of predecessors' work. In this field, our institute already has a patent "A Very Weak Light Multispectral Imaging Method and System" (application number or patent number: 201110166471.6, applicant or patentee: Center for Space Science and Applied Research, Chinese Academy of Sciences) , the patent is the wo...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/28
Inventor 俞文凯翟光杰王超
Owner NAT SPACE SCI CENT CAS
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