WO2023281979A1 - 光コネクタ - Google Patents
光コネクタ Download PDFInfo
- Publication number
- WO2023281979A1 WO2023281979A1 PCT/JP2022/023342 JP2022023342W WO2023281979A1 WO 2023281979 A1 WO2023281979 A1 WO 2023281979A1 JP 2022023342 W JP2022023342 W JP 2022023342W WO 2023281979 A1 WO2023281979 A1 WO 2023281979A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flange
- sleeve
- ferrule
- optical fiber
- ferrule assembly
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 71
- 239000013307 optical fiber Substances 0.000 claims abstract description 73
- 230000002093 peripheral effect Effects 0.000 claims abstract description 24
- 238000009434 installation Methods 0.000 description 36
- 230000000052 comparative effect Effects 0.000 description 33
- 238000010586 diagram Methods 0.000 description 27
- 239000000835 fiber Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 239000002184 metal Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 239000003365 glass fiber Substances 0.000 description 6
- 239000007769 metal material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000010287 polarization Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- G02B6/02—Optical fibres with cladding with or without a coating
-
- 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
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/024—Optical fibres with cladding with or without a coating with polarisation maintaining properties
Definitions
- a single-core optical connector attached to the tip of an optical fiber such as a multi-core optical fiber (hereinafter referred to as "MCF") or a polarization-maintaining optical fiber (hereinafter referred to as "PMF”) has a A structure is provided for maintaining the alignment of the optical fiber.
- MCF multi-core optical fiber
- PMF polarization-maintaining optical fiber
- the ferrule assembly housed in the housing is restrained from changing its housed position in the housing by the elastic force (restoring force) of the spring material, and the fiber axis ( Azimuth variation around the center axis of the optical fiber to which the ferrule assembly is fixed is suppressed (maintenance of alignment state).
- An optical connector of the present disclosure includes an optical fiber, a ferrule assembly attached to the tip portion of the optical fiber, and a housing.
- the housing has an inner wall surface defining a space for housing the ferrule assembly, and a positioning portion defining a housing position for the ferrule assembly.
- the positioning part is provided on the inner wall surface and has an inclined surface that is inclined with respect to the central axis of the tip portion of the optical fiber and that a part of the ferrule assembly abuts, and the opposite side of the inclined surface with respect to the ferrule assembly. and a facing surface on which a portion of the ferrule assembly abuts.
- a ferrule assembly includes a ferrule and a sleeve member.
- the sleeve member comprises a sleeve having front and rear end faces facing each other, and a flange mounted on the outer peripheral surface of the sleeve. Further, the sleeve has a through hole connecting the front end face and the rear end face, and into which a part of the ferrule is inserted from the front end face side with the optical fiber penetrating therethrough.
- the flange has a lip at least partially abutted against the inclined surface and the opposing surface of the positioning portion.
- the portion including the edge facing at least one of the inclined surface and the opposing surface of the positioning portion has a deformation absorbing portion for suppressing deformation of the flange and a deformation absorbing portion. and two abutting portions that are sandwiched and contact at least one of the inclined surface and the opposing surface of the positioning portion.
- FIG. 1 is a diagram showing the structure of the main part in the optical connector of the present disclosure.
- FIG. 2 is a diagram for explaining various assembling processes (including alignment work) of the ferrule assembly.
- FIG. 3 is a diagram showing the internal structure of the optical connector of the present disclosure.
- FIG. 4 is a diagram showing configurations of various sleeve members applicable to the ferrule assembly in the optical connector of the present disclosure.
- FIG. 5 is a diagram for explaining problems of the ferrule assembly according to the comparative example.
- 6A and 6B are diagrams showing states of a sleeve member (sleeve+flange) applied to various optical connectors (MU type, LC type, SC type) before and after flange press fitting in a ferrule assembly of a comparative example.
- FIG. 7 is a diagram showing the state of a sleeve member applied to various embodiments (MU type, LC type, and SC type) before and after sleeve press-fitting in the ferrule assembly of the optical connector of the present disclosure (positioning part A configuration in which the installation reference line LR defined on the facing surface 20B is aligned with the edge line E2 of the flange).
- FIG. 7 is a diagram showing the state of a sleeve member applied to various embodiments (MU type, LC type, and SC type) before and after sleeve press-fitting in the ferrule assembly of the optical connector of the present disclosure (positioning part A configuration in which the installation reference line LR defined on the facing surface 20B is aligned with the edge line E2 of the flange).
- FIG. 7 is a diagram showing the state of a sleeve member applied to various embodiments (MU type, LC type, and SC type) before and after sleeve press-fitting in the ferrul
- FIG. 8 is a diagram showing the state of a sleeve member applied to various embodiments (MU type, LC type, SC type) before and after sleeve press-fitting in the ferrule assembly of the optical connector of the present disclosure (positioning part A configuration in which the installation reference line LR defined by the inclined surface 20A is aligned with the edge line E2 of the flange).
- FIG. 9 is an installation state (after press-fitting of the sleeve) of the flange of the sleeve member applied to the MU-type embodiment in the ferrule assembly of the optical connector of the present disclosure and having different numbers of edges provided with deformation absorbing portions. , together with a comparative example.
- FIG. 10 is a diagram showing the results of evaluating the shape change of the flange (MU type) when the sleeve is press-fitted for the comparative example and the present embodiment.
- the ferrule assembly disclosed in Patent Document 1 is composed of a ferrule fixed to the tip of an optical fiber, a sleeve into which the ferrule is inserted into an opening on the front end face, and a flange attached to the sleeve.
- Patent Document 1 discloses a structure in which a projection is provided on the outer peripheral surface of the sleeve to prevent the flange from moving toward the ferrule.
- the flange of the ferrule assembly having the structure described above, particularly the linear edge is pressed against the positioning portion provided on the inner wall of the housing by a spring member housed in the rear of the housing. Therefore, according to the push-pull type optical connector, the ferrule assembly is held at a predetermined position with respect to the housing, and at the same time, the alignment state of the optical fiber is fixed with respect to the optical connector.
- the present disclosure has been made to solve the problems described above, and aims to provide an optical connector having a structure for suppressing fluctuations in the state of alignment of the optical fiber with respect to the housing.
- the optical connector of the present disclosure includes an optical fiber, a ferrule assembly attached to the tip portion of the optical fiber, and a housing.
- the housing has an inner wall surface defining a space for housing the ferrule assembly, and a positioning portion defining a housing position for the ferrule assembly.
- the positioning part is provided on the inner wall surface and has an inclined surface that is inclined with respect to the central axis of the tip portion of the optical fiber and that a part of the ferrule assembly abuts, and the opposite side of the inclined surface with respect to the ferrule assembly. and a facing surface on which a portion of the ferrule assembly abuts.
- a ferrule assembly includes a ferrule and a sleeve member.
- a ferrule is attached to the tip portion including the end face of the optical fiber.
- the sleeve member includes a sleeve having a front end face and a rear end face facing each other, and a flange provided on the outer peripheral surface of the sleeve. Further, the sleeve has a through-hole connecting the front end face and the rear end face and into which a part of the ferrule is inserted from the front end face side.
- the ferrule may be attached to the tip portion including the end face of the optical fiber to be introduced into the through-hole in a state where the ferrule is partially inserted into the through-hole.
- the ferrule may be partially inserted into the through-hole with the tip portion of the optical fiber (which has passed through the sleeve through-hole) attached in advance.
- the flange has a lip at least partially abutted against the inclined surface and the opposing surface of the positioning portion.
- the portion including the rim that faces at least one of the inclined surface and the opposing surface of the positioning portion has a deformation absorbing structure for suppressing deformation of the flange, particularly the outer peripheral portion of the flange. and two abutting portions that sandwich the deformation absorbing portion and contact at least one of the inclined surface and the opposing surface of the positioning portion.
- the outer periphery of the flange may deform due to the thermal expansion and contraction of the adhesive used to fix the parts together.
- a press-fitting process is performed between the metal parts, so in this case also, there is a possibility that the outer peripheral portion of the flange will be deformed.
- the optical connector of the present disclosure since the deformation absorbing portion is provided on the outer peripheral portion of the flange, the contact state between the two contact portions sandwiching the deformation absorbing portion and the surface of the positioning portion is stable. maintained. As a result, according to the optical connector of the present disclosure, it is possible to maintain the alignment state of the optical fiber with respect to the housing.
- the deformation absorbing portion preferably includes a notch portion for separating a portion of the flange from the positioning portion by a predetermined distance. In this case, even if the flange is deformed, the deformed portion can be prevented from directly contacting the inclined surface of the positioning portion, and as a result, the alignment state of the optical fiber with respect to the housing can be maintained.
- the sleeve member is a single member made of plastic material (synthetic resin), metal material, or the like, and each of the above sleeve and flange is a part of the single member (resin It may be a molded part or a part molded by metal working). In this case, it is possible to reduce deformation of the outer peripheral portion of the flange due to adhesion of the ferrule to the sleeve member or press-fitting of the metal ferrule to the metal sleeve member.
- the optical connector further comprises an elastic body that abuts against the flange from the rear end face side of the sleeve and presses the rim of the flange against the inclined surface of the positioning part. good too. This makes it possible to realize a push-pull optical connector that uses an elastic body to stably fix the installation position of the ferrule assembly in the housing.
- the optical fiber is a multi-core optical fiber or a polarization maintaining optical fiber as an optical fiber that needs to be aligned along the circumferential direction around its central axis (fiber axis). preferably included.
- the alignment state of the optical fiber can be maintained satisfactorily.
- each aspect listed in this [Description of Embodiments of the Disclosure] column is applicable to each of all the remaining aspects, or to all combinations of these remaining aspects. .
- a ferrule assembly which will be described later and constitutes a part of the optical connector of the present disclosure, is composed of a ferrule and a sleeve member.
- a ceramic material or a metal material is suitable for the ferrule.
- the sleeve member includes a separate sleeve member in which a sleeve and a flange are separated, and an integrated sleeve member having portions respectively corresponding to the sleeve and the flange, and is preferably made of plastic material or metal material, for example. In the case of a separate sleeve member, a combination of plastic and metal materials is also applicable.
- the components can be fixed together by, for example, an adhesive or a press fit. 1 to 10 described below, at least the sleeve member (sleeve and flange) among the constituent members of the ferrule assembly is made of metal material, and the constituent elements are fixed by press fitting. Also, the ferrule is made of a metal material or ceramics, and is also press-fitted into the sleeve member.
- FIG. 1 is a diagram showing the structure of the main part of the optical connector of the present disclosure (referred to as "connector appearance and storage parts" in FIG. 1). Specifically, an example of the appearance of a push-pull type optical connector 10 is shown at the top (denoted as “single-core connector” in FIG. 1) as an example of the optical connector of the present disclosure.
- the second row (denoted as “ferrule assembly” in FIG. 1) shows the structure of the ferrule assembly 100 installed inside the optical connector 10 .
- MCF50A multi-core optical fiber
- FIG. 1 At the bottom (referred to as “connector front face (PMF application example)” in FIG. 1), another example of the optical fiber 50 to which the ferrule 110 is attached is an optical connector including a PMF 50B (polarization maintaining optical fiber) end face. A front view of 10 is shown.
- PMF 50B polarization maintaining optical fiber
- a ferrule 110 is attached to the tip portion (the glass fiber 51 from which the resin coating has been removed) of the optical fiber 50 including the end face, and the rear housing 30 protects the optical fiber 50 extending from the rear housing 30.
- a boot 40 is attached for this purpose.
- a ferrule assembly 100 shown in the second row of FIG. 1 is housed within a housing composed of a front housing 20 and a rear housing 30, and includes a ferrule 110 and a sleeve member.
- the sleeve member is composed of a sleeve 120 and a flange 130A.
- the optical fiber 50 has a glass fiber 51 and a resin coat provided on the outer peripheral surface of the glass fiber 51, and the resin coat covering the tip portion including the end face of the optical fiber 50 is removed.
- the ferrule 110 is attached to the tip portion of the optical fiber 50 from which the resin coating has been removed in this manner via an adhesive (for example, thermosetting resin or ultraviolet curable resin).
- the sleeve 120 has a front end face 120a and a rear end face 120b facing each other and a through hole.
- the rear end of the ferrule 110 is press-fitted into the through hole of the sleeve 120 from the front end face side while the front end face 120a and the rear end face 120b are connected and the optical fiber 50 is passed therethrough.
- the optical fiber 50 may be inserted through the ferrule 110 after the rear portion of the ferrule 110 is press-fitted into the front end face side of the through hole of the sleeve 120 .
- the flange 130A is provided on the front side of the sleeve 120 and has a through hole 132, a front surface 130a matching the front end surface 120a of the sleeve 120, a rear surface 130b facing the front surface 130a, and an outer peripheral surface.
- the front end surface 120a side of the sleeve 120 is press-fitted into the through hole 132 of the flange 130A from the rear surface 130b toward the front surface 130a.
- the rear end surface 120b of the sleeve 120 may be press-fitted from the front surface 130a toward the rear surface 130b.
- the front surface 130a of the flange 130A includes a lip 135 that abuts against the inclined surface and the opposing surface of the positioning portion of the housing (the surface located on the opposite side of the inclined surface with respect to the flange 130A).
- the "rim” includes the chamfered portion, and part of the "rim” including the chamfered portion comes into contact with the inclined surface of the positioning portion of the housing. touched.
- a spring member 140 which will be described later, is in contact with the rear surface 130b of the flange 130A.
- the rims 135 facing the inclined surface or the opposing surface include a deformation absorbing portion (the sleeve 120 in the through hole 132).
- a notch portion 131a is provided as a portion that absorbs deformation that occurs in the flange 130A due to the front end face 120a of the flange 130A being press-fitted and that maintains the linear shape of the edge 135 of the flange 130A.
- two abutment portions sandwiching the notch 131a are positioned on the surface of the positioning portion facing the rim 135 (at least one of the inclined surface and the opposing surface). come into contact with
- the front view of the optical connector 10 (front view of the connector (MCF application example)) shown in the third stage of FIG. Ferrule 110 attached to fiber 51A), sleeve 120 into which ferrule 110 is inserted, and flange 130A are shown.
- the MCF 50A includes multiple cores 52A each extending along the fiber axis AX (the central axis of the MCF 50A) and a common clad 53A surrounding each of these multiple cores 52A.
- Line L A indicates the reference orientation for rotational alignment of MCF 50A (orientation with an azimuth angle of 0°)
- line L R indicates the installation reference line of ferrule assembly 100 along rim 135 of flange 130A (the surface of the positioning portion). line defined above).
- the line LA indicating the reference orientation and the installation reference line LR are parallel .
- the front view of the optical connector 10 (connector front (PMF application example)) shown at the bottom of FIG. ), sleeve 120 into which ferrule 110 is inserted, and flange 130A.
- the PMF 50B includes cores 52B extending along the fiber axis AX (central axis of the PMF 50B), stress applying portions 54 arranged to sandwich the core 52B, and common cladding 53B surrounding the core 52B and the stress applying portions 54, respectively. And prepare.
- the line LA indicating the reference orientation and the installation reference line LR are parallel .
- FIG. 2 is a diagram for explaining various assembling processes (including alignment work) of the ferrule assembly (referred to as "ferrule assembly assembling process" in FIG. 2).
- the upper part (denoted as “type 1” in FIG. 2) is a diagram for explaining a method of aligning the optical fiber 50 with respect to the pre-assembled ferrule assembly 100 .
- the middle section (denoted as “Type 2” in FIG. 2) shows a method of aligning the optical fiber 50 with the ferrule 110 attached to the tip portion with respect to the flange 130A integrated with the sleeve 120 to assemble the ferrule assembly 100. It is a figure for explaining.
- the lower part (denoted as "type 3" in FIG. 2) describes a method of assembling the ferrule assembly 100 after aligning the optical fiber 50 with the ferrule 110 and the sleeve 120 attached to the tip portion with respect to the flange 130A. It is a figure for doing.
- ferrule assembly 100 comprises ferrule 110, sleeve 120 having front end face 120a and rear end face 120b, and flange 130A having front face 130a and rear face 130b.
- the rear part of the ferrule 110 is press-fitted into the opening of the front end face 120a of the sleeve 120 (the opening of the through hole), and the front end face 120a side of the sleeve 120 is press-fitted into the through hole 132 of the flange 130A so that the ferrule 110 penetrates.
- Alignment rotational movement of the optical fiber 50 along the direction indicated by arrow S1 is performed.
- the ferrule 110 is press-fitted into the opening of the front end face 120 a of the sleeve 120 while attached to the tip of the optical fiber 50 .
- the optical fiber 50 is maintained through the through-hole of the already assembled structure consisting of the ferrule 110 and the sleeve 120 .
- the ferrule 110 side (the front portion of the sleeve 120) of the structure (the ferrule 110 and the sleeve 120) attached to the tip portion of the optical fiber 50 is press-fitted into the through hole 132 of the flange 130A.
- the front view of the ferrule assembly 100 attached to the optical fiber 50 after alignment matches the front view shown in the third and bottom rows of FIG.
- FIG. 3 is a diagram showing the internal structure of the optical connector of the present disclosure (referred to as "connector internal structure” in FIG. 3).
- the upper part (denoted as “cross-sectional structure (II cross section)” in FIG. 3) is a cross-sectional view of the optical connector 10 taken along line II shown in the uppermost part of FIG. .
- the middle part (denoted as “cross-sectional structure (II-II cross section)” in FIG. 3) is a cross-sectional view of the optical connector 10 taken along line II-II shown in the uppermost part of FIG.
- the lower part (denoted as “cross-sectional structure (III-III cross section)” in FIG. 3) is a cross-sectional view of the optical connector 10 taken along line III-III shown in the uppermost part of FIG.
- the optical connector 10 has a housing for stably housing the ferrule assembly 100 attached to the tip portion of the optical fiber 50 .
- This housing is composed of a front housing 20 and a rear housing 30 fitted into the front housing 20 .
- a front end of a ferrule 110 that constitutes a part of the ferrule assembly 100 protrudes from the front opening of the front housing 20 .
- the inner wall surface of the front housing 20 is provided with an inclined surface 20A and a facing surface 20B with which the rim 135 of the flange 130A of the ferrule assembly 100 to be housed contacts.
- a positioning portion is defined by the inclined surface 20A and the opposing surface 20B.
- the facing surface 20B is a plane parallel to the fiber axis AX, but it may be a surface inclined with respect to the fiber axis AX, like the inclined surface 20A.
- a clearance is provided between the inner wall surface of the front housing 20 and the side surface of the flange 130A to allow manufacturing variations in each part.
- a spring material 140 is housed inside the rear housing 30 as an elastic body. It is contracted by being sandwiched between the housed ferrule assembly 100 and the rear portion of the rear housing 30 .
- a through hole for drawing out the optical fiber 50 is provided in the rear portion of the rear housing 30 .
- the ferrule assembly 100 receives an elastic force (restoring force of the spring member 140) from the spring member 140, and the rim 135 included in the front surface 130a of the flange 130A is provided on the inner wall surface of the front housing 20 on the inclined surface 20A (positioning force). included in the part). At this time, the contact portions sandwiching the notch portion 131a as the deformation absorbing portion come into contact with the facing surface 20B of the positioning portion.
- a notch portion 131a may be provided as a deformation absorbing portion on each side (rim 135) defining the front surface 130a of the flange 130A.
- a spring material 140 is brought into contact with the rear surface 130b of the flange 130A.
- each lip 135 may be provided with one or more deformation absorbers.
- the opposing surface 20B is in contact with two abutting portions sandwiching the corresponding notch portion 131a. In this contact state, the notch 131a is separated from the facing surface 20B by a predetermined distance.
- a pair of surfaces (inclined surface 20A and facing surface 20B) are shown as the positioning portion, but each side that defines the shape of the front surface 130a of the flange 130A.
- two or more pairs of surfaces may be provided on the inner wall surface of the front housing 20 .
- the sleeve member into which the ferrule 110 is inserted into the opening may be constructed by combining the sleeve 120 and the flange 130A, or as shown in the upper part of FIG.
- a portion 510 (hereinafter referred to as "sleeve portion") may function as a sleeve
- another portion 520 (hereinafter referred to as "flange portion”) may function as a flange.
- the installed state of the flange 130A inside the front housing 20 is as shown in the lower part of FIG. That is, when the ferrule assembly 100 is installed in the housing of the optical connector 10, the contact portion of the flange 130A sandwiching the notch portion 131a is brought into contact with the facing surface 20B of the positioning portion, and as a result, the flange 130A The state in which the installation reference line LR and the facing surface 20B match is maintained.
- deformed portions 220 are formed on each side of the flange 130A caused by the press-fitting of the ferrule 110 into the sleeve 120 and the press-fitting of the sleeve 120 into the through-hole 132 of the flange 130A. Further, in the case of the integrated sleeve member 500 as well, deformation of the flange portion 520 caused by the press fitting of the ferrule 110 into the sleeve portion 510 occurs. However, since the deformed portion 220 of the side surface provided with the notch portion 131a is absorbed by the notch portion 131a, the variation of the installation reference line LR defined by the two contact portions is suppressed.
- FIG. 4 is a diagram showing configurations of various sleeve members applicable to the ferrule assembly in the optical connector of the present disclosure.
- the upper part (denoted as “separate type” in FIG. 4) is a diagram showing the configuration of a separable sleeve member in which the sleeve 120 and the flange 130A constituting the sleeve member are separate members.
- the lower part (denoted as “integrated type” in FIG. 4) is a diagram showing the structure of an integrated sleeve member in which a flange and a sleeve are integrally formed.
- the separable sleeve member shown in the upper part of FIG. 4 is composed of a sleeve 120 and a flange 130A.
- the sleeve 120 has a front end face 120a and a rear end face 120b, and a through hole connecting the front end face 120a and the rear end face 120b.
- the flange 130A has a through hole 132 into which the front end surface 120a side of the sleeve 120 is press-fitted, and has a front surface 130a and a rear surface 130b.
- the front end face 120a of the sleeve 120 and the front face 130a of the flange 130A are substantially coincident (the front end face 120a of the sleeve 120 may protrude somewhat from the front face 130a of the flange 130A, and may be recessed). may be used).
- Both the front surface 130a and the rear surface 130b are rectangular.
- the shape of the front surface 130a varies from the edge line E1 to the edge line E1, which indicates the position of the edge 135 that abuts the corresponding positioning portion (e.g., the inclined surface 20A and the opposing surface 20B shown in the upper part of FIG. 3).
- Edges 135 of flange 130A defined by line E4 and indicated by edge line E2 in the illustrated example are each provided with notch 131a as a deformation absorbing portion.
- two abutment portions (portions aligned with the edge line E2) sandwiching the notch portion 131a are abutted against the facing surfaces 20B of the corresponding positioning portions.
- the integral sleeve member 500 shown in the lower part of FIG. 4 includes a sleeve portion 510 functioning as a sleeve and a flange portion 520 functioning as a flange. Further, the integral sleeve member 500 is provided with a through hole 530 into which a part of the ferrule 110 is press-fitted while the optical fiber 50 having the ferrule 110 attached to the tip portion is passed therethrough.
- the front face 525 of the flange portion 520 of the unitary sleeve member 500 on which the opening of the through hole 530 is located is square.
- the shape of the front face 525 has lip lines indicating the position of the lip 135 when each abuts against its corresponding locator (e.g., the inclined face 20A and the facing face 20B of the locator shown at the top of FIG. 3).
- the edge 135 of the flange portion 520 defined by the edge line E4 from E1 and indicated by the edge line E2 is provided with a notch portion 521a as a deformation absorbing portion.
- the portion corresponding to the edge line E2 abuts the opposing surface 20B of the corresponding positioning portion.
- FIG. 5 is a diagram for explaining problems with the ferrule assembly according to the comparative example. Specifically, the upper part (denoted as "before press-fitting” in FIG. 5) shows the state before the sleeve is press-fitted into the opening of the flange. The lower part (denoted as “after press-fitting” in FIG. 5) shows the state after the sleeve is press-fitted into the opening of the flange.
- a ferrule assembly 200 according to a comparative example shown in the upper part of FIG. 5 is composed of a ferrule 110 attached to the tip portion of the optical fiber 50 and a separable sleeve member.
- the separable sleeve member is composed of a sleeve 120 into which one end of a ferrule 110 is press-fitted, and a flange 210A.
- the sleeve 120 has a front end face 120a and a rear end face 120b, and a through hole connecting the front end face 120a and the rear end face 120b.
- the flange 210A has a through hole 211 into which the front end surface 120a side of the sleeve 120 is press-fitted.
- Both surfaces of the flange 210A where the opening of the through hole 211 is located are square.
- the shape of the surface located on the front end surface 120a side of the sleeve 120 (hereinafter referred to as "flange surface") is defined by edge lines E1 to E4 indicating the positions of the edges 135.
- edge lines E1 to E4 indicating the positions of the edges 135.
- no deformation absorbing portion is provided on any edge 135 of the flange 210A indicated by edge lines E1 to E4.
- the front end surface 120a of the sleeve 120 when the front end surface 120a of the sleeve 120 is press-fitted into the through hole 211 of the flange 210A, the front end surface 120a of the sleeve 120 and the flange surface of the flange 210A substantially match (the sleeve 120 front end face 120a of the flange 210A may protrude or recede somewhat from the flange face of flange 210A). Further, due to such press-fitting of the sleeve 120, the flange 210A is deformed in the direction indicated by the arrow S2, and a deformed portion 220 protruding outward from the edge line E1 beyond the edge line E4 is formed. be.
- the fiber axis AX2 of the tip portion of the optical fiber 50 to which the ferrule 110 is attached is inclined with respect to the inner wall surface of the housing.
- the rim 135 of the flange 210A of the ferrule assembly 200 according to the comparative example is provided on the inner wall of the housing at substantially one point due to the curvature of the rim 135 caused by the deformed portion 220. defined by the surface).
- the orientation of the ferrule assembly 200 around the fiber axis AX2 can be changed with respect to the inclined surface 20A and the opposing surface 20B, and the alignment state of the optical fiber 50 with respect to the optical connector 10 becomes unstable. put away.
- FIG. 6A and 6B are diagrams showing states before and after sleeve press-fitting of a sleeve member (sleeve + flange) applied to various optical connectors (MU type, LC type, SC type) in a ferrule assembly of a comparative example.
- MU type the upper part of FIG. 6
- LC type the state of a sleeve member applied to an MU type optical connector before and after press-fitting the sleeve.
- the middle part of FIG. 6 (denoted as "LC type" in FIG.
- FIG. 6 is a diagram showing the state of a sleeve member applied to an LC type optical connector before and after press-fitting the sleeve as a comparative example.
- the lower part of FIG. 6 (denoted as "SC type" in FIG. 6) shows, as a comparative example, the state of a sleeve member applied to an SC type optical connector before and after the sleeve is press-fitted.
- the edges of the flanges 210A, 210B, and 210C shown in FIG. 6 correspond to the edges 135 on the front side of the flange 210A shown in FIG.
- FIG. 7A and 7B are diagrams showing states of a sleeve member applied to various embodiments (MU type, LC type, SC type) as a ferrule assembly of an optical connector of the present disclosure before and after press-fitting of the sleeve.
- a structure is shown in which the installation reference line LR defined by the facing surface 20B and the edge line E2 of the flange 130A are aligned.
- the upper part of FIG. 7 shows, as an embodiment, the state of a sleeve member applied to an MU type optical connector before and after sleeve press-fitting.
- the middle part of FIG. 7 (denoted as "LC type" in FIG.
- FIG. 7 is a diagram showing, as an embodiment, the state of a sleeve member applied to an LC type optical connector before and after the sleeve is press-fitted.
- the lower part of FIG. 7 (denoted as "SC type" in FIG. 7) is a diagram showing, as an embodiment, the state of a sleeve member applied to an SC type optical connector before and after the sleeve is press-fitted.
- the edges of flange 130A, flange 130B, and flange 130C shown in FIG. 7 correspond to edge 135 on the front surface side of flange 130A or flange portion 520 shown in FIG.
- FIG. 8A and 8B are diagrams showing states of a sleeve member applied to various embodiments (MU type, LC type, SC type) as a ferrule assembly of an optical connector of the present disclosure before and after sleeve press-fitting.
- a structure is shown in which the installation reference line LR defined by the inclined surface 20A and the edge line E1 of the flange 130A are aligned.
- the upper part of FIG. 8 shows, as an embodiment, the state of a sleeve member applied to an MU type optical connector before and after press-fitting the sleeve.
- the middle part of FIG. 8 (denoted as "LC type" in FIG.
- FIG. 8 is a diagram showing states of a sleeve member applied to an LC type optical connector before and after sleeve press-fitting, as an embodiment.
- the lower part of FIG. 8 (denoted as "SC type” in FIG. 8) is a diagram showing the state of a sleeve member applied to an SC type optical connector before and after sleeve press-fitting, as an embodiment. 8 also correspond to the edge 135 on the front surface side of the flange 130A or the flange portion 520 shown in FIG. are doing.
- FIG. 9 shows the number of flanges of the sleeve member applied to the MU-type embodiment in the ferrule assembly of the optical connector of the present disclosure and provided with a deformation absorbing portion (for example, see FIG. 4, etc.). are shown (after press-fitting the sleeve) with different flange installations, as well as a comparative example.
- the uppermost part of FIG. 9 (referred to as “comparative example” in FIG. 9) shows an installation state of a flange 210A of a comparative example in which deformation absorbing portions are not provided on each side.
- type 1 one deformation absorbing portion
- a flange 130A provided with a deformation absorbing portion (notch 131a) on one side is installed. state is shown.
- deformation absorbing portions notch portion 131a and notch portion 131b
- deformation absorbing portions are provided on two opposing sides.
- deformation absorbing portions are provided on three adjacent sides.
- deformation absorbing portions notches 131a to 131c
- the installed state of the provided flange 130A is shown.
- deformation absorbing portions notches 131a to 131d
- FIG. 10 is a diagram showing the results of evaluating the shape change of the flange (MU type) with the sleeve press-fitted in the comparative example and the present embodiment (denoted as "evaluation result” in FIG. 10).
- the upper part of FIG. 10 (denoted as “comparative example (MU type)” in FIG. 10) is a diagram showing the evaluation results of the shape change of the flange (constituting a part of the sleeve member) in the comparative example.
- the lower part of FIG. 10 shows the evaluation results of the shape change of the flange (constituting part of the sleeve member) in this embodiment.
- a flange 210A of a comparative example applied to an MU-type optical connector will be described.
- the shape of the flange surface (the surface located on the ferrule 110 side) of the flange 210A of the comparative example shown in the upper part of FIG. 6 is quadrangular.
- the edge line E2 of the flange surface of the flange 210A is aligned with the installation reference line L R (defined on the opposing surface 20B against which the edge 135 of the flange 210A shown in FIG. 5 abuts). Designed.
- FIG. 9 shows the installation state of the flange 210A (comparative example) in the front housing 20 after the sleeve is press-fitted. As can be seen from the uppermost example in FIG.
- the flange 210A according to the comparative example is in contact only at two points (contact point C shown in the figure), the inclined surface 20A and the facing surface 20B of the positioning portion. Become. Therefore, with the flange 210A according to the comparative example, the reference orientation (the orientation indicated by the line LA shown in the third and bottom stages of FIG. 1) cannot be determined.
- the shape of the front surface of the flange 130A (500) of this embodiment shown in the upper part of FIG. 7 is quadrilateral.
- a notch 131a (521a) as a deformation absorbing portion is provided on the edge of the front surface of the flange 130A (corresponding to the edge 135 shown in FIG. 4) aligned with the edge line E2.
- the notch 131a is located on the edge line E2, and is designed so that two abutting portions sandwiching the notch 131a are aligned with the installation reference line LR on the facing surface 20B.
- a deformed portion 220 is also generated in the outer peripheral portion of the flange 130A, but the deformed portion 220 of the rim coincident with the rim line E2 is generated in the notch portion 131a, so that the entire flange 130A rotates with respect to the opposing surface 20B. is effectively suppressed. Therefore, in this embodiment, even after the sleeve is press-fitted, the edge line E2 and the installation reference line LR are kept aligned.
- the example shown in the upper part of FIG. 8 also has the same effect as the example shown in the upper part of FIG. That is, the shape of the front surface of the flange 130A (500) is a square, and the edge of the front surface of the flange 130A (corresponding to the edge 135 shown in FIG. A notch portion 131a (521a) is provided as a deformation absorbing portion.
- the notch 131a is located on the edge line E1, and is designed so that the two contact portions sandwiching the notch 131a are aligned with the installation reference line LR on the inclined surface 20A. That is, the example shown in the upper part of FIG. 8 is different from the example shown in the upper part of FIG. .
- the deformed portion 220 generated in the edge aligned with the edge line E1 is generated in the notch portion 131a, thereby effectively suppressing the rotation of the entire flange 130A with respect to the inclined surface 20A. Therefore, in this embodiment, even after the sleeve is press-fitted, the edge line E1 and the installation reference line LR are kept aligned.
- the flange 130A is attached at a total of three points (contact point C shown in the figure), one point on the inclined surface 20A and two points on the opposing surface 20B. It comes into contact with the inner wall surface of the front housing 20 .
- the contact portion sandwiching the notch 131a is brought into contact with the inclined surface 20A.
- the flange 130A is forward at three points (contact point C shown in the figure), two points on the inclined surface 20A and one point on the opposing surface 20B. It comes into contact with the inner wall surface of the housing 20 . Therefore, according to the examples shown in the upper part of FIG. 7 and the upper part of FIG. 8, even if the machining accuracy of the flange 130A is low, the parallel state between the line L A indicating the reference orientation and the installation reference line L R can be maintained. becomes possible.
- the flange 130A contacts the inner wall surface of the front housing 20 at a total of four points (contact points C shown in the drawing), two points on the inclined surface 20A and two points on the opposing surface 20B.
- the reference It is possible to maintain the parallel state between the line LA indicating the orientation and the installation reference line LR with higher accuracy.
- a sufficient clearance is ensured between the flange 130A and the inner wall surface of the front housing 20 connecting the inclined surface 20A and the opposing surface 20B, considering that the deformed portion 220 is generated.
- the flange 130A contacts the inner wall surface of the front housing 20 at a total of three points (contact points C shown in the drawing), one point on the inclined surface 20A and two points on the opposing surface 20B, or the flange 130A is inclined. It contacts the inner wall surface of the front housing 20 at a total of three points (contact point C shown in the figure), two points on the surface 20A and one point on the opposing surface 20B.
- contact points C shown in the drawing contacts the inner wall surface of the front housing 20 at a total of three points (contact point C shown in the figure), two points on the surface 20A and one point on the opposing surface 20B.
- a flange 130A having notches 131a to 131d provided on the edges corresponding to the edge lines E1 to E4, respectively, is cut on the edge line E2 as shown in the bottom of FIG.
- the contact portion sandwiching the notch portion 131a is in contact with the facing surface 20B, while the contact portion sandwiching the notch portion 131b on the edge line E1 is in contact with the inclined surface 20A.
- the contact portion sandwiching the notch portion 131 c and the contact portion sandwiching the notch portion 131 d do not contact the inner wall surface of the front housing 20 .
- the flange 130A contacts the inner wall surface of the front housing 20 at a total of four points (contact points C shown in the figure), two points on the inclined surface 20A and two points on the opposing surface 20B.
- contact points C shown in the figure
- the flange 130A contacts the inner wall surface of the front housing 20 at a total of four points (contact points C shown in the figure), two points on the inclined surface 20A and two points on the opposing surface 20B.
- the deformation occurring in the edge of the flange 130A is absorbed inside the notches 131a to 131d, which are the deformation absorbing portions, respectively. It can be confirmed that the deformation of the flange 130A caused by press-fitting does not affect the change in the contact state between the inclined surface 20A and the facing surface 20B of the positioning portion and the edge of the flange 130A.
- a comparative flange 210B applied to an LC optical connector will be described.
- the shape of the flange surface (surface located on the ferrule 110 side) of the flange 210B of the comparative example shown in the middle of FIG. 6 is hexagonal.
- the edge line E2 of the flange surface of the flange 210B is designed to match the installation reference line LR of the facing surface 20B of the corresponding positioning portion.
- a deformed portion 220 is generated in the outer peripheral portion of the flange 210B, so that the edge line E2 and the installation reference line LR are separated from each other via the deformed portion 220.
- the shape of the front face of the flange 130B of the present embodiment shown in the middle of FIG. 7 is also hexagonal.
- the notch 132a is on the edge line E2, and two abutting portions sandwiching the notch 132a are aligned with the installation reference line LR on the facing surface 20B of the positioning portion.
- a deformed portion 220 is also generated in the outer peripheral portion of the flange 130B, but the deformed portion 220 generated in the edge aligned with the edge line E2 is generated in the notch portion 132a, so that the shape of the flange 130B as a whole is less likely to change. ing. Therefore, in this embodiment, even after the sleeve is press-fitted, the edge line E2 and the installation reference line LR are kept aligned.
- the example shown in the middle part of FIG. 8 also has the same effect as the example shown in the middle part of FIG. That is, the shape of the front surface of the flange 130B is hexagonal, and a notch portion 132a as a deformation absorbing portion is provided on the edge of the front surface of the flange 130B that coincides with the edge line E1 before the sleeve is press-fitted. .
- the notch 132a is located on the edge line E1, and is designed so that two abutting portions sandwiching the notch 132a are aligned with the installation reference line LR on the inclined surface 20A. That is, the example shown in the middle of FIG. 8 is different from the example shown in the middle of FIG.
- a comparative flange 210C applied to an SC type optical connector will be described.
- a groove (having a bottom with which the inclined surface 20A and the opposing surface 20B of the positioning portion abut) is provided for the purpose.
- the edge line E2 of the flange surface of the flange 210C is designed to match the installation reference line LR on the facing surface 20B of the corresponding positioning portion.
- a deformed portion 220 is generated in the outer peripheral portion of the flange 210C, so that the edge line E2 and the installation reference line LR are separated from each other via the deformed portion 220.
- the shape of the front surface of the flange 130C of this embodiment shown in the lower part of FIG. 7 is circular, which is different from the SC type comparative example described above.
- grooves for suppressing rotation of the flange 130C are provided in four directions when viewed from the center.
- the notch 133a is on the edge line E2, and the two abutting portions sandwiching the notch 133a are designed to match the installation reference line LR on the opposing surface 20B.
- the outer peripheral portion of the flange 130C also has a deformed portion 220.
- the deformed portion 220 that occurs at the edge aligned with the edge line E2 occurs inside the notch portion 133a, so that the shape of the flange 130C as a whole changes. It's getting harder. Therefore, in this embodiment, even after the sleeve is press-fitted, the edge line E1 and the installation reference line LR are kept aligned.
- the example shown in the lower part of FIG. 8 also has the same effect as the example shown in the lower part of FIG. 7 described above. That is, the shape of the front surface of the flange 130C is circular, and the grooves for suppressing the rotation of the flange 130C (the inclined surface 20A and the opposing surface 20B of the positioning portion are abutted in four directions when viewed from the center). with a bottom). Before the sleeve is press-fitted, the notch 133a is on the edge line E1, and the two abutting portions sandwiching the notch 133a are designed to match the installation reference line LR on the inclined surface 20A. there is That is, the example shown in the lower part of FIG. 8 is different from the example shown in the lower part of FIG.
- the positioning portion is composed of the inclined surface 20A provided on the upper portion of the front housing 20 and the flat facing surface 20B provided on the lower side of the front housing 20.
- the lower side of the front housing 20 may be provided with an inclined surface, while the upper side of the front housing 20 may be provided with a flat opposing surface. Further, both the upper and lower sides of the front housing 20 may be provided with ramps.
- Optical connector 20 Front housing 20A... Inclined surface (positioning part) 20B... Opposing surface (positioning part) 30... Rear housing 40... Boot 50... Optical fiber 50A... MCF (multi-core optical fiber) 50B...PMF (polarization maintaining optical fiber) 51, 51A, 51B... Glass fibers 52A, 52B... Cores 53A, 53B... Common clad 54... Stress applying part 100... Ferrule assembly 110... Ferrule 120... Sleeve 120a... Front end face 120b... Rear end faces 130A to 130C... Flange 130a... Front Surface 130b... Rear surface 131a to 131d, 132a, 133a, 521a... Notch portion (deformation absorbing portion) 132... Through hole 135...
- Rim 140 Spring material (elastic body) 220 Deformation portion 500 Integrated sleeve member 510 Sleeve portion 520 Flange portion 530 Through hole AX Fiber axis (central axis) E1 to E4 ... Edge line L A ... Line (line indicating reference direction) L R ... Installation reference lines S1 to S3 ... Direction of movement or rotation.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
Description
本願は、2021年7月7日に出願された日本特許出願第2021-112955号による優先権を主張するものであり、その内容に依拠すると共に、その全体を参照して本明細書に組み込む。
発明者らは、上述の従来技術について検討した結果、以下のような課題を発見した。例えば、特許文献1に開示されたフェルールアセンブリは、光ファイバの先端部分に固定されたフェルールと、前方端面の開口部にフェルールが差し込まれるスリーブと、該スリーブに取り付けられるフランジと、により構成されている。なお、特許文献1には、スリーブの外周面上にはフランジがフェルール側に移動するのを防止するための突起が設けられた構造が開示されている。プッシュプル型光コネクタでは、上述のような構造を有するフェルールアセンブリのフランジ、特に直線状のへりが、ハウジング後方に収納されたばね材により、ハウジング内壁に設けられた位置決め部に押し当てられる。そのため、プッシュプル型光コネクタによれば、ハウジングに対してフェルールアセンブリが所定位置に保持されると同時に、当該光コネクタに対して光ファイバの調芯状態が固定される。
本開示の光コネクタによれば、ハウジングに対する光ファイバの調芯状態の変動が抑制され得る。
最初に本開示の実施形態の内容をそれぞれ個別に列挙して説明する。
以下、本開示に係る光コネクタの具体的な構造を、添付図面を参照しながら詳細に説明する。なお、本発明はこれらの例示に限定されるものではなく、請求の範囲によって示され、請求の範囲と均等の意味および範囲内での全ての変更が含まれることが意図される。また、図面の説明において同一の要素には同一符号を付して重複する説明を省略する。
20…前方ハウジング
20A…傾斜面(位置決め部)
20B…対向面(位置決め部)
30…後方ハウジング
40…ブーツ
50…光ファイバ
50A…MCF(マルチコア光ファイバ)
50B…PMF(偏波保持光ファイバ)
51、51A、51B…ガラスファイバ
52A、52B…コア
53A、53B…共通クラッド
54…応力付与部
100…フェルールアセンブリ
110…フェルール
120…スリーブ
120a…前方端面
120b…後方端面
130Aから130C…フランジ
130a…前方面
130b…後方面
131aから131d、132a、133a、521a…切欠き部(変形吸収部)
132…貫通孔
135…へり
140…ばね材(弾性体)
220…変形部分
500…一体型スリーブ部材
510…スリーブ部分
520…フランジ部分
530…貫通孔
AX…ファイバ軸(中心軸)
E1からE4…へり線
LA…線(基準方位を示す線)
LR…設置基準線
S1からS3…移動または回転方向。
Claims (5)
- 光ファイバと、
前記光ファイバの先端部分に取り付けられたフェルールアセンブリと、
前記フェルールアセンブリを収納する空間を定義する内壁面と、前記フェルールアセンブリの収納位置を定義する位置決め部と、を有するハウジングと、
を備え、
前記位置決め部は、前記内壁面上に設けられており、前記光ファイバの前記先端部分の中心軸に対して傾斜するとともに前記フェルールアセンブリの一部が当接される傾斜面と、前記フェルールアセンブリに対して前記傾斜面の反対側に位置するとともに前記フェルールアセンブリの一部が当接される対向面と、により定義され、
前記フェルールアセンブリは、
フェルールと、
互いに対向する前方端面および後方端面を有するスリーブと、前記位置決め部の前記傾斜面および前記対向面に対して少なくとも一部がそれぞれ当接されるへりを有するフランジと、により構成されたスリーブ部材と、
を含み、
前記スリーブは、前記前方端面と前記後方端面とを連絡し、前記光ファイバの前記先端部分が取り付けられる前または取り付けられた後の前記フェルールの一部が前記前方端面の側から差し込まれた貫通孔を有し、
前記フランジの外周部分のうち、前記位置決め部の前記傾斜面および前記対向面の少なくとも一方の面に対面する、前記へりを含む部分は、前記フランジの変形を抑制するための変形吸収部と、前記変形吸収部を挟むとともに前記位置決め部の前記傾斜面および前記対向面の少なくとも一方の面に接触する2ヶ所の当接部と、からなる組を含む、
光コネクタ。 - 前記変形吸収部は、前記位置決め部から前記フランジの一部を所定距離離すための切欠き部を含む、
請求項1に記載の光コネクタ。 - 前記スリーブ部材、単一部材で構成され、前記スリーブと前記フランジのそれぞれは、前記単一部材の一部分である、
請求項1または請求項2に記載の光コネクタ。 - 前記後方端面の側から前記フランジに当接され、前記フランジの前記へりを前記位置決め部の前記傾斜面に押し当てるための弾性体を、さらに備える、
請求項1から請求項3のいずれか一項に記載の光コネクタ。 - 前記光ファイバは、マルチコア光ファイバまたは偏波保持光ファイバである、
請求項1から請求項4のいずれか一項に記載の光コネクタ。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280043223.9A CN117546068A (zh) | 2021-07-07 | 2022-06-09 | 光连接器 |
EP22837398.1A EP4369067A1 (en) | 2021-07-07 | 2022-06-09 | Optical connector |
JP2023533480A JPWO2023281979A1 (ja) | 2021-07-07 | 2022-06-09 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-112955 | 2021-07-07 | ||
JP2021112955 | 2021-07-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023281979A1 true WO2023281979A1 (ja) | 2023-01-12 |
Family
ID=84800528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/023342 WO2023281979A1 (ja) | 2021-07-07 | 2022-06-09 | 光コネクタ |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4369067A1 (ja) |
JP (1) | JPWO2023281979A1 (ja) |
CN (1) | CN117546068A (ja) |
WO (1) | WO2023281979A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4422467A (en) * | 1982-04-26 | 1983-12-27 | Wu Tsun Z | Coupling structure of the upper notch and ferrule on an umbrella or parasol |
JPH04281409A (ja) | 1991-03-11 | 1992-10-07 | Nippon Telegr & Teleph Corp <Ntt> | 偏波保持光ファイバコネクタ用フェルール |
JP2013522679A (ja) * | 2010-03-16 | 2013-06-13 | オーエフエス ファイテル,エルエルシー | マルチコア光ファイバケーブルのための単心コネクタ |
WO2020149262A1 (ja) * | 2019-01-15 | 2020-07-23 | 住友電気工業株式会社 | 光コネクタおよび光接続構造 |
JP2021112955A (ja) | 2020-01-17 | 2021-08-05 | 株式会社アドヴィックス | 制動制御装置 |
-
2022
- 2022-06-09 JP JP2023533480A patent/JPWO2023281979A1/ja active Pending
- 2022-06-09 CN CN202280043223.9A patent/CN117546068A/zh active Pending
- 2022-06-09 WO PCT/JP2022/023342 patent/WO2023281979A1/ja active Application Filing
- 2022-06-09 EP EP22837398.1A patent/EP4369067A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4422467A (en) * | 1982-04-26 | 1983-12-27 | Wu Tsun Z | Coupling structure of the upper notch and ferrule on an umbrella or parasol |
JPH04281409A (ja) | 1991-03-11 | 1992-10-07 | Nippon Telegr & Teleph Corp <Ntt> | 偏波保持光ファイバコネクタ用フェルール |
JP2013522679A (ja) * | 2010-03-16 | 2013-06-13 | オーエフエス ファイテル,エルエルシー | マルチコア光ファイバケーブルのための単心コネクタ |
WO2020149262A1 (ja) * | 2019-01-15 | 2020-07-23 | 住友電気工業株式会社 | 光コネクタおよび光接続構造 |
JP2021112955A (ja) | 2020-01-17 | 2021-08-05 | 株式会社アドヴィックス | 制動制御装置 |
Non-Patent Citations (1)
Title |
---|
TETSU MORISHIMA ET AL.: "Simple-Structure LC-Type Multi-Core Fiber Connector with Low Insertion Loss", OFC2020 |
Also Published As
Publication number | Publication date |
---|---|
EP4369067A1 (en) | 2024-05-15 |
JPWO2023281979A1 (ja) | 2023-01-12 |
CN117546068A (zh) | 2024-02-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7756370B2 (en) | Method of producing a ferrule with an optical fiber | |
US8182159B2 (en) | Lens assembly, optical device, optical axis adjusting method for an optical device | |
US5436995A (en) | Optical fiber connector unit and optical fiber connector | |
JP2016095410A (ja) | グリンレンズアレイ、レンズ付きコネクタ、及びレンズ付きコネクタシステム | |
US8279542B2 (en) | Optical device and lens assembly | |
US20100149650A1 (en) | Optical Device and Lens Assembly | |
US9442258B2 (en) | Adapter with securing cage for a multicontact connector and associated multicontact connector | |
US20100247040A1 (en) | Ferrule connecting structure | |
WO2012160878A1 (ja) | 光コネクタ | |
JP5705602B2 (ja) | 光コネクタ | |
WO2023281979A1 (ja) | 光コネクタ | |
WO2019044079A1 (ja) | コネクタプラグ、光コネクタ及び光接続構造 | |
WO2023089971A1 (ja) | 光コネクタ | |
US7841778B2 (en) | Optical connector | |
WO2023281976A1 (ja) | 光コネクタ | |
JP2013156309A (ja) | 光コネクタ | |
WO2023062934A1 (ja) | 光コネクタ | |
JPH0756053A (ja) | 光コネクタフェルールの回転止め構造 | |
WO2023053754A1 (ja) | 光接続部品 | |
US9594221B2 (en) | Optical connector | |
WO2023188833A1 (ja) | 光コネクタ | |
JPWO2023281979A5 (ja) | ||
KR200391790Y1 (ko) | 자동 정렬 렌즈 및 그 렌즈를 이용한 렌즈 어셈블리 | |
JP2014115352A (ja) | レンズ付き接続体、光ファイバ接続構造体、及び光コネクタ | |
WO2022131169A1 (ja) | 光コネクタ及び光接続構造 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22837398 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18569304 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280043223.9 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023533480 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022837398 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2022837398 Country of ref document: EP Effective date: 20240207 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |