CN215867376U - Focusing shaping device for optical fiber emergent laser - Google Patents
Focusing shaping device for optical fiber emergent laser Download PDFInfo
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- CN215867376U CN215867376U CN202122114650.7U CN202122114650U CN215867376U CN 215867376 U CN215867376 U CN 215867376U CN 202122114650 U CN202122114650 U CN 202122114650U CN 215867376 U CN215867376 U CN 215867376U
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- optical fiber
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- prism
- dimensional adjusting
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- 238000007493 shaping process Methods 0.000 title claims abstract description 41
- 239000013307 optical fiber Substances 0.000 title claims abstract description 33
- 238000013519 translation Methods 0.000 claims abstract description 21
- 239000000835 fiber Substances 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 3
- 238000001819 mass spectrum Methods 0.000 description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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Abstract
The utility model discloses a focusing and shaping device for fiber emergent laser, which comprises a lens cone, an extension cylinder, a telescopic cylinder and a two-dimensional adjusting frame which are sequentially connected, wherein the two-dimensional adjusting frame is connected with the telescopic cylinder through a translation seat which is covered outside the two-dimensional adjusting frame; the two-dimensional adjusting frame is characterized in that a front lens group is arranged inside one end, close to the extension cylinder, of the lens barrel, a rear lens group is arranged at the other end of the lens barrel, an optical fiber interface is formed at one end face, far away from the telescopic cylinder, of the two-dimensional adjusting frame, and the optical fiber interface extends out of the translation seat. The method is applied to shaping the discrete light spots emitted by the multimode optical fiber with the large numerical aperture of 0.22 and the large core diameter of 910 mu m, realizes effective shaping and focusing on the discrete light spots with the total divergence angle of about 17 degrees, provides convenience for application of the laser emitted by the optical fiber, and widens a convenient and feasible way for laser transmission.
Description
Technical Field
The utility model belongs to the field of laser shaping devices, and particularly relates to a focusing shaping device for fiber emergent laser.
Background
In the existing experiment, the laser transmission modes mainly comprise two modes, namely space transmission and optical fiber transmission, and have advantages and disadvantages respectively. The space transmission has the advantages that the good beam quality characteristic of laser can be kept, the limitation of a laser power threshold value is avoided, the transmission efficiency is high, and the directivity is good; the defects of the method are obvious, the occupied space of a transmission path is large, the energy distribution of light spots is uneven, and the long-distance transmission is greatly influenced by airflow disturbance. The optical fiber transmission mode has the advantages of flexible transmission path, uniform light spot center power distribution and strong light spot transmission stability; its disadvantages are also evident, the transmission power threshold is low, the beam quality of the laser is obviously poor and the directivity is very poor. Compared with two transmission modes of laser, the two transmission modes have the advantages and the disadvantages, and different laser transmission modes are required to be selected under different application conditions aiming at the characteristics and cannot be replaced mutually.
Aiming at an optical fiber transmission mode, in order to be matched with the application of the discrete light spot emitted by the optical fiber, the light spot energy needs to be effectively converged, and meanwhile, under the condition of slight loss of laser power, the uniformity of the energy distribution of the discrete light spot is ensured to be unchanged, so that an optical fiber light-emitting shaping device needs to be matched for use.
However, the shaping device applied to the conventional optical fiber having a large core diameter and a high numerical aperture has a poor shaping effect, and mainly shows large focal aberration, a large focal size (about 7 mm), non-uniform laser focal power distribution, a small focal length (about 500 mm), a low transmittance due to a large number of combined lens pieces (8 lenses), and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a focusing and shaping device for fiber emergent laser, and further solve and improve the application problem of fiber emergent discrete light spots.
The utility model is realized by the following technical scheme:
a focusing shaping device for fiber emergent laser comprises a lens cone, an extension cylinder, a telescopic cylinder and a two-dimensional adjusting frame which are connected in sequence, wherein the two-dimensional adjusting frame is connected with the telescopic cylinder through a translation seat which is covered outside the two-dimensional adjusting frame; a front lens group is arranged inside one end of the lens cone close to the extension cylinder, and a rear lens group is arranged at the other end of the lens cone; and an end face of one end of the two-dimensional adjusting frame, which is far away from the telescopic cylinder, forms an optical fiber interface, and the optical fiber interface extends out of the translation seat.
In the above technical scheme, the front lens group comprises a prism I and a prism II which are connected with each other, and the rear lens group comprises a prism III and a prism IV which are connected with each other.
In the above technical solution, the diameter of the front lens group is smaller than that of the rear lens group.
In the technical scheme, the prism I is glued with the prism II, and the prism III is glued with the prism IV.
In the above technical scheme, the inner wall of the lens barrel forms a groove corresponding to the positions of the front lens group and the rear lens group respectively.
In the above technical scheme, the front lens group and the rear lens group are respectively fixed in the grooves of the inner walls of the corresponding lens barrels through the small positioning nuts and the large positioning nuts.
In the above technical scheme, the two-dimensional adjusting frame is in clearance fit with the translation seat.
In the technical scheme, the outer circumferential wall and the end face of the translation seat are respectively provided with the radial adjusting bolt and the axial adjusting bolt, and the radial adjusting bolt and the axial adjusting bolt extend into the translation seat and are in contact with the two-dimensional adjusting frame.
In the above technical scheme, the extension cylinder and the lens barrel, the extension cylinder and the telescopic cylinder, and the telescopic cylinder and the translation seat are all fixed by screws.
In the above technical scheme, a scale is arranged outside the telescopic cylinder.
The utility model has the beneficial effects that:
the utility model provides a focusing and shaping device for fiber emergent laser, which is applied to shaping discrete spots of a multimode fiber emergent with a large numerical aperture of 0.22 and a large core diameter of 910 mu m, realizes effective shaping and focusing on the discrete spots with a total divergence angle of about 17 degrees, provides convenience for application of the fiber emergent laser, and widens a convenient and feasible way for laser transmission.
Drawings
Fig. 1 is a schematic structural diagram of a focusing and shaping device for fiber outgoing laser according to the present invention.
Wherein:
1 lens cone 2 two-dimensional adjusting frame
3 telescopic cylinder 4 translation seat
5 optical fiber interface 6 extension cylinder
No. 7I prism and No. 8 II prism
No. 9 III prism and No. 10 IV prism
11 big positioning nut and 12 small positioning nut
13 radial adjusting bolt 14 axial adjusting bolt.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions of the present invention for the focusing and shaping device for the fiber outgoing laser light are further described below by referring to the drawings of the specification and the specific embodiments.
As shown in fig. 1, a focusing and shaping device for fiber laser emission comprises a lens barrel 1, an extension cylinder 6, a telescopic cylinder 3 and a two-dimensional adjusting frame 2 which are connected in sequence, wherein the two-dimensional adjusting frame 2 is connected with the telescopic cylinder 3 through a translation seat 4 which is covered outside the two-dimensional adjusting frame; a front lens group is arranged inside one end of the lens cone 1 close to the extension cylinder 6, and a rear lens group is arranged at the other end of the lens cone; the two-dimensional adjusting frame 2 is far away from one end face of the telescopic cylinder 3 to form an optical fiber interface 5, and the optical fiber interface 5 extends out of the translation seat 4.
Grooves are respectively formed on the inner wall of the lens cone 1 at positions corresponding to the front lens group and the rear lens group, and the front lens group is fixed in the corresponding groove on the inner wall of the lens cone 1 through a small positioning nut 12; the rear lens group is fixed in the groove of the inner wall of the corresponding lens barrel 1 through a large positioning nut 11.
The extension cylinder 6 and the lens barrel 1, the extension cylinder 6 and the telescopic cylinder 3, and the telescopic cylinder 3 and the translation seat 4 are fixed through screws.
Preceding battery of lens is including adopting sticky mode veneer No. I prism 7 and No. II prism 8, back battery of lens is including adopting sticky mode veneer No. III prism 9 and No. IV prism 10, and preceding battery of lens external diameter is 50.8mm, and back battery of lens external diameter is 74.0mm, and the interval of two sets of lens groups is 94.7 mm.
The two-dimensional adjusting frame 2 is in clearance fit with the translation seat 4, the outer circumferential wall and the end face of the translation seat 4 are respectively provided with a radial adjusting bolt 13 and an axial adjusting bolt 14, and the radial adjusting bolt 13 and the axial adjusting bolt 14 both extend into the translation seat 4 and are in contact with the two-dimensional adjusting frame 2. The emergent direction of the shaping light spot can be adjusted in the vertical dimension and the left dimension and the right dimension respectively through the radial adjusting bolt 13 and the axial adjusting bolt 14, the adjusting range is limited, and the laser shaping light spot trimming device is mainly suitable for fine adjustment operation in the using process.
The outside of the telescopic cylinder 3 is provided with a scale, and the telescopic structure of the telescopic cylinder is similar to the structure of a camera lens. The size of the shaping light spot and the corresponding focal length can be adjusted by rotating the telescopic cylinder 3 with the ruler, and the adjusting range is as follows: the telescopic cylinder is completely stretched, the diameter of a focus spot is 3.2mm at the minimum, and the focal length is 500 mm; the telescopic cylinder is completely compressed, the diameter of a focus light spot is 4mm at the minimum, and the focal length is 660 mm.
The optical fiber interface 5 is an SMA905 type optical fiber interface and is used for connecting an optical fiber with the core diameter of 910 um.
Extension section of thick bamboo 6 passes through the fix with screw with lens cone 1, and the length of extension section of thick bamboo 6 influences the size and the focus of shaping device plastic facula, and to different experimental conditions, the user can be according to the length of self demand independently selection extension section of thick bamboo, and the length selection direction of extension section of thick bamboo is: the longer the extension cylinder is, the smaller the focal spot size is, and the shorter the focal length is; the shorter the extension cylinder, the larger the focal spot size and the longer the focal length.
Through the test of a beam quality analyzer, the power distribution curve of the light spot near the focus is a platform, the good power distribution characteristic is obtained, and the good shaping performance of the shaping lens barrel is verified.
The utility model is designed and manufactured according to the experimental requirements of a mass spectrum system, is suitable for the light-emitting shaping of an optical fiber with the core diameter of 910um, and transmits the light separated from a laser system to an atomization region through the optical fiber. In a laser action area of a mass spectrum atomic furnace, an atomization system has strict requirements on the power distribution and the power density of laser spots, wherein the power distribution requirement is uniform, namely the condition that the power distribution is different greatly does not exist; the power density has a specific value, so that the smaller the focal spot, the lower the power value requirement of the laser. The lower the laser power value used for monitoring the mass spectrum system on line, the lower the light splitting proportion of the laser system, the shaping light spot size of the shaping device is below 4mm, compared with the 7mm shaping light spot of the existing shaping device, under the condition of the same power density requirement, the requirement of the laser power value is reduced by nearly 70 percent, thus effectively reducing the laser power load and being also suitable for the space size of an atomic action area. Meanwhile, in a laser action area of the atomization system, the laser power distribution has a great influence on the intensity of ion signals of the mass spectrum system and has a great influence on accurate analysis and detection of mass spectrum signals, so that the improved shaping device has good power distribution characteristics of shaping light spots, and the accuracy of mass spectrum signal analysis results is effectively improved.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. A focusing shaping device for fiber outgoing laser is characterized in that: the device comprises a lens cone (1), an extension cylinder (6), a telescopic cylinder (3) and a two-dimensional adjusting frame (2) which are sequentially connected, wherein the two-dimensional adjusting frame (2) is connected with the telescopic cylinder (3) through a translation seat (4) which is covered outside the two-dimensional adjusting frame; a front lens group is arranged inside one end of the lens cone (1) close to the extension cylinder (6), and a rear lens group is arranged at the other end of the lens cone; the end face, far away from the telescopic cylinder (3), of one end of the two-dimensional adjusting frame (2) forms an optical fiber interface (5), and the optical fiber interface (5) extends out of the translation seat (4).
2. The focus shaping apparatus for an optical fiber outgoing laser according to claim 1, wherein: the front lens group comprises a prism I (7) and a prism II (8) which are connected with each other, and the rear lens group comprises a prism III (9) and a prism IV (10) which are connected with each other.
3. The focus shaping apparatus for an optical fiber outgoing laser according to claim 2, wherein: the diameter of the front lens group is smaller than that of the rear lens group.
4. The focus shaping apparatus for an optical fiber outgoing laser according to claim 3, wherein: the prism I (7) is glued with the prism II (8), and the prism III (9) is glued with the prism IV (10).
5. The focus shaping apparatus for an optical fiber outgoing laser according to claim 1, wherein: and grooves are respectively formed on the inner wall of the lens cone (1) corresponding to the positions of the front lens group and the rear lens group.
6. The focus shaping apparatus for an optical fiber outgoing laser according to claim 5, wherein: the front lens group and the rear lens group are respectively fixed in the grooves of the inner wall of the corresponding lens cone (1) through a small positioning nut (12) and a large positioning nut (11).
7. The focus shaping apparatus for an optical fiber outgoing laser according to claim 1, wherein: the two-dimensional adjusting frame (2) is in clearance fit with the translation seat (4).
8. The focus shaping apparatus for an optical fiber outgoing laser according to claim 7, wherein: the outer circumferential wall and the end face of the translation seat (4) are respectively provided with a radial adjusting bolt (13) and an axial adjusting bolt (14), and the radial adjusting bolt (13) and the axial adjusting bolt (14) both extend into the translation seat (4) and are in contact with the two-dimensional adjusting frame (2).
9. The focus shaping apparatus for an optical fiber outgoing laser according to claim 1, wherein: the extension cylinder (6) and the lens barrel (1), the extension cylinder (6) and the telescopic cylinder (3) and the translation seat (4) are fixed through screws.
10. The focus shaping apparatus for an optical fiber outgoing laser according to claim 1, wherein: and a scale is arranged outside the telescopic cylinder (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122114650.7U CN215867376U (en) | 2021-09-03 | 2021-09-03 | Focusing shaping device for optical fiber emergent laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122114650.7U CN215867376U (en) | 2021-09-03 | 2021-09-03 | Focusing shaping device for optical fiber emergent laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215867376U true CN215867376U (en) | 2022-02-18 |
Family
ID=80245288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122114650.7U Expired - Fee Related CN215867376U (en) | 2021-09-03 | 2021-09-03 | Focusing shaping device for optical fiber emergent laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215867376U (en) |
-
2021
- 2021-09-03 CN CN202122114650.7U patent/CN215867376U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220218 |