CN102621123A - Focusing device of handheld Raman spectrometer - Google Patents

Focusing device of handheld Raman spectrometer Download PDF

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Publication number
CN102621123A
CN102621123A CN 201210079375 CN201210079375A CN102621123A CN 102621123 A CN102621123 A CN 102621123A CN 201210079375 CN201210079375 CN 201210079375 CN 201210079375 A CN201210079375 A CN 201210079375A CN 102621123 A CN102621123 A CN 102621123A
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CN
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lens
raman spectrometer
barrel
lens holder
sample
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CN 201210079375
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Chinese (zh)
Inventor
乔晓林
侯林
姜杰
廉斌
张恒南
张静
杨滨华
谷祖海
邵春涛
陈培生
隋时秀
高静
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哈尔滨工业大学(威海)
威海威高电子工程有限公司
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Abstract

The invention relates to a focusing device of a handheld Raman spectrometer, which comprises a lens support and a collecting lens. The lens support is mounted at the front end of a main body of the handheld Raman spectrometer, the collecting lens is fixedly mounted in the lens support, the lens support is a circular sleeve, a lens barrel is movably mounted at the front of the collecting lens in the circular sleeve, a sample to be tested is tightly attached to the outer end surface of the lens barrel, and the distance from the sample to be tested to the collecting lens is adjusted by means of moving the lens barrel. The focusing device of the handheld Raman spectrometer is simple in structure and reasonable in constitution, and the relative distance from the sample to be tested to the collecting lens of the Raman spectrometer can be flexibly adjusted. The device can be applied to the handheld Raman spectrometer, Raman scattering light is assuredly collected by the Raman spectrometer to the greatest extent, the optimal positions of samples can be flexibly and quickly found out according to different samples, and the samples to be tested are accurately positioned.

Description

手持式拉曼光谱仪调焦装置 Handheld Raman spectrometer focusing device

技术领域 FIELD

[0001] 本发明属于光学机械领域,具体涉及一种手持式拉曼光谱仪调焦装置。 [0001] The present invention belongs to the field of optical machinery, in particular to a handheld Raman spectrometer focusing device.

背景技术 Background technique

[0002] 手持式拉曼光谱仪具有体积小、检测方式灵活、适于现场检测等优点,在制药、食品安全、爆炸物监测等领域得到广泛的应用。 [0002] Handheld Raman spectrometer with a small, flexible detection for field detection, etc., are widely used in the pharmaceutical, food safety, monitoring and other fields of explosives. 手持式拉曼光谱仪一般由激光源、外光路系统、分光仪、探测器和计算机处理系统构成,其中外光路系统中的收集透镜(物镜)将光源光束会聚后准确入射到待测样品处,并收集待测样品受到激光束激发产生的拉曼散射光。 Handheld Raman spectrometer generally consists of a laser source, external light path system, spectrometer, detector and computer processing system configuration in which external light path system of collection lens (objective) after converging accurate incident light beam to be measured at the sample, and test sample collected by the Raman scattering light generated by excitation of the laser beam. 当仪器光路系统固定后,激光光束聚焦位置固定,但在检测时,不同材料的样品对激光束聚焦于其内部深度的要求不同,只有当激光束聚焦于待测样品内部某特定的位置时,拉曼光谱仪才能更有效地收集拉曼散射光,待测样品位置的轻微变动都会对散射光的采集效率产生很大影响,因此,在实际检测时需要灵活调节待测样品与仪器前端物镜之间的相对距离,以确定检测时样品放置的最佳位置。 When the instrument fixed optical system, the laser beam focus position is fixed, but in the detection, samples of different materials for different internal focusing a laser beam thereon the desired depth, only when the laser beam is focused on a specific position inside the sample to be tested when, Raman spectrometer can more efficiently collect the Raman scattered light, a slight change in the position of test sample will have a significant impact on the collection efficiency of the scattered light, therefore, need to be flexible in the actual detection of the test sample between the instrument and the distal end an objective lens relative distance to determine the optimal position of the test sample is placed. 手持式拉曼光谱仪在使用方面的灵活性特点,要求其在检测过程中有一种能够对不同样品进行灵活定位的装置,然而,目前市售的各种手持式拉曼光谱仪都无法提供实现该功能的装置,而直接将待测样品紧贴于仪器镜筒前端进行检测,这样可能会导致由于对样品定位不准确而采集到的拉曼光谱强度较弱甚至采集不到光谱等现象出现,降低了手持式拉曼光谱仪的分析性能。 Handheld Raman spectrometer flexibility in the use of features, which requires to have a flexible positioning apparatus capable of different samples in the detection process, however, the various currently commercially available handheld Raman spectrometer are unable to provide this feature to achieve the apparatus and sample to be tested directly against the front end of the instrument barrel is detected, since this may result in inaccurate positioning of the sample and the collected Raman spectra collected even weaker intensity than spectrum and other phenomena, reduced hand-held analytical performance Raman spectrometer.

发明内容 SUMMARY

[0003] 本发明所要解决的技术问题是克服上述现有技术的不足,提供一种结构简单,组成合理,能够灵活调节待测样品与拉曼光谱仪收集透镜之间的相对距离,确保拉曼光谱仪最大程度地收集拉曼散射光,实现对待测样品进行准确定位的手持式拉曼光谱仪调焦装置。 [0003] The present invention solves the technical problem to overcome the deficiencies of the prior art, provide a simple, rational composition can be flexibly adjusted relative distance between the test sample and the collection lens Raman spectrometer, a Raman spectrometer to ensure maximize the Raman scattered light collected, treated test sample to achieve a handheld Raman spectrometer focusing device accurately positioned.

[0004] 本发明解决上述技术问题采用的技术方案是:一种手持式拉曼光谱仪调焦装置,其包括透镜支架、收集透镜,所述透镜支架安装于手持式拉曼光谱仪主体前端,收集透镜固定安装在透镜支架内,其特征是:所述透镜支架为圆形套筒,圆形套筒内收集透镜的前方可移动安装一镜筒,镜筒外端面紧贴待测样品,通过移动镜筒,调节待测样品与收集透镜之间的距离。 [0004] The technical solution to the above technical problem of the present invention is employed: a handheld Raman spectrometer focusing apparatus including a lens holder, collection lens, said lens holder is attached to the front end of the body handheld Raman spectrometer, collection lens fixedly mounted in the lens holder, characterized in that: said lens holder sleeve is circular, circular collecting lens sleeve movably mounted in front of a lens barrel, an outer end surface of the barrel close to the test sample, by moving the mirror cylinder, adjusting the distance between the test sample and the collection lens.

[0005] 本发明所述透镜支架设有内螺纹,镜筒设有外螺纹,镜筒与透镜支架螺纹配合,转动镜筒,其可在透镜支架内沿光源光束方向前后移动。 Mobile [0005] The present invention before and after the lens holder is provided with an internal thread, an external thread is provided with the lens barrel, the lens barrel and the lens holder threaded engagement, rotation of the barrel, which may be the source light beam in the direction of the lens holder.

[0006] 本发明所述透镜支架内下侧轴向设有导向螺杆,镜筒下侧轴向设有与所述导向螺杆配合的螺纹导槽,转动导向螺杆,可带动镜筒在透镜支架内沿光源光束方向前后移动。 [0006] a lower side of the lens axially within the stent of the present invention is provided with a lead screw, axial side of the guide is provided with screw thread guide groove the barrel, rotation of the lead screw, the barrel may be driven in the lens holder move back and forth direction of the light beam.

[0007] 本发明在透镜支架圆形套筒内装有一可移动的镜筒,待测样品紧贴于镜筒外端面,位于垂直于光源光束方向的位置,通过移动镜筒,可带动待测样品在光源光束方向灵活移动,调节待测样品与收集透镜之间的距离,实现对手持式拉曼光谱仪的调焦。 [0007] The present invention is built in the lens holder has a circular sleeve a movable lens barrel, the sample close to the outer end surface of the barrel, located at a position perpendicular to the direction of the light beam, by moving the barrel, can drive the sample to be tested flexible light source is moved in the direction of the beam, adjusting the distance between the test sample and the collection lens to achieve focusing of the handheld Raman spectrometer. 对照现有技术,本发明结构简单,组成合理,能够灵活调节待测样品与拉曼光谱仪收集透镜之间的相对、距离。 Control prior art, the present invention has simple structure, composition and reasonable, the flexibility to adjust the relative distance between the test sample and the collection lens Raman spectrometer. 该装置可用于手持式拉曼光谱仪中,通过灵活调节样品与拉曼光谱仪物镜之间的相对距离,确保拉曼光谱仪最大程度地收集拉曼散射光,针对不同样品灵活快速寻找到放置样品的最佳位置,实现对待测样品进行准确定位。 The device can be used most handheld Raman spectrometer by flexibly adjusting the relative distance between the sample and the objective lens Raman spectrometer, a Raman spectrometer to ensure that the maximum degree of collection of the Raman scattered light, and flexible for different samples quickly find the sample is placed optimal position, sample to be measured to achieve accurate positioning.

附图说明 BRIEF DESCRIPTION

[0008] 下面结合附图对本发明进行详细说明。 DRAWINGS The invention is described in detail [0008] below in conjunction.

[0009] 图I是本发明的一种结构示意图。 [0009] FIG. I is a schematic view of the present invention.

[0010] 图2是本发明另一种结构示意图。 [0010] FIG. 2 is a schematic view of another structure of the present invention.

[0011] 图中的标号是:1.待测样品,2.镜筒,3.透镜支架,4.收集透镜,5.手持式拉曼光谱仪主体,6.导向螺杆,7.螺纹导槽。 [0011] FIG numbers here:.... A sample to be tested, the lens barrel 2, the lens holder 3, collection lens 4, 5 handheld Raman spectrometer body 6 of the lead screw, the thread guide grooves 7....

具体实施方式 detailed description

[0012] 从图I、图2中可以看出,一种手持式拉曼光谱仪调焦装置,其包括透镜支架3、收集透镜4,所述透镜支架3安装于手持式拉曼光谱仪主体5前端,收集透镜4固定安装在透镜支架3内。 [0012] From FIG. I, it can be seen in FIG. 2, a hand-Raman spectrometer focusing apparatus comprises a lens holder 3, collection lens 4, the lens holder 3 is attached to the handheld Raman spectrometer distal body 5 , collection lens 4 is fixedly mounted in the lens holder 3. 手持式拉曼光谱仪主体5以及与透镜支架3的连接,属于现有技术,不再赘述。 Handheld Raman spectrometer and a body 5 connected to the lens holder 3, belongs to the prior art, will not be repeated.

[0013] 本发明所述透镜支架3为圆形套筒,收集透镜4固定安装在透镜支架3圆形套筒内后部。 [0013] The lens holder 3 of the present invention a circular sleeve, collection lens 4 is fixedly mounted in the rear portion of the lens holder 3 circular sleeve. 透镜支架3圆形套筒内收集透镜3的前方可移动安装一镜筒2。 Collection lens within the lens holder 3 in front of the circular sleeve 3 is mounted a movable lens barrel 2. 透镜支架3圆形套筒的内径与镜筒外径相同,镜筒嵌于透镜支架3内,可在圆形套筒内沿光源光束方向灵活移动。 The same as the outer diameter of the lens barrel 3 and the inner diameter of the circular sleeve of the lens holder, the lens holder embedded in the barrel 3, the light source can be flexibly moved in the beam direction within a circular sleeve. 镜筒2外端面紧贴有待测样品1,通过移动镜筒2,调节待测样品I与收集透镜4之间的距离,实现对手持式拉曼光谱仪的调焦。 2 against the outer end surface of the lens barrel with a test sample 1, by moving the barrel 2, adjusting the distance between I and 4 test sample collection lens to achieve focusing of the handheld Raman spectrometer.

[0014] 图I是本发明的一种实施例的结构示意图。 [0014] Figure I is a block diagram of an embodiment of the present invention. 如图I所示,所述透镜支架3设有内螺纹,镜筒2相应的设有外螺纹,镜筒2与透镜支架3螺纹配合,转动镜筒2,其可在透镜支架3内沿光源光束方向前后移动。 FIG I in the lens holder 3 is provided with an internal thread, the lens barrel 2 is provided with a corresponding external thread, the lens barrel 2 is threadedly engaged with the lens holder 3, the lens barrel 2 is rotated, along which a light source within the lens holder 3 the light beam moves back and forth direction. 将待测样品I紧贴于镜筒2外端面,镜筒的移动即可带动待测样品沿光束方向相对于收集透镜移动,进而灵活调节待测样品与收集透镜之间的相对距离。 The sample to be tested I close contact with the outer end face of the lens barrel 2, the lens barrel to drive the movement of the test sample relative to the beam direction moving collection lens, thereby flexibly adjust the relative distance between the test sample and the collection lens. 在转动镜筒过程中,通过光谱软件可以实时观察采集到的光谱质量,当采集到样品光谱强度最大时停止镜筒移动,此时样品所在位置即该样品的最佳放置位置。 In the course of rotation of the lens barrel can be observed in real time by the mass spectra acquired spectral software, when the moving lens barrel is stopped to collect the maximum intensity of the sample spectra, i.e., the location of the sample at this time, the optimum location of the sample.

[0015] 图2是本发明的另一种实施例的结构示意图。 [0015] FIG. 2 is a schematic structural diagram of another embodiment of the present invention. 如图2所示,所述透镜支架3内下侧轴向设有导向螺杆6,镜筒2下侧轴向设有与所述导向螺杆6配合的螺纹导槽7,转动导向螺杆6,可带动镜筒在透镜支架内沿光源光束方向前后移动。 2, the lower side of the lens holder 3 within an axial guide is provided with a screw 6, the lens barrel 2 is provided with an axial side of the lead screw 6 with threaded guide groove 7, the rotation of the lead screw 6, moving the light source back and forth along the beam direction within the lens barrel to drive the lens holder. 将待测样品I紧贴于镜筒2外端,镜筒的移动可带动样品沿光束方向相对于收集透镜移动,进而灵活调节样品与收集透镜之间的相对距离。 The sample to be tested at I close the outer end of the lens barrel 2, the barrel can drive the mobile beam direction with respect to the sample collection lens moves, and thus the flexible adjustment of the relative distance between the sample and the collection lens. 在转动导向螺杆的过程中,通过光谱软件可以实时观察采集到的光谱质量,当采集到样品光谱强度最大时停止镜筒移动,此时样品所在位置即该样品的最佳放置位置。 During the rotation of the lead screw can be observed in real time by the mass spectra acquired spectral software, when the moving lens barrel is stopped to collect the maximum intensity of the sample spectra, i.e., the location of the sample at this time, the optimum location of the sample.

Claims (3)

  1. 1. 一种手持式拉曼光谱仪调焦装置,其包括透镜支架、收集透镜,所述透镜支架安装于手持式拉曼光谱仪主体前端,收集透镜固定安装在透镜支架内,其特征是:所述透镜支架为圆形套筒,圆形套筒内收集透镜的前方可移动安装一镜筒,镜筒外端面紧贴待测样品,通过移动镜筒,调节待测样品与收集透镜之间的距离。 1. A handheld Raman spectrometer focusing apparatus including a lens holder, collection lens, said lens holder is attached to the front end of the body handheld Raman spectrometer, collection lens mounted in the lens holder is fixed, characterized in that: said the lens holder is a circular sleeve, in front of the collection lens barrel movably mounted within a circular sleeve, the outer end surface of the lens barrel against the test sample, by moving the lens barrel, adjusting the distance between the test sample and the collection lens .
  2. 2.根据权利要求I所述的手持式拉曼光谱仪调焦装置,其特征是:所述透镜支架设有内螺纹,镜筒设有外螺纹,镜筒与透镜支架螺纹配合,转动镜筒,其可在透镜支架内沿光源光束方向前后移动。 The handheld Raman spectrometer focusing device of claim I, wherein wherein: the lens holder is provided with an internal thread, an external thread is provided with the lens barrel, the lens barrel and the lens holder threaded engagement, rotation of the barrel, which is movable along the longitudinal direction of the source light beam within the lens holder.
  3. 3.根据权利要求I所述的手持式拉曼光谱仪调焦装置,其特征是:所述透镜支架内下侧轴向设有导向螺杆,镜筒下侧轴向设有与所述导向螺杆配合的螺纹导槽,转动导向螺杆,可带动镜筒在透镜支架内沿光源光束方向前后移动。 The handheld Raman spectrometer focusing device according to claim I, wherein: a lead screw is provided with an axial lower side within the lens holder, the side provided with an axial lead screw with the barrel the thread guide groove, the guide screw is rotated, the lens barrel can be moved back and forth to drive the lens holder in the direction along the light beam.
CN 201210079375 2012-03-23 2012-03-23 Focusing device of handheld Raman spectrometer CN102621123A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104819974A (en) * 2015-04-23 2015-08-05 天津大学 Meat product adulteration detecting platform based on Raman spectrum
CN105486405A (en) * 2016-01-12 2016-04-13 天津纳正科技有限公司 Focus-adjustable spectrometer

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US20070002319A1 (en) * 2005-04-29 2007-01-04 Knopp Kevin J Method and apparatus for conducting Raman spectroscopy
CN101477050A (en) * 2009-02-02 2009-07-08 西南科技大学 Polycyclic aromatic hydrocarbon three-dimensional fluorescent on-line detecting instrument
CN202522518U (en) * 2012-03-23 2012-11-07 哈尔滨工业大学(威海) Handheld Raman spectrometer focusing device

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Publication number Priority date Publication date Assignee Title
US4082458A (en) * 1975-09-08 1978-04-04 Fuji Photo Film Co., Ltd. Densitometer
US6897951B2 (en) * 2003-02-14 2005-05-24 Raman Systems, Inc. Probe assemblies for Raman spectroscopy
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CN202522518U (en) * 2012-03-23 2012-11-07 哈尔滨工业大学(威海) Handheld Raman spectrometer focusing device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104819974A (en) * 2015-04-23 2015-08-05 天津大学 Meat product adulteration detecting platform based on Raman spectrum
CN105486405A (en) * 2016-01-12 2016-04-13 天津纳正科技有限公司 Focus-adjustable spectrometer

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