CN208076399U - A kind of Raman signal collection system - Google Patents
A kind of Raman signal collection system Download PDFInfo
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- CN208076399U CN208076399U CN201820624827.3U CN201820624827U CN208076399U CN 208076399 U CN208076399 U CN 208076399U CN 201820624827 U CN201820624827 U CN 201820624827U CN 208076399 U CN208076399 U CN 208076399U
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Abstract
Raman signal collection system provided by the embodiments of the present application, in the system, the recess of the first accurate homocentric spherical mirror is opposite with the second accurate homocentric recess of spherical mirror, and the first semi-transparent semi-reflecting lens and the second semi-transparent semi-reflecting lens are respectively positioned on the both sides of the second homocentric spherical mirror of standard；One end of circular crystal optical fiber is connect with the first optical filtering, the other end of circular crystal optical fiber is connect with the second optical filtering, first optical filtering is opposite far from the first accurate homocentric side of spherical mirror with the first semi-transparent semi-reflecting lens, and the second optical filtering is opposite far from the first accurate homocentric side of spherical mirror with the second semi-transparent semi-reflecting lens；First off axis paraboloidal mirror, the second off axis paraboloidal mirror and ccd image sensor are arranged at the inside of circular crystal optical fiber；First off axis paraboloidal mirror is used for the reflected light back of the first semi-transparent semi-reflecting lens to ccd image sensor；Second off axis paraboloidal mirror is used for the reflected light back of the second semi-transparent semi-reflecting lens to ccd image sensor.
Description
Technical field
This application involves detection fields, in particular to a kind of Raman signal collection system.
Background technology
In the prior art, mainly carry out detection gas using hydrogen flame color spectrometer.But hydrogen flame color spectrometer can not detect non-hydrocarbon gas,
Gas Raman spectral signal is very faint, in first technology, enhancing Raman spectrum and collecting signal Shortcomings, and detection high-precision
Be difficult to wide-range it is compatible so that Raman spectrum gas instrument is difficult to promote and apply.
Apply for content
In view of this, the embodiment of the present application provides a kind of Raman signal collection system.
In a first aspect, the embodiment of the present application provides a kind of Raman signal collection system, it is accurate total the system comprises first
Heart spherical mirror, the second accurate homocentric spherical mirror, the first semi-transparent semi-reflecting lens, the second semi-transparent semi-reflecting lens, the first optical filtering, second are filtered
Mirror, the first off axis paraboloidal mirror, the second off axis paraboloidal mirror, ccd image sensor and circular crystal optical fiber；Described first is accurate
The recess of homocentric spherical mirror is opposite with the second homocentric recess of spherical mirror of standard, first semi-transparent semi-reflecting lens and described the
Two semi-transparent semi-reflecting lens are respectively positioned on the both sides of the described second accurate homocentric spherical mirror；One end of the circular crystal optical fiber and described first
Optical filtering connects, and the other end of the circular crystal optical fiber connect with second optical filtering, first optical filtering with it is described
The side far from the described first accurate homocentric spherical mirror of first semi-transparent semi-reflecting lens is opposite, second optical filtering and described the second half
The side far from the described first accurate homocentric spherical mirror of saturating semi-reflective mirror is opposite；First off axis paraboloidal mirror, the second off-axis throwing
Object plane mirror and ccd image sensor are arranged at the inside of the circular crystal optical fiber；First off axis paraboloidal mirror is used
In by the reflected light back of first semi-transparent semi-reflecting lens to the ccd image sensor；Second off axis paraboloidal mirror is used
In by the reflected light back of second semi-transparent semi-reflecting lens to the ccd image sensor.
In a possible design, the system also includes the first collecting lens group, the first collecting lens group is set
It sets in the side far from first optical filtering of first semi-transparent semi-reflecting lens.
First collecting lens group can play the Raman diffused light and second of the focal point to the first accurate homocentric spherical mirror
The effect that the Raman diffused light of the focal point of accurate homocentric spherical mirror is collected, converges, to introduce more draw as much as possible
Graceful scattering light is into circular crystal optical fiber.
In a possible design, the system also includes the second collecting lens group, the second collecting lens group is set
It sets in the side far from second optical filtering of second semi-transparent semi-reflecting lens.
Second collecting lens group can play the Raman diffused light and second of the focal point to the first accurate homocentric spherical mirror
The effect that the Raman diffused light of the focal point of accurate homocentric spherical mirror is collected, converges, to introduce more draw as much as possible
Graceful scattering light is into circular crystal optical fiber.
In a possible design, the focal length of the described first accurate homocentric spherical mirror is 53.5 millimeters.
The focus of described first accurate homocentric spherical mirror is 53.5 millis at a distance from the optical center of lens of the first accurate homocentric spherical mirror
Rice, i.e. Raman diffused light can with the first accurate homocentric 53.5 millimeters of spherical mirror place convergence.After Raman diffused light converges here
Transmission through circular crystal optical fiber and through the first semi-transparent semi-reflecting lens, the second semi-transparent semi-reflecting lens, the first off axis paraboloidal mirror, second from
Ccd image sensor is exposed to after the reflection of axis paraboloidal mirror.
In a possible design, the focal length of the described second accurate homocentric spherical mirror is 53.5 millimeters.
The focus of described second accurate homocentric spherical mirror is 53.5 millis at a distance from the optical center of lens of the second accurate homocentric spherical mirror
Rice, i.e. Raman diffused light can with the second accurate homocentric 53.5 millimeters of spherical mirror place convergence.After Raman diffused light converges here
Transmission through circular crystal optical fiber and through the first semi-transparent semi-reflecting lens, the second semi-transparent semi-reflecting lens, the first off axis paraboloidal mirror, second from
Ccd image sensor is exposed to after the reflection of axis paraboloidal mirror.
In a possible design, the focus of the described first accurate homocentric spherical mirror and the described second accurate homocentric spherical mirror
The distance between focus is 2.45 millimeters.
The distance between two focuses are 2.45 millimeters, and since incident light is after the first accurate homocentric spherical mirror incidence, meeting exists
The reflection that more than 2000 times is carried out between first accurate homocentric spherical mirror and the second accurate homocentric spherical mirror, therefore, in order to ensure incident light
The reflection that can carry out so many sub-quantity, need homocentric spherical mirror accurate to first, the second accurate homocentric spherical mirror focal length and
The distance between the two focus makes limitation.
In a possible design, the angle of first semi-transparent semi-reflecting lens and the first primary optical axis is 82.36 °, wherein
First primary optical axis is the optical axis perpendicular to first optical filtering.
For first primary optical axis perpendicular to the first optical filtering, the angle of the first semi-transparent semi-reflecting lens and the first primary optical axis is 82.36 °,
First semi-transparent semi-reflecting lens can play the role of that, through Raman diffused light, the drawing that will be projected from environment crystal optical fibre can also be played
The graceful effect for scattering light reflection to the first off axis paraboloidal mirror.The angle of first semi-transparent semi-reflecting lens and the first primary optical axis is in order to full
The above-mentioned effect of foot is obtained through many experiments adjustment.
In a possible design, the angle of second semi-transparent semi-reflecting lens and the second primary optical axis is 116.34 °,
In, second primary optical axis is the optical axis perpendicular to second optical filtering.
For second primary optical axis perpendicular to the second optical filtering, the angle of the second semi-transparent semi-reflecting lens and the second primary optical axis is 116.34 °,
Second semi-transparent semi-reflecting lens can play the role of that, through Raman diffused light, the drawing that will be projected from environment crystal optical fibre can also be played
The graceful effect for scattering light reflection to the second off axis paraboloidal mirror.The angle of second semi-transparent semi-reflecting lens and the second primary optical axis is in order to full
The above-mentioned effect of foot is obtained through many experiments adjustment.
In a possible design, the circular crystal optical fiber is annular hollow-core photonic crystal fiber.
The surface of the photonic crystal fiber can specifically increase Gold plated Layer, improve corrosion-resistant and optical reflective characteristics so that
The photonic crystal fiber has flexile dispersion characteristics.
The surface of the annular hollow-core photonic crystal fiber is covered with Gold plated Layer, improves corrosion-resistant and optical reflective characteristics.
Raman signal collection system provided by the embodiments of the present application has the beneficial effect that：
In Raman signal collection system provided by the embodiments of the present application, the system comprises the first accurate homocentric spherical mirror, the
Two accurate homocentric spherical mirrors, the first semi-transparent semi-reflecting lens, the second semi-transparent semi-reflecting lens, the first optical filtering, the second optical filtering, the first off-axis throwing
Object plane mirror, the second off axis paraboloidal mirror, ccd image sensor and circular crystal optical fiber；Described first accurate homocentric spherical mirror
Recess is opposite with the described second accurate homocentric recess of spherical mirror, first semi-transparent semi-reflecting lens and second semi-transparent semi-reflecting lens
It is respectively positioned on the both sides of the described second accurate homocentric spherical mirror；One end of the circular crystal optical fiber is connect with first optical filtering,
The other end of the circular crystal optical fiber is connect with second optical filtering, first optical filtering and described first semi-transparent semi-reflecting
The side far from the described first accurate homocentric spherical mirror of mirror is opposite, and second optical filtering is remote with second semi-transparent semi-reflecting lens
Side from the described first accurate homocentric spherical mirror is opposite；First off axis paraboloidal mirror, the second off axis paraboloidal mirror and CCD
Imaging sensor is arranged at the inside of the circular crystal optical fiber；First off axis paraboloidal mirror is used for described the first half
The reflected light back of saturating semi-reflective mirror is to the ccd image sensor；Second off axis paraboloidal mirror is used for described the second half
The reflected light back of saturating semi-reflective mirror is to the ccd image sensor, so as to improve the collection efficiency of Raman diffused light, enhancing
Raman spectral signal.
Above objects, features, and advantages to enable the embodiment of the present application to be realized are clearer and more comprehensible, it is cited below particularly compared with
Good embodiment, and coordinate appended attached drawing, it is described in detail below.
Description of the drawings
Illustrate the technical solutions in the embodiments of the present application or in the prior art in order to clearer, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the structure diagram for the Raman signal collection system that the application first embodiment provides；
Fig. 2 is the flow diagram for the Raman signal collection method that the application second embodiment provides.
Icon：Raman signal collection system 100；First accurate homocentric spherical mirror 110；Second accurate homocentric spherical mirror 120；First
Semi-transparent semi-reflecting lens 130；First collecting lens group 131；Second semi-transparent semi-reflecting lens 140；Second collecting lens group 141；First filters
Mirror 150；Second optical filtering 160；First off axis paraboloidal mirror 170；Second off axis paraboloidal mirror 180；Ccd image sensor 190；
Circular crystal optical fiber 210.
Specific implementation mode
First embodiment
The application first embodiment provides a kind of Raman signal collection system 100, refers to Fig. 1, the system comprises
First the 110, second accurate homocentric spherical mirror 120 of accurate homocentric spherical mirror, the first semi-transparent semi-reflecting lens 130, the second semi-transparent semi-reflecting lens 140,
First optical filtering 150, the second optical filtering 160, the first off axis paraboloidal mirror 170, the second off axis paraboloidal mirror 180, ccd image pass
Sensor 190 and circular crystal optical fiber 210.
The recess of described first accurate homocentric spherical mirror 110 is opposite with the recess of the described second accurate homocentric spherical mirror 120, described
First semi-transparent semi-reflecting lens 130 and second semi-transparent semi-reflecting lens 140 are respectively positioned on the two of the described second accurate homocentric spherical mirror 120
Side.
Refer to Fig. 1, the box surrounded by dotted line in Fig. 1 is resonant cavity, and incident ray is from the first accurate homocentric spherical mirror 110
After incidence, multiple reflection can be passed through in resonant cavity, specifically, more than 2000 reflection can be passed through.
One end of the circular crystal optical fiber 210 is connect with first optical filtering 150, the circular crystal optical fiber 210
The other end connect with second optical filtering 160, first optical filtering 150 is remote with first semi-transparent semi-reflecting lens 130
Side from the described first accurate homocentric spherical mirror 110 is opposite, second optical filtering 160 and second semi-transparent semi-reflecting lens 140
The side far from the described first accurate homocentric spherical mirror 110 it is opposite.First optical filtering 150 and the second optical filtering 160 can be with
The Rayleigh scattering in Raman diffused light is filtered out, and the Raman diffused light after optical filtering is introduced into circular crystal optical fiber 210.
Refer to Fig. 1, first off axis paraboloidal mirror 170, the second off axis paraboloidal mirror 180 and ccd image sensing
Device 190 is arranged at the inside of the circular crystal optical fiber 210；First off axis paraboloidal mirror 170 is used for described first
The reflected light back of semi-transparent semi-reflecting lens 130 is to the ccd image sensor 190；Second off axis paraboloidal mirror 180 is used for will
The reflected light back of second semi-transparent semi-reflecting lens 140 is to the ccd image sensor 190.
Specifically, it is carried out so that Raman diffused light penetrates the first semi-transparent semi-reflecting lens 130 and the first optical filtering 150 successively as an example
Explanation：Incident ray is after the first accurate homocentric spherical mirror 110 enters resonant cavity, in the first accurate homocentric spherical mirror 110 and second
The reflection for carrying out more than 2000 times between accurate homocentric spherical mirror 120, in the focal point of the homocentric spherical mirror of the first standard 110 and the
The focal point of two accurate homocentric spherical mirrors 120 forms Raman diffused light.
Raman diffused light penetrates the first semi-transparent semi-reflecting lens 130 successively and the first optical filtering 150 enters circular crystal optical fiber
In 210, then after the multiple reflections of circular crystal optical fiber 210, projected from close to one end of the second optical filtering 160, then successively
By the reflection of the second semi-transparent semi-reflecting lens 140, the second off axis paraboloidal mirror 180, it is reflected on ccd image sensor 190.
Raman diffused light can also penetrate the second semi-transparent semi-reflecting lens 140 successively and the second optical filtering 160 enters annular crystalline substance
In body optical fiber 210, then after the multiple reflections of circular crystal optical fiber 210, projected from close to one end of the first optical filtering 150,
The reflection for passing through the first semi-transparent semi-reflecting lens 130, the first off axis paraboloidal mirror 170 successively again, is reflected into ccd image sensor 190
On.
Specifically, the system also includes the first collecting lens group 131, the first collecting lens group 131 is arranged in institute
State the side far from first optical filtering 150 of the first semi-transparent semi-reflecting lens 130.First collecting lens group 131 can play pair
The Raman of the focal point of the Raman diffused light of the focal point of first accurate homocentric spherical mirror 110 and the second accurate homocentric spherical mirror 120
The effect that scattering light is collected, converges, to introduce more Raman diffused lights as much as possible into circular crystal optical fiber 210.
Specifically, the system also includes the second collecting lens group 141, the second collecting lens group 141 is arranged in institute
State the side far from second optical filtering 160 of the second semi-transparent semi-reflecting lens 140.Second collecting lens group 141 can play pair
The Raman of the focal point of the Raman diffused light of the focal point of first accurate homocentric spherical mirror 110 and the second accurate homocentric spherical mirror 120
The effect that scattering light is collected, converges, to introduce more Raman diffused lights as much as possible into circular crystal optical fiber 210.
Specifically, the focal length of the described first accurate homocentric spherical mirror 110 is 53.5 millimeters.Described first accurate homocentric spherical mirror
110 focus is 53.5 millimeters at a distance from the optical center of lens of the first accurate homocentric spherical mirror 110, i.e., Raman diffused light can with
It is converged at first accurate homocentric 11053.5 millimeters of spherical mirror.Biography through circular crystal optical fiber 210 after Raman diffused light converges here
It is defeated and through the first semi-transparent semi-reflecting lens 130, the second semi-transparent semi-reflecting lens 140, the first off axis paraboloidal mirror 170, the second off axis paraboloid mirror
Ccd image sensor 190 is exposed to after the reflection of mirror 180.
Specifically, the focal length of the described second accurate homocentric spherical mirror 120 is 53.5 millimeters.Described second accurate homocentric spherical mirror
120 focus is 53.5 millimeters at a distance from the optical center of lens of the second accurate homocentric spherical mirror 120, i.e., Raman diffused light can with
It is converged at second accurate homocentric 12053.5 millimeters of spherical mirror.Biography through circular crystal optical fiber 210 after Raman diffused light converges here
It is defeated and through the first semi-transparent semi-reflecting lens 130, the second semi-transparent semi-reflecting lens 140, the first off axis paraboloidal mirror 170, the second off axis paraboloid mirror
Ccd image sensor 190 is exposed to after the reflection of mirror 180.
Specifically, the focus of the focus of the described first accurate homocentric spherical mirror 110 and the described second accurate homocentric spherical mirror 120 it
Between distance be 2.45 millimeters.The distance between two focuses are 2.45 millimeters, since incident light is from the first accurate homocentric spherical mirror
After 110 incidences, more than 2000 reflection can be carried out between 110 and second accurate homocentric spherical mirror 120 of the first accurate homocentric spherical mirror,
Therefore, it in order to ensure that incident light can carry out the reflection of so many sub-quantity, needs to the first accurate homocentric spherical mirror 110, second
The distance between the focal length of accurate homocentric spherical mirror 120 and the two focus make limitation.
Specifically, the angle of first semi-transparent semi-reflecting lens, 130 and first primary optical axis is 82.36 °, wherein described first
Primary optical axis is the optical axis perpendicular to first optical filtering 150.For first primary optical axis perpendicular to the first optical filtering 150, first is semi-transparent
The angle of semi-reflective mirror 130 and the first primary optical axis is 82.36 °, and the first semi-transparent semi-reflecting lens 130 can be played through Raman diffused light
Effect, can also play the work that the Raman diffused light projected from environment crystal optical fibre is reflexed to the first off axis paraboloidal mirror 170
With.The angle of first semi-transparent semi-reflecting lens 130 and the first primary optical axis is to adjust acquisition through many experiments to meet above-mentioned effect.
First primary optical axis is the optical axis shown in the I in Fig. 1, and the angle of the first semi-transparent semi-reflecting lens 130 and the first primary optical axis is as shown in Figure 1
Included angle B.
Specifically, the angle of second semi-transparent semi-reflecting lens, 140 and second primary optical axis is 116.34 °, wherein described second
Primary optical axis is the optical axis perpendicular to second optical filtering 160.For second primary optical axis perpendicular to the second optical filtering 160, second is semi-transparent
The angle of semi-reflective mirror 140 and the second primary optical axis is 116.34 °, and the second semi-transparent semi-reflecting lens 140 can be played through Raman diffused light
Effect, can also play and the Raman diffused light projected from environment crystal optical fibre is reflexed into the second off axis paraboloidal mirror 180
Effect.The angle of second semi-transparent semi-reflecting lens 140 and the second primary optical axis is to adjust acquisition through many experiments to meet above-mentioned effect
's.Second primary optical axis is the optical axis shown in the II in Fig. 1, and the angle of the second semi-transparent semi-reflecting lens 140 and the second primary optical axis is that Fig. 1 shows
The angle C gone out.
Specifically, the circular crystal optical fiber 210 is annular hollow-core photonic crystal fiber.The surface of the photonic crystal fiber
Gold plated Layer can specifically be increased, improve corrosion-resistant and optical reflective characteristics so that the photonic crystal fiber has flexile
Dispersion characteristics.
The embodiment of the present application also provides a kind of Raman signal collection methods, refer to Fig. 2, the method includes walking as follows
Suddenly：
Step S110 makes collimation laser be irradiated into the first accurate homocentric spherical mirror 110 with the first incident angle.
First incident angle is A angles shown in Fig. 1, and the numerical value of the angle is specially 20.352 °.
Step S120, by the collimation laser in 110 and second accurate homocentric spherical mirror 120 of the described first accurate homocentric spherical mirror
The resonance intracavity reflecting preset times surrounded, to make the collimation laser in the focus of the described first accurate homocentric spherical mirror 110
Place and form Raman diffused light in the focal point of the described second accurate homocentric spherical mirror 120.
Raman diffused light is two ellipses between 110 and second accurate homocentric spherical mirror 120 of the first accurate homocentric spherical mirror
Region, the region is away from the Raman diffused light formed for multiple reflections.
Step S130, Raman diffused light penetrates the first semi-transparent semi-reflecting lens 130 successively, the first optical filtering 150 injects annular crystalline substance
Body optical fiber 210, and projected from second optical filtering 160 through the circular crystal optical fiber 210.
Raman diffused light can carry out multiple reflections in circular crystal optical fiber 210, so that scattered light signal is passing
During defeated collimating effect is obtained after multiple reflections.
Step S140, the Raman diffused light projected through the second optical filtering 160 pass through the second semi-transparent semi-reflecting lens successively
140, ccd image sensor 190 is exposed to after the reflection of the second off axis paraboloidal mirror 180.
Raman diffused light can be completed to converge and focus on ccd image sensor 190 through off axis paraboloidal mirror, realized
Whole collection.
Raman signal collection system 100 and method provided by the embodiments of the present application have the beneficial effect that：
It is accurate homocentric the system comprises first in Raman signal collection system 100 and method provided by the embodiments of the present application
The accurate homocentric spherical mirror 120 of spherical mirror 110, second, the first semi-transparent semi-reflecting lens 130, the second semi-transparent semi-reflecting lens 140, the first optical filtering
150, the second optical filtering 160, the first off axis paraboloidal mirror 170, the second off axis paraboloidal mirror 180, ccd image sensor 190 with
And circular crystal optical fiber 210；The recess of described first accurate homocentric spherical mirror 110 is recessed with the described second accurate homocentric spherical mirror 120
It falls into relatively, first semi-transparent semi-reflecting lens 130 and second semi-transparent semi-reflecting lens 140 are respectively positioned on the described second accurate homocentric spherical surface
The both sides of mirror 120；One end of the circular crystal optical fiber 210 is connect with first optical filtering 150, the circular crystal optical fiber
210 other end is connect with second optical filtering 160, first optical filtering 150 and first semi-transparent semi-reflecting lens 130
Side far from the described first accurate homocentric spherical mirror 110 is opposite, second optical filtering 160 and second semi-transparent semi-reflecting lens
140 side far from the described first accurate homocentric spherical mirror 110 is opposite；First off axis paraboloidal mirror 170, second is thrown off axis
Object plane mirror 180 and ccd image sensor 190 are arranged at the inside of the circular crystal optical fiber 210；Described first off-axis throwing
Object plane mirror 170 is used for the reflected light back of first semi-transparent semi-reflecting lens 130 to the ccd image sensor 190；Described
Two off axis paraboloidal mirrors 180 are used for the reflected light back of second semi-transparent semi-reflecting lens 140 to the ccd image sensor
190, so as to improve the collection efficiency of Raman diffused light, enhance raman spectral signal.
It should be noted that each embodiment in this specification is described in a progressive manner, each embodiment weight
Point explanation is all difference from other examples, and the same or similar parts between the embodiments can be referred to each other.
For device class embodiment, since it is basically similar to the method embodiment, so fairly simple, the related place ginseng of description
See the part explanation of embodiment of the method.
In several embodiments provided herein, it should be understood that disclosed device and method can also pass through it
Its mode is realized.The apparatus embodiments described above are merely exemplary, for example, the flow chart and block diagram in attached drawing are aobvious
The device of multiple embodiments according to the application, architectural framework in the cards, the work(of method and computer program product are shown
It can and operate.In this regard, each box in flowchart or block diagram can represent one of a module, section or code
Point, a part for the module, section or code includes one or more for implementing the specified logical function executable
Instruction.It should also be noted that at some as in the realization method replaced, the function of being marked in box can also be attached to be different from
The sequence marked in figure occurs.For example, two continuous boxes can essentially be basically executed in parallel, they also may be used sometimes
To execute in the opposite order, this is depended on the functions involved.It is also noted that each of block diagram and or flow chart
The combination of box in box and block diagram and or flow chart, function or the dedicated of action are based on as defined in execution
The system of hardware is realized, or can be realized using a combination of dedicated hardware and computer instructions.
In addition, each function module in each embodiment of the application can integrate to form an independent portion
Point, can also be modules individualism, can also two or more modules be integrated to form an independent part.
It, can be with if the function is realized and when sold or used as an independent product in the form of software function module
It is stored in a computer read/write memory medium.Based on this understanding, the technical solution of the application is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be expressed in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be
People's computer, server or network equipment etc.) execute each embodiment the method for the application all or part of step.
And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.It needs
Illustrate, herein, relational terms such as first and second and the like be used merely to by an entity or operation with
Another entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this realities
The relationship or sequence on border.Moreover, the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.It should be noted that：Similar label and letter exist
Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and is explained.
The above, the only specific implementation mode of the application, but the protection domain of the application is not limited thereto, it is any
Those familiar with the art can easily think of the change or the replacement in the technical scope that the application discloses, and should all contain
It covers within the protection domain of the application.Therefore, the protection domain of the application shall be subject to the protection scope of the claim.
Claims (10)
1. a kind of Raman signal collection system, which is characterized in that the system comprises the first accurate homocentric spherical mirror, the second standard are homocentric
Spherical mirror, the first semi-transparent semi-reflecting lens, the second semi-transparent semi-reflecting lens, the first optical filtering, the second optical filtering, the first off axis paraboloidal mirror,
Second off axis paraboloidal mirror, ccd image sensor and circular crystal optical fiber；
The recess of described first accurate homocentric spherical mirror is opposite with the described second accurate homocentric recess of spherical mirror, and described first semi-transparent half
Anti- mirror and second semi-transparent semi-reflecting lens are respectively positioned on the both sides of the described second accurate homocentric spherical mirror；
One end of the circular crystal optical fiber is connect with first optical filtering, the other end of the circular crystal optical fiber with it is described
Second optical filtering connects, first optical filtering and the separate described first accurate homocentric spherical mirror of first semi-transparent semi-reflecting lens
Side is opposite, the side phase far from the described first accurate homocentric spherical mirror of second optical filtering and second semi-transparent semi-reflecting lens
It is right；
It is brilliant that first off axis paraboloidal mirror, the second off axis paraboloidal mirror and ccd image sensor are arranged at the annular
The inside of body optical fiber；First off axis paraboloidal mirror is used for the reflected light back of first semi-transparent semi-reflecting lens to described
Ccd image sensor；Second off axis paraboloidal mirror is used for the reflected light back of second semi-transparent semi-reflecting lens to described
Ccd image sensor.
2. system according to claim 1, which is characterized in that the system also includes the first collecting lens group, described
One collecting lens group is arranged in the side far from first optical filtering of first semi-transparent semi-reflecting lens.
3. system according to claim 1, which is characterized in that the system also includes the second collecting lens group, described
Two collecting lens groups are arranged in the side far from second optical filtering of second semi-transparent semi-reflecting lens.
4. system according to claim 1, which is characterized in that the focal length of the described first accurate homocentric spherical mirror is 53.5 millis
Rice.
5. system according to claim 4, which is characterized in that the focal length of the described second accurate homocentric spherical mirror is 53.5 millis
Rice.
6. system according to claim 5, which is characterized in that the focus and described second of the described first accurate homocentric spherical mirror
The distance between the focus of accurate homocentric spherical mirror is 2.45 millimeters.
7. system according to claim 1, which is characterized in that the angle of first semi-transparent semi-reflecting lens and the first primary optical axis
It it is 82.36 °, wherein first primary optical axis is the optical axis perpendicular to first optical filtering.
8. system according to claim 1, which is characterized in that the angle of second semi-transparent semi-reflecting lens and the second primary optical axis
It it is 116.34 °, wherein second primary optical axis is the optical axis perpendicular to second optical filtering.
9. system according to claim 1, which is characterized in that the circular crystal optical fiber is annular hollow photon crystal light
It is fine.
10. system according to claim 9, which is characterized in that the surface covering of the annular hollow-core photonic crystal fiber
There is Gold plated Layer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820624827.3U CN208076399U (en) | 2018-04-27 | 2018-04-27 | A kind of Raman signal collection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820624827.3U CN208076399U (en) | 2018-04-27 | 2018-04-27 | A kind of Raman signal collection system |
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| CN108344727B (en) * | 2018-04-27 | 2024-01-30 | 中国石油化工集团有限公司 | Raman signal collection system and method |
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