CN107870399A - A kind of special light receives structure - Google Patents
A kind of special light receives structure Download PDFInfo
- Publication number
- CN107870399A CN107870399A CN201610853318.3A CN201610853318A CN107870399A CN 107870399 A CN107870399 A CN 107870399A CN 201610853318 A CN201610853318 A CN 201610853318A CN 107870399 A CN107870399 A CN 107870399A
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- China
- Prior art keywords
- optical fiber
- light
- signal
- receives
- optical
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
Abstract
The invention discloses a kind of special light to receive structure, it includes receiving optical fiber, flashlight collection light path system and pumping optical collimator, flashlight collects signal coupled lens, dichroic filter and the signal collection condenser lens that light path system includes sequentially coaxially setting, article to be measured is located at the focal point of signal collection condenser lens, the pumping optical collimator is located at the side of dichroic filter, and the pump light that pumping optical collimator projects is radiated at dichroic filter back reflection to signal collection condenser lens；Receive optical fiber as more, more piece-root graftings are formed fibre bundle by optical fiber, are respectively received optical fiber and are each attached on a set casing with spherical structure, and the optical receiving end for respectively receiving optical fiber closes up the focal point for being gathered in signal coupled lens.Signal collection optical fiber in light path of optical spectrometer is distributed by the present invention using three-dimensional spherical, improves the efficiency of light energy utilization of signal collection one end, and then can reach enhancing Raman spectroscopy system signal intensity, improves system sensitivity and signal to noise ratio.
Description
Technical field
The present invention relates to optical instrument field, more particularly to a kind of special light to receive structure.
Background technology
As shown in figure 1, in the prior art the light of Raman spectrometer receive structure include 01, signal coupled lens 02, two to
Colo(u)r filter 03, signal collection lens 04 and pumping optical collimator 05, the pump light that pumping optical collimator 05 is sent are irradiated to two
It is radiated at again on to colo(u)r filter 03 in back reflection to signal collection lens 04, after line focus on article 06 to be measured, article to be measured
06, which is stimulated, produces Raman light, and Raman light sequentially passes through signal collection lens 04, dichroic filter 03 and signal coupled lens
Enter after 02 in 01, because 01 only has one in said structure, and the NA values for receiving optical fiber 01 are not more than 0.5, so as to cause
Most of Raman light can not enter in 01, cause a large amount of optical energy loss.
The content of the invention
In order to solve the deficiency that the Raman spectrometer efficiency of light energy utilization is low in the prior art, it is an object of the invention to provide one
Kind improves the efficiency of light energy utilization of signal collection one end, and then the special light for strengthening Raman spectroscopy system signal receives knot
Structure.
To achieve the above object, the present invention uses following technical scheme：
A kind of special light receives structure, including receives optical fiber, flashlight collection light path system and pumping optical collimator, the signal
Light collects signal coupled lens, dichroic filter and the signal collection condenser lens that light path system includes sequentially coaxially setting,
Article to be measured is located at the focal point of signal collection condenser lens, and the pumping optical collimator is located at the side of dichroic filter,
The pump light that pumping optical collimator projects is radiated at dichroic filter back reflection to signal collection condenser lens；The receiving
Optical fiber is more, and more piece-root graftings are formed fibre bundle by optical fiber, respectively receives optical fiber and is each attached on a set casing with spherical structure,
And the optical receiving end for respectively receiving optical fiber closes up the focal point for being gathered in signal coupled lens.
A kind of special light receives structure, including receives optical fiber, flashlight collection light path system and pumping optical collimator, described
The signal coupled lens, dichroic filter and signal collection that flashlight collects light path system and includes sequentially coaxially setting focus on thoroughly
Mirror, article to be measured are located at the focal point of signal collection condenser lens, and the pumping optical collimator is located at the one of dichroic filter
Side, the pump light that pumping optical collimator projects are radiated at dichroic filter back reflection to signal collection condenser lens；It is described
Receive optical fiber as more, more piece-root graftings are formed fibre bundle by optical fiber, are respectively received optical fiber and are each attached to a fixation with spherical structure
On shell, and the optical receiving end for respectively receiving optical fiber closes up aggregation, and the light, which receives structure, also includes a bare fibre, and the light of bare fibre is defeated
Enter end and be located at the focal points of signal coupled lens, and the light output end of bare fibre is located at that each to receive closing up for optical fiber optical receiving end poly-
Ji Chu.
The optical fiber that receives is the circular core optical fiber that NA values are 0.22-0.48, or the optical fiber that receives is rectangle fibre core
Optical fiber.
The signal coupled lens and signal collection condenser lens are the non-spherical lens that NA values are 0.7-1.
The present invention uses above technical scheme, and signal collection optical fiber in light path of optical spectrometer is distributed using three-dimensional spherical, carried
High RST collects the efficiency of light energy utilization of one end, and then can reach enhancing Raman spectroscopy system signal intensity, and it is sensitive to improve system
Degree and signal to noise ratio.
Brief description of the drawings
The present invention is described in further details below in conjunction with the drawings and specific embodiments：
Fig. 1 is that the light of Raman spectrometer in the prior art receives the schematic diagram of structure；
Fig. 2 is the schematic diagram that the special light of the present invention receives constructive embodiment 1；
Fig. 3 is the schematic diagram that the special light of the present invention receives constructive embodiment 2.
Embodiment
Embodiment 1, as shown in Fig. 2 the present invention includes receiving optical fiber 1, flashlight collection light path system 2 and pump light collimation
Device 3, flashlight collect signal coupled lens 21, dichroic filter 22 and the signal that light path system 2 includes sequentially coaxially setting
Condenser lens 23 is collected, dichroic filter 22 produces transmission to Raman light and reflection is then produced to pump light, and article 4 to be measured is set
In the focal point of signal collection condenser lens 23, pumping optical collimator 3 is located at the side of dichroic filter 22, pump light collimation
The pump light that device 3 projects is radiated at the back reflection of dichroic filter 22 to signal collection condenser lens 23；It is more to receive optical fiber 1
Root, more piece-root graftings are formed fibre bundle by optical fiber 1, are respectively received optical fiber 1 and are each attached on a set casing with spherical structure, and respectively connect
Closed up the focal point for being gathered in signal coupled lens 21 by the optical receiving end of optical fiber 1.
Wherein, it is the circular core optical fiber that NA values are 0.22-0.48 to receive optical fiber 1, or it is rectangle core light to receive optical fiber 1
It is fine.Signal coupled lens 21 and signal collection condenser lens 23 are the non-spherical lens that NA values are 0.7-1.
The operation principle of the present embodiment：Signal collection optical fiber in light path of optical spectrometer is distributed using three-dimensional spherical, improves letter
Number collect one end the efficiency of light energy utilization, and then can reach enhancing Raman spectroscopy system signal intensity.In addition, signal coupled lens
21 and signal collection condenser lens 23 using the high non-spherical lenses of NA, high NA non-spherical lens so that signal collection end
Numerical aperture increases so that and more Raman signals are collected, meanwhile, use high NA in the signal coupled lens 21 of signal coupled end
Non-spherical lens, light beam focus on to form the of a relatively high light beams of NA through non-spherical lens, then are used three-dimensional spherical space distribution
Multiple low NA reception optical fibers combinations receive, to reach the purpose of the raising system efficiency of light energy utilization, while can strengthening system sensitivity
And signal to noise ratio.
Embodiment 2, as shown in figure 3, the present invention includes receiving optical fiber 1, flashlight collection light path system 2 and pump light collimation
Device 3, flashlight collect signal coupled lens 21, dichroic filter 22 and the signal that light path system 2 includes sequentially coaxially setting
Condenser lens 23 is collected, dichroic filter 22 produces transmission to Raman light and reflection is then produced to pump light, and article 4 to be measured is set
In the focal point of signal collection condenser lens 23, pumping optical collimator 3 is located at the side of dichroic filter 22, pump light collimation
The pump light that device 3 projects is radiated at the back reflection of dichroic filter 22 to signal collection condenser lens 23；It is more to receive optical fiber 1
Root, more piece-root graftings are formed fibre bundle by optical fiber 1, are respectively received optical fiber 1 and are each attached on a set casing with spherical structure, and respectively connect
Closed up aggregation by the optical receiving end of optical fiber 1, light, which receives structure, also includes a bare fibre 5, and the light input end of bare fibre 5 is located at signal
The focal point of coupled lens 21, and the light output end of bare fibre 5 be located at it is each receive the optical receiving end of optical fiber 1 close up habitat.
Wherein, it is the circular core optical fiber that NA values are 0.22-0.48 to receive optical fiber 1, or it is rectangle core light to receive optical fiber 1
It is fine.Signal coupled lens 21 and signal collection condenser lens 23 are the non-spherical lens that NA values are 0.7-1.
The operation principle of embodiment 2 and embodiment 1 is essentially identical, unlike, documents 2 use the transition of bare fibre 5,
Because bare fibre 5 has high NA values, therefore it can further improve the utilization rate of luminous energy.
Claims (4)
1. a kind of special light receives structure, including receives optical fiber, flashlight collection light path system and pumping optical collimator, the letter
The signal coupled lens, dichroic filter and signal collection that number light collects light path system and includes sequentially coaxially setting focus on saturating
Mirror, article to be measured are located at the focal point of signal collection condenser lens, and the pumping optical collimator is located at the one of dichroic filter
Side, the pump light that pumping optical collimator projects are radiated at dichroic filter back reflection to signal collection condenser lens；It is special
Sign is：For the optical fiber that receives for more, more piece-root graftings are formed fibre bundle by optical fiber, respectively receive optical fiber and be each attached to one to have sphere
On the set casing of structure, and the optical receiving end for respectively receiving optical fiber closes up the focal point for being gathered in signal coupled lens.
2. a kind of special light receives structure, including receives optical fiber, flashlight collection light path system and pumping optical collimator, the letter
The signal coupled lens, dichroic filter and signal collection that number light collects light path system and includes sequentially coaxially setting focus on saturating
Mirror, article to be measured are located at the focal point of signal collection condenser lens, and the pumping optical collimator is located at the one of dichroic filter
Side, the pump light that pumping optical collimator projects are radiated at dichroic filter back reflection to signal collection condenser lens；It is special
Sign is：For the optical fiber that receives for more, more piece-root graftings are formed fibre bundle by optical fiber, respectively receive optical fiber and be each attached to one to have sphere
On the set casing of structure, and the optical receiving end for respectively receiving optical fiber closes up aggregation, and the light, which receives structure, also includes a bare fibre, naked
The light input end of optical fiber is located at the focal point of signal coupled lens, and the light output end of bare fibre is located at and each receives optical fiber light-receiving
End closes up habitat.
3. a kind of special light according to claim 1 or 2 receives structure, it is characterised in that：The optical fiber that receives is NA values
For 0.22-0.48 circular core optical fiber, or the optical fiber that receives is rectangle doped core optical fiber.
4. a kind of special light according to claim 1 or 2 receives structure, it is characterised in that：The signal coupled lens and
Signal collection condenser lens is the non-spherical lens that NA values are 0.7-1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610853318.3A CN107870399A (en) | 2016-09-27 | 2016-09-27 | A kind of special light receives structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610853318.3A CN107870399A (en) | 2016-09-27 | 2016-09-27 | A kind of special light receives structure |
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| CN107870399A true CN107870399A (en) | 2018-04-03 |
Family
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| CN201610853318.3A Pending CN107870399A (en) | 2016-09-27 | 2016-09-27 | A kind of special light receives structure |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101115986A (en) * | 2004-12-09 | 2008-01-30 | 科学技术设备委员会 | Raman spectral analysis of sub-surface tissues and fluids |
| CN102353630A (en) * | 2011-06-28 | 2012-02-15 | 重庆大学 | Continuous spectrum light source |
| JPWO2013061590A1 (en) * | 2011-10-25 | 2015-04-02 | コニカミノルタ株式会社 | Optical probe and manufacturing method thereof |
| CN104949958A (en) * | 2015-06-26 | 2015-09-30 | 北京杏林睿光科技有限公司 | Novel Raman probe based on optical fiber beam splitter |
| CN204694636U (en) * | 2015-06-26 | 2015-10-07 | 北京杏林睿光科技有限公司 | A kind of novel Raman probe based on fiber optic splitter |
| US20160202124A1 (en) * | 2015-01-09 | 2016-07-14 | California Institute Of Technology | Context imaging raman spectrometer |
| CN205426795U (en) * | 2016-03-23 | 2016-08-03 | 北京杏林睿光科技有限公司 | From novel raman probe who takes light source |
-
2016
- 2016-09-27 CN CN201610853318.3A patent/CN107870399A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101115986A (en) * | 2004-12-09 | 2008-01-30 | 科学技术设备委员会 | Raman spectral analysis of sub-surface tissues and fluids |
| CN102353630A (en) * | 2011-06-28 | 2012-02-15 | 重庆大学 | Continuous spectrum light source |
| JPWO2013061590A1 (en) * | 2011-10-25 | 2015-04-02 | コニカミノルタ株式会社 | Optical probe and manufacturing method thereof |
| US20160202124A1 (en) * | 2015-01-09 | 2016-07-14 | California Institute Of Technology | Context imaging raman spectrometer |
| CN104949958A (en) * | 2015-06-26 | 2015-09-30 | 北京杏林睿光科技有限公司 | Novel Raman probe based on optical fiber beam splitter |
| CN204694636U (en) * | 2015-06-26 | 2015-10-07 | 北京杏林睿光科技有限公司 | A kind of novel Raman probe based on fiber optic splitter |
| CN205426795U (en) * | 2016-03-23 | 2016-08-03 | 北京杏林睿光科技有限公司 | From novel raman probe who takes light source |
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Application publication date: 20180403 |
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