CN207850923U - Light scattering confocal excitation collection system - Google Patents
Light scattering confocal excitation collection system Download PDFInfo
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- CN207850923U CN207850923U CN201721690574.1U CN201721690574U CN207850923U CN 207850923 U CN207850923 U CN 207850923U CN 201721690574 U CN201721690574 U CN 201721690574U CN 207850923 U CN207850923 U CN 207850923U
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Abstract
The utility model is related to a kind of light scattering confocal excitation collection systems comprising:2N optical reflective devices, 2N optical reflective devices have the same focus, diverging light from the focus can be reflected by remaining optical reflective devices, and after being reflected by first optical reflective devices at least again by the focus (2) successively.Excitation light source can be repeated several times reflection through several optical devices or even focus on focus by the light scattering confocal excitation collection system of the utility model, increase excitation light source utilization ratio, at the same can the light scattering signal that is sent out to solid space of focus point efficiently collected.
Description
Technical field
The utility model is related to optical fields, and in particular to a kind of light scattering confocal excitation collection system.
Background technology
When light and substance interact, substance can send out light scattering signal, such as Raman scattering signal, auspicious
Sharp scattered signal, brillouin scattering signal etc..
When using excitation light source deexcitation transparent sample such as gas, solution, due to most light source energy
Amount all penetrates transparent sample, does not have to interact with transparent sample and cause excitation light source service efficiency low.
And the light scattering signal that transparent sample is sent out is the signal emitted to solid space, will scatter the light to solid space
Scattered signal, which is fully collected, could improve collection efficiency, improve signal strength and signal-to-noise ratio.
The method for arranging multiple acquisition probes can improve light scattering signal collection efficiency, but can not improve incident excitation
The service efficiency of light source, and equipment instrument can be caused huge, it is expensive.
Therefore, be actually used to improve in the prior art the mode of light scattering signal all inefficiency, be difficult to promote.
Utility model content
For the above-mentioned problems in the prior art, the utility model is desirable to provide a kind of light scattering confocal excitation collection
System not only can adequately utilize the energy of excitation light source, but also can improve light and dissipate in the case of only a set of collection system
Penetrate the collection efficiency of signal.
Certainly, the scattering light collecting system of the utility model is not limited only to use and carried out to target light using laser
Scattering light in the case of excitation is collected, and exciting light is not limited only to laser first, secondly, it is convenient to omit exciting light.The utility model
Scattering light confocal excitation collection system can apply it is various needs light is collected in the environment of.
Specifically, the utility model provides a kind of light scattering confocal excitation collection system, which is characterized in that including：2N
A optical reflective devices, wherein N are the natural number more than or equal to 1, and 2N optical reflective devices slant setting matches two-by-two, are come
It, can be successively by remaining optical reflective devices from the diverging light of the equipment focus after being reflected by first optical reflective devices
In at least partly reflection, and at least again by the equipment focus, 2N optical reflective devices have the same equipment
Focus.
Preferably, 2N optical reflective devices include N number of steering optical reflective devices and N number of convergence optical reflector
Part, each steerings optical reflective devices be used for will the light reflection from the equipment focus to N number of convergence optical reflector
One in part, it is each converge optical reflective devices for will the light reflection from upper one steering optical reflective devices to described
Equipment focus is simultaneously incident to next steering optical reflective devices across the equipment focus.
Preferably, the optical reflective devices are the oblique reflection optical reflective devices that focus is located at the equipment focus,
In, the diverging light from equipment focus is reflected into directional light to be incident to N number of convergence optics anti-by each optical reflective devices that turn to
One in emitter part, each optical reflective devices that converge are used to converge to from the light of upper one steering optical reflective devices
The equipment focus is simultaneously incident to next steering optical reflective devices across the equipment focus.
Preferably, the light scattering confocal excitation collection system further includes end reflection optical device, the end reflection
Optical device receives the last one convergence optical reflective devices and passes through the reflected light of the equipment focus, and the reflected light is converged
To the equipment focus.
Preferably, each optical reflective devices constitute the light scattering confocal excitation around equipment focus arrangement
Collection system, and reserve laser light incident mouth.
Preferably, the light scattering confocal excitation collection system further includes incident light rays device, is entered through laser light incident mouth
The laser penetrated converges to the equipment focus by the incident light rays device.
Preferably, further include source shifted reflections mirror, the upper of the source shifted reflections mirror has a laser light incident mouth, described
End reflection optical device includes the transfer optics and terminal shifted reflections mirror that focus is located at the equipment focus, described
Incident laser from the last one convergence optical reflective devices is converted by transfer optics by transmission or reflection mode
Directional light is incident to the terminal shifted reflections mirror, and the terminal shifted reflections mirror has water relative to the transfer optics
Flat offset, so that being incident on the laser of the terminal shifted reflections mirror first position from the second of the terminal shifted reflections mirror
Position is emitted.
The course of work of the confocal excitation collection system of the utility model is as follows：Sent out by equipment focus or passed through equipment
The excitation light source and light scattering signal of focus, it is anti-by optics after being transferred to optical reflective devices (preferably oblique reflection optical device)
Emitter part is reflected towards next optical reflective devices, and is reflected towards, converges or focuses on equipment by next optical reflective devices
Focus.The excitation light source and light scattering signal that equipment focus is focused on by optical reflective devices, transmitted after equipment focus to
Next optical reflective devices, end reflection optical device or source reflective optical device etc. or transmit out light scattering it is confocal swash
Send out collection system.
The excitation light source for injecting light scattering confocal excitation collection system is irradiated to the 1st optical reflection after equipment focus
Device, the 2nd optical reflective devices are reflected by the 1st optical reflective devices, and equipment is focused on by the 2nd optical reflective devices
Then focus reaches the 3rd optical reflective devices, until excitation light source is focused on equipment focus by the 2N optical reflective devices
After be emitted out light scattering confocal excitation collection system.The number of optical reflective devices according to excitation light source enter light scattering it is confocal swash
1,2,3 are followed successively by and sends out the order that collection system is passed through ... 2N.In the process, excitation light source n times are gathered by optical reflective devices
Coke arrives equipment focus, if excitation light source cannot be focused on equipment focus, this optical reflection by the last one optical reflective devices
Device is not included in light scattering confocal excitation collection system.
Excitation light source include but not limited to laser, halogen light, gas discharge shine, Light-Emitting Diode shine, field cause
Electroluminescent lamp shines etc., and excitation light source described above combination.
Light scattering signal includes but not limited to Raman scattering signal, fluorescent scattering, brillouin scattering signal, Rayleigh scattering letter
Number, Compton scattering signal, Mie scattering signal etc., and signal described above combination.
Optical reflective devices, source optical reflective devices, final-optics reflection device can be an optical elements, also may be used
To be the combination of multiple optical elements, 2N oblique reflection optical device can be identical optical device, can also be different
Optical device.Can also two optical reflective devices share an optical device, i.e. excitation light source, light scattering signal passes through equipment
Focus is irradiated to one region of an optical reflective devices, then is reflected into its another region by this optical reflective devices, so
It is focused onto equipment focus again afterwards.
End reflection optical device refers to the optical device that following effects are played to excitation light source and light scattering signal, i.e., will
By the 2N optical reflective devices reflection by excitation light source, the light scattering signal of equipment focus incoming terminal reflective optical device
Reflection reaches the 2N oblique reflection optical device by equipment focus.End reflection optical device can be an optical element,
It can also be the combination of multiple optical elements.Excitation light source, light scattering signal can once or repeatedly pass through end reflection light
Learn device.
Source reflective optical device refers to the optical device that following effects are played to excitation light source and light scattering signal, i.e., will
Excitation light source, the light scattering signal of source reflective optical device are reached by equipment focus by the 1st optical reflective devices reflection
Reflection reaches the 1st oblique reflection optical device by equipment focus.
Equipment focus refers to the smaller range of each optical reflective devices near focal point, emits to end reflection optical device
Focus is reflected back by end reflection optical device and source reflective optical device with the light scattering signal of source reflective optical device,
Emit to the light scattering signal of the 2M oblique reflection optical device and is reflected towards 2M-1 tiltedly by the 2M oblique reflection optical device
Then reflective optical device is reflected back focus by the 2M-1 oblique reflection optical device, emit to the 2M-1 oblique reflection optics
The light scattering signal of device is reflected towards the 2M oblique reflection optical device by the 2M-1 oblique reflection optical device, then by 2M
A oblique reflection optical device is reflected back focus.Wherein M is the natural number for being less than or equal to N more than or equal to 1.
When the collection system of the utility model is applied to the equipment such as Raman, the emitter transmitting of excitation light source swashs
Light emitting source excites the light scattering signal of the sample positioned at equipment focus by oblique reflection optical device after equipment focus, and terminal is anti-
Optical device is penetrated, source reflective optical device is collected, and is transferred to analytical equipment and conversion equipment, and handled by data processing equipment
And record.
Analytical equipment includes but not limited to monochromator, spectrometer, the combination of the devices such as interferometer and apparatus above.
Conversion equipment, which refers to, to record light scattering signal, or converts the light to the signals such as electricity, magnetic, sound, power, heat
Recorded include but unlimited photoelectrical coupler, photomultiplier, oscillograph, the devices such as temperature-sensitive galvanic couple and apparatus above
Combination.
Data processing equipment includes but not limited to computer, printer, oscillograph, the data processing equipments such as mobile phone, or more
The combination of equipment.
It should be noted that " diverging light from equipment focus " that is previously mentioned in the utility model is referred to equipment coke
Point is launching centre transmitting, or converges to the light after the equipment focus and through the equipment focus, that is, the diverging light
Including the various light or laser that can be treated as to be sent out from equipment focus.
" optical reflective devices " being previously mentioned in the utility model are not limited only to the optical device independently constituted, can also refer to
The optical device being made of multiple components.
Advantageous effect：The light scattering confocal excitation collection system of the utility model excites transparent sample when utilizing excitation light source
When the scattered signal of product, the energy of excitation light source can be efficiently utilized, light scattering signal also can be by 2N optical reflective devices
It collects, is emitted to specific direction.After increasing end reflection optical device and source reflective optical device, the utilization of excitation light source
Efficiency further increases even forms use of the oscillation to the excitation light source that is multiplied in light scattering confocal excitation collection system
Efficiency.
The light scattering confocal excitation collection system can focus on excitation light source through the multiplicating of several optical devices
Equipment focus makes full use of the energy of excitation light source, excitation to be located at the function of the light scattering signal of the sample of equipment focus, simultaneously
It can efficiently be collected to being scattered to the light scattering signal of solid space positioned at the sample of equipment focus.
Description of the drawings
The utility model patent is further illustrated with reference to the accompanying drawings and examples.
Fig. 1-1 is the planar structure schematic diagram of the confocal excitation collection system of the utility model one embodiment；
Fig. 1-2 is the stereochemical structure schematic diagram of another embodiment of the utility model.In Fig. 1-1 and 1-2,1.1-1.2N tables
Show oblique reflection optical device, 2 indicate equipment focus, and 3 indicate end reflection optical device, and 4 indicate source reflective optical device.
Fig. 2 is the light path schematic diagram of incident light in the confocal excitation collection system in the utility model embodiment；
Fig. 3-1 is the light path schematic diagram that light is scattered in the confocal excitation collection system in the utility model embodiment；
The light path schematic diagram of emergent light in confocal excitation collection system in Fig. 3-2 the utility model embodiments；
Fig. 4 shows that turning to optical reflective devices 1. (2M-1) and convergence optical reflective devices 1.2M uses same optics
The example of device.
Fig. 5 shows that turning to optical reflective devices 1. (2M-1) and convergence optical reflective devices 1.2M uses different optics
The example of device.
Fig. 6-1 shows combination the showing as steering optical reflective devices using concave mirror and plane mirror
Example.
Fig. 6-2 show the combination using convex lens mirror and plane mirror come respectively as turn to optical reflective devices and
Converge the example of optical device.
Fig. 7-1,7-2,7-3,7-4,7-5 be respectively with 1 group, 2 groups, 3 groups, 4 groups, 5 groups of steering optical reflective devices and
Converge the light scattering confocal excitation collection system of optical reflective devices combination.
Fig. 8 shows a kind of application example of the confocal excitation collection system of the utility model.
The example as end reflection device or source reflection device using concave mirror is shown in Fig. 9-1.
Show combination using lens and speculum as end reflection device or source reflection device in Fig. 9-2
Example.
It shows in Fig. 9-3 and is reflected as end reflection device or source using the combination of concave mirror and speculum
The example of device.
Show that the combination using lens and corner cube mirror is anti-as end reflection component module or source in Fig. 9-4
Penetrate the example of component module.
Show that the combination using lens and corner cube mirror is anti-as end reflection component module and source in Figure 10
Penetrate the complete optical path schematic diagram of component module.
Specific implementation mode
Fig. 1-1 is the planar structure signal of the light scattering confocal excitation collection system of one embodiment of the utility model
Figure.As shown in Fig. 1-1,1.1 to 1.2N indicate the optical reflective devices for being reflected back and forth, are used in the present embodiment oblique
Reflective optical device.2 indicate equipment focus, and 3 indicate end reflection optical device, and 4 indicate source reflective optical device.The light dissipates
It includes 2N optical reflective devices 1 to penetrate confocal excitation collection system, and wherein N is the natural number more than or equal to 1,2N optical reflection
Device 1 has the same focus 2, referred to herein as equipment focus, and the diverging light from equipment focus 2 is by first optical reflection
After device reflection, it can be reflected successively by remaining optical reflective devices, and at least again by the equipment focus 2.
Specifically, for being applied in Raman spectrometer, the center of source reflective optical device 4 be equipped with entrance port or
Incidence hole (can also eccentric setting), laser are injected by incidence hole inside light scattering confocal excitation collection system.Incident laser
In 2 incidence of opposite equipment focus and the sample being radiated at equipment focus 2.Laser irradiation is in sample (Tthe utility model system master
If be directed to transparent or semitransparent sample design) on after, the sample being partly or entirely transmitted through at equipment focus 2,
And then be further incident on first oblique reflection optical device 1.1, which is to turn to optical reflector
Part 1.1.If it is directional light to be incident on and turn to the laser of optical reflective devices 1.1, turns to optical reflective devices 1.1 and use plane
Incident laser on it is directly reflexed to convergence optical reflective devices 1.2 by mirror.If being incident on steering optical reflective devices
1.1 laser is diverging light, then turns to optical reflective devices 1.1 and use paraboloidal mirror, it is anti-that diverging light is converted into directional light
It is incident upon convergence optical reflective devices 1.2.
Preferably, when laser light incident, incident at 2 position of equipment focus, the laser transmitted in this way from equipment focus 2 is focused on
For diverging light, turns to optical reflective devices 1.1 and the paraboloidal mirror at equipment focus 2 is located at using focus, the laser of diverging reaches
After turning to optical reflective devices 1.1, it is converted into directional light, convergence optical reflective devices 1.2 is incident to, converges optical reflector
Part 1.2 receives the laser of parallel incidence and the laser is converged to equipment focus 2 again, the diverging being emitted from equipment focus 2
Laser then continues the next steering optical reflective devices of directive, and so on, until laser light incident is in end reflection optics device
On part 3, end reflection optical device 3 is mounted on the downstream of even number oblique reflection optical device, namely convergence optical reflector
The optical path downstream of part.For example, it is assumed that end reflection optical device 3 is mounted on the 6th oblique reflection optical device, i.e., the 3rd convergence
The optical path downstream of optical reflective devices, with the 3rd convergence optical reflective devices relative to equipment focus 2 about focus phase each other
To setting, end reflection optical device 3 from equipment focus 2 for will send out or be equal to the light reflection sent out from equipment focus 2
And equipment focus 2 is converged in again.For example, end reflection optical device 3 can be the spherical mirror that focus is located at equipment focus 2.
When laser irradiation is on sample, since Raman scattering, Rayleigh scattering can occur for the interaction of sample and laser
Phenomena such as, and then scattering light can be sent out by the sample positioned at equipment focus 2.For the scattering light that excitation generates, meeting
It is sent out from all directions of the equipment focus 2 into collection system.Assuming that a branch of scattering light is sent out by the sample of equipment focus 2,
And be radiated at and turn on optical mirror 1.1, the signal light of diverging reaches turn to optical reflective devices 1.1 after, be converted into putting down
Row light, is incident to convergence optical reflective devices 1.2, and convergence optical reflective devices 1.2 receive the signal light of parallel incidence and should
Signal light converges to equipment focus 2 again, and the signal light being emitted from equipment focus 2 then continues directive, and next to turn to optics anti-
Emitter part, and so on, until signal light is incident on end face reflection optical device 3, end face reflection optical device 3 is by signal
Light reflection simultaneously converges in equipment focus 2 again, i.e., along backtracking, is finally emitted from source reflective optical device 4.
Fig. 1-2 is the stereochemical structure schematic diagram of another embodiment of the utility model.It is clearer to show in the present embodiment
The stereochemical structure of confocal excitation collection system.Each device is indicated in order to become apparent from, only depict two groups of steering reflections in figure
Optical device 1.1,1.3 and convergence reflective optical device 1.2,1.4.
It should be noted that in above-described embodiment, light scattering confocal excitation collection system is added to end reflection device, should
End reflection device receives the last one convergence optical reflective devices and passes through the laser of equipment focus 2 or come from equipment focus 2
Signal light, and received Guang Yuanlu is reflected back.It will be understood, however, to one skilled in the art, that for certain applications
Scene, it is convenient to omit end reflection device is not provided with laser and signal light being reflected back by end reflection device original road
Device.
End reflection optical device makes the exciting light reflected by the 2N oblique reflection optical device focus on focus arrival
Source reflective optical device and then the 2N oblique reflection optics of directive after focus is focused on by the reflection of end reflection optical device
Device is reflected into the 2N-1 oblique reflection optical device by the 2N oblique reflection optical device, and so on, until exciting light by
After 1st oblique reflection optical device reflection focuses on focus, it is emitted out light scattering confocal excitation collection system.Exciting light is from entrance
Light scattering confocal excitation collection system is emitted to from light scattering confocal excitation collection system, focuses on focus total 2N+1 times.
End reflection optical device also makes the light scattering signal reflected by the 2N oblique reflection optical device through overfocus
After incoming terminal reflective optical device, scattered together with the light scattering signal of end reflective optical device by end reflection with focus
Optical device reflection the 2N oblique reflection optical device of directive after overfocus, the is reflected by the 2N oblique reflection optical device
2N-1 oblique reflection optical device, and so on, until light scattering signal is reflected by the 1st oblique reflection optical device through overfocus
After be emitted out light scattering confocal excitation collection system.Emit to 2N oblique reflection optical device (or even emit oblique to even number
Speculum) and end reflection optical device light scattering signal, it is tiltedly anti-by the 1st after increasing end reflective optical device
It penetrates optical device reflection and is emitted out light scattering confocal excitation collection system after overfocus.
Source reflective optical device 4 so that the light scattering signal reflected by the 1st oblique reflection optical device through overfocus to
Up to after source reflective optical device, by source reflective optical device reflection the 1st oblique reflection optics device of directive after overfocus
Part is reflected into the 2nd oblique reflection optical device by the 1st oblique reflection optical device, by the 2nd oblique reflection optical device reflection warp
The 3rd oblique reflection optical device of directive after overfocus, until light scattering signal is focused by the 2N oblique reflection optical device reflection
Light scattering confocal excitation collection system is emitted out after to focus.Emit the light scattering signal to 2N oblique reflection optical device,
Light scattering is emitted out after overfocus after increase source reflective optical device by the 2N oblique reflection optical device reflection to be total to
Coke excitation collection system.
Meanwhile the collective effect of end reflection optical device and source reflective optical device so that by the 2N oblique reflection
The excitation light source of optical device reflection focuses on after focus incoming terminal reflective optical device, is reflected by end reflective optical device
The 2N oblique reflection optical device of directive after focus is focused on, until excitation light source is poly- by the 1st oblique reflection optical device reflection
Source reflective optical device is reached after coke to focus, then directive the 1st after focus is focused on by the reflection of source reflective optical device
Oblique reflection optical device reaches end reflection until excitation light source focuses on focus by the 2N oblique reflection optical device reflection
Optical device makes excitation light source form oscillation in light scattering confocal excitation collection system.If 2N oblique reflection optical device,
Reflective optical device, source reflective optical device is held wherein to have 1 or several optical devices that can be transmitted with reflected excitation light source
Light scattering signal, then excitation light source vibrated in light scattering confocal excitation collection system, be inspired positioned at the sample of focus
Light scattering signal is emitted out light scattering confocal excitation collection system by 1 of transmission scattered signal or several component modules.
Although in above-described embodiment only by several steering optical reflective devices and convergence optical reflective devices in a manner of into
Capable description, it will be recognized to those skilled in the art that more steering optical reflections may be used in oblique reflection optical device
Device and convergence optical reflective devices, as long as ensureing that each steering optical reflective devices can be by the light from equipment focus 2
One be reflected towards in multiple convergence optical reflective devices, as long as each convergence optical reflective devices can will come from upper one
A light reflection for turning to optical reflective devices is incident to next steering optical reflection to (preferably converging to) equipment focus 2
Device.
The light path signal for the exciting light that light scattering confocal excitation collection system is injected in another embodiment is shown in Fig. 2
Figure.
As shown in Fig. 2, the exciting light for injecting light scattering confocal excitation collection system irradiates after focusing on equipment focus 2
To the 1st oblique reflection optical device 1.1 (being used as turning to optical reflective devices), it is reflected by the 1st oblique reflection optical device 1.1
2nd oblique reflection optical device 1.2 (being used as convergence optical reflective devices), coke is focused on by the 2nd oblique reflection optical device 1.2
Then point 2 reaches the 3rd oblique reflection optical device 1.3, until the 2N oblique reflection optical device 1.2N focuses excitation light source
Light scattering confocal excitation collection system is emitted out after to focus.In the present embodiment, end reflection device is not used.
Fig. 3-1 shows in the collection system of embodiment illustrated in fig. 2 that a kind of light path for the scattering light that sample is sent out is illustrated
Figure.As shown in figure 3-1, it from the scattering sent out positioned at the sample of focus 2 to the light scattering signal of solid space, scatters to the 1st, 3,
5 ... etc. are referred to as the 2M-1 oblique reflection optical device 1. (2M-1), natural numbers of the M between 1 and N.By the 2M-1 oblique reflection
Optical device 1. (2M-1) is reflected into the 2M oblique reflection optical device 1.2M, anti-by the 2M oblique reflection optical device 1.2M
It penetrates, the 2M+1 oblique reflection optical device 1. (2M+1) is reached after equipment focus 2, until light scattering signal is oblique by 2N
After reflective optical device 1.2N reflections, light scattering confocal excitation collection system is emitted out through overfocus 2.
Fig. 3-2 shows in the collection system of embodiment illustrated in fig. 2 that another light path for the scattering light that sample is sent out is illustrated
Figure, from the scattering that is sent out positioned at the sample of focus 2 to the light scattering signal of solid space, the etc. that is irradiated to the 2nd, 4,6 ... is referred to as the
2M oblique reflection optical device 1.2M is reflected into the 2M-1 oblique reflection optical device by the 2M oblique reflection optical device 1.2M
1. (2M-1) is reflected by the 2M-1 oblique reflection optical device 1. (2M-1), the 2M-2 oblique reflection light is reached after overfocus
Device 1. (2M-2) is learned, after light scattering signal is reflected by the 1st oblique reflection optical device 1.1, light extraction is emitted through overfocus 2
Scatter confocal excitation collection system.
Fig. 4, which is shown, turns to the case where reflective optical device is used cooperatively with convergence reflective optical device.Above-described embodiment
In steering reflective optical device and the structure that is all made of of convergence reflective optical device, that is, tilted-putted parabolic reflector
Mirror.
In another embodiment, as shown in Figure 5, paraboloid is substituted using the combination of convex lens and plane mirror
Speculum realizes the effect for turning to reflective optical device.It is similar as shown in Fig. 6-2, using convex lens and plane mirror
Combination to substitute parabolic mirror, realize and turn to and the effect of convergence reflective optical device.Convex lens will be for that will come from
The diverging light of focus is converted into directional light, and plane mirror is for being turned to.Fig. 6-1 show when steering and convergence
When being not suitable for directly carrying out light path connection between reflective optical device, it is added to the situation of the plane mirror for transfer.
Fig. 7-1,7-2,7-3,7-4,7-5 be respectively with 1 group, 2 groups, 3 groups, 4 groups, 5 groups of steering optical reflective devices and
Converge the light scattering confocal excitation collection system of optical reflective devices combination.The work of these light scattering confocal excitation collection systems
Process is similar with the embodiment in Fig. 1 and Fig. 2, is to be used as to turn to optical device using the oblique optical mirror of odd-numbered,
The oblique reflection optical device that number is even number is used to be used as convergence optical device.Therefore, it is not detailed herein.
Fig. 8 shows that the confocal excitation collection system of the utility model applies the example in Raman spectrometer.Such as Fig. 8 institutes
Show comprising excitation light source 5, analytical equipment 6, conversion equipment 7 and data processing set 8.The exciting light warp that excitation light source 5 emits
Excitation is positioned at the light scattering signal of the sample of equipment focus 2 after crossing equipment focus 2, and light scattering signal is by being total in above-described embodiment
After coke excitation collection system is collected, collected (for example, being entered by the laser on source reflection device by source reflective optical device 4
Perforation backtracking simultaneously passes through light splitting), it is transferred to analytical equipment 6 and conversion equipment 7, and 8 standby processing and note are set by data processing
Record.
Three kinds of different end reflection devices or source reflector are respectively illustrated in Fig. 9-1, Fig. 9-2 and Fig. 9-3
The structure of part.These structures those skilled in the art are based on attached drawing i.e. it can be appreciated that being not detailed herein.
Show the combination using lens and corner cube mirror as end reflection device and source reflector in Fig. 9-4
The example of part.In the present embodiment, end reflection device and source reflection device all use offset to construct.
Specifically, as shown in Figure 10, source reflection device uses source shifted reflections mirror, on source shifted reflections mirror
With laser light incident mouth, exciting light enters collection system by entrance port and is irradiated to equipment focal point.The spy of offset speculum
Point is that the light of offset speculum can will be incident to by first position, is reflected from the second place of offset speculum
It goes, exit direction is opposite with incident direction, emergent light and incident light is parallel to each other both only has horizontal displacement.The present embodiment
In, offset speculum uses corner cube mirror, and two inner side edges of corner cube mirror are two speculums, and it is anti-to be incident on right angle
Penetrate mirror first while incident light reflect through first while after, be emitted from the second side of corner cube mirror.Incidence hole for exciting light
It is arranged between the both sides of corner cube mirror.
Offset is reflected in Figure 10 and is applied in combination with the collection system of the utility model, realizes more focusing and letter
Number enhancing.
Preferably, source reflection device further includes the condenser lens that focus is located at equipment focus 2, for incident excitation
Light is focused.
Similarly, end reflection device include focus be located at the transfer optics (such as convex lens) of equipment focus 2 with
And terminal shifted reflections mirror, transfer optics will come from the last one convergence optical reflective devices by transmission or reflection mode
Incident laser be converted into directional light and be incident to terminal shifted reflections mirror, terminal shifted reflections mirror has relative to transfer optics
There is horizontal-shift (i.e. the center of terminal shifted reflections mirror not the optical axis face with convex lens in figure), so that it is inclined to be incident on terminal
The laser for moving speculum first position is emitted from the second position of terminal shifted reflections mirror.
The signal strength that can be multiplied is constructed using this offset.
Although the principles of the present invention are described in detail in the preferred embodiment above in conjunction with the utility model,
It should be appreciated by those skilled in the art that above-described embodiment is only the explanation to the exemplary implementation of the utility model, and
The non-restriction to the utility model scope.Details in embodiment does not constitute the limitation to the scope of the utility model,
Without departing substantially from the utility model spirit and scope in the case of, any equivalent transformation based on technical solutions of the utility model, letter
Single replacement etc. is obvious to be changed, and is all fallen within scope of protection of the utility model.
Claims (8)
1. a kind of light scattering confocal excitation collection system, which is characterized in that including：2N optical reflective devices, wherein N be more than
Natural number equal to 1,2N optical reflective devices slant setting, is matched two-by-two, and 2N optical reflective devices have the same coke
Point (2), the diverging light from the focus (2), can be successively by remaining optics after being reflected by first optical reflective devices
At least partly reflection in reflection device, and at least again by the focus.
2. light scattering confocal excitation collection system according to claim 1, which is characterized in that 2N optical reflective devices packet
N number of steering optical reflective devices and N number of convergence optical reflective devices are included, each steering optical reflective devices are in the future
From the light reflection of the focus (2) to N number of one converged in optical reflective devices, each convergence optical reflective devices are used for will
Light reflection from upper one steering optical reflective devices is incident to next to the focus (2) and across the focus (2)
Turn to optical reflective devices.
3. light scattering confocal excitation collection system according to claim 2, which is characterized in that the optical reflective devices
(1) it is located at the oblique reflection optical reflective devices of the focus (2) for focus, wherein each optical reflective devices that turn to will come from
The diverging light of focus (2) is reflected into one that directional light is incident in N number of convergence optical reflective devices, each converges optical reflection
Device is used to that the focus (2) will to be converged to from the light of upper one steering optical reflective devices and enters across the focus (2)
It is incident upon next steering optical reflective devices.
4. light scattering confocal excitation collection system according to claim 3, which is characterized in that
The light scattering confocal excitation collection system further includes end reflection optical device, and the end reflection optical device receives
The last one convergence optical reflective devices passes through the reflected light of the focus (2), and the reflected light is converged to the focus
(2)。
5. light scattering confocal excitation collection system according to claim 3, which is characterized in that each optical reflector
Part (1) constitutes the light scattering confocal excitation collection system around the focus (2) arrangement, and reserves laser light incident mouth.
6. light scattering confocal excitation collection system according to claim 5, which is characterized in that the light scattering confocal excitation
Collection system further includes incident light rays device, and the laser through laser light incident mouth incidence is converged by the incident light rays device
To the focus (2).
7. light scattering confocal excitation collection system according to claim 4, which is characterized in that further include source shifted reflections
Mirror has laser light incident mouth on the source shifted reflections mirror, and the end reflection optical device includes that focus is located at the coke
The transfer optics and terminal shifted reflections mirror of point (2), the transfer optics by transmission or reflection mode in the future
It is converted into directional light from the incident laser of the last one convergence optical reflective devices and is incident to the terminal shifted reflections mirror, it is described
Terminal shifted reflections mirror has horizontal-shift relative to the transfer optics, so that being incident on the terminal shifted reflections
The laser of mirror first position is emitted from the second position of the terminal shifted reflections mirror.
8. a kind of Raman spectrometer, which is characterized in that the Raman spectrometer includes described in any one of claim 1-7
Light scattering confocal excitation collection system.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019109772A1 (en) * | 2017-12-07 | 2019-06-13 | 深圳海纳光科技有限公司 | Light-scattering confocal excitation and collection system |
| CN110108692A (en) * | 2019-04-16 | 2019-08-09 | 徐州旭海光电科技有限公司 | Efficient light path folded device and Raman probe and system |
| CN113495359A (en) * | 2020-03-19 | 2021-10-12 | 中国科学院西安光学精密机械研究所 | Wide-spectrum common-path 3-D angle mirror zero-eliminating interferometer |
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2017
- 2017-12-07 CN CN201721690574.1U patent/CN207850923U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019109772A1 (en) * | 2017-12-07 | 2019-06-13 | 深圳海纳光科技有限公司 | Light-scattering confocal excitation and collection system |
| CN110108692A (en) * | 2019-04-16 | 2019-08-09 | 徐州旭海光电科技有限公司 | Efficient light path folded device and Raman probe and system |
| CN110108692B (en) * | 2019-04-16 | 2022-01-18 | 徐州旭海光电科技有限公司 | Efficient optical path folding device, Raman detector and system |
| CN113495359A (en) * | 2020-03-19 | 2021-10-12 | 中国科学院西安光学精密机械研究所 | Wide-spectrum common-path 3-D angle mirror zero-eliminating interferometer |
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