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Optical system for laser-induced detection

An optical system and laser-induced technology, applied in optics, optical components, material excitation analysis, etc., to achieve the effect of avoiding gas breakdown

Inactive Publication Date: 2013-01-09
ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a new optical introduction system in laser-induced detection technology, which is used to solve the problem of laser-induced adjustment in the implementation process of laser-induced plasma spectroscopy technology and laser-induced ultrasonic detection technology

Method used

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  • Optical system for laser-induced detection
  • Optical system for laser-induced detection
  • Optical system for laser-induced detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] refer to figure 1 , figure 2 and image 3 , to fabricate an optical system for laser-induced detection. The outer sleeve 1 is made of welded stainless steel, and the inside is a threaded structure, and the optical element is tightened and fixed by a metal ring containing external threads. Along the light passing sequence, the first optical element is the focusing lens group 8, and the second optical element is the beam splitter 2, which is used to disperse the incident laser light for induction into 4 beams. The structure is as follows Figure 5 . The third optical element is the spectroscopic shielding plate 3, which is made of an aluminum sheet with a thickness of 1 mm, and contains four light holes with a diameter of 3 mm, which are arranged in a circular array at an angle of 90°. The structure is as follows Image 6 , the light split by the dichroic prism 2 exits through the four light holes. The fourth optical element is the beam selection baffle 4, on which ...

Embodiment 2

[0032] refer to Figure 4 , to fabricate an optical system for laser-induced detection. The outer sleeve 1 is made of aluminum plate, the inside is a sliding sleeve structure, and each element has a sleeve outside. The positioning of the optics is achieved by tightening the screws. Along the light passing sequence, the first optical element is the beam splitter 2, which is used to disperse the incident laser light for induction into 8 beams, such as Figure 8 . The second optical element is the beam-splitting baffle 3, which is made of a steel sheet with a thickness of 0.5 mm and contains 8 light holes with a diameter of 5 mm. The light split by the beam-splitting prism 2 is emitted through the 8 light holes. The third optical element is the beam selection baffle 4, on which 20 holes are arranged in an array with equal angular intervals along a circle with a diameter of 50 mm. By rotating the beam selection baffle 4, 2, 4, 6, and 8 laser beams can pass through the beam Sel...

Embodiment 3

[0034] refer to Figure 4, to fabricate an optical system for laser-induced detection. The outer sleeve 1 is made of aluminum plate, the inside is a sliding sleeve structure, and each element has a sleeve outside. The positioning of the optics is achieved by tightening the screws. Along the light passing sequence, the first optical element is the beam splitter prism 2, which is used to disperse the incident laser light for induction into two layers, each layer has 8 beams, such as Figure 9 . The second optical element is the beam-splitting baffle plate 3, which is made of a steel sheet with a thickness of 1 mm. It contains two layers of 8 light holes with a diameter of 3 mm on each layer. The light split by the beam-splitting prism 2 passes through these 8 light holes. shoot out. The third optical element is the beam selection baffle 4, which is divided into two layers along a circle with a diameter of 50 mm at equal angular intervals, and 20 holes are arranged in an arra...

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Abstract

The invention belongs to the field of laser-induced detection, and relates to a laser lead-in optical system of a novel laser-induced detecting device, in particular to a laser lead-in optical system by which laser is gathered on the surface of a substance to be detected, ingredients of the substance to be detected are obtained through plasma spectroscopy triggered by the laser, or defects in the material are obtained by analysis through ultrasound stimulated in the substance and on the surface of the substance through the laser. The laser lead-in optical system comprises an outer sleeve, a beam splitter prism, a beam splitter baffle plate, a light beam selecting baffle plate and a light gathering sleeve, the light gathering sleeve can be replaced by a reflector group, or an electric controller or a focusing lens can be added. Induced adjustment and control are realized by a method of splitting laser beams, controlling the energy of a single laser beam to be lower than an induced stimulant threshold value, and controlling the energy of the laser beams to be higher than the stimulant threshold value when the laser beams are combined, and the problem that the laser is focused on the substance to be detected or gas breakdown is caused can be solved.

Description

technical field [0001] The present invention relates to a new type of laser induction optical system of a laser induction detection device, in particular to a method of converging laser light on the surface of a substance to be detected, and obtaining the composition of the material to be detected through the plasma spectrum excited by the laser, or through the laser light inside the material And the ultrasound excited by the surface is analyzed to obtain the laser introduction optical system of the internal defect of the material, which belongs to the field of laser induced detection. Background technique [0002] Laser-induced plasma spectroscopy (Laser Induced Plasma Spectroscopy, LIPS) detection technology is an analytical technique that uses pulsed laser ablation of substances to generate plasma, and qualitatively or quantitatively studies the composition of substances through plasma emission spectra. It has the advantages of wide application range, fast analysis speed,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/63G02B7/04
Inventor 赵天卓余锦樊仲维刘洋张雪黄科麻云凤
Owner ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
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