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Novel light splitting system of Raman temperature measuring laser radar

A spectroscopic system and Raman temperature measurement technology, applied in the field of spectroscopic systems, to achieve the effects of stable performance, compact structure and reduced system volume

Active Publication Date: 2016-11-09
宁夏朋众信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the Raman lidar is still not well realized in the spectroscopic system. On the one hand, it can extract the weak Raman spectral lines; -7 Requirements for suppression of orders of magnitude more

Method used

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  • Novel light splitting system of Raman temperature measuring laser radar
  • Novel light splitting system of Raman temperature measuring laser radar
  • Novel light splitting system of Raman temperature measuring laser radar

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Embodiment 1

[0030] Embodiment 1: as figure 2 As shown, the present embodiment provides a novel spectroscopic system 1 of a Raman temperature measuring lidar, and the spectroscopic system 1 combines the high and low quantum number Raman spectral lines used for temperature detection in the echo signal with the Mi-Ray The spectroscopic system 1 is also used to suppress the Mi-Rayleigh scattering signal and the interference of the solar background light to the greatest extent in the temperature detection channel.

[0031] It includes a first convex lens 11, and an optical processing circuit is arranged behind the first convex lens 11;

[0032] The optical processing circuit includes an optical filter 12, a light splitting and concentrating device, and a photodetector device connected in sequence;

[0033] The optical filter 12 is composed of a symmetrically arranged first optical filter part 121 and a second optical filter part 122, wherein the first optical filter part 121 and the second o...

Embodiment 2

[0041] Embodiment 2: as image 3 As shown, the difference between the spectroscopic system provided in this embodiment and that of Embodiment 1 is that in this embodiment, the spectroscopic and concentrating device includes a spectroscopic device, a third reflecting mirror 161, a fourth reflecting mirror 162, a first concentrating mirror 171 and second condenser lens 172;

[0042] In this embodiment, the spectroscopic device is composed of a first reflector 151 arranged clockwise at 45 degrees with the optical filter 12, and a second reflector 152 arranged at 45 degrees counterclockwise with the optical filter 12; the first reflector 151 reflects the laser light transmitted through the first optical filter part 121 vertically upward; at the same time, the second reflector 152 reflects the laser light transmitted through the second optical filter part 122 vertically downward; and the third reflector 161 and the first reflector 151 are arranged in parallel; the fourth reflector...

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Abstract

The invention relates to the field of laser radar devices, and particularly to a novel light splitting system of a Raman temperature measuring laser radar. The light splitting system comprises a first convex lens. A light processing circuit is arranged behind the first convex lens. The light processing circuit comprises an optical filter, a light splitting and focusing device and a photoelectric detecting device, wherein the optical filter, the light splitting and focusing device and the photoelectric detecting device are successively connected. The light splitting system is characterized in that the optical filter is composed of a first optical filtering part and a second optical filtering part which are symmetrically arranged, wherein the first optical filtering part and the second optical filtering part are respectively used for realizing penetration of laser with preset wavelengths; and after the light splitting and focusing device respectively splits laser which is transmitted from the first optical filtering part and the second optical filtering part into a first path of laser and a second path of laser, the first path of laser and the second path of laser are received by a first photoelectric detecting device and a second photoelectric detecting device. According to the light splitting system, through ingeniously arranging the structure of the optical filter, the optical filter is divided into two parts for simultaneously filtering light with different wavelengths, thereby realizing no requirement for the light splitting device in the system, simplifying optical path of the system and reducing system size.

Description

technical field [0001] The invention relates to the field of laser radar devices, in particular to a novel spectroscopic system of Raman temperature measuring laser radar. Background technique [0002] Lidar (Lidar: Light detection and ranging), as an active remote sensing detection tool, has been widely used in meteorological parameter detection, environmental monitoring and other fields. As a high-tech technology, the practicability and application prospects of lidar technology have attracted more and more attention. At present, the main methods of lidar to detect atmospheric temperature are: (1) Rayleigh scattering temperature measurement lidar, (2) vibration Raman temperature measurement lidar, (3) differential absorption temperature measurement radar, (4) Rayleigh scattering spectrum (5) Raman temperature measurement lidar based on the principle of Raman spectroscopy, etc. Among them, the principle of using Raman spectroscopy to detect temperature is mainly due to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/481G01S17/95G02B27/10
CPCG01S7/4816G01S17/95G02B27/1006Y02A90/10
Inventor 毛建东张白
Owner 宁夏朋众信息技术有限公司
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