CN212207742U - Light beam coupling device - Google Patents
Light beam coupling device Download PDFInfo
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- CN212207742U CN212207742U CN202020722700.2U CN202020722700U CN212207742U CN 212207742 U CN212207742 U CN 212207742U CN 202020722700 U CN202020722700 U CN 202020722700U CN 212207742 U CN212207742 U CN 212207742U
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Abstract
The utility model relates to the technical field of laser application, and discloses a light beam coupling device, which comprises a fixed sleeve, an optical fiber interface, a lens cone and a coupling lens which are coaxially arranged, wherein the optical fiber interface is arranged at the first end of the fixed sleeve, and the lens cone is adjustably arranged in the fixed sleeve; the device also comprises a water cooling structure and/or an elastic pre-tightening structure; the water cooling structure is arranged on the side wall of the lens cone; one end of the lens cone, which is far away from the optical fiber interface, is connected with the second end of the fixed sleeve through an elastic pre-tightening structure; the utility model discloses not only eliminated the coupling lens through water-cooling structure and because of overheated deformation to the influence of beam coupling, still reduced the assembly error of device by a wide margin through elasticity pretension structure to can guarantee the reliability of beam coupling based on photosensitive element to the real time monitoring of beam coupling state, effectively prevented to cause the damage to transmission optical fiber because of the positional deviation of focus facula when high-power laser continuous output.
Description
Technical Field
The utility model relates to a laser application technology field especially relates to a light beam coupling device.
Background
In the multi-light path transmission system, collimated light beams are coupled by a light beam coupling device, enter different transmission optical fibers and then reach a processing position, so that laser transmitted in space is coupled and transmitted in the optical fibers. Compared with a direct output laser, the beam coupling device transmits energy through a flexible integrated optical fiber, and is easier to operate and apply.
The coupling principle of the beam coupling device to the laser beam is to focus the collimated beam in the range of the fiber core of the end face of the transmission fiber, so that the beam coupling device mainly comprises a fixing sleeve, a fiber interface, a lens barrel and a coupling lens which are coaxially arranged, wherein the fiber interface is installed at one end of the fixing sleeve, the coupling lens is installed in the lens barrel, and the lens barrel is adjustably installed in the fixing sleeve.
At present, the light beam coupling device on the market is usually a natural cooling structure, in a low-power transmission system, the laser power density is low, the transmission optical fiber is not damaged due to the position deviation of a focusing light spot caused by processing and assembling errors, in a high-power system, besides the processing and assembling errors, along with the continuous output of high-power laser, the coupling lens can generate great temperature rise, the position deviation of the focusing light spot can be caused by the deformation of the coupling lens caused by absorbing excessive heat, the reliability of light beam coupling is greatly influenced, and the optical fiber damage can be caused.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a light beam coupling device for solve the assembly error that current light beam coupling device exists at least or the deformation that the coupling lens arouses because of overheated all can cause the problem of influence to the reliability of light beam coupling.
In order to solve the above technical problem, an embodiment of the present invention provides a light beam coupling device, including a fixing sleeve, an optical fiber interface, a lens barrel and a coupling lens, which are coaxially arranged, wherein the optical fiber interface is installed at a first end of the fixing sleeve, and the lens barrel is adjustably installed in the fixing sleeve; further comprising: a water cooling structure and/or an elastic pre-tightening structure; the water cooling structure is arranged on the side wall of the lens barrel; and one end of the lens cone, which is far away from the optical fiber interface, is connected with the second end of the fixed sleeve through the elastic pre-tightening structure.
The lens barrel comprises a first lens barrel section far away from the optical fiber interface, the water cooling structure comprises a cooling flow channel arranged on the outer side wall of the first lens barrel section, the coupling lens is installed in the first lens barrel section, a cooling sleeve used for sealing the cooling flow channel is sleeved on the outer side wall of the first lens barrel section, and the outer side wall of the cooling sleeve is in sliding connection with the inner side wall of the fixing sleeve; the elastic pre-tightening structure comprises a pre-tightening spring, one end of the cooling sleeve and one end of the first lens cone section, which is far away from the optical fiber interface, are abutted to one end of the pre-tightening spring together, and the other end of the pre-tightening spring is abutted to the second end of the fixing sleeve.
And a photosensitive element is also arranged in the fixed sleeve and is close to one end of the optical fiber interface, which faces the lens barrel.
The middle part of the fixed sleeve is rotated and rotated with a rotating component which is coaxially arranged with the fixed sleeve, the lens barrel comprises a second lens barrel section which is close to the optical fiber interface, and the rotating component is in threaded connection with the outer side wall of the second lens barrel section.
The cooling sleeve and one end of the first lens cone section, which is far away from the optical fiber interface, are provided with an annular clamping groove, the annular clamping groove is arranged along the axial direction of the lens cone, one end of the pre-tightening spring extends into the annular clamping groove, the other end of the pre-tightening spring is abutted to an annular adjusting component, and the annular adjusting component is in threaded connection with the second end of the fixed sleeve.
The fixed sleeve comprises a first fixed sleeve and a second fixed sleeve which are coaxially connected; the rotating component comprises an adjusting helicoid, the adjusting helicoid is rotatably arranged between the first fixing sleeve and the second fixing sleeve, and the adjusting helicoid is in threaded connection with the outer side wall of the second lens barrel section; the optical fiber interface is installed in the first fixed sleeve, and the inner side wall of the second fixed sleeve is connected with the outer side wall of the cooling sleeve in a sliding mode.
The second fixing sleeve is provided with a first window, the outer side wall of the cooling sleeve is provided with scale marks which are distributed along the axial direction of the cooling sleeve, and the scale marks correspond to the first window.
The second window is formed in the second fixing sleeve, a water inlet connector and a water outlet connector are arranged on the outer side wall of the cooling sleeve, the water inlet connector is communicated with one end of the cooling flow channel, the other end of the cooling flow channel is communicated with the water outlet connector, and the water inlet connector and the water outlet connector correspond to the second window respectively.
The cooling device comprises a first lens barrel section, a second lens barrel section and a cooling sleeve, wherein a first sealing structure and a second sealing structure are arranged between two ends of the first lens barrel section and the inner side wall of the cooling sleeve, the cooling flow channel is located between the first sealing structure and the second sealing structure, and the shape of the cooling flow channel comprises a snake shape.
The embodiment of the utility model provides an in above-mentioned one or more technical scheme, one of following technological effect has at least:
the embodiment of the utility model provides a light beam coupling device, through the water-cooling structure of setting on the lateral wall of lens cone, effectively prevent when high-power laser continuous output, the coupling lens arouses the position deviation that leads to the focus facula because of absorbing too much heat, and simultaneously, still can be based on the pretightning force that elasticity pretension structure provided to the lens cone, accurately adjust the lens cone to predetermineeing the position, so that the position of focus facula accurately concentrates on the terminal surface of transmission optic fibre, thereby the assembly error that coupling device exists has been reduced effectively, the reliability of light beam coupling has been ensured, can further prevent to cause the damage to transmission optic fibre because of the positional deviation of focus facula when high-power laser continuous output.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic plan sectional structural view of a light beam coupling device according to an embodiment of the present invention;
fig. 2 is a schematic perspective sectional structural view of a light beam coupling device according to an embodiment of the present invention;
fig. 3 is a schematic perspective view of a light beam coupling device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a light beam coupling device for coupling light beams according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a lens barrel according to an embodiment of the present invention;
fig. 6 is a schematic plan view of a cooling flow passage according to an embodiment of the present invention;
fig. 7 is a flowchart of a coupling method based on a light beam coupling device according to an embodiment of the present invention.
In the figure, 1, a first fixed sleeve; 2. a second fixed sleeve; 3. adjusting the spiral coil; 4. an optical fiber interface; 5. a transmission optical fiber; 6. a lens barrel; 61. a first barrel section; 62. a second barrel section; 7. a coupling lens; 8. a cooling flow channel; 9. cooling the sleeve; 10. a first seal structure; 11. a second seal structure; 12. pre-tightening the spring; 13. an annular adjustment member; 14. a photosensitive element; 15. a first window; 16. a second window; 17. a water inlet joint; 18. and a water outlet joint.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally 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 in specific cases to those skilled in the art.
Referring to fig. 1 to 3, the present embodiment provides a light beam coupling device, including a fixing sleeve, an optical fiber interface 4, a lens barrel 6 and a coupling lens 7, which are coaxially arranged, wherein the optical fiber interface 4 is installed at a first end of the fixing sleeve, the lens barrel 6 is adjustably installed in the fixing sleeve, and the coupling lens 7 is installed in the lens barrel 6; the device also comprises a water cooling structure and/or an elastic pre-tightening structure; the water cooling structure is arranged on the side wall of the lens barrel 6; one end of the lens cone 6, which is far away from the optical fiber interface 4, is connected with the second end of the fixed sleeve through an elastic pre-tightening structure.
Specifically, the light beam coupling device shown in this embodiment, through the water cooling structure disposed on the sidewall of the lens barrel 6, can realize indirect cooling of the coupling lens 7 based on water cooling of the lens barrel 6 by the water cooling structure, and effectively prevent the deviation of the position of the focusing spot caused by deformation of the coupling lens 7 due to excessive heat absorption when the high-power laser is continuously output, and meanwhile, the lens barrel 6 can be accurately adjusted to the preset position based on the pretightening force provided by the elastic pretightening structure to the lens barrel 6, so that the position of the focusing spot is accurately concentrated on the end surface of the transmission optical fiber 5, thereby effectively reducing the assembly error of the coupling device, ensuring the reliability of light beam coupling, and further preventing the transmission optical fiber 5 from being damaged due to the position deviation of the focusing spot when the high-power laser is continuously output.
It should be noted that the water cooling structure is used for being connected with an external water cooling device, the water cooling device may be a water cooling machine known in the art, and the cooling water is introduced into the water cooling structure to cool the side wall of the lens barrel 6, so that the coupling lens 7 in the lens barrel 6 can be kept at an appropriate temperature based on the conduction effect of the lens barrel 6 on the cooling capacity of the cooling water, and the deviation of the position of the focused light spot caused by the deformation of the coupling lens 7 due to the absorption of excessive heat when the laser light continuously output by the high-power laser light is coupled is effectively prevented, where the water cooling structure may be understood as a sandwich structure or a flow channel structure known in the art for heat exchange of the cooling water, and is not particularly limited.
Meanwhile, for the existing light beam coupling device, currently, when the axial position of the lens barrel relative to the fixed sleeve is adjusted to focus the laser spot, the lens barrel often cannot be adjusted to the preset position due to the existence of assembly errors, so that the elastic pre-tightening structure is further designed on the basis of the water-cooling structure in the embodiment, the lens barrel 6 can be accurately adjusted to the preset position based on the pre-tightening force provided by the elastic pre-tightening structure to the lens barrel 6, so that the position of the focused spot is accurately concentrated on the end face of the transmission optical fiber, and therefore the combined regulation and control effect of the water-cooling structure and the elastic pre-tightening structure on the focused spot is integrated in the embodiment, and the reliability of light beam coupling is powerfully ensured; the elastic pretensioning structure may be understood as a spring, an elastic plate, etc., which are known in the art and can directionally provide pretensioning force, and is not limited in this respect.
In addition, the coupling lens 7 is a lens group, and the lens group may be formed by at least one of a spherical lens and an aspheric lens arranged along the same axial direction.
Preferably, as shown in fig. 1 and fig. 5, the lens barrel 6 in this embodiment includes a first lens barrel section 61 far away from the optical fiber interface 4, the water cooling structure includes a cooling channel 8 formed on an outer side wall of the first lens barrel section 61, the coupling lens 7 is installed in the first lens barrel section 61, a cooling sleeve 9 for sealing the cooling channel 8 is sleeved on the outer side wall of the first lens barrel section 61, and an outer side wall of the cooling sleeve 9 is slidably connected with an inner side wall of the fixing sleeve; the elastic pre-tightening structure comprises a pre-tightening spring 12, one end of the cooling sleeve 9 and one end of the first lens barrel section 61, which is far away from the optical fiber interface 4, are abutted to one end of the pre-tightening spring 12 together, and the other end of the pre-tightening spring 12 is abutted to the second end of the fixing sleeve.
Specifically, in the present embodiment, the coupling lens 7 is installed in the first lens barrel section 61, and the cooling water circulating in the cooling channel 8 directly cools the first lens barrel section 61, so that the cooling capacity can be quickly conducted to the coupling lens 7 under the heat conduction action of the first lens barrel section 61, thereby effectively preventing the deviation of the position of the focusing spot caused by the deformation of the coupling lens 7 due to the absorption of too much heat during the continuous output of the high-power laser. Wherein, set up cooling channel 8 on first lens section 61 lateral wall, can be convenient for process, and do not occupy too much exterior space.
As shown in fig. 1, in one preferred embodiment, a first sealing structure 10 and a second sealing structure 11 may be disposed between two ends of the first lens barrel section 61 and an inner side wall of the cooling sleeve 9, such that the first lens barrel section 61, the cooling sleeve 9, the first sealing structure 10 and the second sealing structure 11 define a sealed cavity, and when the cooling flow channel 8 is disposed between the first sealing structure 10 and the second sealing structure 11, the cooling water flowing in the cooling flow channel 8 can be effectively prevented from flowing out of the sealed cavity. The first sealing structure 10 and the second sealing structure 11 have the same structure and include an annular sealing groove and an annular sealing ring, the annular sealing groove is disposed on the outer side wall of the first lens barrel section 61, and the annular sealing ring is embedded in the annular sealing groove and is used for sealing the inner side wall of the cooling sleeve 9 in a contact manner.
As shown in fig. 5 and 6, in order to facilitate the processing of the cooling flow passage 8 and to facilitate the cooling flow passage 8 to be well distributed in each region on the side wall of the first barrel section 61, the arrangement shape of the cooling flow passage 8 may preferably be a serpentine shape, so that the uniformity of the temperature distribution in each region on the side wall of the first barrel section 61 is also ensured accordingly.
Meanwhile, the pre-tightening spring has good deformation characteristic and self-recovery property, can keep good coaxiality with the lens barrel 6, and does not influence the transmission of light beams in the lens barrel 6, so that the elastic pre-tightening structure is preferably the pre-tightening spring 12 in the embodiment. In addition, since the cooling sleeve 9 is sleeved on the outer side wall of the first lens barrel section 61, in order to facilitate the lens barrel 6 to move relative to the fixed sleeve, effective water cooling is also performed on the lens barrel 6, so that when one end of the cooling sleeve 9 and one end of the first lens barrel section 61, which are far away from the optical fiber interface 4, are abutted to one end of the pre-tightening spring 12 together, the other end of the pre-tightening spring 12 is abutted to the second end of the fixed sleeve.
As shown in fig. 1, in another preferred embodiment, a cooling sleeve 9 may be further provided, and an annular clamping groove is formed in an end of the first lens barrel section 61 away from the optical fiber interface 4, the annular clamping groove is arranged along the axial direction of the lens barrel 6, one end of the pre-tightening spring 12 extends into the annular clamping groove, the other end of the pre-tightening spring abuts against the annular adjusting member 13, and the annular adjusting member 13 is in threaded connection with a second end of the fixing sleeve.
Therefore, by designing the ring-shaped clamping groove, the pre-tightening spring 12 can be ensured to be stably elastically deformed under the limitation of the ring-shaped clamping groove, and the elastic force of the pre-tightening spring 12 can be further adjusted based on the ring-shaped adjusting member 13, so that the thread clearance which appears when the position of the lens barrel 6 is adjusted in a thread manner as shown in the following embodiment can be effectively eliminated, the accuracy of adjusting the coupling lens 7 is correspondingly improved, and the stability of the coupling lens 7 is ensured.
Preferably, as shown in fig. 4, a photosensitive element 14 is further installed in the fixing sleeve in this embodiment, and the photosensitive element 14 is close to an end of the optical fiber interface 4 facing the lens barrel 6, wherein the photosensitive element 14 may be a photodiode known in the art.
Specifically, in operation, the transmission fiber 5 is inserted into the fiber interface 4, and an end face of the transmission fiber 5 slightly protrudes from the fiber interface 4 toward one end of the lens barrel 6. When the light beam is coupled, the laser light beam enters the lens barrel 6 from the second end of the fixed sleeve, the coupling lens 7 in the lens barrel 6 focuses the laser light beam, when the focused light spot is too large and exceeds the diameter of the fiber core of the transmission fiber 5, or the focused light spot deviates from the center of the fiber, the focused light spot exceeds the range of the fiber core and enters the cladding region, strong scattered light is generated on the end face of the transmission fiber 5, so that the light signal can be sensed by the photosensitive element 14 and transmitted to the control system, and the control system can monitor the coupling state of the laser light beam in real time based on the signal collected by the photosensitive element 14.
Preferably, as shown in fig. 1, in the embodiment, the middle part of the fixing sleeve is rotated and rotated with a rotating member coaxially arranged therewith, the lens barrel 6 includes a second barrel section 62 close to the optical fiber interface 4, and the rotating member is in threaded connection with the outer side wall of the second barrel section 62.
Specifically, since the rotating member is threadedly connected to the outer sidewall of the second barrel section 62, when the rotating member is rotated, the barrel 6 can be stably moved relative to the fixed sleeve and toward the first end or the second end thereof, thereby facilitating the position adjustment of the focused light spot passing through the coupling lens 7, and the adjustment is simple and convenient in operation, and the coaxiality is high. In order to ensure the stability of the axial movement of the lens barrel 6 with respect to the fixed sleeve, a guide structure may be provided between the lens barrel 6 and the fixed sleeve in the axial direction.
As shown in fig. 1 and 2, in one of the preferred embodiments, there may be further provided that the fixed sleeve includes a first fixed sleeve 1 and a second fixed sleeve 2 coaxially connected; the rotating component comprises an adjusting helicoid 3, the adjusting helicoid 3 is rotatably arranged between the first fixing sleeve 1 and the second fixing sleeve 2, and the adjusting helicoid 3 is in threaded connection with the outer side wall of the second lens barrel section 62; the optical fiber interface 4 is installed in the first fixed sleeve 1, and the inner side wall of the second fixed sleeve 2 is connected with the outer side wall of the cooling sleeve 9 in a sliding mode.
Preferably, as shown in fig. 1, in this embodiment, the second fixing sleeve 2 is provided with a first window 15, and the outer side wall of the cooling sleeve 9 is provided with scale marks arranged along the axial direction thereof, where the scale marks correspond to the first window 15.
Specifically, in the embodiment, the position of the focusing spot is correspondingly adjusted based on the adjustment of the position of the lens barrel 6, and when the lens barrel 6 moves, the cooling sleeve 9 moves along with the lens barrel, so that scale marks can be arranged on the outer side wall of the cooling sleeve 9, and the moving distance of the lens barrel 6 is accurately controlled in real time by observing the change of the scales on the scale marks in the first window 15, so that the accurate adjustment of the position of the focusing spot is correspondingly achieved.
Preferably, as shown in fig. 3, a second window 16 is formed on the second fixing sleeve 2, a water inlet joint 17 and a water outlet joint 18 are installed on an outer side wall of the cooling sleeve 9, wherein the water inlet joint 17 and the water outlet joint 18 are both arranged along a radial direction of the cooling sleeve 9, the water inlet joint 17 is communicated with one end of the cooling flow channel 8, the other end of the cooling flow channel 8 is communicated with the water outlet joint 18, and the water inlet joint 17 and the water outlet joint 18 correspond to the second window 16 respectively.
Specifically, the second window 16 shown in this embodiment is used as a relief port, so that the water inlet connector 17 and the water outlet connector 18 can be directly mounted on the outer side wall of the cooling sleeve 9. For the cooling flow channel 8, the row form on the side wall of the first lens barrel section 61 may be a serpentine shape as shown in fig. 6, so that when the water inlet joint 17 is communicated with one end of the cooling flow channel 8 and the other end of the cooling flow channel 8 is communicated with the water outlet joint 18, the water inlet joint 17, the cooling flow channel 8 and the water outlet joint 18 can respectively form a closed loop communication with an external circulation pipeline and a water cooling device, so as to input the cooling water circulating in the cooling flow channel 8 and realize the continuous water cooling effect on the lens barrel 6.
Preferably, as shown in fig. 7, the present embodiment further provides a coupling method based on the light beam coupling apparatus, including: s1, inserting a transmission optical fiber in the optical fiber interface, and connecting the water cooling structure with a water cooling device; and S2, enabling the laser beam to enter the lens barrel from the second end of the fixed sleeve, and adjusting the axial position of the lens barrel relative to the fixed sleeve based on the optical signal which is acquired by the photosensitive element in real time and is scattered on the end face of the transmission optical fiber through the focusing light spot of the coupling lens until the focusing light spot is positioned in the end face of the transmission optical fiber and is coincided with the fiber core of the transmission optical fiber.
Specifically, in the coupling method provided in this embodiment, when coupling the laser beam, the transmission optical fiber is inserted into the optical fiber interface, the end surface of the transmission optical fiber is disposed toward one side of the lens barrel and corresponds to the photosensitive element in the radial direction, and the water cooling structure is connected to the water cooling device through the circulation pipeline to form a cooling water circulation system, so as to ensure that the lens barrel is cooled by the cooling water that circulates, thereby achieving indirect cooling of the coupling lens.
Then, based on the optical signal scattered by the coupling lens through the focusing spot on the end surface of the transmission optical fiber acquired by the photosensitive element in real time, the axial position of the lens barrel relative to the fixed sleeve is adjusted, namely the position of the coupling lens through the coupling lens on the end surface of the transmission optical fiber is adjusted until the focusing spot is positioned in the end surface of the transmission optical fiber and is superposed with the fiber core of the transmission optical fiber, so that the accurate adjustment of the coupling state of the laser beam is achieved, and on the basis of ensuring that the coupling lens is not deformed due to overheating, the position of the coupled focusing spot is always positioned in the end surface of the transmission optical fiber and is superposed with the fiber core of the transmission optical fiber based on the pre-tightening effect of the elastic pre-tightening structure, and the coupling state of the focusing spot can be monitored by the photosensitive element in real time, so that the transmission optical fiber is.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A light beam coupling device comprises a fixing sleeve, an optical fiber interface, a lens cone and a coupling lens which are coaxially arranged, wherein the optical fiber interface is installed at the first end of the fixing sleeve, and the lens cone is adjustably installed in the fixing sleeve; it is characterized by also comprising: a water cooling structure and/or an elastic pre-tightening structure; the water cooling structure is arranged on the side wall of the lens barrel; and one end of the lens cone, which is far away from the optical fiber interface, is connected with the second end of the fixed sleeve through the elastic pre-tightening structure.
2. The beam coupling device according to claim 1, wherein the lens barrel includes a first barrel section far away from the optical fiber interface, the water-cooling structure includes a cooling channel provided on an outer side wall of the first barrel section, the coupling lens is installed in the first barrel section, a cooling sleeve for sealing the cooling channel is sleeved on the outer side wall of the first barrel section, and an outer side wall of the cooling sleeve is slidably connected with an inner side wall of the fixing sleeve;
the elastic pre-tightening structure comprises a pre-tightening spring, one end of the cooling sleeve and one end of the first lens cone section, which is far away from the optical fiber interface, are abutted to one end of the pre-tightening spring together, and the other end of the pre-tightening spring is abutted to the second end of the fixing sleeve.
3. The beam coupling device according to claim 1 or 2, wherein a photosensitive element is further mounted in the fixing sleeve, and the photosensitive element is close to one end of the optical fiber interface facing the lens barrel.
4. The optical beam coupling device according to claim 2, wherein the fixed sleeve is rotated at a middle portion thereof by a rotating member coaxially disposed therewith, the lens barrel includes a second barrel section adjacent to the optical fiber interface, and the rotating member is threadedly connected to an outer sidewall of the second barrel section.
5. The beam coupling device according to claim 2, wherein an annular groove is formed in the cooling sleeve and an end of the first barrel section, which is away from the optical fiber interface, the annular groove is arranged along an axial direction of the barrel, one end of the pre-tightening spring extends into the annular groove, the other end of the pre-tightening spring abuts against an annular adjusting member, and the annular adjusting member is in threaded connection with the second end of the fixing sleeve.
6. The beam coupling device of claim 4, wherein the fixed sleeve comprises a first fixed sleeve and a second fixed sleeve coaxially connected; the rotating component comprises an adjusting helicoid, the adjusting helicoid is rotatably arranged between the first fixing sleeve and the second fixing sleeve, and the adjusting helicoid is in threaded connection with the outer side wall of the second lens barrel section; the optical fiber interface is installed in the first fixed sleeve, and the inner side wall of the second fixed sleeve is connected with the outer side wall of the cooling sleeve in a sliding mode.
7. The beam coupling device according to claim 6, wherein the second fixing sleeve has a first window, and the outer sidewall of the cooling sleeve has graduations arranged along the axial direction thereof, the graduations corresponding to the first window.
8. The light beam coupling device according to claim 6 or 7, wherein the second fixing sleeve has a second window, the outer sidewall of the cooling sleeve has a water inlet joint and a water outlet joint, the water inlet joint is connected to one end of the cooling channel, the other end of the cooling channel is connected to the water outlet joint, and the water inlet joint and the water outlet joint respectively correspond to the second window.
9. The beam coupling device according to claim 2, wherein a first sealing structure and a second sealing structure are disposed between two ends of the first lens barrel section and an inner side wall of the cooling sleeve, the cooling flow channel is located between the first sealing structure and the second sealing structure, and the cooling flow channel is arranged in a serpentine shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020722700.2U CN212207742U (en) | 2020-05-06 | 2020-05-06 | Light beam coupling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020722700.2U CN212207742U (en) | 2020-05-06 | 2020-05-06 | Light beam coupling device |
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| CN212207742U true CN212207742U (en) | 2020-12-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458802A (en) * | 2020-05-06 | 2020-07-28 | 武汉锐科光纤激光技术股份有限公司 | Light beam coupling device and coupling method thereof |
| CN115291337A (en) * | 2022-07-25 | 2022-11-04 | 无锡芯光互连技术研究院有限公司 | MT interface optical fiber connecting and fixing device |
-
2020
- 2020-05-06 CN CN202020722700.2U patent/CN212207742U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458802A (en) * | 2020-05-06 | 2020-07-28 | 武汉锐科光纤激光技术股份有限公司 | Light beam coupling device and coupling method thereof |
| CN111458802B (en) * | 2020-05-06 | 2024-02-13 | 武汉锐科光纤激光技术股份有限公司 | Light beam coupling device and coupling method thereof |
| CN115291337A (en) * | 2022-07-25 | 2022-11-04 | 无锡芯光互连技术研究院有限公司 | MT interface optical fiber connecting and fixing device |
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