Small reflective off-axis telemetry calibration system for FTIR front end

A calibration system, reflective technology, used in measurement devices, color/spectral properties measurement, material analysis by optical means, etc., can solve problems such as low energy utilization

Active Publication Date: 2021-04-30
中船重工安谱(湖北)仪器有限公司
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  • Abstract
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Problems solved by technology

[0005] The present invention proposes a small reflective off-axis telemetry calibration system for the front end of FTIR, which can improve the problem of low

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  • Small reflective off-axis telemetry calibration system for FTIR front end
  • Small reflective off-axis telemetry calibration system for FTIR front end
  • Small reflective off-axis telemetry calibration system for FTIR front end

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Embodiment Construction

[0031] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0032] The optical path of the telemetry calibration system of the FTIR front end is as follows figure 1 shown. The system includes a window 1 , a first off-axis parabolic mirror 2 , a flat mirror 3 , a second off-axis parabolic mirror 4 , a third off-axis parabolic mirror 5 , a black body 6 and an FTIR spectrometer 7 .

[0033] The window 1, the first off-axis parabolic mirror 2, the plane mirror 3 and the second off-axis parabolic mirror 4 are sequentially combined into a telephoto optical path; the window 1 is installed in front of the first off-axis parabolic mirror 2 , the plane mirror 3 and the off-axis parabolic mirror 2 are located on the same optical axis, which is the first optical axis; the second off-axis parabolic mirror 4 and the plane mirror 3 are located on the same optical axis, which is the second optical axis; An optical axis is per...

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Abstract

The invention discloses a small reflective off-axis telemetry calibration system for an FTIR front end. The small reflective off-axis telemetry calibration system comprises a diaphragm, a first off-axis parabolic mirror, a plane mirror, a second off-axis parabolic mirror, a third off-axis parabolic mirror, a black body, an FTIR spectrometer, a vertical turntable bearing, a lens cone, a top cover and a horizontal turntable bearing. The off-axis reflection type telescopic light path is adopted, compared with a common cassette telescope for FTIR telemetry, aperture blocking does not exist, the energy utilization rate is higher, and the detection limit of passive telemetry can be effectively improved; spatial layout is adopted, only the telescope objective is required to rotate and pitch when the instrument is used for 360-degree horizontal and 60-degree pitch scanning, the scanning is flexible, and the speed is high; the FTIR spectrometer is kept still, and the measurement stability is better; the size and the weight are reduced, the shock resistance is improved, and the system is better applied to vehicle-mounted and airborne conditions; the telescopic optical path and the black body calibration optical path are carried out in a time-sharing manner, and the off-axis design is adopted, so that the energy utilization rate of passive remote measurement can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of optical trace detection, and in particular relates to a small reflective off-axis telemetry calibration system for an FTIR front end. Background technique [0002] Fourier Transform Infrared (FTIR) technology has been widely used in the monitoring of toxic and harmful gases and chemical warfare agents. It can be used for rapid and continuous online monitoring, as well as simultaneous monitoring of multi-component gases. It has gradually become a toxic and harmful gas in the atmospheric environment. and the main means of chemical warfare agent monitoring. Passive remote sensing technology utilizes the emission of the object to be measured or its absorption of sunlight or lunar light to qualitatively or quantitatively determine the components to be measured, so the technology has the advantages of mobility, flexibility, fast and easy operation. In FTIR passive remote sensing, the absolute radiation value o...

Claims

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Application Information

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IPC IPC(8): G01N21/35G01N21/3504
CPCG01N21/35G01N21/3504G01N2021/3595G01N2201/127
Inventor 尤兴志李文博隋峰余恒恒代胜英
Owner 中船重工安谱(湖北)仪器有限公司
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