CN113552677B - Optical fiber transmitting port - Google Patents
Optical fiber transmitting port Download PDFInfo
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- CN113552677B CN113552677B CN202110854947.9A CN202110854947A CN113552677B CN 113552677 B CN113552677 B CN 113552677B CN 202110854947 A CN202110854947 A CN 202110854947A CN 113552677 B CN113552677 B CN 113552677B
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- cylindrical lens
- optical fiber
- light beam
- light
- axis
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
Abstract
The invention relates to the field of photoelectric sensors, and particularly provides an optical fiber emission port, wherein the emission port comprises: a fixed part; the first cylindrical lens is arranged on the fixing part and used for converting light rays on a Y axis, and the light ray exit end of the incident optical fiber is positioned at the focus of the first cylindrical lens; the second cylindrical lens is arranged on the light ray emergent side of the first cylindrical lens, and the axes of the first cylindrical lens and the second cylindrical lens are vertically arranged; the first axial expansion component is arranged on one side, far away from the first cylindrical lens, of the second cylindrical lens; according to the invention, the light emitted by the incident optical fiber is changed through the vertically arranged first cylindrical lens and the vertically arranged second cylindrical lens to form a rectangular light beam, so that the width and the divergence angle of the light beam emitted in the optical fiber system can be adjusted.
Description
Technical Field
The invention relates to the field of photoelectric sensors, in particular to an optical fiber transmitting port.
Background
When a general optical fiber system is converted into parallel light, the output port of the optical fiber is placed at the focal point of the lens, and the light output by the optical fiber is converged into parallel light beams by using the convex lens. For example, in chinese patent publication No. CN109443240A, the light beam passes through the lens 3 and then forms a parallel light beam, and the parallel light beam is emitted from the lens 3, so that a parallel light beam with a uniform light-emitting angle can be obtained, and the cross section of the light beam is the cross section of the lens, and is generally circular.
However, in some sensors, the cross-sectional shape of the light beam is generally rectangular, and the divergence angle is also required, specifically, in the plane perpendicular to the propagation direction of the light beam, there are two perpendicular directions, x and y directions, the divergence angle and the cross-sectional size are also independent, and the circular focusing lens cannot be designed. The present application thus proposes a fiber launch port.
Disclosure of Invention
The invention aims to provide an optical fiber emission port to solve the problem that the width and the divergence angle of a light beam emitted by the conventional optical fiber system cannot be adjusted.
In order to achieve the purpose, the invention provides the following technical scheme:
an optical fiber launch port for altering the cross-section of a light beam launched by said incident optical fiber, said launch port comprising:
a fixed part;
the first cylindrical lens is arranged on the fixing part and used for converting light rays on a Y axis, and the light ray exit end of the incident optical fiber is positioned at the focus of the first cylindrical lens;
the second cylindrical lens is arranged on the light emergent side of the first cylindrical lens, and the cylindrical axis of the first cylindrical lens and the cylindrical axis of the second cylindrical lens are vertically arranged;
the first axial expansion component is used for expanding the section length of a light beam emitted from the second cylindrical lens on an X1 axis, and the first axial expansion component is arranged on one side, far away from the first cylindrical lens, of the second cylindrical lens.
Furthermore, the fixing part is sleeved outside the first cylindrical lens and the second cylindrical lens and used for shielding external light.
Further, be provided with the reflection part on the first axial expansion subassembly, the reflection part includes:
the reflecting surfaces are arranged on the reflecting parts, and all the reflecting surfaces are not coplanar;
and the avoiding surface is arranged between the adjacent reflecting surfaces, and the avoiding surface and a light beam emitted by the second cylindrical lens have an included angle pointing to the inner side of the first axial expansion assembly and are used for avoiding light rays.
Further, the vertical distances between the adjacent reflecting surfaces are the same.
Further, the optical fiber launch port further comprises:
and the second axial expansion component is used for changing the cross section length of the light beam reflected from the first axial expansion component on the Y1 axis, and the second axial expansion component is positioned in the reflection direction of the first axial expansion component.
An optical fiber interface, comprising the above optical fiber launch port, further comprising:
a housing;
the optical fiber fixing part is fixedly connected in the shell and used for connecting the incident optical fiber, the first cylindrical lens is arranged at one end, far away from the incident optical fiber, of the optical fiber fixing part, and the light beam emitted by the incident optical fiber irradiates the first cylindrical lens;
the inner reflector is fixedly connected in the shell, an incident end is arranged on one side, close to the optical fiber fixing portion, of the inner reflector, an emergent end is arranged on one side, far away from the optical fiber fixing portion, of the inner reflector, and the second cylindrical lens is arranged on the incident end.
Further, be provided with between incident end and the exit end:
the reflecting end is used for changing the cross section of the light beam in the inner reflector, an avoiding surface and a reflecting surface are arranged on the reflecting end, and the avoiding surface protrudes towards the outer side of the inner reflector.
In conclusion, compared with the prior art, the invention has the following beneficial effects:
according to the invention, the light emitted by the incident optical fiber is changed through the vertically arranged first cylindrical lens and the vertically arranged second cylindrical lens to form a rectangular light beam, so that the width and the divergence angle of the light beam emitted by the optical fiber system can be adjusted, and the light emitted by the incident optical fiber can be completely received by a specific sensor.
The invention can further adjust the width and the length of the rectangular light beam.
Drawings
Fig. 1 is a schematic diagram of a fiber launch port provided by the present invention.
Fig. 2 is a schematic structural diagram of a first axial expansion component in the optical fiber launch port provided by the present invention.
Fig. 3 is a partial enlarged view of fig. 2 at I.
Fig. 4 is a schematic structural diagram of an optical fiber interface provided in the present invention.
Fig. 5 is a front view in full section of fig. 4.
Reference numerals: the optical fiber comprises 1-an incident optical fiber, 2-a first cylindrical lens, 3-a second cylindrical lens, 4-a first axial expansion component, 41-a reflection part, 42-an avoiding surface, 43-a reflection surface, 5-a second axial expansion component, 6-an optical fiber fixing part, 7-an internal reflection mirror, 71-an incident end, 72-a reflection end and 73-an emergent end.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
As shown in fig. 1, an optical fiber emission port provided for one embodiment of the present invention is used for changing a cross section of a light beam emitted from the incident optical fiber 1, and includes:
a fixing portion (not shown) for fixing the present invention to a light source while fixing the incident optical fiber 1;
the first cylindrical lens 2 is arranged in the fixed part and used for converting light rays on a Y axis, and the light ray outgoing end of the incident optical fiber 1 is positioned at the focus of the first cylindrical lens 2;
the second cylindrical lens 3 is arranged on the light emergent side of the first cylindrical lens 2, and the cylindrical surface of the first cylindrical lens 2 is perpendicular to the cylindrical surface axis of the second cylindrical lens 3;
in this embodiment, when the light emitted from the incident optical fiber 1 is irradiated onto the first cylindrical lens 2, refraction occurs on the first cylindrical lens 2, the irradiation direction of the light on the Y axis changes, and a parallel light beam on the Y axis is formed, when the light beam emitted from the first cylindrical lens 2 is irradiated onto the second cylindrical lens 3, the light beam is refracted on the second cylindrical lens 3, the irradiation direction of the light on the X axis changes, and a rectangular light beam is formed, so that the light beam emitted from the incident optical fiber 1 forms a desired rectangular light beam after refraction of the first cylindrical lens 2 and the second cylindrical lens 3;
in this embodiment, the fixing portion is sleeved outside the first cylindrical lens 2 and the second cylindrical lens 3, and the fixing portion is used for shielding external light and preventing the external light from affecting the light emitted by the incident optical fiber 1;
in some sensors, the received light beam is rectangular, and the light beam emitted by the light source is generally circular, in order to make the light beam emitted by the light source meet the requirements of the sensors, the light beam emitted by the light source needs to be changed, and since the cylindrical lenses have the function of changing the angle of the light beam in a certain axial direction, the light beam emitted by the incident optical fiber 1 is changed by the vertically arranged first cylindrical lens 2 and the second cylindrical lens 3 to form a rectangular light beam, so that the light beam emitted by the incident optical fiber 1 can be completely received by a specific sensor.
In one embodiment of the present invention, the transmission port further includes:
the first axial expansion component 4 is used for expanding the sectional length of a light beam emitted from the second cylindrical lens 3 on an X1 axis, and the first axial expansion component 4 is arranged on one side, far away from the incident optical fiber 1, of the second cylindrical lens 3;
as shown in fig. 2, in this embodiment, the first axial expansion component 4 is provided with a reflection part 41, after the light beam emitted from the second cylindrical lens 3 irradiates on the reflection part 41, the light beam is reflected on the reflection part 41, and after the light beam is reflected by the reflection part 41, the length of the cross section of the light beam emitted from the second cylindrical lens 3 on the axis X1 is elongated, so as to change the cross section of the light beam emitted from the second cylindrical lens 3, so that the light beam emitted from the optical fiber emission port provided by the present invention can meet the requirements of a specific sensor;
as shown in fig. 2, the reflection unit 41 includes:
a reflecting surface 43 provided on the reflecting portion 41, each of the reflecting surfaces 43 being not coplanar;
the avoidance surface 42 is arranged between the adjacent reflecting surfaces 43, and an included angle is formed between the avoidance surface 42 and a straight line where an optical axis of a light beam emitted by the second cylindrical lens 3 is located, so that the light beam is prevented from irradiating the avoidance surface 42;
in this embodiment, when the light beam emitted from the second cylindrical lens 3 is irradiated onto the reflecting surface 43, the light beam is reflected on the reflecting surface 43, and since each reflecting surface 43 is not coplanar, a gap exists between the light beams reflected on each reflecting surface 43, that is, each reflecting surface 43 divides the light beam emitted from the second cylindrical lens 3 into a plurality of groups of light beams, so as to change the cross section of the light beam emitted from the second cylindrical lens 3;
as a further explanation in the present embodiment, it is exemplified that a plurality of sets of first rectangular stripes are formed when the light beam reflected from the reflecting portion 41 is irradiated on a cross section perpendicular to the light beam, and a plurality of sets of second rectangular stripes are formed when the light beam emitted from the second cylindrical lens 3 is irradiated on a cross section perpendicular to the light beam, the length of the first rectangular stripes is the same as the length of the second rectangular stripes, and the sum of the widths of the first rectangular stripes is the same as the width of the second rectangular stripes;
as a further explanation in the present embodiment, it is exemplified that a plurality of sets of first rectangular stripes are formed when the light beam reflected from the reflecting portion 41 is irradiated on a cross section perpendicular to the light beam, and a plurality of sets of second rectangular stripes are formed when the light beam emitted from the second cylindrical lens 3 is irradiated on a cross section perpendicular to the light beam, the length of the first rectangular stripes is the same as the length of the second rectangular stripes, and the sum of the widths of the first rectangular stripes is the same as the width of the second rectangular stripes;
in this embodiment, the vertical distances between the adjacent reflecting surfaces 43 are the same.
As shown in fig. 1, in an embodiment of the present invention, the fiber launch port further includes:
a second axial expansion component 5 for changing the length of the cross section of the light beam reflected from the first axial expansion component 4 on the axis Y1, wherein the second axial expansion component 5 is located in the reflection direction of the first axial expansion component 4;
in this embodiment, the structure of the second axial expansion element 5 is the same as that of the first axial expansion element 4, and the description of the manner in which the second axial expansion element 5 changes the light beam reflected from the first axial expansion element 4 is omitted here.
As shown in fig. 4 and 5, the present invention also discloses an optical fiber interface, which includes:
a housing;
the optical fiber fixing part 6 is fixedly connected in the shell and is used for connecting the incident optical fiber 1, the first cylindrical lens 2 is arranged at one end, far away from the incident optical fiber 1, of the optical fiber fixing part 6, and light beams emitted by the incident optical fiber 1 irradiate on the first cylindrical lens 2;
an inner reflector 7 fixedly connected in the housing, wherein an incident end 71 is arranged on one side of the inner reflector 7 close to the optical fiber fixing part 6, an emergent end 73 is arranged on one side of the inner reflector 7 far away from the optical fiber fixing part 6, and the second cylindrical lens 3 is arranged on the incident end 71;
in this embodiment, the light beam emitted from the incident optical fiber 1 is irradiated to the first cylindrical lens 2 on the optical fiber fixing part 6, and is refracted by the first cylindrical lens 2 and the second cylindrical lens 3 to become a rectangular light beam on the second cylindrical lens 3 on the internal mirror 7, and then is emitted from the emission end 73;
in this embodiment, the housing functions as a light shielding portion, and the fiber fixing portion 6 is fixed in the housing by a stopper on the housing;
the optical fiber fixing part 6 is internally provided with a fixing hole, and the incident optical fiber 1 is fixedly connected to the optical fiber fixing part 6 in an adhesive or welding manner.
In an embodiment of the present invention, there are further provided between the incident end 71 and the exit end 73:
a reflecting end 72 for changing the cross section of the light beam in the inner mirror 7, wherein the reflecting end 72 is provided with an avoiding surface 42 and a reflecting surface 43, and the avoiding surface 42 protrudes to the outside of the inner mirror 7;
in this embodiment, the rectangular beam entering the internal reflector 7 is irradiated to the reflecting surface 43 on the reflecting end 72, and is reflected by the reflecting surface 43 to form a beam with a changed side length.
In the invention, the invention provides an optical fiber emission port, which comprises at least one first cylindrical lens 2 and at least one second cylindrical lens 3, wherein the first cylindrical lens 2 is used for transforming light rays on a Y axis, and the light ray exit end of an incident optical fiber 1 is positioned at the focus of the first cylindrical lens 2; the axis of the first cylindrical lens 2 and the axis of the second cylindrical lens 3 are vertically arranged for converting the light rays on the X axis;
in this embodiment, when the light emitted from the incident optical fiber 1 is irradiated onto the first cylindrical lens 2, the light is refracted at the first cylindrical lens 2, the irradiation direction of the light on the Y axis is changed, and a parallel light beam on the Y axis is formed, and when the light beam emitted from the first cylindrical lens 2 is irradiated onto the second cylindrical lens 3, the light beam is refracted at the second cylindrical lens 3, and the irradiation direction of the light on the X axis is changed, and a rectangular light beam is formed, so that the light beam emitted from the incident optical fiber 1 forms a desired rectangular light beam after being refracted at the first cylindrical lens 2 and the second cylindrical lens 3.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. An optical fiber launch port for varying the cross-section of a light beam launched from an incident optical fiber, said launch port comprising:
a fixed part;
the first cylindrical lens is arranged on the fixed part and used for converting light rays on the Y axis, and the light ray exit end of the incident optical fiber is positioned at the focus of the first cylindrical lens;
the second cylindrical lens is arranged on one side of the first cylindrical lens where the light rays exit, and the cylindrical axis of the first cylindrical lens and the cylindrical axis of the second cylindrical lens are vertically arranged;
the first axial expansion component is used for expanding the section length of a light beam emitted from the second cylindrical lens on an X1 axis, and the first axial expansion component is arranged on one side, far away from the first cylindrical lens, of the second cylindrical lens; wherein, be provided with the reflection part on the subassembly is extended to first axial, the reflection part includes:
the reflecting surfaces are arranged on the reflecting part and are all not coplanar;
locate adjacently dodge the face between the plane of reflection, dodge the face with the straight line in optical axis place of the light beam of second cylindrical lens outgoing has the contained angle for dodge light.
2. The fiber launch port of claim 1 wherein the securing portion is disposed outside the first and second cylindrical lenses for blocking external light.
3. The fiber launch port of claim 1 wherein the vertical distances between adjacent reflective surfaces are the same.
4. The fiber launch port of claim 1, further comprising:
and a second axial expansion component for changing the cross section length of the beam reflected from the first axial expansion component on the Y1 axis, wherein the second axial expansion component is positioned in the reflection direction of the first axial expansion component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110854947.9A CN113552677B (en) | 2021-07-28 | 2021-07-28 | Optical fiber transmitting port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110854947.9A CN113552677B (en) | 2021-07-28 | 2021-07-28 | Optical fiber transmitting port |
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| Publication Number | Publication Date |
|---|---|
| CN113552677A CN113552677A (en) | 2021-10-26 |
| CN113552677B true CN113552677B (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110854947.9A Active CN113552677B (en) | 2021-07-28 | 2021-07-28 | Optical fiber transmitting port |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042386A (en) * | 2019-03-29 | 2019-07-23 | 西北大学 | Semiconductor laser array strip light spots laser cladding apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2566292Y (en) * | 2002-09-03 | 2003-08-13 | 钱定榕 | Light beam distributor |
| DE102016102591A1 (en) * | 2016-02-15 | 2017-08-17 | Limo Patentverwaltung Gmbh & Co. Kg | Device for shaping laser radiation |
| CN111308680B (en) * | 2018-12-11 | 2022-09-30 | 深圳华大生命科学研究院 | Linear lighting device and gene sequencer |
| CN113946091A (en) * | 2020-07-15 | 2022-01-18 | 无锡视美乐激光显示科技有限公司 | Light source structure and projector |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042386A (en) * | 2019-03-29 | 2019-07-23 | 西北大学 | Semiconductor laser array strip light spots laser cladding apparatus |
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| CN113552677A (en) | 2021-10-26 |
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Address after: No. 1053, Huicheng Road, Huinan Town, Pudong New Area, Shanghai 201300 Applicant after: Shanghai sodilon Automation Co.,Ltd. Address before: No. 1053, Huicheng Road, Huinan Town, Pudong New Area, Shanghai 201300 Applicant before: SHANGHAI SODRON AUTOMATION CO.,LTD. |
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