CN113835160A - Miniature beam expanding optical fiber contact - Google Patents
Miniature beam expanding optical fiber contact Download PDFInfo
- Publication number
- CN113835160A CN113835160A CN202111059973.9A CN202111059973A CN113835160A CN 113835160 A CN113835160 A CN 113835160A CN 202111059973 A CN202111059973 A CN 202111059973A CN 113835160 A CN113835160 A CN 113835160A
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- Prior art keywords
- hole
- ceramic sleeve
- focusing lens
- closed ceramic
- hole end
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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
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
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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
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
-
- 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
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3853—Lens inside the ferrule
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention discloses a miniature beam expanding optical fiber contact element, wherein a contact pin comprises a needle end self-focusing lens, a needle end closed ceramic sleeve, a needle end insertion core and a needle end shell, wherein the needle end shell is connected with the needle end closed ceramic sleeve; the jack comprises a hole end self-focusing lens, a hole end closed ceramic sleeve, a hole end inserting core and a hole end shell, the hole end shell is connected with the hole end closed ceramic sleeve, the hole end inserting core and the hole end self-focusing lens are arranged in the hole end closed ceramic sleeve, and the hole end self-focusing lens is arranged at a position close to a pipe orifice of the hole end closed ceramic sleeve; the needle end closed ceramic sleeve of the contact pin is butted with the hole end closed ceramic sleeve of the jack. The invention adopts the self-focusing lens to collimate the optical fiber facula, realizes non-contact optical signal transmission, and improves the pollution resistance and mechanical life of the optical fiber contact member.
Description
Technical Field
The invention belongs to the technical field of optical fiber connectors, and particularly relates to a micro expanded beam optical fiber contact element.
Background
The light transmission type of the optical fiber connector can be divided into two types: the physical contact type and the non-physical contact beam expanding type are the main connection modes at present, signal transmission is realized by the tight butt joint of the end faces of the optical fibers, and compared with the beam expanding type optical fiber connector, the physical contact type optical fiber connector has lower cost, but has problems in the aspects of site cleanability, dust sensitivity and the like. If dust particles exist on the end face of the optical fiber, the dust particles can interrupt optical signals and even damage the end face of the optical fiber, and finally the optical fiber connector cannot work normally. Since the optical fiber of the physical contact type connector is in contact with the end face of the optical fiber, when the connector is vibrated, the end face of the optical fiber is damaged due to continuous friction of the end face of the optical fiber, and the insertion loss of the connector is increased, so that the connector cannot be applied to the field with frequent vibration. The connector is repeatedly butted for too many times, the end face of the optical fiber is damaged, the loss of the connector is increased until signal transmission cannot be realized, and the mechanical service life of the physical contact type optical fiber connector is short. Therefore, the problems to be solved are as follows: how to improve the anti-contamination capability and mechanical life of the optical fiber connector is crucial to the development trend of the structural design and application of the optical fiber connector contact.
Disclosure of Invention
The invention aims at the problems, makes up the defects of the prior art, and provides the micro beam expanding optical fiber contact element which can well improve the pollution resistance and the mechanical life of the optical fiber connector. The micro beam expanding optical fiber contact element has small volume and higher integration level; the self-focusing lens is adopted to collimate the optical fiber facula, so that non-contact optical signal transmission is realized, the pollution resistance of the optical fiber contact element is improved, and the mechanical life of the optical fiber contact element is prolonged.
In order to achieve the purpose, the invention adopts the following technical scheme.
The invention relates to a micro beam expanding optical fiber contact element, which is characterized in that: the pin is connected with the jack; the contact pin comprises a pin end self-focusing lens, a pin end closed ceramic sleeve, a pin end insertion core and a pin end shell, wherein the pin end shell is connected with the pin end closed ceramic sleeve, the pin end closed ceramic sleeve is internally provided with the pin end insertion core and the pin end self-focusing lens, and the pin end self-focusing lens is arranged at a position close to a pipe orifice of the pin end closed ceramic sleeve; the jack comprises a hole end self-focusing lens, a hole end closed ceramic sleeve, a hole end inserting core and a hole end shell, the hole end shell is connected with the hole end closed ceramic sleeve, the hole end inserting core and the hole end self-focusing lens are arranged in the hole end closed ceramic sleeve, and the hole end self-focusing lens is arranged at a position close to a pipe orifice of the hole end closed ceramic sleeve; the outer sleeve is arranged on the outer side of the hole end closed ceramic sleeve, the outer sleeve is connected with the hole end shell, and the needle end closed ceramic sleeve of the contact pin is inserted into the outer sleeve of the jack and is in butt joint with the hole end closed ceramic sleeve of the jack.
As a preferable aspect of the present invention, a gap is provided between the needle-end self-focusing lens in the needle-end closed ceramic bushing and the end face of the hole-end self-focusing lens in the hole-end closed ceramic bushing.
As another preferable scheme of the present invention, the end of the needle-end closed ceramic sleeve is fixed to the needle-end housing by adhesive bonding, and the needle-end self-focusing lens and the hole-end self-focusing lens are fixed to the corresponding closed ceramic sleeve by adhesive bonding; the end face of the needle end inserting core is coupled with the end face of the needle end self-focusing lens, and the end face of the hole end inserting core is coupled with the end face of the hole end self-focusing lens.
As another preferred scheme of the present invention, the hole end housing includes a hole front housing, a spring, a rear housing, and a positioning ring, the end of the hole end closed ceramic bushing is fixed to the hole front housing by gluing, and the spring, the rear housing, and the positioning ring are sequentially sleeved on the hole front housing.
Further, the positioning ring is fixedly pressed on the hole front shell on the rear side of the rear shell.
As another preferable scheme of the invention, the outer sleeve comprises an opening sleeve and a protective sleeve, the opening sleeve is sleeved outside the hole end closed ceramic sleeve, the protective sleeve is sleeved outside the opening sleeve, and the end part of the protective sleeve is fixed on the hole front shell through adhesive bonding.
Further, the opening sleeve is C-shaped.
As another preferable scheme of the invention, the maximum outer diameter of the pin and the jack does not exceed 2.34 mm.
The invention has the beneficial effects that:
according to the micro beam expanding optical fiber contact element provided by the invention, when the contact pin is in butt joint with the jack, the light spots are collimated through the self-focusing lenses arranged respectively, the coupling efficiency of optical signals between the contact pin and the jack is improved, the sensitivity of loss to transverse distance in the optical signal transmission process is reduced, the non-contact transmission of the optical signals is realized through the gap arranged between the contact pin and the end face of the self-focusing lens of the jack, the abrasion to the optical end face in the butt joint process is reduced, and the service life of the optical fiber contact element is prolonged. And the facula that the optic fibre launches is enlarged by multiple or tens of times through self-focusing lens, has increased the effective area of optical communication, consequently reduces the influence of dust to the terminal surface in the use, improves fiber connector's antipollution ability. Meanwhile, because the light spot is amplified, the effective area of optical communication is increased, and the vibration resistance of the contact piece is much higher than that of the traditional contact type optical fiber in the using process.
Drawings
FIG. 1 is a schematic structural diagram of a micro expanded beam fiber contact according to the present invention.
FIG. 2 is a schematic structural diagram of a ferrule of a micro expanded beam fiber contact according to the present invention.
FIG. 3 is a schematic structural diagram of a jack of a micro expanded beam fiber contact according to the present invention.
FIG. 4 is a schematic diagram of an open ferrule for a micro expanded beam fiber contact according to the present invention.
The labels in the figure are: 1 is a contact pin, 11 is a pin end self-focusing lens, 12 is a pin end closed ceramic sleeve, 13 is a pin end insertion core, and 14 is a pin end shell; 2, a jack, 21, a protective sleeve, 22, a sleeve with an opening, 23, a ceramic sleeve with a closed hole end, 24, a self-focusing lens with a hole end, 25, a core insert with a hole end, 26, 27, a front hole shell, 28, a rear shell and 29, wherein the protective sleeve is arranged on the jack; and 3 is a gap.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 to 3, the micro expanded beam optical fiber contact member of the present invention includes a pin 1 and a socket 2, wherein the pin 1 is connected to the socket 2; the contact pin 1 comprises a pin end self-focusing lens 11, a pin end closed ceramic sleeve 12, a pin end insertion core 13 and a pin end shell 14, the pin end shell 14 is connected with the pin end closed ceramic sleeve 12, the pin end closed ceramic sleeve 12 is internally provided with the pin end insertion core 13 and the pin end self-focusing lens 11, and the pin end self-focusing lens 11 is arranged at a pipe orifice close to the pin end closed ceramic sleeve 12. The jack 2 comprises a hole end self-focusing lens 24, a hole end closed ceramic sleeve 23, a hole end ferrule 25 and a hole end shell, the hole end shell is connected with the hole end closed ceramic sleeve 23, the hole end ferrule 25 and the hole end self-focusing lens 24 are arranged in the hole end closed ceramic sleeve 23, and the hole end self-focusing lens 24 is arranged at a position close to a pipe orifice of the hole end closed ceramic sleeve 23; an outer sleeve is arranged on the outer side of the hole end closed ceramic sleeve 23 and connected with the hole end shell, and the needle end closed ceramic sleeve 12 of the inserting needle 1 is inserted into the outer sleeve of the inserting hole 2 and is butted with the hole end closed ceramic sleeve 23 of the inserting hole 2. A gap 3 is arranged between the needle end self-focusing lens 11 in the needle end closed ceramic sleeve 12 and the hole end self-focusing lens 24 in the hole end closed ceramic sleeve 23. The hole end casing includes hole procapsid 27, spring 26, back casing 28 and holding ring 29, and hole end close ceramic bushing 23 tip is fixed in on the hole procapsid 27 through gluing bonding, and spring 26, back casing 28 and holding ring 29 cup joint in proper order on hole procapsid 27, the fixed crimping of holding ring 29 is on the hole procapsid 27 of back casing 28 rear side. The outer sleeve comprises an opening sleeve 22 and a protective sleeve 21, the opening sleeve 22 is sleeved on the outer side of the hole-end closed ceramic sleeve 23, the protective sleeve 21 is sleeved on the outer side of the opening sleeve 22, the end part of the protective sleeve 21 is fixed on the hole front shell 27 through adhesive bonding, the opening sleeve 22 is C-shaped, and as shown in fig. 4, the structure of the C-shaped opening sleeve 22 is schematic.
The method for assembling and installing each component of the micro beam expanding optical fiber contact element is explained by combining the accompanying drawings and the technical scheme:
firstly, respectively penetrating optical fibers into the needle end ferrule 13 and the hole end ferrule 25, fixing the optical fibers by 353ND epoxy glue, and then grinding and polishing the optical fibers to ensure that the end surfaces of the needle end ferrule 13 and the hole end ferrule 25 are free of scratches;
respectively dispensing 353ND epoxy glue on the needle end self-focusing lens 11 and the hole end self-focusing lens 24, and correspondingly feeding the materials into the needle end closed ceramic sleeve 12 and the hole end closed ceramic sleeve 23; respectively heating the end face of the needle end self-focusing lens 11 to the front end of the needle end closed ceramic sleeve 12 by 0.20-0.30 mm and the end face of the hole end self-focusing lens 24 to the front end of the hole end closed ceramic sleeve 23 by 0.20-0.30 mm to 120 ℃ until the end faces are solidified;
coupling the processed needle end ferrule 13 with the needle end self-focusing lens 11 and coupling the processed hole end ferrule 25 with the hole end self-focusing lens 24 respectively, and ensuring that the end surface of the needle end ferrule 13 is positioned at the focus of the needle end self-focusing lens 11 and the end surface of the hole end ferrule 25 is positioned at the focus of the hole end self-focusing lens 24 respectively, so that the most effective amplification and collimation of light beams emitted by optical fibers can be realized;
bonding and fixing the coupled tail 353ND epoxy glue of the needle end ferrule 13 and the hole end ferrule 25 with the needle end closed ceramic sleeve 12 and the hole end closed ceramic sleeve 23;
then, the spring 26, the rear shell 28 and the positioning ring 29 are sequentially sleeved from the rear side of the front hole shell 27, and then the positioning ring 29 is crimped and closed by crimping pliers and fixed on the front hole shell 27;
installing the needle end closed ceramic sleeve 12 and the hole end closed ceramic sleeve 23 at the front ends of the needle end shell 14 and the hole front shell 27, and dispensing and fixing;
sleeving the open sleeve 22 on the hole end closed ceramic sleeve 23;
finally, the protective sleeve 21 is sleeved at the front end of the front hole shell 27, and anaerobic adhesive is added to fix the protective sleeve 21 on the front hole shell 27.
Specifically, an optical fiber is inserted into the needle end ferrule 13, and is fixed by 353ND epoxy glue and then ground and polished, and the needle end self-focusing lens 11 is fixed in the needle end closed ceramic sleeve 12 by 353ND epoxy glue in advance and is coupled with the processed needle end ferrule 13, so that the amplification and collimation of the light beam are realized. An optical fiber penetrates through the hole end insertion core 25, the optical fiber is fixed by 353ND epoxy glue and then ground and polished, the hole end self-focusing lens 24 is fixed in the hole end closed ceramic sleeve 23 by the 353ND epoxy glue in advance and is coupled with the processed hole end insertion core 25, the most effective amplification and collimation of light beams are realized, and the hole end closed ceramic sleeve 23 and the hole end insertion core 25 are fixedly bonded by the 353ND epoxy glue; the open sleeve 22 is in interference fit with the hole end closed ceramic sleeve 23, the spring 26, the rear shell 28 and the positioning ring 29 are sequentially sleeved from the rear side of the hole front shell 27, and then the positioning ring 29 is subjected to compression joint and closing by using compression pliers; the protective sleeve 21 and the hole front housing 27 are fixed by anaerobic adhesive bonding.
The self-focusing lenses of the contact pin 1 and the jack 2 collimate and amplify light beams emitted by the optical fibers by using the principle that the refractive index of the lenses changes along with the radius, and finally non-contact optical signal transmission is realized; the closed ceramic sleeves of the contact pin 1 and the jack 2 play a role in protecting and fixing the self-focusing lens, and assist the self-focusing lens to be coupled with the optical fiber.
The inserting core of the inserting pin 1 and the inserting core of the inserting hole 2 are used for protecting and fixing the optical fiber, and the auxiliary self-focusing lens is coupled with the optical fiber; the spring 26 can provide butting force in the process of butting the pin 1 and the jack 2; the needle end housing 14 and the front hole housing 27 play a role in protection and support, and the vibration resistance and pressure resistance of the product are improved.
The open sleeve 22 has high precision, can ensure the butt joint precision of the pin 1 and the jack 2, and plays a positioning role when the pin 1 is in butt joint with the jack 2 to ensure that the coupling efficiency of a light path is highest; the protective sleeve 21 is used for protecting the opening sleeve 22 from falling off from the hole end closed ceramic sleeve 23; the positioning ring 29 is used for fixing the rear shell 28 and the spring 26, and the spring 26 and the rear shell 28 are prevented from falling off in the using process.
The miniature beam expanding optical fiber contact element has the advantages that: after the contact member is produced, the contact member can be directly sent into an optical fiber connector matched with a 20# optical fiber contact member through a taking and sending tool with a standard model, and the contact member has the main advantage of low sensitivity to dust; meanwhile, the problem that the optical performance is influenced due to damage caused by the fact that the end face of the optical fiber is exposed outside can be effectively avoided; the connector is convenient to butt joint and can be applied to systems such as aviation, electronics, ships and warships and the like.
The invention adopts the self-focusing lens to collimate the optical fiber facula, realizes non-contact optical signal transmission, prolongs the service life of the single-mode connector terminal and improves the reliability of the connector. According to the invention, the lens refractive index gradient principle is adopted to amplify optical fiber light spots, the effective area of optical signal transmission is increased, the sensitivity of the terminal to dust is reduced, the anti-pollution performance of the connector is improved, the end faces of the lenses are subjected to film coating treatment, and the terminal is easier to clean compared with the traditional contact type optical fiber connector. Because the facula is enlarged, the sensitivity to vibration and impact is lower in the using process, and the vibration and impact resistance of the optical fiber connector is greatly improved. The maximum outer diameter of the pin 1 and the jack 2 does not exceed 2.34mm, the contact element is small in size, and the integration level is higher.
It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the invention.
Claims (8)
1. A micro expanded beam fiber contact, comprising: the pin is connected with the jack; the contact pin comprises a pin end self-focusing lens, a pin end closed ceramic sleeve, a pin end insertion core and a pin end shell, wherein the pin end shell is connected with the pin end closed ceramic sleeve, the pin end closed ceramic sleeve is internally provided with the pin end insertion core and the pin end self-focusing lens, and the pin end self-focusing lens is arranged at a position close to a pipe orifice of the pin end closed ceramic sleeve; the jack comprises a hole end self-focusing lens, a hole end closed ceramic sleeve, a hole end inserting core and a hole end shell, the hole end shell is connected with the hole end closed ceramic sleeve, the hole end inserting core and the hole end self-focusing lens are arranged in the hole end closed ceramic sleeve, and the hole end self-focusing lens is arranged at a position close to a pipe orifice of the hole end closed ceramic sleeve; the outer sleeve is arranged on the outer side of the hole end closed ceramic sleeve, the outer sleeve is connected with the hole end shell, and the needle end closed ceramic sleeve of the contact pin is inserted into the outer sleeve of the jack and is in butt joint with the hole end closed ceramic sleeve of the jack.
2. The micro expanded beam fiber contact of claim 1, wherein: and a gap is arranged between the needle end self-focusing lens in the needle end closed ceramic sleeve and the end surface of the hole end self-focusing lens in the hole end closed ceramic sleeve.
3. The micro expanded beam fiber contact of claim 1, wherein: the end part of the needle end closed ceramic sleeve is fixed on the needle end shell through adhesive bonding, and the needle end self-focusing lens and the hole end self-focusing lens are fixed in the corresponding closed ceramic sleeve through adhesive bonding; the end face of the needle end inserting core is coupled with the end face of the needle end self-focusing lens, and the end face of the hole end inserting core is coupled with the end face of the hole end self-focusing lens.
4. The micro expanded beam fiber contact of claim 1, wherein: the hole end shell comprises a hole front shell body, a spring, a rear shell body and a positioning ring, the end part of the hole end closed ceramic sleeve is fixed on the hole front shell body through adhesive bonding, and the spring, the rear shell body and the positioning ring are sequentially sleeved on the hole front shell body.
5. The micro expanded beam fiber contact of claim 4, wherein: the locating ring is fixedly pressed on the hole front shell on the rear side of the rear shell.
6. The micro expanded beam fiber contact of claim 1, wherein: the outer sleeve includes opening sleeve pipe, protective sheath, and opening sleeve pipe cup joints in the hole end and closes a mouthful ceramic bushing outside, and the protective sheath is cup jointed in the opening sleeve pipe outside, and protective sheath tip passes through to glue to bond to be fixed in on the hole procapsid.
7. The micro expanded beam fiber contact of claim 6, wherein: the opening sleeve is C-shaped.
8. The micro expanded beam fiber contact of claim 1, wherein: the maximum outer diameter of the pin and the jack is 2.34 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111059973.9A CN113835160A (en) | 2021-09-10 | 2021-09-10 | Miniature beam expanding optical fiber contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111059973.9A CN113835160A (en) | 2021-09-10 | 2021-09-10 | Miniature beam expanding optical fiber contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113835160A true CN113835160A (en) | 2021-12-24 |
Family
ID=78958912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111059973.9A Pending CN113835160A (en) | 2021-09-10 | 2021-09-10 | Miniature beam expanding optical fiber contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113835160A (en) |
-
2021
- 2021-09-10 CN CN202111059973.9A patent/CN113835160A/en active Pending
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