CN205750139U - A kind of multiple beam coupling device and detection air chamber - Google Patents
A kind of multiple beam coupling device and detection air chamber Download PDFInfo
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- CN205750139U CN205750139U CN201620418110.4U CN201620418110U CN205750139U CN 205750139 U CN205750139 U CN 205750139U CN 201620418110 U CN201620418110 U CN 201620418110U CN 205750139 U CN205750139 U CN 205750139U
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- concave mirror
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Abstract
The utility model discloses a kind of multiple beam coupling device, coupling for light beam, including opposing parallel the first coaxially arranged concave mirror and the second concave mirror, the reflecting surface of the first concave mirror and the reflecting surface forward of the second concave mirror are relative, the radius of curvature of the first concave mirror is less than the radius of curvature of the second concave mirror, the focus of the first concave mirror coincides with the focus of the second concave mirror, the reflecting surface front of the second concave mirror is provided with light source launch point, light source launch point is for launching the reflecting surface to the second concave mirror by beam orthogonal to be coupled, the center of the second concave mirror is provided with light hole, light hole light beam current after coupling.This utility model additionally provides a kind of detection air chamber.This utility model can be effectively improved the quantity of coupled light beam, greatly meets the needs of many kinds of substance detection, and simple in construction is easy for installation, with low cost.
Description
Technical field
This utility model relates to spectral measurement methods field, more specifically, particularly to one
Multiple beam coupling device and detection air chamber.
Background technology
TDLAS refers to tunable diode laser absorption spectroscopy, is Tunable Diode Laser
The abbreviation of Absorption Spectroscopy, this technology is mainly by tunable semiconductor laser
The narrow linewidth of device and wavelength with the characteristic that injection current changes realize to molecule single or several away from
The most indistinguishable close Absorption Line measures.TDLAS technology is a kind of high selectivity, height
The spectral technique of resolution, due to " fingerprint " feature of molecular spectrum, it is not by other gas
Interference.TDLAS technology is a kind of to have the activist of absorption the most effective to all infrared
Current techique, same instrument can measure the instrument of other component the most instead, it is only necessary to
Change laser instrument and Standard Gases.Additionally, TDLAS technology has speed soon, highly sensitive is excellent
Point.In the case of the most malfunctioning sensitivity, its temporal resolution can be in ms magnitude.Therefore,
TDLAS technology is widely used in molecular spectrum research, Industrial Process Monitoring controls, combustion process
In diagnostic analysis, engine efficiency and motor-vehicle tail-gas measurement, spark-test, air, trace is dirty
In the fields such as dye gas-monitoring.
In TDLAS technology, a kind of laser instrument can only detect a kind of material (seldom under normal circumstances
Number can detect two kinds), in order to enable to detect the concentration of many kinds of substance simultaneously, need different
The light beam that laser instrument sends couples.Existing light beam coupling mode is a lot, but exists or many
Or few deficiency, such as, in the device that Application No. 201510981524.8 patent provides, make
Carry out primary contracting bundle with pyramid corner angle, be then passed through two pieces of parabolic mirrors and carry out two grades
Contracting bundle, this device serves certain coupling, but there is also significantly multiple laser
Deficiency, the gold tower corner angle of this device provide four reflectings surface and a centre bore, at most
Can only couple about five light beams, coupled light beam limited amount, it is impossible to adapt to many kinds of substance detection
Needs；Additionally, the method structure is more disperseed the most more complicated, installation process is relatively complicated,
And it is with high costs.
Utility model content
The technical problems to be solved in the utility model is for providing a kind of multiple beam coupling device, and these are many
Light beam coupling device is designed by its structure, can be effectively improved the quantity of coupled light beam, the fullest
The needs of foot many kinds of substance detection, and simple in construction, easy for installation, with low cost.
A kind of multiple beam coupling device, for the coupling of light beam, including opposing parallel coaxially arranged
The first concave mirror and the second concave mirror, the reflecting surface of described first concave mirror
Relative with the reflecting surface forward of described second concave mirror, the song of described first concave mirror
Rate radius is less than the radius of curvature of described second concave mirror, described first concave mirror
Focus coincides with the focus of described second concave mirror, described second concave mirror anti-
In face of penetrating, side is provided with light source launch point, and described light source launch point is for by beam orthogonal to be coupled
Launch the reflecting surface to described second concave mirror, the center of described second concave mirror
It is provided with light hole, described light hole light beam current after coupling.
Preferably, described first concave mirror and described second concave mirror are paraboloidal
Concave mirror.
Preferably, described first concave mirror is that spheric is recessed with described second concave mirror
Face reflecting mirror.
Preferably, described light source launch point is arranged on described first concave mirror outer rim with described
Annular region and described light source launch point between second concave mirror outer rim are positioned at described first
The back of concave mirror.
Preferably, described first concave mirror is smaller in size than described second concave mirror size.
Preferably, the back of described second concave mirror is provided with condenser lens, described focusing
Lens are arranged on the axis of described second concave mirror, and described condenser lens is for through going out
The focusing of the coupled light beam of unthreaded hole.
Preferably, the focal point of described condenser lens is provided with detector, and described detector is used for
The detection of coupled light beam.
Preferably, the center of described first concave mirror is provided with light well, described in enter light
The diameter of the light hole that the diameter in hole is arranged less than described second concave mirror center, described
Described light source launch point it is also equipped with at light well.
This utility model additionally provides a kind of detection air chamber, is provided with above-mentioned in described detection air chamber
Multiple beam coupling device described in any one.
The beneficial effects of the utility model are:
The multiple beam coupling device that this utility model provides is designed by its structure, can be effectively improved
The quantity of coupled light beam, greatly meets the needs of many kinds of substance detection, and simple in construction, peace
Dress is convenient, with low cost.
The material contained in detection air chamber can effectively be become by the detection air chamber that this utility model provides
Point concentration detects, simultaneously because detection light beam multiple reflections in detection air chamber, effectively
Add the effective light path during measurement, be greatly enhanced the detection limit of measured matter.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art,
The accompanying drawing used required in embodiment or description of the prior art will be briefly described below,
It should be evident that the accompanying drawing in describing below is only embodiment of the present utility model, for this
From the point of view of the those of ordinary skill of field, on the premise of not paying creative work, it is also possible to according to
The accompanying drawing provided obtains other accompanying drawing.
Fig. 1 and Fig. 2 is that the structure of 1 one kinds of multiple beam coupling devices of this utility model embodiment is shown
It is intended to；
Fig. 3 is the structural representation of 2 one kinds of multiple beam coupling devices of this utility model embodiment；
Fig. 4 is the structural representation that this utility model embodiment 3 one kinds detects air chamber.
Detailed description of the invention
For the technical scheme making those skilled in the art be more fully understood that in the application, below
The accompanying drawing in the embodiment of the present application will be combined, the technical scheme in the embodiment of the present application will be carried out clearly
Chu, it is fully described by, it is clear that described embodiment is only some embodiments of the present application,
Rather than whole embodiments.
Based on the embodiment in the application, those of ordinary skill in the art are not making creativeness
The every other embodiment obtained under work premise, all should belong to the scope of the application protection.
Embodiment 1:
See Fig. 1 and Fig. 2, Fig. 1 and Fig. 2 and provide the coupling of this utility model one multiple beam
The specific embodiment of device, wherein, Fig. 1 and Fig. 2 is that this utility model embodiment is more than 1 one kinds
The structural representation of light beam coupling device.
As depicted in figs. 1 and 2, this utility model embodiment 1 provides a kind of multiple beam coupling
Device, for the coupling of light beam, including opposing parallel the first coaxially arranged concave mirror 1
With the second concave mirror 2, the first concave mirror 1 is used to the second concave mirror 2
The reflection of light beam.
The reflecting surface of the first concave mirror 1 and the reflecting surface forward phase of the second concave mirror 2
Right, the radius of curvature of the first concave mirror 1 is less than the radius of curvature of the second concave mirror 2,
The focus of the first concave mirror 1 coincides with the focus of the second concave mirror 2, and second is recessed
The front of face reflecting mirror 2 reflecting surface is provided with light source launch point 3, and light source launch point 3 is used for treating
The transmitting of coupled light beam, the center of the second concave mirror 2 is provided with light hole 4, goes out light
Hole 4 light beam current after coupling.
In specific implementation process, the light beam to be coupled that light source launch point 3 sends is collimated vertically
The reflecting surface of directive the second concave mirror 2, normal beam is anti-through the second concave mirror 2
Penetrate after face is reflected on the reflecting surface that overfocus reflexes to the first concave mirror 1, the first concave surface
The reflecting surface of reflecting mirror 1 and beam orthogonal is reflexed to the reflection of the second concave mirror 2
On face, the most back and forth, reflex to the vertical light of the reflecting surface of the second concave mirror 2 every time
Can progressively center to the second concave mirror 2 draw close, until by the second concave mirror 2
The light hole 4 that center is arranged penetrates.
In the scheme that this utility model provides, the quantity of light source launch point 3 can be according to detection need
Increasing and decreasing, only need to ensure to be launched by beam orthogonal to the second concave mirror 2 is anti-
Penetrate on face, and the light beam that light source launch point 3 sends the most all concentrates on the second concave reflection
Parallel injection in the light hole 4 that mirror 2 center is arranged, it is achieved thereby that the coupling of multiple beam.
In this programme, the order of reflection of light beam and the change of light path can be by using different curvature
First concave mirror 1 of radius and the second concave mirror 2 combine or adjust light source and launch
Point 3 realizes from the distance of the second concave mirror 2 axis.
Additionally, the multiple beam coupling device that this utility model provides only has only to provide position to set
Count the first special concave mirror 1 and 2 two pieces of reflecting optics of the second concave mirror, then close
Removing the work puts the position of light source launch point 3, finally sets out light at the second concave mirror 2 center
Hole 4, it is possible to realize the coupling of multiple beam, greatly meets the needs of many kinds of substance detection, and
And simple in construction, easy for installation, with low cost.
In the present embodiment, for the most preferably realizing the reflection of light beam, the first concave mirror
1 and second concave mirror 2 be preferably paraboloidal concave mirror.
Certainly, for this utility model, the first concave mirror 1 and the second concave mirror
2 can also elect spheric concave mirror as.
Certainly, for this utility model, the first concave mirror 1 and the second concave mirror
2 can also one piece select paraboloidal concave mirror, other one piece select spheric concave surface anti-
Penetrate mirror.
In the present embodiment, for being preferably easy to the transmitting of light beam to be coupled, light source launch point 3 sets
Put the annular region between the first concave mirror 1 outer rim and the second concave mirror 2 outer rim
And light source launch point 3 is positioned at the back of the first concave mirror 1, wherein, the first concave reflection
Mirror 1 is smaller in size than the second concave mirror size 2.
Certainly, position light source launch point 3 arranged, it is also possible to be arranged on the first concave reflection
Between mirror 1 and the second concave mirror 2, it is also possible on the mirror body of the first concave mirror 1
Aperture is set, then light source launch point 3 is arranged at above-mentioned aperture.Light source launch point 3
Position is specifically set, not affect the transmitting of light beam and light beam at the first concave mirror 1 and the
Reflection between two concave mirrors 2 is as the criterion.Certainly, the first concave mirror 1 size also may be used
With not less than the second concave mirror size 2, only the light beam that light source launch point 3 is launched need to be ensured
The most vertically it is mapped on the reflecting surface of the second concave mirror size 2.
In the present embodiment, for convenience of the focusing of coupled light beam, the back of the second concave mirror 2
Being provided with condenser lens 5, condenser lens 5 is arranged on the axis of the second concave mirror 2,
Condenser lens 5 is for the focusing of the coupled light beam through light hole 4.
In the present embodiment, for convenience of the detection of coupled light beam, the focal point of condenser lens 5 is arranged
Having detector 6, detector 6 is for the detection of coupled light beam.
Embodiment 2:
See Fig. 3, Fig. 3 and provide the another kind of this utility model a kind of multiple beam coupling device
Specific embodiment, wherein, Fig. 3 is 2 one kinds of multiple beam coupling devices of this utility model embodiment
Structural representation.
For increase further can with the quantity of coupled light beam, this utility model additionally provide following this
Plant embodiment.
In the present embodiment, the center of the first concave mirror 1 is provided with light well 7, enters light
The diameter of the light hole 4 that the diameter in hole 7 is arranged less than the second concave mirror 2 center, enters
Light source launch point 3 it is also equipped with at unthreaded hole 7.
In being embodied as, the diameter of light well 7 should ensure that the light that light source launch point 3 sends
Bundle can pass through completely, and the light beam after simultaneously should preventing multiple reflections overflows from light well 7；Go out light
The diameter in hole 7 should ensure that the light beam of coupling can penetrate completely.
So, the region that light source launch point 3 can be arranged is expanded further, at light well 7
The light beam to be coupled that the light source launch point 3 arranged is launched can directly pass through light well 7, enters
Zone line between first concave mirror 1 and the second concave mirror 2, then passes through
Unthreaded hole 4 directly penetrates, and significantly improves the quantity of this device coupled light beam.
Embodiment 3:
See Fig. 4, Fig. 4 and provide the specific embodiment of a kind of light of this utility model detection air chamber,
Wherein, Fig. 4 is the structural representation that this utility model embodiment 3 one kinds detects air chamber.
This utility model additionally provides a kind of detection air chamber, is provided with above-mentioned in detection air chamber 8
Anticipate a described multiple beam coupling device.
In the present embodiment, the multiple beam coupling device described in above-mentioned any one scheme can be direct
It is arranged on the inner chamber of detection air chamber 8, is used for loading material to be detected in detection air chamber 8.
The detection air chamber 8 that this utility model provides can be effectively to the material contained in detection air chamber
Constituent concentration detects, and the light beam that light source launch point 3 is launched can be at the first concave mirror
1 and second multiple reflections between concave mirror 2, so, effectively increases measurement process
In effective light path, be greatly enhanced the detection limit of measured matter.
Above a kind of multiple beam coupling device provided by the utility model and detection air chamber are carried out
It is discussed in detail.Specific case used herein is to principle of the present utility model and embodiment
Being set forth, the explanation of above example is only intended to help to understand method of the present utility model
And core concept.It should be pointed out that, for those skilled in the art,
On the premise of this utility model principle, it is also possible to this utility model is carried out some improvement
And modification, these improve and modification also falls in this utility model scope of the claims.
Claims (9)
1. a multiple beam coupling device, coupling for light beam, it is characterized in that, including opposing parallel the first coaxially arranged concave mirror and the second concave mirror, the reflecting surface of described first concave mirror is relative with the reflecting surface forward of described second concave mirror, the radius of curvature of described first concave mirror is less than the radius of curvature of described second concave mirror, the focus of described first concave mirror coincides with the focus of described second concave mirror, the reflecting surface front of described second concave mirror is provided with light source launch point, described light source launch point is for launching the reflecting surface to described second concave mirror by beam orthogonal to be coupled, the center of described second concave mirror is provided with light hole, described light hole light beam current after coupling.
Multiple beam coupling device the most according to claim 1, it is characterised in that described first concave mirror and described second concave mirror are paraboloidal concave mirror.
Multiple beam coupling device the most according to claim 1, it is characterised in that described first concave mirror and described second concave mirror are spheric concave mirror.
Multiple beam coupling device the most according to claim 1, it is characterized in that, described light source launch point is arranged on the annular region between described first concave mirror outer rim and described second concave mirror outer rim and described light source launch point is positioned at the back of described first concave mirror.
Multiple beam coupling device the most according to claim 4, it is characterised in that described first concave mirror is smaller in size than described second concave mirror size.
Multiple beam coupling device the most according to claim 1, it is characterized in that, the back of described second concave mirror is provided with condenser lens, and described condenser lens is arranged on the axis of described second concave mirror, and described condenser lens is for the focusing of the coupled light beam through light hole.
Multiple beam coupling device the most according to claim 6, it is characterised in that the focal point of described condenser lens is provided with detector, described detector is for the detection of coupled light beam.
Multiple beam coupling device the most according to claim 1, it is characterized in that, the center of described first concave mirror is provided with light well, the diameter of the light hole that the diameter of described light well is arranged less than described second concave mirror center, is also equipped with described light source launch point at described light well.
9. a detection air chamber, it is characterised in that be provided with claim 1 in described detection air chamber to the multiple beam coupling device described in claim 8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620418110.4U CN205750139U (en) | 2016-05-10 | 2016-05-10 | A kind of multiple beam coupling device and detection air chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620418110.4U CN205750139U (en) | 2016-05-10 | 2016-05-10 | A kind of multiple beam coupling device and detection air chamber |
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| CN205750139U true CN205750139U (en) | 2016-11-30 |
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| CN201620418110.4U Active CN205750139U (en) | 2016-05-10 | 2016-05-10 | A kind of multiple beam coupling device and detection air chamber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105739104A (en) * | 2016-05-10 | 2016-07-06 | 力合科技（湖南）股份有限公司 | Multi-beam coupling device and detection air chamber |
| WO2020088210A1 (en) * | 2018-10-31 | 2020-05-07 | 上海禾赛光电科技有限公司 | Laser gas detection device |
-
2016
- 2016-05-10 CN CN201620418110.4U patent/CN205750139U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105739104A (en) * | 2016-05-10 | 2016-07-06 | 力合科技（湖南）股份有限公司 | Multi-beam coupling device and detection air chamber |
| WO2020088210A1 (en) * | 2018-10-31 | 2020-05-07 | 上海禾赛光电科技有限公司 | Laser gas detection device |
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