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Color filter tuning type window scanning optical spectrum imaging system and method

A spectral imaging and optical filter technology, applied in its window scanning mode (window scanning mode field), to achieve the effect of flexible band selection, high spectral resolution, and flexible and adjustable spectral channels

Inactive Publication Date: 2009-08-12
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0008] The purpose of the present invention is to solve the problem of simultaneous realization of high spectral resolution, high multi-band number, flexible band selection, high luminous flux and window-scan spectral imaging, and proposes a filter-tunable window-scan spectral imaging system and method

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  • Color filter tuning type window scanning optical spectrum imaging system and method
  • Color filter tuning type window scanning optical spectrum imaging system and method
  • Color filter tuning type window scanning optical spectrum imaging system and method

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Embodiment

[0059] According to specific design needs, the system structure of the present invention has three kinds of implementation schemes to choose from, as Figure 8 As shown, where (a) is the pre-tunable filter structure, the tunable filter pre-structure refers to placing the tunable filter at the front of the entrance pupil of the imaging optical system. (b) is the middle structure of the tunable optical filter, and the tunable optical filter is placed near the aperture in the imaging optical system; (c) is the rear structure of the tunable optical filter, and the tunable optical filter is placed in the imaging optical system The rear end of the exit pupil of the system, and the front end of the focal plane detector; when the space in the imaging optical system is insufficient to facilitate the insertion of a tunable filter filter system, the solution (a) can be used.

[0060] The imaging principle of the tunable filter pre-structure is as follows, such as figure 1 As shown, the...

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Abstract

The invention relates to a tuning window-scanning spectral imaging system for a light filter and a tuning window-scanning spectral imaging method for the light filter, and belongs to the field of spectral imaging. The invention is to add a scanning system into a tuning static spectral imaging system for the light filter to make the tuning window-scanning spectral imaging system capable of performing dynamic window-scanning imaging. Moreover, the invention adopts a data acquisition processing system which is matched with the scanning system to make the tuning window-scanning spectral imaging system be capable of completing data processing in the mode of window scanning and output correct spectral cubical result. The invention has high utilization rate of light energy, high spectral resolution and flexible and adjustable service band of spectrums, has both the image signal-to-noise ratio and the spectrum signal-to-noise ratio easy to reach high level, can only be operated in interested wavebands, reduces the data quantity, increases the regulating range of the integral time, can improve the detection level of weak signals, and is suitable to be widely applied in the fields of agricultural production, resource exploration, environmental monitoring, disaster prevention and reduction, substance identification, public safety and the like.

Description

technical field [0001] The present invention relates to a filter-tuned window-sweep spectral imaging system and method, in particular to its window-sweep working mode (window-sweeping working mode refers to continuous two-dimensional imaging under the condition that the target and the instrument have one-dimensional relative motion. .Because the two-dimensional imaging area is like a window, it is customary to call it a window scan), which belongs to the field of spectral imaging. Background technique [0002] Imaging spectrometer is an organic combination of imaging technology and spectroscopic technology. Its optical system is generally composed of imaging optical system and spectrometer system. The spectroscopic technology adopted by the spectrometer system directly affects the performance, structure complexity, weight and volume of the entire imaging spectrometer. . The spectral spectroscopic methods of imaging spectrometers mainly include filter type, prism, grating di...

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Application Information

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IPC IPC(8): G01J3/12G01J3/28
Inventor 廖宁放崔德琪赵达尊吴文敏楚建军田立勋谭博能曹玮亮
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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