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Hyperspectral imager based on rotary filter monochromator

A technology of hyperspectral imaging and monochromator, applied in the field of optical instruments, can solve the problem of difficult to take into account spectral resolution, luminous flux, spectral measurement range, etc., and achieve the effect of large spectral measurement range, high spectral resolution, and high luminous flux

Pending Publication Date: 2016-08-17
SHANGHAI NEW IND OPTOELECTRONICS TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The current hyperspectral imager is difficult to take into account the characteristics of spectral resolution, luminous flux, and spectral measurement range at the same time

Method used

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  • Hyperspectral imager based on rotary filter monochromator
  • Hyperspectral imager based on rotary filter monochromator

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Embodiment Construction

[0015] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

[0016] see Figure 1-2 , a hyperspectral imager based on a rotating filter monochromator, including a front-end telescopic collimation system, a monochromator, a converging imaging system, a photoelectric receiving and processing system, and a display, the front-end telescopic collimation system Including the primary reflector 12 and the secondary reflector 13, the primary reflector 12 reflects and converges the light emitted by the target, and the converged light beam is incident on the surface of the secondary reflector 13, and then reflected by the secondary reflector 13 to form a small-caliber parallel light output An opening is arranged in the middle of the main reflector 12, allowing the parallel light output reflected by the secondary reflector 13, the size of the opening in the middle of the main reflector 12 is greater than the outgoing pa...

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Abstract

The invention discloses a hyperspectral imager based on a rotary filter monochromator. The hyperspectral imager comprises a front telescoping collimation system, the monochromator, a convergence imaging system, a photoelectric receiving and processing system and a display, wherein the front telescoping collimation system comprises a main reflector and an auxiliary reflector, the main reflector is a concave secondary rotating paraboloid mirror, and the auxiliary reflector is a convex secondary rotating paraboloid mirror; the convergence imaging system comprises a first lens group, a second lens group, a third lens group and a fourth lens group; the photoelectric receiving and processing system comprises a first CCD (charge coupled device) detector, a second CCD detector, a third CCD detector, a fourth CCD detector and a signal processor. The hyperspectral imager is based on the rotary filter principle and has the higher spectral resolution, higher luminous flux and larger spectral measurement range, and the spectral width of spectral images acquired by the imager is determined by the bandwidth of a rotary filter.

Description

technical field [0001] The invention relates to the technical field of optical instruments, in particular to a hyperspectral imager based on a rotary filter monochromator. Background technique [0002] Hyperspectral imager is an optical instrument used to collect and analyze the spectral and spatial two-dimensional information of objects. It is used in atmospheric environment detection, greenhouse gas analysis, air visibility measurement, chemical warfare agent detection, PM2.5 analysis and other fields . The monochromator is the core device of the hyperspectral imager, which is used to decompose the spectral information of the object in order to obtain the required information. Depending on the monochromator used, there are several types of hyperspectral imagers. [0003] The prism-grating-prism (PGP) type hyperspectral imager uses a combination of ordinary prisms and diffraction gratings to achieve spectroscopic purposes, which to a certain extent makes up for the bendin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/28G01J3/26
CPCG01J3/26G01J3/2823
Inventor 缪同群张声荣伍志军王志洲刘宝星
Owner SHANGHAI NEW IND OPTOELECTRONICS TECH