CN103837235B - A kind of Raman spectrometer detecting head and Raman spectroscopy system - Google Patents
A kind of Raman spectrometer detecting head and Raman spectroscopy system Download PDFInfo
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- CN103837235B CN103837235B CN201210475953.4A CN201210475953A CN103837235B CN 103837235 B CN103837235 B CN 103837235B CN 201210475953 A CN201210475953 A CN 201210475953A CN 103837235 B CN103837235 B CN 103837235B
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Abstract
The invention discloses a kind of Raman spectrometer detecting head, it comprises the probe assembling supporting member of spherical crown shape, described probe assembling supporting member is provided with top center through hole and plural side through hole, the equal junction of axis of described top center through hole and all sides through hole is located with the bottom center of probe assembling supporting member, and in top center through hole and side through hole, be respectively arranged with coupled lens group, in described coupled lens group, at least comprise one group of laser excitation coupled lens group and one group of Raman signal collection coupled lens group; Laser excitation coupled lens group is sequentially provided with collimation lens and condenser lens along the outer surface of probe assembling supporting member to the center of probe assembling supporting member, and Raman signal is collected coupled lens group and is sequentially provided with collimation lens and condenser lens along the outer surface of the middle mind-set probe assembling supporting member of probe assembling supporting member. The structure of Raman spectrometer detecting head of the present invention is not only closely, compact, volume is little, and its collect the efficiency of signal high, make the highly sensitive of Raman spectrometer.
Description
Technical field
The present invention relates to Raman spectrometer instrument, relate in particular to Raman spectrometer and excite the Raman spectrometer detecting head of collection and adopt the Raman spectroscopy system of this Raman spectrometer detecting head for Raman signal.
Background technology
The optical system of a Raman spectrometer comprises that beam splitting system and Raman signal excite gathering system, and Raman signal excites gathering system to be also called for short Raman probe. The effect of Raman probe in Raman spectrometer is gas barrier Rayleigh scattering light, collects the Raman scattering signal of sample to beam splitting system analysis.
Along with the miniaturization development of scientific and technological progress and spectral instrument, spectral detection is more and more applied to the every field that reality is produced and lived. Raman spectrum has reflected component and the molecular structure information of material, gains great popularity because it possesses uniqueness. Raman spectrum is from the transition of material molecule vibration level, and its intensity is 10 of photoluminescence spectrum intensity-6Doubly, detect suitable advantage for making Raman spectrum detect to have with fluorescence spectrum in sensitivity, the signal collection efficiency to Raman spectroscopy instrument and the raising of detection means are very large challenges. Spectral detection sensitivity is a very important standard weighing Raman spectrometer, and improves the efficiency of Raman probe collection signal, is a kind of effective method that improves its detection sensitivity. Therefore in the epoch of Raman spectrometer miniaturization, in order to ensure the detection sensitivity of Raman spectrometer, need raising Raman probe to collect the efficiency of Raman signal by every possible means.
Summary of the invention
In order to overcome the deficiencies in the prior art, the Raman spectrometer detecting head that collection rate is high, detection sensitivity is good that the object of this invention is to provide a kind of compact conformation, Raman signal and the Raman spectroscopy system that adopts this probe.
For achieving the above object, technical scheme of the present invention is: a kind of Raman spectrometer detecting head comprises the probe assembling supporting member of spherical crown shape, described probe assembling supporting member is provided with top center through hole and plural side through hole, the equal junction of axis of described top center through hole and all sides through hole is located with the bottom center of probe assembling supporting member, and in top center through hole and side through hole, be respectively arranged with coupled lens group, in described coupled lens group, at least comprise one group of laser excitation coupled lens group and one group of Raman signal collection coupled lens group; Laser excitation coupled lens group is sequentially provided with collimation lens and condenser lens along the outer surface of probe assembling supporting member to the center of probe assembling supporting member, and Raman signal is collected coupled lens group and is sequentially provided with collimation lens and condenser lens along the outer surface of the middle mind-set probe assembling supporting member of probe assembling supporting member.
The side through hole of described probe assembling supporting member is six.
The side through hole of probe assembling supporting member is about the distribution in a center of symmetry of top center through hole.
Between the collimation lens of described laser excitation coupled lens group and condenser lens, be sequentially provided with line optical filter and narrow-band pass filter.
Between the collimation lens of described Raman signal collection coupled lens group and condenser lens, be provided with long wave pass filter.
Adopt a kind of Raman spectroscopy system of above-mentioned Raman spectrometer detecting head, the input of described laser excitation coupled lens group is connected with the output of a laser instrument, the output that Raman signal is collected coupled lens group is connected with the entrance slit of Raman spectrometer, laser instrument by laser input optical fibre by Laser Transmission to laser excitation coupled lens group, behind the testing sample surface that laser is transferred to through laser excitation coupled lens group the place of bottom center that is positioned at probe assembling supporting member, being collected coupled lens group by Raman signal collects, Raman signal collection coupled lens group arrives Laser Transmission by signal output optical fibre separately the entrance slit of Raman spectrometer.
Adopt a kind of Raman spectroscopy system of above-mentioned Raman spectrometer detecting head, the input of described laser excitation coupled lens group is connected with the output of a laser instrument, the output that Raman signal is collected coupled lens group is connected with the input that is arranged on the signal transmission lens group outside probe assembling supporting member, the output of signal transmission lens group is connected with the entrance slit of Raman spectrometer, laser instrument by laser input optical fibre by Laser Transmission to laser excitation coupled lens group, behind the testing sample surface that laser is transferred to through laser excitation coupled lens group the place of bottom center that is positioned at probe assembling supporting member, being collected coupled lens group by Raman signal collects, Raman signal collection coupled lens group is transferred to laser the focal plane place of signal transmission lens group again by signal output optical fibre separately, laser arrives the entrance slit of Raman spectrometer after signal transmission lens group through connecting optical fibre transmission.
Adopt above structure, because laser excitation coupled lens group of the present invention and Raman signal are collected coupled lens group and are arranged in the probe assembling supporting member of spherical crown shape, and all laser excitation coupled lens groups and Raman signal collection coupled lens group all focus on the place of bottom center of probe assembling supporting member, that is to say testing sample place; The structure that has realized detecting head is not only closely, compact, volume is little, and its collect the efficiency of signal high, make the highly sensitive of Raman spectrometer. The structure of the transmission lens group of Raman spectroscopy system of the present invention is not subject to the restriction of operating distance yet.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is the structural representation of Raman spectrometer detecting head of the present invention;
Fig. 2 is the structural representation of a kind of Raman spectroscopy system of the present invention;
Fig. 3 is the structural representation of another kind of Raman spectroscopy system of the present invention;
Fig. 4 is that laser excitation coupled lens group and the Raman signal in Fig. 1 collected the distribution schematic diagram of coupled lens group;
Fig. 5 is that the Raman signal in Fig. 3 is collected the signal output optical fibre of coupled lens group at the distribution schematic diagram at the focal plane place of signal transmission lens group;
Fig. 6 is that connection optical fiber in Fig. 3 is at the distribution schematic diagram near transmission lens group end;
To be connection optical fiber in Fig. 3 becoming the distribution schematic diagram of vertical " one " font to Fig. 7 with the entrance slit end of Raman spectrometer.
Detailed description of the invention
As shown in one of Fig. 1-7, the present invention includes the probe assembling supporting member 1 of spherical crown shape, described probe assembling supporting member 1 is provided with top center through hole 11 and plural side through hole 12, the equal junction of axis of described top center through hole 11 and all sides through hole 12 is located with the bottom center of probe assembling supporting member 1, and in top center through hole 11 and side through hole 12, be respectively arranged with coupled lens group 2,3, in described coupled lens group 2,3, at least comprise one group of laser excitation coupled lens group 2 and one group of Raman signal collection coupled lens group 3; Laser excitation coupled lens group 2 is sequentially provided with collimation lens 4 and condenser lens 5 along the outer surface of probe assembling supporting member 1 to the center of probe assembling supporting member 1, and Raman signal is collected coupled lens group 3 and is sequentially provided with collimation lens 4 and condenser lens 5 along the outer surface of the middle mind-set probe assembling supporting member 1 of probe assembling supporting member 1.
The side through hole 12 of described probe assembling supporting member 1 is six.
The side through hole 12 of probe assembling supporting member 1 is about 11 distributions in a center of symmetry of top center through hole.
Between the collimation lens 4 of described laser excitation coupled lens group 2 and condenser lens 5, be sequentially provided with line optical filter 21 and narrow-band pass filter 22.
Between the collimation lens 4 of described Raman signal collection coupled lens group 3 and condenser lens 5, be provided with long wave pass filter 31.
Adopt a kind of Raman spectroscopy system of above-mentioned Raman spectrometer detecting head, the input of described laser excitation coupled lens group 2 is connected with the output of a laser instrument 6, the output that Raman signal is collected coupled lens group 3 is connected with the entrance slit of Raman spectrometer 7, laser instrument 6 by laser input optical fibre 61 by Laser Transmission to laser excitation coupled lens group 2, behind testing sample 8 surfaces that laser is transferred to through laser excitation coupled lens group 2 place of bottom center that is positioned at probe assembling supporting member 1, being collected coupled lens group 3 by Raman signal collects, Raman signal collection coupled lens group 3 arrives Laser Transmission by signal output optical fibre 32 separately the entrance slit of Raman spectrometer 7.
Adopt a kind of Raman spectroscopy system of above-mentioned Raman spectrometer detecting head, the input of described laser excitation coupled lens group 2 is connected with the output of a laser instrument 6, the output that Raman signal is collected coupled lens group 3 is connected with the input that is arranged on the signal transmission lens group 9 outside probe assembling supporting member 1, the output of signal transmission lens group 9 is connected with the entrance slit of Raman spectrometer 7, laser instrument 6 by laser input optical fibre 61 by Laser Transmission to laser excitation coupled lens group 2, behind testing sample 8 surfaces that laser is transferred to through laser excitation coupled lens group 2 place of bottom center that is positioned at probe assembling supporting member 1, being collected coupled lens group 3 by Raman signal collects, Raman signal collection coupled lens group 3 is transferred to laser the focal plane place of signal transmission lens group 9 again by signal output optical fibre 32 separately, laser is transferred to the entrance slit of Raman spectrometer 7 after signal transmission lens group 9 through connecting optical fiber 10.
Claims (7)
1. a Raman spectrometer detecting head, it is characterized in that: it comprises the probe assembling supporting member of spherical crown shape, described probe assembling supporting member is provided with top center through hole and plural side through hole, the axis of described top center through hole and all sides through hole all intersects at the place of bottom center of probe assembling supporting member, and in top center through hole and side through hole, be respectively arranged with coupled lens group, in described coupled lens group, at least comprise one group of laser excitation coupled lens group and one group of Raman signal collection coupled lens group; Laser excitation coupled lens group is sequentially provided with collimation lens and condenser lens along the outer surface of probe assembling supporting member to the center of probe assembling supporting member, and Raman signal is collected coupled lens group and is sequentially provided with collimation lens and condenser lens along the outer surface of the middle mind-set probe assembling supporting member of probe assembling supporting member.
2. a kind of Raman spectrometer detecting head according to claim 1, is characterized in that: the side through hole of described probe assembling supporting member is six.
3. a kind of Raman spectrometer detecting head according to claim 1, is characterized in that: the side through hole of probe assembling supporting member is about the distribution in a center of symmetry of top center through hole.
4. a kind of Raman spectrometer detecting head according to claim 1, is characterized in that: between the collimation lens of described laser excitation coupled lens group and condenser lens, be sequentially provided with line optical filter and narrow-band pass filter.
5. a kind of Raman spectrometer detecting head according to claim 1, is characterized in that: between the collimation lens of described Raman signal collection coupled lens group and condenser lens, be provided with long wave pass filter.
6. one kind adopts the Raman spectroscopy system of Raman spectrometer detecting head claimed in claim 1, it is characterized in that: the input of described laser excitation coupled lens group is connected with the output of a laser instrument, the output that Raman signal is collected coupled lens group is connected with the entrance slit of Raman spectrometer, laser instrument by laser input optical fibre by Laser Transmission to laser excitation coupled lens group, behind the testing sample surface that laser is transferred to through laser excitation coupled lens group the place of bottom center that is positioned at probe assembling supporting member, being collected coupled lens group by Raman signal collects, Raman signal collection coupled lens group arrives Laser Transmission by signal output optical fibre separately the entrance slit of Raman spectrometer.
7. one kind adopts the Raman spectroscopy system of Raman spectrometer detecting head claimed in claim 1, it is characterized in that: the input of described laser excitation coupled lens group is connected with the output of a laser instrument, the output that Raman signal is collected coupled lens group is connected with the input that is arranged on the signal transmission lens group outside probe assembling supporting member, the output of signal transmission lens group is connected with the entrance slit of Raman spectrometer, laser instrument by laser input optical fibre by Laser Transmission to laser excitation coupled lens group, behind the testing sample surface that laser is transferred to through laser excitation coupled lens group the place of bottom center that is positioned at probe assembling supporting member, being collected coupled lens group by Raman signal collects, Raman signal collection coupled lens group is transferred to laser the focal plane place of signal transmission lens group again by signal output optical fibre separately, laser arrives the entrance slit of Raman spectrometer after signal transmission lens group through connecting optical fibre transmission.
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| CN201210475953.4A CN103837235B (en) | 2012-11-21 | 2012-11-21 | A kind of Raman spectrometer detecting head and Raman spectroscopy system |
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| CN109856111A (en) * | 2017-11-30 | 2019-06-07 | 福州高意光学有限公司 | A kind of array structure Raman spectrometer |
| CN114732371B (en) | 2022-06-13 | 2022-08-19 | 南京诺源医疗器械有限公司 | Raman spectrum probe and Raman spectrum detection device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1645111A (en) * | 2005-01-13 | 2005-07-27 | 南京大学 | Low-temperature polarizing electronic Raman scattering apparatus |
| CN1842696A (en) * | 2003-06-27 | 2006-10-04 | 坎米马吉公司 | Wide field method for detecting pathogenic microorganisms |
| CN101903762A (en) * | 2007-12-21 | 2010-12-01 | 皇家飞利浦电子股份有限公司 | Fibre-optic probe |
| CN202057600U (en) * | 2011-05-23 | 2011-11-30 | 公安部第一研究所 | High-efficiency multimode laser-induced fluorescent light path exciting system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1842696A (en) * | 2003-06-27 | 2006-10-04 | 坎米马吉公司 | Wide field method for detecting pathogenic microorganisms |
| CN1645111A (en) * | 2005-01-13 | 2005-07-27 | 南京大学 | Low-temperature polarizing electronic Raman scattering apparatus |
| CN101903762A (en) * | 2007-12-21 | 2010-12-01 | 皇家飞利浦电子股份有限公司 | Fibre-optic probe |
| CN202057600U (en) * | 2011-05-23 | 2011-11-30 | 公安部第一研究所 | High-efficiency multimode laser-induced fluorescent light path exciting system |
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