CN209264573U - Couple light rays into the compact achromatism type light collector of optical fiber - Google Patents
Couple light rays into the compact achromatism type light collector of optical fiber Download PDFInfo
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- CN209264573U CN209264573U CN201822148492.5U CN201822148492U CN209264573U CN 209264573 U CN209264573 U CN 209264573U CN 201822148492 U CN201822148492 U CN 201822148492U CN 209264573 U CN209264573 U CN 209264573U
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Abstract
The utility model relates to a kind of compact achromatism type light collectors for coupling light rays into optical fiber；The light collector contains two Fresnel condenser lenses being sequentially arranged in lens barrel from front to back, two convex lenses, concavees lens and optical fiber interface, and the optical fiber at optical fiber interface rear portion is pierced by from lens barrel rear end；The outer diameter D 1 that Fresnel focuses is greater than the outer diameter D 2 of convex lens and concavees lens, the smooth surface of two Fresnel condenser lenses is oppositely arranged, the distance between optical center of second Fresnel condenser lens and third convex lens is equal to the sum of non-smooth surface focal length and front focal length of third convex lens of the second Fresnel condenser lens, the distance between light receiving surface center of the optical center of 4th convex lens and optical fiber interface is greater than the back focal length of the 4th convex lens, back focal length of the distance between the optical center of the optical center of the 4th convex lens and concavees lens less than the 4th convex lens；The utility model has the function of acquiring solid angle, compact-sized and elimination color difference greatly in the case where guaranteeing that light collects efficiency.
Description
(1), technical field:
The utility model relates to a kind of light collector, in particular to a kind of compact achromatism type for coupling light rays into optical fiber
Light collector.
(2), background technique:
LIBS(laser-induced breakdown spectroscopy, laser induced breakdown spectroscopy) it is a kind of atom
Emission Spectroscopy, it generates plasma using high intensity pulses laser ablation sample, is sent out by collection analysis plasma
Spectrum is penetrated, the type and content of element in sample is obtained.LIBS technology have can quickly detect, it is less or be not required to sample preparation,
The loss of lower sample, can online or in situ detection, the advantages that a variety of states of matters can be analyzed, be applied to biology more and more widely
The numerous areas such as medicine, metallurgy, environmental monitoring, Analysis of Cultural Relic identification, space probation and energy development.
When carrying out LIBS analysis, need to acquire plasma resonance light, and the radiant light is transmitted to spectrometer and is solved
Analysis analysis.In order to facilitate use, the form that existing spectrometer all takes optical fiber to input substantially is transmitted analyzed light by optical fiber
Enter spectrometer.This just needs plasma resonance optical coupling entering light fibre to need during optical coupling entering light is fine using lens
Optical path is converted；General focal length of lens hour, thickness is too big, strong to light absorption, lowers acquisition efficiency；The focal length of lens
When big, the optical path size of coupled into optical fibres is larger, be unfavorable for using；Also, due to convex lens meeting during to light focusing
Color difference is generated, the focus of different wave length light is caused not to be overlapped, when light coupling entering light fibre, the coupling of different wavelengths of light
Efficiency can generate difference, influence coupling effect.
(3), utility model content:
Technical problem to be solved by the utility model is: providing a kind of compact achromatism type light for coupling light rays into optical fiber
Collector, the light collector have big acquisition solid angle, compact-sized and elimination in the case where guaranteeing that light collects efficiency
The function of color difference.
The technical solution of the utility model includes:
A kind of compact achromatism type light collector coupling light rays into optical fiber contains the first Fresnel condenser lens, the
Two Fresnel condenser lenses, third convex lens, the 4th convex lens, concavees lens, optical fiber interface and lens barrel, the first Fresnel focus saturating
Mirror, the second Fresnel condenser lens, third convex lens, the 4th convex lens, concavees lens and optical fiber interface are successively installed from front to back
In lens barrel, the first Fresnel condenser lens, the second Fresnel condenser lens, third convex lens, the 4th convex lens and concavees lens
Primary optical axis be overlapped on a center line, and the central axis pass through optical fiber interface light receiving surface center, lens barrel
Front end it is open, the back-end closure of lens barrel, the back-connected optical fiber of optical fiber interface is pierced by from the rear end of lens barrel；First Fresnel is poly-
The outer diameter of focus lens and the second Fresnel condenser lens is D1, and the outer diameter of third convex lens, the 4th convex lens and concavees lens is equal
For D2, D1 is greater than D2, and the smooth surface of the smooth surface of the first Fresnel condenser lens and the second Fresnel condenser lens is oppositely arranged, and second
The distance between optical center and the optical center of third convex lens of Fresnel condenser lens are equal to the non-light of the second Fresnel condenser lens
The sum of the focal length and the focal length before third convex lens in face, in the optical center of the 4th convex lens and the light receiving surface of optical fiber interface
The distance between heart be greater than the 4th convex lens subsequent focal length, between the optical center of the 4th convex lens and the optical center of concavees lens away from
It is being injected before the 4th convex lens successively to be passed through with centerline parallel light from the subsequent focal length less than the 4th convex lens
It crosses after the 4th convex lens and concavees lens and converges in the light receiving surface center of optical fiber interface.
Third convex lens and the 4th convex lens are plano-convex lens, and concavees lens are plano-concave lens, the plane of third convex lens
It is oppositely arranged with the convex surface of the 4th convex lens, the plane of the 4th convex lens and the plane of concavees lens are oppositely arranged, the second Fresnel
The distance between optical center and the optical center of third convex lens of condenser lens are equal to the coke of the non-smooth surface of the second Fresnel condenser lens
Away from the sum of the focal length on convex surface with third convex lens, between the optical center of the 4th convex lens and the light receiving surface center of optical fiber interface
Distance be greater than the 4th convex lens plane focal length, the distance between optical center and the optical center of concavees lens of the 4th convex lens are less than
The focal length of the plane of 4th convex lens.
D1 is greater than twice of D2.
The internal diameter of lens barrel and the first Fresnel condenser lens, the second Fresnel condenser lens, third convex lens, the 4th convex lens
The matching of the outer diameter of mirror and concavees lens.
The material of lens barrel is opaque-plastic or aluminium alloy.
The back seat of optical fiber interface is mounted in the through-hole of lens barrel rear end face, and optical fiber is pierced by by back seat from the rear end of lens barrel.
Since Fresnel condenser lens (the first Fresnel condenser lens and the second Fresnel condenser lens) is significantly thinner than together
The ordinary lens of focal length ensure that the suction that light collector reduces lens body to light in the case where heavy caliber and small focal length
It receives, while small focal length in turn ensures the compact of light collector structure；Use heavy caliber Fresnel condenser lens as object lens, can make
More light enter light collector, are converged using small-bore convex lens (third convex lens and the 4th convex lens) to light,
Shrink beam processing is carried out again, improves the efficiency of coupled into optical fibres.
When acquiring plasma resonance light using the light collector, so that collected light source is located at the first Fresnel and focus thoroughly
The focal point of the non-smooth surface of mirror, in this way, the light that collected light source issues has been reformed into after the first Fresnel condenser lens and put down
Row light, the directional light are then converged in the focal point of third convex lens by the second Fresnel condenser lens, then through third convex lens
Become directional light to enter in the 4th convex lens, the light that optical fiber interface is successively converged in after the 4th convex lens and concavees lens connects
It at the center of receipts face, is sent out finally by optical fiber, to realize the acquisition of light.
The utility model has the beneficial effects that
1, the utility model is using two Fresnel condenser lenses, two convex lenses and a concavees lens as light chopper
Element, Fresnel condenser lens can be lesser simultaneously in the focal length of lens, greatly reduces the thickness of lens, reduce lens Jie
The absorption of confrontation light ensure that the efficiency that light is collected；Moreover, because the focal length of Fresnel condenser lens is smaller, can adopt greatly
The longitudinal size of the utility model is reduced in the case where collecting solid angle (big clear aperture), the outer diameter of two convex lenses is smaller, contracting
The small lateral dimension of light beam, conducive to the aperture of adaptation optical fiber interface；The utility model is by the lens for collecting light and couples light
Optical fiber interface is integrated in a lens barrel, in the case where guaranteeing that light collects efficiency, while having big acquisition solid angle, structure tight
The function of gathering, improves collecting efficiency.
2, the concavees lens of the utility model can correct color difference caused by convex lens, to eliminate color difference, make not
The light of co-wavelength can be well in coupled into optical fibres, and coupling effect is good.
(4), Detailed description of the invention:
Fig. 1 is the structural schematic diagram for coupling light rays into the compact achromatism type light collector of optical fiber；
Fig. 2 is the light path schematic diagram for coupling light rays into the compact achromatism type light collector of optical fiber.
(5), specific embodiment:
Referring to FIG. 1 to FIG. 2, in figure, the compact achromatism type light collector for coupling light rays into optical fiber contains the first luxuriant and rich with fragrance alunite
That condenser lens 1, the second Fresnel condenser lens 2, third convex lens 3, the 4th convex lens 4, concavees lens 9, optical fiber interface 5 and mirror
Cylinder 6, the first Fresnel condenser lens 1, the second Fresnel condenser lens 2, third convex lens 3, the 4th convex lens 4,9 and of concavees lens
Optical fiber interface 5 is sequentially arranged at from front to back in lens barrel 6, the first Fresnel condenser lens 1, the second Fresnel condenser lens 2,
The primary optical axis of three convex lenses 3, the 4th convex lens 4 and concavees lens 9 is overlapped on one article of center line OO ', and center line OO ' hangs down
Direct puncture crosses the light receiving surface center of optical fiber interface 5, and the front end of lens barrel 6 is open, the back-end closure of lens barrel 6,5 rear portion of optical fiber interface
The optical fiber 7 of connection is pierced by from the rear end of lens barrel 6；The outer diameter of first Fresnel condenser lens 1 and the second Fresnel condenser lens 2 is equal
Outer diameter for D1, third convex lens 3, the 4th convex lens 4 and concavees lens 9 is D2, and D1 is greater than twice of D2, and the first Fresnel is poly-
The smooth surface of focus lens 1 and the smooth surface of the second Fresnel condenser lens 2 are oppositely arranged, and third convex lens 3 and the 4th convex lens 4 are
Plano-convex lens, concavees lens 9 are plano-concave lens, and the convex surface of the plane of third convex lens 3 and the 4th convex lens 4 is oppositely arranged, the 4th
The plane of convex lens 4 and the plane of concavees lens 9 are oppositely arranged, the optical center of the second Fresnel condenser lens 2 and third convex lens 3
The distance between optical center is equal to the focal length of the focal length of the non-smooth surface of the second Fresnel condenser lens 2 and the convex surface of third convex lens 3
The sum of, the distance between the optical center of the 4th convex lens 4 and the light receiving surface center of optical fiber interface 5 are greater than the 4th convex lens 4
The plane of the distance between optical center of the focal length of plane, the optical center of the 4th convex lens 4 and concavees lens 9 less than the 4th convex lens 4
Focal length, the light parallel with center line OO ' injected before the 4th convex lens 4 successively pass through the 4th convex lens 4 and recessed
The light receiving surface center of optical fiber interface 5 is converged in after mirror 9.
The internal diameter of lens barrel 6 and the first Fresnel condenser lens 1, the second Fresnel condenser lens 2, third convex lens the 3, the 4th
The matching of the outer diameter of convex lens 4 and concavees lens 9.
The material of lens barrel is opaque-plastic.
The back seat of optical fiber interface 5 is mounted in the through-hole of 6 rear end face of lens barrel, and optical fiber 7 is worn by back seat from the rear end of lens barrel 6
Out.
Since Fresnel condenser lens (the first Fresnel condenser lens 1 and the second Fresnel condenser lens 2) is significantly thinner than
With the ordinary lens of focal length, the suction that light collector reduces lens body to light in the case where heavy caliber and small focal length ensure that
It receives, while small focal length in turn ensures the compact of light collector structure；Use heavy caliber Fresnel condenser lens as object lens, can make
More light enter light collector, are converged using small-bore convex lens (third convex lens 3 and the 4th convex lens 4) to light
It is poly-, then shrink beam processing is carried out, improve the efficiency of coupled into optical fibres.
When acquiring plasma resonance light using the light collector, collected light source 8 is first made to be located at the focusing of the first Fresnel
The focal point of the non-smooth surface of lens 1, in this way, the light that collected light source 8 issues reforms into after the first Fresnel condenser lens 1
Directional light, the directional light are then converged in the focal point of third convex lens 3 by the second Fresnel condenser lens 2, then through third
Convex lens 3 becomes directional light and enters in the 4th convex lens 4, successively converges in optical fiber after the 4th convex lens 4 and concavees lens 9 and connects
At the light receiving surface center of mouth 5, sent out finally by optical fiber 7, to realize the acquisition of light.
Claims (6)
1. a kind of compact achromatism type light collector for coupling light rays into optical fiber, it is characterized in that: being focused containing the first Fresnel
Lens, the second Fresnel condenser lens, third convex lens, the 4th convex lens, concavees lens, optical fiber interface and lens barrel, the first luxuriant and rich with fragrance alunite
That condenser lens, the second Fresnel condenser lens, third convex lens, the 4th convex lens, concavees lens and optical fiber interface are from front to back
It is sequentially arranged in lens barrel, the first Fresnel condenser lens, the second Fresnel condenser lens, third convex lens, the 4th convex lens
It is overlapped on a center line with the primary optical axis of concavees lens, and the central axis passes through in the light receiving surface of optical fiber interface
The front end of the heart, lens barrel is open, and the back-end closure of lens barrel, the back-connected optical fiber of optical fiber interface is pierced by from the rear end of lens barrel；First
The outer diameter of Fresnel condenser lens and the second Fresnel condenser lens is D1, third convex lens, the 4th convex lens and concavees lens
Outer diameter be D2, D1 is greater than D2, and the smooth surface of the smooth surface of the first Fresnel condenser lens and the second Fresnel condenser lens is opposite
Setting, the distance between optical center and the optical center of third convex lens of the second Fresnel condenser lens are equal to the second Fresnel and focus thoroughly
The sum of focal length and the focal length before third convex lens of the non-smooth surface of mirror, the optical center of the 4th convex lens and the light of optical fiber interface
The distance between receiving plane center is greater than the subsequent focal length of the 4th convex lens, the optical center of the 4th convex lens and the optical center of concavees lens
The distance between less than the 4th convex lens subsequent focal length, the light with centerline parallel injected before the 4th convex lens
Line successively converges in the light receiving surface center of optical fiber interface after the 4th convex lens and concavees lens.
2. the compact achromatism type light collector according to claim 1 for coupling light rays into optical fiber, it is characterized in that: described
Third convex lens and the 4th convex lens are plano-convex lens, and concavees lens are plano-concave lens, the plane of third convex lens and the 4th convex
The convex surface of lens is oppositely arranged, and the plane of the 4th convex lens and the plane of concavees lens are oppositely arranged, the second Fresnel condenser lens
Optical center and third convex lens the distance between optical center be equal to the second Fresnel condenser lens non-smooth surface focal length and third
The distance between light receiving surface center of the sum of focal length on convex surface of convex lens, the optical center of the 4th convex lens and optical fiber interface is big
In the focal length of the plane of the 4th convex lens, the distance between optical center of the optical center of the 4th convex lens and concavees lens is less than the 4th convex lens
The focal length of the plane of mirror.
3. the compact achromatism type light collector according to claim 1 for coupling light rays into optical fiber, it is characterized in that: described
D1 is greater than twice of D2.
4. the compact achromatism type light collector according to claim 1 for coupling light rays into optical fiber, it is characterized in that: described
The internal diameter of lens barrel and the first Fresnel condenser lens, the second Fresnel condenser lens, third convex lens, the 4th convex lens and recessed
The outer diameter of mirror matches.
5. the compact achromatism type light collector according to claim 1 for coupling light rays into optical fiber, it is characterized in that: described
The material of lens barrel is opaque-plastic or aluminium alloy.
6. the compact achromatism type light collector according to claim 1 for coupling light rays into optical fiber, it is characterized in that: described
The back seat of optical fiber interface is mounted in the through-hole of lens barrel rear end face, and optical fiber is pierced by by back seat from the rear end of lens barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822148492.5U CN209264573U (en) | 2018-12-21 | 2018-12-21 | Couple light rays into the compact achromatism type light collector of optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822148492.5U CN209264573U (en) | 2018-12-21 | 2018-12-21 | Couple light rays into the compact achromatism type light collector of optical fiber |
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| Publication Number | Publication Date |
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| CN209264573U true CN209264573U (en) | 2019-08-16 |
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|---|---|---|---|
| CN201822148492.5U Withdrawn - After Issue CN209264573U (en) | 2018-12-21 | 2018-12-21 | Couple light rays into the compact achromatism type light collector of optical fiber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444113A (en) * | 2018-12-21 | 2019-03-08 | 平顶山学院 | Couple light rays into the compact achromatism type light collector of optical fiber |
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2018
- 2018-12-21 CN CN201822148492.5U patent/CN209264573U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444113A (en) * | 2018-12-21 | 2019-03-08 | 平顶山学院 | Couple light rays into the compact achromatism type light collector of optical fiber |
| CN109444113B (en) * | 2018-12-21 | 2023-08-22 | 平顶山学院 | Compact achromatic light collector for coupling light into optical fiber |
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| GR01 | Patent grant | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190816 Effective date of abandoning: 20230822 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190816 Effective date of abandoning: 20230822 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |