CN213517767U - Collimating system of optical fiber end cap - Google Patents
Collimating system of optical fiber end cap Download PDFInfo
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- CN213517767U CN213517767U CN202021084897.8U CN202021084897U CN213517767U CN 213517767 U CN213517767 U CN 213517767U CN 202021084897 U CN202021084897 U CN 202021084897U CN 213517767 U CN213517767 U CN 213517767U
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- end cap
- optical fiber
- mirror
- diaphragm
- fiber end
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 72
- 239000000835 fiber Substances 0.000 claims abstract description 38
- CPBQJMYROZQQJC-UHFFFAOYSA-N helium neon Chemical compound [He].[Ne] CPBQJMYROZQQJC-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000003384 imaging method Methods 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims description 14
- 230000003287 optical effect Effects 0.000 claims description 9
- 102100030024 Endothelial protein C receptor Human genes 0.000 description 7
- 101001012038 Homo sapiens Endothelial protein C receptor Proteins 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 241000973497 Siphonognathus argyrophanes Species 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000012994 industrial processing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The utility model discloses a collimating system of optic fibre end cap, helium neon laser can produce helium neon light, and optic fibre end cap and aspherical mirror are installed respectively to the both ends nozzle of lens cone, form the light path between the barrel chamber of lens cone and helium neon laser's the output. The first CCD is arranged between the first mirror bracket and the optical fiber end cap assembly and provided with an imaging sheet. The helium-neon beam is capable of forming a spot image on the imaging sheet. The first diaphragm is arranged on one side of the optical fiber end cap assembly and provided with a diaphragm hole, and the diaphragm hole of the first diaphragm is positioned on the light path. The second diaphragm is arranged between the He-Ne laser and the first CCD, the first diaphragm is provided with a diaphragm hole, and the diaphragm hole of the second diaphragm is positioned on the light path. The quality of the laser output beam is ensured.
Description
Technical Field
The utility model belongs to laser test field especially relates to a collimation system of optic fibre end cap.
Background
Along with the maturity and popularization of the laser processing technology, the fiber laser plays an irreplaceable role in the fields of industrial processing, material processing, 3D printing, national defense safety and the like. Laser manufacturers are continually seeking and challenging higher powers, better beam quality, higher pulse energies, and more convenient operational control for better process quality and higher process speeds.
The end face of the optical fiber is welded with a larger quartz block to form an optical fiber end cap, and meanwhile, the output face of the quartz block is subjected to antireflection film treatment, so that the safe output of high-power narrow-pulse-width optical fiber laser is realized. Since the optical fiber end cap is installed in the system, the laser beam passing through the optical fiber end cap cannot be emitted in parallel, and the quality of the light beam output by the optical fiber end cap cannot be ensured, therefore, how to collimate the optical fiber end cap becomes a technical problem which needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a collimating system of optic fibre end cap to guarantee the light beam quality of optic fibre end cap output.
The utility model provides a collimation system of optic fibre end cap, it includes:
a he-ne laser capable of generating he-ne light, the he-ne laser having an output capable of emitting a he-ne light beam.
And the optical fiber end cap component comprises a mounting seat, the mounting seat is provided with a mounting hole, a lens cone is arranged in the mounting hole, the optical fiber end caps and the aspheric mirror are respectively mounted at the tube mouths at the two ends of the lens cone, and a light path is formed between the tube cavity of the lens cone and the output end of the helium-neon laser.
And the first mirror frame comprises a reflecting mirror, and the reflecting mirror of the first mirror frame is arranged on the light path. The mirror of the first frame is capable of reflecting the helium neon light beam into the barrel cavity of the lens barrel.
A second mirror mount disposed between the he-ne laser and the first mirror mount, the second mirror mount having a mirror, the second mirror mount being adjustable to reflect the he-ne beam onto the mirror of the first mirror mount.
And the first CCD is arranged between the first mirror bracket and the optical fiber end cap assembly and is provided with an imaging sheet. The helium-neon beam is capable of forming a spot image on the imaging sheet.
And the first diaphragm is arranged on one side of the optical fiber end cap component and provided with a diaphragm hole, and the diaphragm hole of the first diaphragm is positioned on the light path.
And the second diaphragm is arranged between the helium-neon laser and the first CCD, and the diaphragm hole of the second diaphragm is positioned on the light path.
Further, the alignment system for the optical fiber end cap further comprises: a second CCD having an imaging sheet. The imaging sheet of the second CCD is arranged between the second lens bracket and the optical fiber end cap component. The helium-neon beam is capable of forming a spot image on the imaging plate of the second CCD.
Furthermore, the optical fiber end cap comprises a tail optical fiber and an end cap, the end cap is in a round table shape, the end cap is provided with a small-diameter end face and a large-diameter end face, and the small-diameter end face of the end cap is welded with one end of the tail optical fiber.
The tail fiber is fixed with the optical fiber cover through the optical fiber fixing block, and the other end of the tail fiber is connected with the optical fiber interface of the beam combiner.
Further, the optical fiber end cap assembly includes: a base, the base is connected with the mounting seat. The lens cone is arranged in the mounting hole of the mounting seat, and the inner cavity of the lens cone is in a step hole shape.
The large aperture section at one end of the lens cone is provided with a rotating ring which is connected with the aspherical mirror, the aspherical mirror is fixed with a pressing ring through a tetrafluoro washer, the rotating center line of the rotating ring is eccentrically arranged with the aspherical mirror, and the rotating ring can drive the aspherical mirror to rotate.
The small aperture section of the other end of the lens cone is sleeved with a rotating ring. An optical fiber metal sleeve is arranged in the small-aperture section, and the rotating ring is connected with the optical fiber metal sleeve. The rotation center line of the rotating ring coincides with the axial core line of the optical fiber end cap in the optical fiber metal sleeve, the rotating ring can drive the optical fiber end cap to rotate synchronously, and the rotating ring is locked with the mounting seat through a screw.
The utility model discloses in based on the collimation system of optic fibre end cap, carry out the collimation test through the collimation system to end cap subassembly, improve the light beam quality of optic fibre end cap output.
Drawings
Fig. 1 is a schematic diagram of the collimation test system of the present invention.
Fig. 2 is a schematic diagram of the optical fiber end cap assembly of the present invention.
Fig. 3 is a side view of the optical fiber end cap of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.
As shown in fig. 1, the arrow with dotted line in the figure is the direction of light beam emission, the utility model provides a collimation system of fiber end cap, it includes:
a he-ne laser 10 capable of generating he-ne light, the he-ne laser 10 having an output capable of emitting a he-ne beam.
And the optical fiber end cap assembly 20 comprises a mounting seat 21, the mounting seat 21 is provided with a mounting hole, a lens cone 24 is arranged in the mounting hole, the tube ports at two ends of the lens cone 24 are respectively provided with an optical fiber end cap and an aspherical mirror 26, and an optical path is formed between the tube cavity of the lens cone 24 and the output end of the he-ne laser 10.
And a first frame 31 including a reflecting mirror, the reflecting mirror of the first frame 31 being disposed on the optical path. The mirror of the first frame 31 is capable of reflecting a helium neon beam into the barrel cavity of the lens barrel.
A second mirror mount 32 disposed between the he-ne laser 10 and the first mirror mount 31, the second mirror mount 32 having a mirror, the second mirror mount 32 being adjustable to reflect the he-ne beam onto the mirror of the first mirror mount 31.
A first CCD41 disposed between the first frame 31 and the fiber end cap assembly 20, the first CCD41 having an imaging sheet. The helium-neon beam is capable of forming a spot image on the imaging sheet.
A first diaphragm 51 disposed on one side of the fiber end cap assembly 20, the first diaphragm 51 having a diaphragm aperture, the diaphragm aperture of the first diaphragm 51 being positioned on the optical path.
And a second diaphragm 52 arranged between the he-ne laser 10 and the first CCD41, wherein the diaphragm hole of the second diaphragm 52 is positioned on the light path.
The he-ne laser 10 is a gas laser using neutral atomic gases such as helium and neon as working substances. A helium-neon beam is output in a continuous excitation.
The following does the utility model discloses well collimation system's collimation test method, it includes:
s101: an aluminum-plated film is mounted on the reflector of the first frame 31, and a dichroic mirror is mounted on the second frame 32. The mirror of the first frame 31 and the dichroic mirror of the second frame 32 are adjusted to a target height.
S102: the diaphragm holes of the first diaphragm 51 and the second diaphragm 52 are adjusted to a target height.
S103: the pitch and horizontal knobs of the mirror of the first frame 31 are adjusted to transmit he-ne light along the light path, and the second diaphragm 52 is moved back and forth to adjust the he-ne light reflected by the mirror of the first frame 31 to a target height.
S104: s103 is repeated to pass a helium-neon light beam through the center of the diaphragm aperture of the first diaphragm 51, determining that the height of the helium-neon light is adjusted to a target height over the entire optical path.
S105: the collimation test of the collimation system was completed by adjusting the base of fiber end cap assembly 20 to pass he-ne through the center of fiber optic ferrule 28, and adjusting the position of first CCD41 so that the he-ne beam hits the center of first CCD41 and forms a circular spot image.
Note that the fiber end cap and aspherical mirror 26 are not installed in S105, so that he — ne light passes through the center of the fiber metal cover 28.
For example, the target height is 100mm, the reflector of the first frame 31 and the dichroic mirror of the second frame 32 are adjusted to 100mm, then the aperture holes of the first aperture 51 and the second aperture 52 are adjusted to 100mm, the pitch and horizontal knobs of the reflector of the first frame 31 are adjusted to transmit he-ne light along the light path, the second aperture 52 is moved back and forth to adjust the he-ne light reflected by the reflector of the first frame 31 to 100mm, and the position of the first CCD41 is adjusted to make the he-ne light beam strike the center of the first CCD41 and form a circular light spot image, thereby completing the collimation test of the collimation system. The steps are prepared for aligning the optical fiber end cap, and alignment of the optical fiber end cap after installation is ensured.
A Charge-coupled Device (CCD) may be referred to as a CCD image sensor, also called an image controller. A CCD is a semiconductor device that can convert an optical image into an electrical signal. The tiny photosensitive substances implanted on the CCD are called pixels (pixels). The larger the number of pixels contained in a CCD, the higher the resolution of the picture it provides. The CCD acts like a film, but it converts light signals into charge signals. The CCD has many photodiodes arranged in order to sense light and convert the light signal into an electrical signal, which is converted into a digital image signal by an external sampling amplifier and an analog-to-digital conversion circuit.
A stop is an entity that acts to limit the light beam in an optical system. It may be the edge of a lens, a frame or a specially provided screen with holes. The diaphragm is used to limit the size of the light beam.
As shown in fig. 2, the fiber optic end cap assembly 20 includes: a base 22, the base 22 is connected with the mounting base 21. A lens barrel 24 is arranged in the mounting hole 23 of the mounting base 21, and the barrel inner cavity of the lens barrel 24 is in a stepped hole shape.
The large aperture section at one end of the lens cone 24 is provided with a rotating ring 25, the rotating ring 25 is connected with an aspherical mirror 26, the aspherical mirror 26 is fixed with a pressing ring through a tetrafluoro washer, the rotating center line of the rotating ring 25 is eccentrically arranged with the aspherical mirror 26, and the rotating ring 25 can drive the aspherical mirror 26 to rotate.
The small aperture section at the other end of the lens cone 24 is sleeved with a rotating ring 27. The small-bore section is provided with an optical fiber metal sleeve 28, and the rotating ring 27 is connected with the optical fiber metal sleeve 28. The rotation center line of the rotating ring 27 coincides with the axial core line of the optical fiber end cap in the optical fiber metal sleeve 28, the rotating ring 27 can drive the optical fiber end cap to synchronously rotate, and the rotating ring 27 and the mounting base 21 are locked through screws.
The swivel 25 is arranged in the large-aperture section at one end of the lens cone 24, the swivel 27 is sleeved outside the small-aperture section at the other end of the lens cone 24, and the swivel 25 and the swivel 27 can adjust the optical fiber end caps in the aspherical mirror 26 and the optical fiber metal sleeve 28 respectively, so that the optical fiber end caps can be aligned quickly.
As shown in fig. 3, the optical fiber end cap includes a tail fiber 2 and an end cap 1, the end cap 1 is in a circular truncated cone shape, the end cap 1 has a small-diameter end face 11 and a large-diameter end face 12, and the small-diameter end face 11 of the end cap 1 is welded to one end of the tail fiber 2.
The tail fiber 2 is fixed with the optical fiber cover 14 through the optical fiber fixing block 13, and the other end of the tail fiber 2 is connected with the optical fiber interface of the beam combiner.
The utility model discloses the collimation system of well optic fibre end cap still includes: a second CCD42 having an imaging patch. The imaging patch of the second CCD42 is disposed between the second frame 32 and the fiber end cap assembly 20. The helium-neon light beam is capable of forming a spot image on the imaging plate of the second CCD 42.
Alignment of the fiber end cap is facilitated by the additional provision of a second CCD 42.
The utility model discloses collimation test method still includes:
s201: the end cap 1 and the tail fiber 2 are welded to form an optical fiber end cap, the optical fiber end cap is installed in the optical fiber metal sleeve 28, and the tail fiber 2 is fixed by the optical fiber fixing block 13 and the optical fiber cover 14.
S202: the aspherical mirror 26 is mounted in a swivel 25 and fixed to the swivel 25 by a teflon washer and a lens retainer.
S203: and (3) connecting the tail fiber 2 into the beam combiner, enabling laser generated by the beam combiner to enter from the tail fiber 2, outputting from the end cap 1, and rotating the rotating ring 27 to enable the optical fiber metal sleeve 28 to synchronously rotate until the diameter of a light spot on the second CCD42 is the same as the diameter phi of the large-diameter end face 12 of the end cap 1. Locking the fixing screw between the rotor 27 and the barrel 24.
S204: and a fixing screw between the rotating ring 25 and the lens cone 24 is unscrewed, the rotating ring 25 is rotated to drive the optical fiber metal sleeve 28 to rotate, and the change of the laser spot central point is recorded through the second CCD 42.
S205: the eccentric size of the aspherical mirror 26 on the rotating ring 25 is adjusted, and when the light spot is shot at the center of the second CCD42, the rotating ring 25 and the lens cone 24 are fixed, so that the collimation test of the optical fiber end cap is completed.
For example, the diameters of the small-diameter end face 11 and the large-diameter end face 12 of the end cap 1 are 0.8mm and 3mm, respectively, first, the optical fiber ferrule 28 is synchronously rotated by rotating the turn 27 until the diameter of the light spot on the second CCD42 is the same as the diameter of the large-diameter end face 12 of the end cap 1, which is 3 mm. Locking the fixing screw between the rotor 27 and the barrel 24.
Then, because the rotation center line of the swivel 25 and the aspherical mirror 26 are eccentrically arranged, the swivel 25 is rotated to adjust the eccentric size of the aspherical mirror 26, and when the light spot can be shot at the center of the second CCD42, the swivel 25 and the lens cone 24 are fixed to complete the collimation test of the optical fiber end cap, and the quality of the light beam output by the optical fiber end cap is ensured after the collimation of the optical fiber end cap is completed.
Claims (4)
1. An alignment system for an optical fiber end cap, comprising:
a he-ne laser (10) capable of generating he-ne light, said he-ne laser (10) having an output capable of emitting a he-ne light beam;
the optical fiber end cap assembly (20) comprises a mounting seat (21), the mounting seat (21) is provided with a mounting hole, a lens cone (24) is arranged in the mounting hole, tube ports at two ends of the lens cone (24) are respectively provided with an optical fiber end cap and an aspherical mirror (26), and an optical path is formed between a tube cavity of the lens cone (24) and the output end of the helium neon laser (10);
a first frame (31) including a mirror, the mirror of the first frame (31) being disposed on the optical path; the reflector of the first lens frame (31) can reflect a helium-neon light beam into the barrel cavity of the lens barrel;
a second mirror mount (32) disposed between said he-ne laser (10) and said first mirror mount (31), said second mirror mount (32) having a mirror, said second mirror mount (32) being adjustable to reflect said he-ne beam onto the mirror of the first mirror mount (31);
a first CCD (41) disposed between the first frame (31) and the fiber end cap assembly (20), the first CCD (41) having an imaging plate; the helium-neon light beam can form a light spot image on the imaging sheet;
a first diaphragm (51) disposed on one side of said fiber end cap assembly (20), said first diaphragm (51) having a diaphragm aperture, said diaphragm aperture of said first diaphragm (51) being located on said optical path;
and the second diaphragm (52) is arranged between the helium-neon laser (10) and the first CCD (41), and a diaphragm hole of the second diaphragm (52) is positioned on the light path.
2. The fiber end cap alignment system of claim 1, further comprising:
a second CCD (42) having an imaging sheet; the imaging plate of the second CCD (42) is arranged between the second mirror bracket (32) and the fiber end cap assembly (20); the helium-neon light beam is capable of forming a spot image on an imaging plate of a second CCD (42).
3. The alignment system of the optical fiber end cap according to claim 1, wherein the optical fiber end cap comprises a pigtail (2) and an end cap (1), the end cap (1) is in the shape of a circular truncated cone, the end cap (1) has a small-diameter end face (11) and a large-diameter end face (12), and the small-diameter end face (11) of the end cap (1) is welded with one end of the pigtail (2);
the tail fiber (2) is fixed with the optical fiber cover (14) through the optical fiber fixing block (13), and the other end of the tail fiber (2) is connected with an optical fiber interface of the beam combiner.
4. The fiber end cap alignment system of claim 1, wherein the fiber end cap assembly (20) comprises:
a base (22), wherein the base (22) is connected with the mounting seat (21); a lens barrel (24) is arranged in a mounting hole (23) of the mounting seat (21), and a barrel inner cavity of the lens barrel (24) is in a step hole shape;
a rotating ring (25) is arranged in a large-aperture section at one end of the lens cone (24), the rotating ring (25) is connected with an aspherical mirror (26), the aspherical mirror (26) is fixed with a pressing ring through a tetrafluoro washer, the rotating center line of the rotating ring (25) and the aspherical mirror (26) are eccentrically arranged, and the rotating ring (25) can drive the aspherical mirror (26) to rotate;
a small-bore section at the other end of the lens cone (24) is sleeved with a rotating ring (27); an optical fiber metal sleeve (28) is arranged in the small-aperture section, and the rotating ring (27) is connected with the optical fiber metal sleeve (28); the rotating center line of the rotating ring (27) is superposed with the axis line of the optical fiber end cap in the optical fiber metal sleeve (28), the rotating ring (27) can drive the optical fiber end cap to rotate synchronously, and the rotating ring (27) is locked with the mounting seat (21) through a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021084897.8U CN213517767U (en) | 2020-06-12 | 2020-06-12 | Collimating system of optical fiber end cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021084897.8U CN213517767U (en) | 2020-06-12 | 2020-06-12 | Collimating system of optical fiber end cap |
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| Publication Number | Publication Date |
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| CN213517767U true CN213517767U (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021084897.8U Active CN213517767U (en) | 2020-06-12 | 2020-06-12 | Collimating system of optical fiber end cap |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111752002A (en) * | 2020-06-12 | 2020-10-09 | 杭州奥创光子技术有限公司 | A kind of optical fiber end cap alignment system and its alignment test method |
| CN115145020A (en) * | 2022-06-16 | 2022-10-04 | 北京遥感设备研究所 | Optical adjusting system and method for enabling laser propagation direction to be parallel to optical platform |
-
2020
- 2020-06-12 CN CN202021084897.8U patent/CN213517767U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111752002A (en) * | 2020-06-12 | 2020-10-09 | 杭州奥创光子技术有限公司 | A kind of optical fiber end cap alignment system and its alignment test method |
| CN115145020A (en) * | 2022-06-16 | 2022-10-04 | 北京遥感设备研究所 | Optical adjusting system and method for enabling laser propagation direction to be parallel to optical platform |
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