CN104597598A - Confocal device for Raman probe - Google Patents
Confocal device for Raman probe Download PDFInfo
- Publication number
- CN104597598A CN104597598A CN201410850701.4A CN201410850701A CN104597598A CN 104597598 A CN104597598 A CN 104597598A CN 201410850701 A CN201410850701 A CN 201410850701A CN 104597598 A CN104597598 A CN 104597598A
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- Prior art keywords
- diaphragm
- raman
- confocal device
- convex lens
- lenses
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Optics & Photonics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention relates to a confocal device for a Raman probe. The confocal device for the Raman probe comprises a diaphragm and two lenses, wherein the lenses are convex lenses, the center of the diaphragm is coaxial with the centers of the two lenses, the convex lenses are respectively a first convex lens and a second convex lens, the focal length of the second convex lens is equal to or larger than the focal length of the diaphragm. The confocal device for the Raman probe achieves the purposes that environment light no at a focal point and Raman light at other positions can not be focused on the small hole diaphragm after the environment light and the Raman light pass through the front lens, and thereby are blocked by the small hole diaphragm, and then can not enter a system, and therefore noise of the environment light is reduced, and a signal to noise ratio is increased.
Description
Technical field
The present invention relates to Raman spectroscopy, particularly relate to the confocal device for Raman probe.
Background technology
The information reliability obtained from Raman spectrum is not only relevant with Raman signal also relevant with noise.The ratio of the relative noise intensity of raman scattering intensity is called signal noise ratio, is the useful variable describing Raman spectrum quality.The precision of the information obtained from Raman spectrum is usually linear to be increased with signal to noise ratio (S/N ratio).So good Raman method is not only Raman signal intensity and is reached maximum, and makes noise reach minimum.
The most important noise source that Raman spectrum often runs into has shot noise, noise of instrument and bias light.Shot noise derives from the characteristic of exciting light itself, needs enough good coherent source, ensures the stability of excitation wavelength.Noise of instrument depends primarily on the design of Raman instrument.Because Raman scattering intensities is very weak, so the potential problems of bias light always Raman spectrum.
Raman probe is when usually using, and extraneous surround lighting, the Raman light that exciting light excites in light path all can the system of entering become noise.
Because above-mentioned defect, the design people, actively in addition research and innovation, to founding a kind of novel confocal device for Raman probe, make it have more value in industry.
Summary of the invention
For solving the problems of the technologies described above, the object of this invention is to provide that a kind of structure is simple, reasonable in design, the confocal device of favorable working performance Raman probe.
For realizing above order ground, technical scheme of the present invention is as follows:
For a confocal device for Raman probe, it is characterized in that: comprise diaphragm and two panels lens, described lens are convex lens, and described diaphragm center is coaxial with two panels lens center.
Further, described diaphragm is centrally located in described lens focus.
Further, described diaphragm and close lens can together with move.
Further, described diaphragm adopts the sheet metal through blackening process, carries out that accurate punching formed above.
By such scheme, the invention has the beneficial effects as follows:
After installing this device additional, the Raman light of surround lighting and other positions owing to cannot focus on aperture place after front lens, thus stopped cannot enter system by aperture, thus reduce the noise of surround lighting, increases signal to noise ratio (S/N ratio).
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of instructions, coordinates accompanying drawing to be described in detail as follows below with preferred embodiment of the present invention.
Accompanying drawing explanation
Fig. 1 structural representation of the present invention
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Fig. 1 is structural representation of the present invention, be made up of two panels convex lens and a slice diaphragm, light becomes parallel rays and enters the second convex lens 2 after entering the first convex lens 3, through the second convex lens 2 focus on laggard enter diaphragm 3, then go out from the aperture of diaphragm 1 and enter into Raman probe 4.In the present invention, the focus of the first convex lens 3, second convex lens 2 and the aperture of diaphragm 1 are on same straight line, the aperture of diaphragm 1 is positioned in the focus of the second convex lens 2, and the distance of diaphragm 1 and the second convex lens is fixed, and is in adjustment state simultaneously both when regulating.In order to avoid the loss of incident light and Raman light, the focal length that the focal length of the second convex lens 2 compares Raman probe is equal or slightly large.Diaphragm 1 is adopt through the sheet metal of blackening process, carries out that accurate punching formed above.
The above is only the preferred embodiment of the present invention; be not limited to the present invention; should be understood that; for those skilled in the art; under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (4)
1., for a confocal device for Raman probe, comprise diaphragm and the first convex lens and the second convex lens, it is characterized in that: the central coaxial of described diaphragm center and two panels convex lens.
2. confocal device according to claim 1, is characterized in that: described diaphragm is centrally located in described lens focus.
3. confocal device according to claim 1, is characterized in that: described diaphragm and close lens can together with move.
4. confocal device according to claim 1, is characterized in that: described diaphragm adopts the sheet metal through blackening process, carries out that accurate punching formed above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410850701.4A CN104597598A (en) | 2014-12-31 | 2014-12-31 | Confocal device for Raman probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410850701.4A CN104597598A (en) | 2014-12-31 | 2014-12-31 | Confocal device for Raman probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104597598A true CN104597598A (en) | 2015-05-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410850701.4A Pending CN104597598A (en) | 2014-12-31 | 2014-12-31 | Confocal device for Raman probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104597598A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067588A (en) * | 2015-08-17 | 2015-11-18 | 苏州优谱德精密仪器科技有限公司 | Novel enhanced Raman spectroscopy system |
| CN105067128A (en) * | 2015-08-17 | 2015-11-18 | 苏州优谱德精密仪器科技有限公司 | Exciting light device for detection optical path |
| CN105067587A (en) * | 2015-08-17 | 2015-11-18 | 苏州优谱德精密仪器科技有限公司 | Enhanced Raman spectroscopy system |
| CN105352932A (en) * | 2015-08-17 | 2016-02-24 | 苏州优谱德精密仪器科技有限公司 | New Raman probe confocal device |
| CN112834480A (en) * | 2020-12-31 | 2021-05-25 | 中国科学院合肥物质科学研究院 | A confocal Raman system for high-pressure, room-temperature and low-temperature experiments and its measurement method |
-
2014
- 2014-12-31 CN CN201410850701.4A patent/CN104597598A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067588A (en) * | 2015-08-17 | 2015-11-18 | 苏州优谱德精密仪器科技有限公司 | Novel enhanced Raman spectroscopy system |
| CN105067128A (en) * | 2015-08-17 | 2015-11-18 | 苏州优谱德精密仪器科技有限公司 | Exciting light device for detection optical path |
| CN105067587A (en) * | 2015-08-17 | 2015-11-18 | 苏州优谱德精密仪器科技有限公司 | Enhanced Raman spectroscopy system |
| CN105352932A (en) * | 2015-08-17 | 2016-02-24 | 苏州优谱德精密仪器科技有限公司 | New Raman probe confocal device |
| CN112834480A (en) * | 2020-12-31 | 2021-05-25 | 中国科学院合肥物质科学研究院 | A confocal Raman system for high-pressure, room-temperature and low-temperature experiments and its measurement method |
| CN112834480B (en) * | 2020-12-31 | 2023-02-03 | 中国科学院合肥物质科学研究院 | A confocal Raman system and measurement method for high-pressure room temperature and low temperature experiments |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150506 |
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| RJ01 | Rejection of invention patent application after publication |