CN113219595B - Detachable beam-expanding type optical fiber contact - Google Patents
Detachable beam-expanding type optical fiber contact Download PDFInfo
- Publication number
- CN113219595B CN113219595B CN202110335253.4A CN202110335253A CN113219595B CN 113219595 B CN113219595 B CN 113219595B CN 202110335253 A CN202110335253 A CN 202110335253A CN 113219595 B CN113219595 B CN 113219595B
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- Prior art keywords
- lens
- optical fiber
- contact
- baffle ring
- ceramic sleeve
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Classifications
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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
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3826—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres characterised by form or shape
-
- 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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- 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
- G02B6/3855—Details of mounting fibres in ferrules; Assembly methods; Manufacture characterised by the method of anchoring or fixing the fibre within the ferrule
-
- 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
- G02B6/389—Dismountable connectors, i.e. comprising plugs characterised by the method of fastening connecting plugs and sockets, e.g. screw- or nut-lock, snap-in, bayonet type
Abstract
The invention discloses a detachable beam-expanding type optical fiber contact piece, which comprises: the device comprises a ferrule assembly, a contact piece shell, a spring, a slip ring, a baffle ring, a press-fit sleeve, aramid fibers and an optical cable outer sheath; the ferrule assembly comprises a ceramic sleeve, a G-lens, a ferrule and an optical fiber. The invention optimizes the fixing structure of the optical fiber contact piece and improves the installation efficiency of the optical fiber contact piece.
Description
Technical Field
The invention belongs to the technical field of optical fiber communication, and particularly relates to a detachable beam-expanding type optical fiber contact.
Background
With the gradual development of the application of the optical fiber communication technology in military weaponry, the optical fiber connector is increasingly applied to various occasions as the optical passive component with the largest usage amount in the optical communication system, however, the traditional optical fiber connector is in butt joint by adopting optical fiber contact connection, the optical performance of the optical fiber connector is reduced due to the influence of dust particles and the like, particularly, the use environment of military products is bad, and the use reliability of the optical fiber connector becomes a bottleneck for restricting the application of the optical fiber technology in the military field.
Disclosure of Invention
The invention solves the technical problems that: overcomes the defects of the prior art, provides a detachable beam-expanding type optical fiber contact, optimizes the fixing structure of the optical fiber contact and improves the installation efficiency of the optical fiber contact.
The invention aims at realizing the following technical scheme: a detachable expanded beam fiber optic contact, comprising: the device comprises a ferrule assembly, a contact piece shell, a spring, a slip ring, a baffle ring, a press-fit sleeve, aramid fibers and an optical cable outer sheath; the ferrule assembly comprises a ceramic sleeve, a G-lens, a ferrule and an optical fiber; the G-lens is arranged in the inner cavity of the ceramic sleeve, and a gap is reserved between the flat end face of the G-lens and the front end face of the ceramic sleeve; one end of the inserting core is embedded in the G-lens, and the other end of the inserting core is connected with one end of the optical fiber; the ferrule assembly is connected with the contact shell through interference press fit; the spring and the slip ring are both sleeved on the outer surface of the contact piece shell, one end of the spring is pressed with the boss of the contact piece shell, and the other end of the spring is pressed with one end of the slip ring; one end of the baffle ring is connected with one end of the contact shell, and the other end of the slip ring is pressed with one end of the baffle ring; the other end of the baffle ring is sleeved on the outer surface of the optical fiber; part of the aramid fiber is sleeved on the outer surface of the other end of the baffle ring, and the rest of the aramid fiber is sleeved on the outer surface of the optical fiber; the optical cable outer sheath is sleeved on the outer surface of the aramid fiber; the crimping sleeve is sleeved on the outer surface of the other end of the baffle ring and the outer surface of the optical cable outer sheath.
In the detachable beam-expanding type optical fiber contact, one end of the ceramic sleeve is provided with an external chamfer, and the other end of the ceramic sleeve is provided with an internal chamfer, so that the installation of the G-lens is facilitated by the internal chamfer.
In the detachable beam-expanding type optical fiber contact element, the ceramic sleeve is provided with the glue filling hole for injecting ultraviolet glue solution and playing a role in observing the insertion position of the insertion core.
In the detachable beam-expanding type optical fiber contact piece, the diameter of the G-lens is equal to the diameter of the lens, the pitch is equal to the pitch, the two end faces of the G-lens are plated with the antireflection film; and one end of the G-lens is an inclined angle, the sharp corner part is subjected to chamfering treatment, and the G-lens and the ceramic sleeve are bonded by adopting ND epoxy glue.
In the detachable beam-expanding type optical fiber contact element, the diameter of the inserting core is mm, the inserting core is bonded with the optical fiber through ND glue, the end face oblique angle of one end of the inserting core is an angle, and the end faces of the two ends of the inserting core are plated with antireflection films.
In the detachable beam-expanding optical fiber contact element, the distance between the G-lens and the ferrule satisfies the following relationship:
wherein A is a focusing constant, r is a distance from a point in the G-lens to a central axis, and delta is a relative refractive index difference between the center of the G-lens and the point in the G-lens.
In the detachable beam-expanding type optical fiber contact, the contact shell comprises a body, a boss, a guide key, a limiting step and a thread structure; the boss, the limiting step and the thread structure are all arranged on the outer surface of the body; the outer surface of the boss is provided with a guide key; one end of the baffle ring is connected with the thread structure.
In the detachable beam-expanding type optical fiber contact element, the baffle ring comprises a second thread structure, a cylinder part and a tail step; wherein the second thread structure is integrally connected with the cylindrical part; the tail step is arranged on the outer surface of the cylinder part; the second thread structure is connected with the thread structure.
In the detachable beam-expanding optical fiber contact element, the outer circle diameter d1 of the tail step and the inner diameter d2 of the crimping sleeve have the following constraint relation:
in the detachable beam-expanding type optical fiber contact piece, 353ND glue solution is injected into the tail of the baffle ring, and the inner gap is filled, so that the optical fiber is adhered and fixed.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the invention, the ceramic sleeve, the G-lens, the ferrule and the optical fiber are manufactured into the ferrule assembly, so that the function of expanding the optical signal beam is achieved, and the influence of optical performance degradation caused by shielding of dust on an optical communication area is reduced;
(2) According to the invention, through the design of the gap between the front end surface of the ceramic sleeve and the end surface of the lens, the lens is ensured not to be contacted when the two contact pieces are in butt joint, so that the phenomenon of friction damage to the end surface of the lens caused by vibration is avoided;
(3) According to the invention, through the design of the glue filling holes, the problem that ultraviolet glue cannot be quickly cured in the ceramic sleeve 1 due to the fact that ultraviolet cannot penetrate the ceramic sleeve is solved;
(4) The contact assembly process of the invention takes the guide key-glue filling hole as a reference, thereby ensuring that the dispersion of all optical properties is small;
(5) According to the invention, the anti-rotation effect is achieved through the design of the guide key on the contact shell, so that the contact does not rotate in the circumferential direction in the connector, and the product stability is good;
(6) According to the invention, through the limit step structure in the contact shell, the reliable abutting effect of the contact can be ensured when the optical cable is stressed;
(7) According to the invention, the quick assembly effect of the contact is achieved through the threaded structure of the baffle ring and the contact shell.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a schematic diagram of a detachable expanded beam fiber contact according to an embodiment of the present invention;
FIG. 2 is a block diagram of a ferrule assembly provided by an embodiment of the present invention;
FIG. 3 is a block diagram of a contact housing provided in an embodiment of the present invention;
FIG. 4 is a block diagram of a baffle ring according to an embodiment of the present invention;
FIG. 5 is a schematic view of a contact loading connector pin end structure provided in an embodiment of the present invention;
FIG. 6 is a schematic view of a contact loading connector receptacle end according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a connector according to an embodiment of the present invention after plugging;
FIG. 8 is another block diagram of a ferrule assembly provided by an embodiment of the present invention;
fig. 9 is a schematic view of an outer circle of a tail step and a crimping sleeve provided by an embodiment of the invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
Fig. 1 is a schematic structural diagram of a detachable beam-expanding optical fiber contact according to an embodiment of the present invention. As shown in fig. 1, the detachable expanded beam fiber optic contact includes: the device comprises a ferrule assembly 12, a contact shell 4, a spring 5, a slip ring 6, a baffle ring 7, a crimping sleeve 8, aramid fibers 10 and an optical cable outer sheath 11. Wherein, the liquid crystal display device comprises a liquid crystal display device,
as shown in fig. 2, the ferrule assembly 12 includes a ceramic ferrule 1, a G-lens2, a ferrule 3, and an optical fiber 9; the G-lens2 is arranged in the inner cavity of the ceramic sleeve 1, and a gap is reserved between the flat end surface of the G-lens2 and the front end surface of the ceramic sleeve 1; one end of the inserting core 3 is embedded in the G-lens2, and the other end of the inserting core 3 is connected with one end of the optical fiber 9; the ferrule assembly 12 is connected with the contact shell 4 through interference press fit; the spring 5 and the slip ring 6 are sleeved on the outer surface of the contact shell 4, one end of the spring 5 is pressed with a boss of the contact shell 4, and the other end of the spring 5 is pressed with one end of the slip ring 6; one end of the baffle ring 7 is connected with one end of the contact shell 4, and the other end of the slip ring 6 is pressed with one end of the baffle ring 7; the other end of the baffle ring 7 is sleeved on the outer surface of the optical fiber 9; part of the aramid fiber 10 is sleeved on the outer surface of the other end of the baffle ring 7, and the rest part of the aramid fiber 10 is sleeved on the outer surface of the optical fiber 9; the optical cable outer sheath 11 is sleeved on the outer surface of the aramid fiber 10; the press-fit sleeve 8 is sleeved on the outer surface of the other end of the baffle ring 7 and the outer surface of the optical cable outer sheath 11.
The ceramic sleeve 1 is internally and externally provided with chamfers, the external chamfers facilitate the butt joint and guiding of two contact pieces, and the internal chamfers facilitate the installation of the Glens 2; the ceramic sleeve 1 is provided with a glue filling hole for injecting ultraviolet glue solution and plays a role in observing the insertion position of the insert core.
G-lens2 is used as a beam expanding element, the diameter of the device is 1.0mm, the pitch is 0.23P, the two end faces are plated with antireflection films, one end of the lens is designed to be an 8-degree dip angle for improving the return loss performance, and the sharp corner part is subjected to chamfering treatment. G-lens2 and ceramic sleeve 1 are adhered by 353ND epoxy glue, when in loading, the sharp angle and one side of the glue filling hole should be aligned and inserted to the set position, the flat end surface is positioned at the inner chamfer edge of ceramic sleeve 1, so that a proper gap is reserved between the flat end surface of lens2 and the front end surface of ceramic sleeve 1.
The diameter of the ferrule 3 is 1.0mm, high-precision materials such as ceramics or glass can be adopted, the ferrule end face is ground after the ferrule is glued integrally with the optical fiber 9 through 353ND glue, the end face bevel angle is 8 degrees consistent with the angle of G-lens2, and the sharp corner part is subjected to chamfering treatment. And (5) plating an antireflection film on the end surfaces of the ferrule 3 and the optical fiber 9 after grinding.
And adjusting the ceramic sleeve 1 bonded with the G-lens2, the treated ferrule 3 and the treated optical fiber 9 through a multi-axis adjusting platform, and carrying out on-line test by butting with a standard line to find the optimal coupling position of the G-lens2 and the end face of the optical fiber 9. And (3) pouring Kong Nadian ultraviolet glue, irradiating ultraviolet light for curing, and heating and curing at 353ND glue at the tail part of the ceramic sleeve to prepare the ceramic sleeve 1, the G-lens2, the ferrule 3 and the optical fiber 9 into a ferrule assembly 12, as shown in fig. 2.
As shown in fig. 8, two 8 ° planes of the G-lens2 and the end face of the ferrule 3 should be parallel, and the distance should satisfy the following relationship:
where A is the focusing constant, r is the distance from a point in the lens to the central axis, and Δ is the relative refractive index difference between the center of the lens and the point in the lens (i.e., the point at r from the central axis).
As shown in fig. 3, the contact housing 4 includes a body, a boss 404, a guide key 401, a limit step 402, and a screw structure 403; the boss 404, the limiting step 402 and the thread structure 403 are all arranged on the outer surface of the body; the outer surface of the boss 404 is provided with a guide key 401; one end of the retainer 7 is connected to the screw structure 403.
The ferrule assembly 12 is connected with the contact shell 4 through interference press fit, and the contact shell 4 is provided with a guide key 401, so that the guide key 401 and the ceramic sleeve glue filling hole 101 keep consistent in direction during press fit. The contact housing is designed with a stop step 402 to ensure reliable contact mating when the cable is under stress. The tail of the shell is provided with a thread structure 403 for connecting and fixing with the baffle ring 7.
The springs 5 are used to provide axial pressure when the contacts are in contact, so that the contacts can maintain a tight fit in a vibrating environment.
The slip ring 6 can slide back and forth on the contact piece, and one chamfer end faces the front end of the contact piece to play a role of installation and guiding. The rear end face of the slip ring 6 is used for being clamped at the position of the fixed claw when the contact piece is installed.
As shown in fig. 4, the retainer ring 7 includes a second screw structure 701, a cylindrical portion 703, and a tail step 702; wherein the second screw structure 701 is integrally connected with the cylindrical portion 703; the tail step 702 is provided on the outer surface of the cylindrical portion 703; the second thread structure 701 is connected to the thread structure 403.
One end of the baffle ring 7 is a thread structure 701, and is screwed in cooperation with the tail thread 403 of the contact shell, so that a backward limiting function is achieved on the slip ring. 353ND glue solution is injected from the tail of the baffle ring 7 and fills the internal gap, so that the optical fiber 9 is adhered and fixed. The aramid fiber 10 is fixed between the baffle ring tail step 702 and the crimping sleeve 8 by adopting crimping pliers and a hexagonal crimping block crimping the crimping sleeve 8, wherein, as shown in fig. 9, the outer circle d1 of the baffle ring tail step and the inner diameter d2 of the crimping sleeve have the following constraint relation:
the aramid fiber can be pressed and fixed more tightly through the formula, and the situation that the contact cannot bear preset tension caused by over-tightening or over-loosening is avoided. The step is designed with a chamfer 702 structure to prevent the aramid fiber 10 from cutting at sharp corners and reducing the tensile strength of the contact.
G-lens2 is adopted as a beam expanding element, the diameter of the device is 1.0mm, the pitch is 0.23P, the two end faces are plated with antireflection films, in order to improve the return loss performance, one end of the lens2 is designed to be an 8-degree inclined angle, and the sharp corner part is subjected to chamfering treatment, so that collision damage is prevented. G-lens2 and ceramic sleeve 1 are adhered by 353ND epoxy glue, and the sharp angle and glue filling hole 101 should be aligned in the same direction and inserted into the set position when in loading. The flat end face of the lens is flush with the inner chamfer edge of the ceramic sleeve 1, and the distance between the flat end face of the lens and the end face of the front end face of the ceramic sleeve is about 0.2mm-0.3mm, so that a gap exists when two contact pieces are in butt joint, and the phenomenon that friction is generated when the end faces of the two lenses are in contact and fine particles damage the surface of the lens is prevented.
The ceramic sleeve 1 is internally and externally provided with chamfers, and the chamfers of the inner holes are used for guiding when installing lenses and inserting cores; the outer circular guide angle is used for butt joint guiding when a pair of contact pieces are in butt joint and when the coupling sleeve is inserted. The ceramic sleeve is provided with a glue filling hole 101 for injecting ultraviolet glue solution and observing the insertion position of the insert core, and plays a role of a positioning reference.
The diameter of the ferrule 3 is 1.0mm, an optical fiber hole with the diameter of 0.125mm is formed in the ferrule, and the ferrule end face is ground after the ferrule and the optical fiber 9 are glued together through 353ND glue. In order to improve the return loss performance, the oblique angle of the end face of the ferrule is 8 degrees and is consistent with the angle of G-lens, and the sharp corner part is subjected to chamfering treatment to prevent damage. And (5) plating an antireflection film on the end surfaces of the ferrule 2 and the optical fiber 9 after grinding.
And (3) adjusting the ceramic sleeve bonded with the G-lens, the treated ferrule and the treated optical fiber through a multi-axis adjusting platform, connecting the ceramic sleeve with a standard line through an SC coupling sleeve for online testing, and determining the lowest loss point, namely finding the optimal coupling position of the G-lens and the optical fiber. When the insert core 3 is installed, the sharp angle is kept in the opposite direction of the glue filling hole 101, and the glue filling hole 101 is used for observation and confirmation, so that the adjustment time can be reduced, and the efficiency can be improved. And ultraviolet glue is injected into the glue injection hole 101 and irradiated with ultraviolet light for curing, and then the glue is heated and cured at the tail 353ND of the ceramic sleeve, so that the ceramic sleeve, the G-lens, the ferrule and the optical fiber are assembled into the ferrule assembly 12.
The ferrule assembly 12 is connected with the contact shell 4 through interference press fit, and the contact shell is provided with a guide key 401, so that the guide key 401 and the ceramic sleeve glue filling hole 101 keep consistent in direction during press fit. The contact housing is designed with a stop step 402 that prevents the slip ring from continuing to move forward when the cable is stressed, so that the contact can still ensure reliable mating. The spring 5, the slip ring 6 and the baffle ring 7 are sequentially arranged outside the shell, the tail part of the shell is provided with a thread structure for being connected and fixed with the baffle ring, and thread glue is dispensed at the thread position for anti-loosening treatment.
The spring 5 is used for providing axial pressure when the contact members are butted, so that the contact members can be kept tightly fitted under the vibration environment.
The slip ring 6 can slide back and forth over the contact piece, and the designed steps are used for clamping the contact piece at the position of the fixed claw.
One end of the baffle ring 7 is of a threaded structure, is screwed with the tail thread of the contact shell 4 in a matched manner, and has a backward limiting function on the slip ring 6. 353ND glue solution is injected from the tail part of the baffle ring, and the inner gap is filled, so that the optical fiber is adhered and fixed. The stop ring tail step 702 is used for being matched with the crimping sleeve 8 to compress the aramid fiber 10, so that friction is increased. The step design has the chamfer structure, prevents aramid fiber from cutting at sharp angle department and reducing contact tensile strength. The end may be crimped to the cable jacket 11.
After the contact is installed in the connector, the step of the front end face of the shell is propped against the bottom of the mounting hole, and the fixing claw of the connector is clamped at the rear end face of the slip ring. The guide key 401 is engaged with a guide groove in the connector mounting hole, so that the contact is prevented from rotating relative to the connector, thereby improving the stability of optical performance. The contact is of a neutral structure and can be installed at the pin end or the socket end. The contact is mounted at the pin end as shown in fig. 5 and at the socket end as shown in fig. 6. After the connector header shell is inserted, the contact piece butt joint schematic diagram is shown in fig. 7, and the end surfaces of the two contact piece ceramic sleeves are near the center position of the coupling sleeve.
According to the invention, the ceramic sleeve, the G-lens, the ferrule and the optical fiber are manufactured into the ferrule assembly, so that the function of expanding the optical signal beam is achieved, and the influence of optical performance degradation caused by shielding of dust on an optical communication area is reduced; according to the invention, through the design of the gap between the front end surface of the ceramic sleeve and the end surface of the lens, the lens is ensured not to be contacted when the two contact pieces are in butt joint, so that the phenomenon of friction damage to the end surface of the lens caused by vibration is avoided; according to the invention, through the design of the glue filling holes, the problem that ultraviolet glue cannot be quickly cured in the ceramic sleeve 1 due to the fact that ultraviolet cannot penetrate the ceramic sleeve is solved; the contact assembly process takes the guide key-glue filling hole as a reference, so that the discreteness of all optical properties is ensured to be small; according to the invention, the anti-rotation effect is achieved through the design of the guide key on the contact shell, so that the contact does not rotate in the circumferential direction in the connector, and the product stability is good; according to the invention, through the limit step structure in the contact shell, the reliable abutting effect of the contact can be ensured when the optical cable is stressed; according to the invention, the quick assembly effect of the contact is achieved through the threaded structure of the baffle ring and the contact shell.
Although the present invention has been described in terms of the preferred embodiments, it is not intended to be limited to the embodiments, and any person skilled in the art can make any possible variations and modifications to the technical solution of the present invention by using the methods and technical matters disclosed above without departing from the spirit and scope of the present invention, so any simple modifications, equivalent variations and modifications to the embodiments described above according to the technical matters of the present invention are within the scope of the technical matters of the present invention.
Claims (6)
1. A detachable expanded beam fiber optic contact, comprising: the device comprises a ferrule assembly (12), a contact shell (4), a spring (5), a slip ring (6), a baffle ring (7), a crimping sleeve (8), aramid fibers (10) and an optical cable outer sheath (11); wherein, the liquid crystal display device comprises a liquid crystal display device,
the ferrule assembly (12) comprises a ceramic sleeve (1), a G-lens (2), a ferrule (3) and an optical fiber (9);
the G-lens (2) is arranged in the inner cavity of the ceramic sleeve (1), and a gap is reserved between the flat end face of the G-lens (2) and the front end face of the ceramic sleeve (1);
one end of the inserting core (3) is embedded in the G-lens (2), and the other end of the inserting core (3) is connected with one end of the optical fiber (9);
the ferrule assembly (12) is connected with the contact shell (4) through interference press fit;
the spring (5) and the slip ring (6) are sleeved on the outer surface of the contact shell (4), one end of the spring (5) is pressed with a boss of the contact shell (4), and the other end of the spring (5) is pressed with one end of the slip ring (6);
one end of the baffle ring (7) is connected with one end of the contact shell (4), and the other end of the slip ring (6) is pressed with one end of the baffle ring (7); the other end of the baffle ring (7) is sleeved on the outer surface of the optical fiber (9);
part of the aramid fiber (10) is sleeved on the outer surface of the other end of the baffle ring (7), and the rest of the aramid fiber (10) is sleeved on the outer surface of the optical fiber (9);
the optical cable outer sheath (11) is sleeved on the outer surface of the aramid fiber (10);
the crimping sleeve (8) is sleeved on the outer surface of the other end of the baffle ring (7) and the outer surface of the optical cable outer sheath (11);
one end of the ceramic sleeve (1) is provided with an external chamfer, the other end of the ceramic sleeve (1) is provided with an internal chamfer, and the internal chamfer is convenient for the installation of the G-lens (2);
the ceramic sleeve (1) is provided with a glue filling hole (101) for injecting ultraviolet glue solution and playing a role in observing the insertion position of the inserting core;
the diameter of the G-lens (2) is 1.0mm, the pitch is 0.23P, and both end faces of the G-lens (2) are plated with antireflection films; one end of the G-lens (2) is provided with an inclination angle of 8 degrees, a sharp corner part is subjected to chamfering treatment, and the G-lens (2) and the ceramic sleeve (1) are bonded by 353ND epoxy glue;
the distance between the G-lens (2) and the ferrule (3) satisfies the following relationship:
wherein A is a focusing constant, r is a distance from a point to a central axis in the G-lens, and delta is a relative refractive index difference between the center of the G-lens and the point.
2. The detachable expanded beam fiber optic contact of claim 1, wherein: the diameter of the inserting core (3) is 1.0mm, the inserting core (3) and the optical fiber (9) are adhered through 353ND glue, the end face oblique angle of one end of the inserting core (3) is 8 degrees, and the end faces of the two ends of the inserting core (3) are plated with antireflection films.
3. The detachable expanded beam fiber optic contact of claim 1, wherein: the contact shell (4) comprises a body, a boss (404), a guide key (401), a limiting step (402) and a thread structure (403); wherein, the liquid crystal display device comprises a liquid crystal display device,
the boss (404), the limiting step (402) and the thread structure (403) are all arranged on the outer surface of the body;
the outer surface of the boss (404) is provided with a guide key (401);
one end of the baffle ring (7) is connected with the thread structure (403).
4. A detachable expanded beam fiber optic contact according to claim 3, wherein: the baffle ring (7) comprises a second thread structure (701), a cylinder part (703) and a tail step (702); wherein, the liquid crystal display device comprises a liquid crystal display device,
the second thread structure (701) is integrally connected with the cylindrical portion (703);
the tail step (702) is arranged on the outer surface of the cylinder part (703);
the second thread structure (701) is connected to the thread structure (403).
5. The detachable expanded beam fiber optic contact of claim 4, wherein: the outer circle diameter d1 of the tail step (702) and the inner diameter d2 of the crimping sleeve (8) have the following constraint relation:
6. the detachable expanded beam fiber optic contact of claim 4, wherein: and 353ND glue solution is injected into the tail part of the baffle ring (7) and fills the internal gap, so that the optical fiber (9) is adhered and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110335253.4A CN113219595B (en) | 2021-03-29 | 2021-03-29 | Detachable beam-expanding type optical fiber contact |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110335253.4A CN113219595B (en) | 2021-03-29 | 2021-03-29 | Detachable beam-expanding type optical fiber contact |
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| Publication Number | Publication Date |
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| CN113219595A CN113219595A (en) | 2021-08-06 |
| CN113219595B true CN113219595B (en) | 2023-10-10 |
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| CN202110335253.4A Active CN113219595B (en) | 2021-03-29 | 2021-03-29 | Detachable beam-expanding type optical fiber contact |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003302557A (en) * | 2002-04-12 | 2003-10-24 | Namiki Precision Jewel Co Ltd | Ferrule integrated with optical axis corrective lens and its manufacturing method |
| TW201626019A (en) * | 2014-11-14 | 2016-07-16 | 住友電氣工業股份有限公司 | GRIN lens array, lens-mounted connector, and lens-mounted connector system |
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| JP3822080B2 (en) * | 2001-09-27 | 2006-09-13 | 富士通株式会社 | Receptacle type optical module and production method thereof |
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| JP2003302557A (en) * | 2002-04-12 | 2003-10-24 | Namiki Precision Jewel Co Ltd | Ferrule integrated with optical axis corrective lens and its manufacturing method |
| TW201626019A (en) * | 2014-11-14 | 2016-07-16 | 住友電氣工業股份有限公司 | GRIN lens array, lens-mounted connector, and lens-mounted connector system |
| EP3133427A1 (en) * | 2015-08-21 | 2017-02-22 | TE Connectivity Corporation | Expanded beam connector with discrete alignment assembly |
| WO2018014209A1 (en) * | 2016-07-19 | 2018-01-25 | 乐矣天 | Optical fibre tunable filter |
| CN208636463U (en) * | 2018-08-22 | 2019-03-22 | 沈阳兴华航空电器有限责任公司 | A kind of extending type optical fiber contact |
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