CN102621123A - Focusing device of handheld Raman spectrometer - Google Patents
Focusing device of handheld Raman spectrometer Download PDFInfo
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- CN102621123A CN102621123A CN2012100793752A CN201210079375A CN102621123A CN 102621123 A CN102621123 A CN 102621123A CN 2012100793752 A CN2012100793752 A CN 2012100793752A CN 201210079375 A CN201210079375 A CN 201210079375A CN 102621123 A CN102621123 A CN 102621123A
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- lens
- raman spectrometer
- lens barrel
- collecting
- carrier
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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
Technical field
The invention belongs to the optical-mechanical field, be specifically related to a kind of hand-held Raman spectrometer focus control.
Background technology
The hand-held Raman spectrometer has that volume is little, detection mode flexibly, be suitable for advantage such as on-the-spot detection, be widely used in fields such as pharmacy, food security, explosive monitorings.The hand-held Raman spectrometer generally is made up of lasing light emitter, outside optical system, spectroscope, detector and computer processing system; Wherein the collecting lens in the outside optical system (object lens) accurately incides the testing sample place after light beam of light source is assembled, and the collection testing sample receives the Raman diffused light that laser beam excites generation.After the instrument light path system is fixing; The laser beam focal position is fixed, but when detecting, the sample of different materials is different to the requirement that laser beam focuses on its internal depth; Have only when laser beam focuses on certain certain location of testing sample inside; Raman spectrometer could more effectively be collected Raman diffused light, and the slight variations of testing sample position all can produce very big influence to the collecting efficiency of scattered light, therefore; When actual detected, need the relative distance between flexible testing sample and the instrument front end object lens, the optimum position that sample is placed during with definite the detection.Hand-held Raman spectrometer flexibility characteristics in use; Require it that a kind of device that can carry out flexible positioning to different samples is arranged in testing process; Yet; Commercially available various hand-held Raman spectrometers all can't provide the device of realizing this function at present; Detect and directly testing sample is close to instrument lens barrel front end, may cause like this having reduced the analytical performance of hand-held Raman spectrometer owing to even collection more weak to the inaccurate raman spectrum strength that collects in sample location occur less than phenomenons such as spectrum.
Summary of the invention
Technical matters to be solved by this invention is the deficiency that overcomes above-mentioned prior art; Provide a kind of simple in structure; Form rationally; Can the flexible testing sample and the Raman spectrometer collecting lens between relative distance, guarantee that Raman spectrometer farthest collects Raman diffused light, realize the hand-held Raman spectrometer focus control that testing sample is accurately located.
The technical scheme that the present invention solves the problems of the technologies described above employing is: a kind of hand-held Raman spectrometer focus control; It comprises lens carrier, collecting lens; Said lens carrier is installed on hand-held Raman spectrometer body front end, and collecting lens is fixedly mounted in the lens carrier, it is characterized in that: said lens carrier is a circular sleeve; Removable installation one lens barrel in the place ahead of collecting lens in the circular sleeve; Testing sample is close in the lens barrel outer face, through moving lens barrel, regulates the distance between testing sample and the collecting lens.
Lens carrier according to the invention is provided with internal thread, and lens barrel is provided with external thread, and lens barrel and lens carrier threaded engagement are rotated lens barrel, and it can move forward and backward along the light beam of light source direction in lens carrier.
Lens carrier inner underside according to the invention is axially arranged with guide spiro rod, and the lens barrel downside is axially arranged with the thread guide groove that cooperates with said guide spiro rod, rotates guide spiro rod, can drive lens barrel and in lens carrier, move forward and backward along the light beam of light source direction.
A lens barrel movably is equipped with in the present invention in the lens carrier circular sleeve; Testing sample is close to the lens barrel outer face; Be positioned at position,, can drive testing sample and move flexibly in the light beam of light source direction through moving lens barrel perpendicular to the light beam of light source direction; Regulate the distance between testing sample and the collecting lens, realize focusing the hand-held Raman spectrometer.Against existing technologies, the present invention is simple in structure, forms rationally, can the flexible testing sample and the Raman spectrometer collecting lens between relative distance.This device can be used in the hand-held Raman spectrometer; Through the relative distance between flexible sample and the Raman spectrometer object lens; Guarantee that Raman spectrometer farthest collects Raman diffused light; Search out the optimum position of placing sample flexibly fast to different samples, realize testing sample is accurately located.
Description of drawings
Below in conjunction with accompanying drawing the present invention is elaborated.
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is the another kind of structural representation of the present invention.
Label among the figure is: 1. testing sample, 2. lens barrel, 3. lens carrier, 4. collecting lens, 5. hand-held Raman spectrometer main body, 6. guide spiro rod, 7. thread guide groove.
Embodiment
From Fig. 1, Fig. 2, can find out, a kind of hand-held Raman spectrometer focus control, it comprises lens carrier 3, collecting lens 4, and said lens carrier 3 is installed on hand-held Raman spectrometer main body 5 front ends, and collecting lens 4 is fixedly mounted in the lens carrier 3.Hand-held Raman spectrometer main body 5 and with being connected of lens carrier 3, belong to prior art, repeat no more.
Fig. 1 is the structural representation of a kind of embodiment of the present invention.As shown in Figure 1, said lens carrier 3 is provided with internal thread, and lens barrel 2 is provided with external thread accordingly, and lens barrel 2 and lens carrier 3 threaded engagement rotate lens barrel 2, and it can move forward and backward along the light beam of light source direction in lens carrier 3.Testing sample 1 is close to lens barrel 2 outer faces, and the moving of lens barrel can drive testing sample and to move with respect to collecting lens along beam direction, and then the relative distance between flexible testing sample and the collecting lens.In rotating the lens barrel process, the spectral quality that can Real Time Observation collects through spectrum software stops lens barrel when maximum and moves when collecting sample spectra intensity, the i.e. best placement location of this sample in sample position this moment.
Fig. 2 is the structural representation of another kind of embodiment of the present invention.As shown in Figure 2, said lens carrier 3 inner undersides are axially arranged with guide spiro rod 6, and lens barrel 2 downsides are axially arranged with the thread guide groove 7 that cooperates with said guide spiro rod 6, rotate guide spiro rod 6, can drive lens barrel and in lens carrier, move forward and backward along the light beam of light source direction.Testing sample 1 is close to lens barrel 2 outer ends, and the moving of lens barrel can drive sample and to move with respect to collecting lens along beam direction, and then the relative distance between flexible sample and the collecting lens.In rotating the process of guide spiro rod, the spectral quality that can Real Time Observation collects through spectrum software stops lens barrel when maximum and moves when collecting sample spectra intensity, the i.e. best placement location of this sample in sample position this moment.
Claims (3)
1. hand-held Raman spectrometer focus control, it comprises lens carrier, collecting lens, said lens carrier is installed on hand-held Raman spectrometer body front end; Collecting lens is fixedly mounted in the lens carrier; It is characterized in that: said lens carrier is a circular sleeve, removable installation one lens barrel in the place ahead of collecting lens in the circular sleeve, and testing sample is close in the lens barrel outer face; Through moving lens barrel, regulate the distance between testing sample and the collecting lens.
2. hand-held Raman spectrometer focus control according to claim 1; It is characterized in that: said lens carrier is provided with internal thread, and lens barrel is provided with external thread, lens barrel and lens carrier threaded engagement; Rotate lens barrel, it can move forward and backward along the light beam of light source direction in lens carrier.
3. hand-held Raman spectrometer focus control according to claim 1; It is characterized in that: said lens carrier inner underside is axially arranged with guide spiro rod; The lens barrel downside is axially arranged with the thread guide groove that cooperates with said guide spiro rod; Rotate guide spiro rod, can drive lens barrel and in lens carrier, move forward and backward along the light beam of light source direction.
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CN2012100793752A CN102621123A (en) | 2012-03-23 | 2012-03-23 | Focusing device of handheld Raman spectrometer |
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CN2012100793752A CN102621123A (en) | 2012-03-23 | 2012-03-23 | Focusing device of handheld Raman spectrometer |
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Cited By (6)
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 |
CN106872443A (en) * | 2017-03-24 | 2017-06-20 | 北京极光仪器科技有限公司 | Tool installs the Portable Raman spectrometer of slot |
CN111060494A (en) * | 2019-12-28 | 2020-04-24 | 安徽中科赛飞尔科技有限公司 | Chip feedback adjusting device for SERS detection |
CN113405658A (en) * | 2020-03-17 | 2021-09-17 | 谱钜科技股份有限公司 | Spectrometer |
CN114371131A (en) * | 2022-02-18 | 2022-04-19 | 北京简智仪器设备有限公司 | Automatic focusing mechanism of Raman spectrometer |
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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 |
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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2012
- 2012-03-23 CN CN2012100793752A patent/CN102621123A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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 |
Cited By (7)
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 |
CN106872443A (en) * | 2017-03-24 | 2017-06-20 | 北京极光仪器科技有限公司 | Tool installs the Portable Raman spectrometer of slot |
CN111060494A (en) * | 2019-12-28 | 2020-04-24 | 安徽中科赛飞尔科技有限公司 | Chip feedback adjusting device for SERS detection |
CN113405658A (en) * | 2020-03-17 | 2021-09-17 | 谱钜科技股份有限公司 | Spectrometer |
CN114371131A (en) * | 2022-02-18 | 2022-04-19 | 北京简智仪器设备有限公司 | Automatic focusing mechanism of Raman spectrometer |
CN114371131B (en) * | 2022-02-18 | 2024-01-23 | 北京简智仪器设备有限公司 | Automatic focusing mechanism of Raman spectrometer |
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Application publication date: 20120801 |