WO2017141904A1 - 光コネクタフェルール及び光コネクタ - Google Patents
光コネクタフェルール及び光コネクタ Download PDFInfo
- Publication number
- WO2017141904A1 WO2017141904A1 PCT/JP2017/005312 JP2017005312W WO2017141904A1 WO 2017141904 A1 WO2017141904 A1 WO 2017141904A1 JP 2017005312 W JP2017005312 W JP 2017005312W WO 2017141904 A1 WO2017141904 A1 WO 2017141904A1
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- WO
- WIPO (PCT)
- Prior art keywords
- ferrule
- optical fiber
- hole
- optical connector
- inspection
- Prior art date
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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
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/385—Accessories for testing or observation of connectors
-
- 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
- G02B6/26—Optical coupling means
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
-
- 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
- G02B6/3834—Means for centering or aligning the light guide 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
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3853—Lens inside 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
- G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
- G02B6/3885—Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type
-
- 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
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
- G02B6/3632—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means
- G02B6/3644—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means the coupling means being through-holes or wall apertures
-
- 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
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
- G02B6/3664—2D cross sectional arrangements of the fibres
- G02B6/3672—2D cross sectional arrangements of the fibres with fibres arranged in a regular matrix array
Definitions
- the present invention relates to an optical connector ferrule and an optical connector.
- Patent Document 1 discloses a ferrule used for an optical connector for connecting multi-core optical fibers.
- the ferrule includes a plurality of holes for holding a plurality of optical fiber cores, an inner surface for abutting and positioning the front ends of the plurality of optical fiber cores, and a front surface of the inner surface at the end surface. And a lens formed integrally with the recess.
- the eccentricity of the optical fiber holding hole may cause a decrease in optical coupling efficiency.
- the eccentricity of the optical fiber holding hole can be easily known by observing from the front.
- the lens when the lens is arranged in front of the optical fiber holding hole as in, for example, Patent Document 1, the lens prevents observation of the optical fiber holding hole, so that the eccentricity of the optical fiber holding hole is known. It becomes difficult.
- An object of the present invention is to provide an optical connector ferrule and an optical connector that can easily know the eccentricity of an optical fiber holding hole even when a lens structure is provided in front of the optical fiber holding hole. To do.
- an optical connector ferrule is a resin optical connector ferrule, which is a through hole reaching the first surface and holds an inserted optical fiber.
- the eccentricity of the optical fiber holding hole can be easily known.
- FIG. 1 is a perspective view showing an appearance of an optical connector including an optical connector ferrule according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of the optical connector ferrule along the line II-II shown in FIG.
- FIG. 3 is a front view of the optical connector ferrule.
- 4A is a cross-sectional view taken along line IVa-IVa shown in FIG. 4B is a cross-sectional view taken along line IVb-IVb shown in FIG.
- FIG. 5 is a cross-sectional view showing one process for manufacturing the optical connector ferrule.
- FIG. 6 is a front view of an optical connector ferrule according to a first modification of the embodiment.
- 7A is a cross-sectional view taken along the line VIIa-VIIa shown in FIG.
- FIG. 7B is a sectional view taken along line VIIb-VIIb shown in FIG.
- FIG. 8 is a front view of an optical connector ferrule according to a second modification.
- FIG. 9 is a cross-sectional view of an optical connector ferrule according to a third modification.
- FIG. 10 is a cross-sectional view of an optical connector ferrule according to still another modification.
- An optical connector ferrule according to an embodiment of the present invention is a resin optical connector ferrule, which is a through-hole reaching the first surface and holding an inserted optical fiber, and an optical fiber holding A lens structure provided on the axis of the hole; and an inspection hole that is a through hole formed along the optical fiber holding hole and reaching the first surface.
- an optical fiber is inserted and held in the optical fiber holding hole. And the light radiate
- the optical connector ferrule described above has an inspection hole separately from the optical fiber holding hole.
- the inspection hole is a through-hole that reaches the first surface in the same manner as the optical fiber holding hole, and is formed along the optical fiber holding hole.
- the rod-shaped mold for forming the optical fiber holding hole and the rod-shaped mold for forming the inspection hole can be extended from a common base. In this case, the error in the relative position between the inspection hole and the optical fiber holding hole is extremely small. Further, by observing from the front, the eccentricity of the inspection hole can be easily known without being obstructed by the lens structure. That is, according to the optical connector ferrule, the eccentricity of the optical fiber holding hole can be easily known through the eccentricity of the inspection hole.
- the optical connector ferrule further includes a second surface facing the first surface, and a ferrule end surface positioned on the back side of the second surface and facing the counterpart optical connector ferrule, and the lens structure has the second surface.
- the ferrule end surface and at least one of the second surface and the ferrule end surface, and at least on the axis of the inspection hole, the second surface and the ferrule end surface are flat, and the second surface and the ferrule end surface
- the refractive index distribution in the region between the two may be uniform.
- the second surface and the ferrule end surface are flat, and the refractive index distribution in the region between the second surface and the ferrule end surface is uniform. Observation of the inspection hole from is further facilitated.
- the inner diameter of the inspection hole may be equal to the inner diameter of the optical fiber holding hole.
- the rod-shaped mold for forming the optical fiber holding hole and the rod-shaped mold for forming the inspection hole can be shared, and the types of molds can be reduced.
- the thicknesses of these dies are different, the degree of bending of the dies when the molten resin flows is different, and the relative positional accuracy between the inspection hole and the optical fiber holding hole is affected.
- the thicknesses of these dies can be made equal to have the same degree of bending, and the relative positional accuracy can be improved.
- the optical fiber holding hole has a plurality of holding holes
- the lens structure has a plurality of lenses respectively provided on the axes of the holding holes
- the inspection holes have the first and the first holes.
- Two openings for inspection, the openings on the first surface of the plurality of holding holes are formed in a row or in a plurality of rows, and the openings on the first surface of the first inspection holes are in any row
- the openings on the first surface of the second inspection hole may be formed side by side on the other end side of any row. Thereby, the inspection holes can be arranged without disturbing the arrangement of the optical fibers.
- the optical connector ferrule may further include a mark for alignment with the inspection hole provided on at least one of the second surface, the ferrule end surface, and the second surface and the ferrule end surface. Good. Since such a mark can be simultaneously formed by a mold for forming a lens structure, an error in the relative position between the mark and the lens structure is extremely small. When observed from the front, the mark and the inspection hole appear to overlap. Therefore, by observing the relative displacement between the mark and the inspection hole, it is possible to easily know the relative displacement between the optical fiber holding hole and the lens structure.
- the mark may be formed in a convex shape having a flat portion overlapping the axis of the inspection hole.
- the mold part for forming the mark since the mold part for forming the mark is concave, the flow of the molten resin is suppressed by the mold part for forming the mark, and the lens structure can be suitably formed.
- the mark may have a circular shape when viewed from the axial direction of the inspection hole. Thereby, the relative position shift between the mark and the inspection hole can be easily found. Such an effect becomes more remarkable when the diameter of the mark is different from the inner diameter of the inspection hole.
- FIG. 1 is a perspective view showing an appearance of an optical connector 1A including an optical connector ferrule according to an embodiment of the present invention.
- FIG. 2 is a sectional view taken along line II-II shown in FIG.
- the optical connector 1A holds (fixes) the multi-core optical fiber bundle F1, and the end surface of the optical connector 1A faces the end surface of the counterpart optical connector that similarly holds the optical fiber, thereby allowing optical connection between the optical fibers.
- the optical connector 1A includes a resin optical connector ferrule 10A (hereinafter simply referred to as a ferrule) that holds the optical fiber bundle F1.
- the resin constituting the optical connector ferrule 10A is made of, for example, a light transmissive resin.
- the ferrule 10A has a substantially rectangular parallelepiped appearance. Specifically, the ferrule 10A has a ferrule end face 10a provided on one end side in the connection direction (Z direction) and facing the counterpart optical connector, and a rear end face 10b provided on the other end side.
- the ferrule 10A has a pair of side surfaces 10c, 10d extending along the Z direction, a bottom surface 10e, and an upper surface 10f.
- the rear end face 10b is formed with an introduction hole 15 for receiving an optical fiber bundle F1 formed by bundling a plurality of optical fibers F2.
- the ferrule 10A further includes a recess 14 formed from the upper surface 10f toward the bottom surface 10e.
- the surface 14 a on the rear end surface 10 b side among the inner surfaces constituting the recess 14 is an example of the first surface in the present embodiment, and is a flat surface along the XY plane.
- the surface 14b on the ferrule end surface 10a side of the inner surface constituting the recess 14 is an example of the second surface in the present embodiment, and is opposed to the surface 14a and is a flat surface along the XY plane (that is, the surface 14a and the surface 14a). Parallel plane).
- the ferrule end face 10a is located on the back side of the face 14b.
- the ferrule 10 ⁇ / b> A further includes a plurality of optical fiber holding holes 13.
- the plurality of optical fiber holding holes 13 are through holes that reach the surface 14a from the introduction hole 15, and are formed with the Z direction as the axial direction.
- Each optical fiber holding hole 13 holds the inserted optical fiber F2.
- the openings in the surface 14a of the plurality of optical fiber holding holes 13 are formed in a row or in a plurality of rows.
- the optical fiber holding holes 13 of this embodiment are formed in multiple stages (for example, two stages) in the Y direction, and a plurality of optical fiber holding holes 13 at each stage are arranged side by side in the X direction.
- Each optical fiber holding hole 13 includes a large-diameter portion 13a formed on the introduction hole 15 side, and a small-diameter portion 13b formed on the surface 14a side that is continuous with the large-diameter portion 13a.
- the large diameter portion 13a holds the portion of the optical fiber F2 covered with the coating 51
- the small diameter portion 13b holds the portion of the optical fiber F2 (bare fiber) from which the coating 51 has been removed.
- the optical fiber F2 held by the small-diameter portion 13b extends from the surface 14a so as to protrude forward in the Z direction, and its tip surface is in contact with the surface 14b.
- the ferrule 10 ⁇ / b> A further includes a plurality of lens structures 16.
- the plurality of lens structures 16 are hemispherical convex portions formed on the ferrule end surface 10a, and are formed integrally with other portions of the ferrule 10A.
- the plurality of lens structures 16 are provided on the axes of the corresponding optical fiber holding holes 13 and are optically coupled to the respective front end surfaces of the plurality of optical fibers F2 held in the optical fiber holding holes 13. .
- Each lens structure 16 collimates the light emitted from the distal end surface of each optical fiber F2 or condenses the light incident from the counterpart optical connector on the distal end surface of each optical fiber F2.
- the ferrule 10A further includes a pair of guide holes 19a and 19b.
- the guide holes 19a and 19b are formed side by side in the X direction so as to sandwich the plurality of lens structures 16 on the ferrule end face 10a.
- Guide pins for fixing a relative position with the mating connector are inserted into the guide holes 19a and 19b.
- FIG. 3 is a front view of the ferrule 10A.
- 4A is a cross-sectional view taken along the line IVa-IVa shown in FIG. 3
- FIG. 4B is a cross-sectional view taken along the line IVb-IVb shown in FIG.
- the ferrule 10 ⁇ / b> A further includes a first inspection hole 17 and a second inspection hole 18 in addition to the plurality of optical fiber holding holes 13.
- These inspection holes 17 and 18 are through holes reaching the surface 14 a from the introduction hole 15, and are formed along the optical fiber holding hole 13 with the Z direction as the axial direction.
- the inspection holes 17 and 18 are connected to the large diameter portions 17a and 18a formed on the introduction hole 15 side, and the large diameter portions 17a and 18a and the surface 14a side. And small-diameter portions 17b and 18b formed respectively.
- the inner diameters of the large diameter portions 17a and 18a are equal to the inner diameter of the large diameter portion 13a of the optical fiber holding hole 13
- the inner diameters of the small diameter portions 17b and 18b are equal to the inner diameter of the small diameter portion 13b of the optical fiber holding hole 13.
- both the surface 14b and the ferrule end surface 10a are flat, and the refractive index distribution in the region between the surface 14b and the ferrule end surface 10a is uniform. In other words, no condensing optical element such as the lens structure 16 is provided near the axis of the inspection holes 17 and 18.
- the opening in the surface 14a of the first inspection hole 17 is formed side by side on one end side of the row of the first-stage optical fiber holding holes 13.
- the opening in the surface 14a of the second inspection hole 18 is formed side by side on the other end side of the row of the second-stage optical fiber holding holes 13.
- FIG. 5 is a cross-sectional view showing one process for manufacturing the ferrule 10A.
- FIG. 5 shows some molds 31 to 34 for molding the ferrule 10A.
- the mold 31 is a rod-shaped mold for forming the optical fiber holding hole 13 and extends in the Z direction.
- a plurality of molds 31 are provided according to the number of optical fiber holding holes 13.
- the molds for forming the inspection holes 17 and 18 have the same shape as the molds 31 and are arranged side by side with these molds 31.
- Each end of the mold for forming the plurality of molds 31 and the inspection holes 17 and 18 is held by a mold 32 for forming the introduction hole 15, and each other end forms the recess 14.
- a mold 34 is provided.
- the mold 34 is a mold for forming the ferrule end face 10 a and the lens structure 16.
- Ferrule 10A can be formed using a mold including at least these molds 31-34.
- the ferrule 10A of the present embodiment having the above configuration will be described.
- the optical fiber F2 is inserted into the optical fiber holding hole 13 and held.
- emitted from the front end surface of the optical fiber F2 is collimated by the lens structure 16, and reaches
- the light collimated and emitted from the counterpart optical connector reaches the distal end surface of the optical fiber F2 while being collected by the lens structure 16. Therefore, according to the ferrule 10A, efficient optical coupling with the counterpart optical connector is possible.
- the ferrule 10 ⁇ / b> A of the present embodiment has inspection holes 17 and 18 in addition to the optical fiber holding hole 13.
- the inspection holes 17 and 18 are through-holes that reach the surface 14 a similarly to the optical fiber holding hole 13, and are formed along the optical fiber holding hole 13.
- the rod-shaped mold 31 for forming the optical fiber holding hole 13 and the rod-shaped mold for forming the inspection holes 17 and 18 have a common base (mold 32). Can be extended from.
- the other ends of these molds are held by the mold 33. Therefore, the error in the relative position between the inspection holes 17 and 18 and the optical fiber holding hole 13 is extremely small.
- the eccentricity of the inspection holes 17 and 18 can be easily known without being obstructed by the lens structure 16. That is, according to the ferrule 10A of the present embodiment, the eccentricity of the optical fiber holding hole 13 can be easily known through the eccentricity of the inspection holes 17 and 18.
- the lens structure 16 is provided on the ferrule end surface 10a, and the surface 14b and the ferrule end surface 10a are flat and the surface 14b and the ferrule are at least on the axis of the inspection holes 17 and 18.
- the refractive index distribution in the region between the end surface 10a is uniform. Thereby, distortion of the image of the inspection holes 17 and 18 viewed from the front is suppressed, and the observation of the inspection holes 17 and 18 is further facilitated.
- the inner diameters of the inspection holes 17 and 18 may be equal to the inner diameter of the optical fiber holding hole 13.
- the rod-shaped mold 31 for forming the optical fiber holding hole 13 and the rod-shaped mold for forming the inspection holes 17 and 18 can be shared, and the types of molds can be reduced. it can.
- the degree of bending of the dies when the molten resin flows changes, which affects the relative positional accuracy between the inspection holes 17 and 18 and the optical fiber holding hole 13. Occurs. Since the inner diameters of the inspection holes 17 and 18 are equal to the inner diameter of the optical fiber holding hole 13, the thicknesses of these molds can be made equal to make the deflections comparable, and the relative positional accuracy can be further improved.
- the openings in the surface 14a of the plurality of optical fiber holding holes 13 are formed in a row or in a plurality of rows, and any one of the openings in the surface 14a of the first inspection hole 17 is The openings may be formed side by side on one end side of the row, and the opening in the surface 14a of the second inspection hole 18 may be formed side by side on the other end side of any row. Accordingly, the inspection holes 17 and 18 can be arranged without hindering the arrangement of the optical fibers F2.
- FIG. 6 is a front view of a ferrule 10B according to a first modification of the above embodiment.
- 7A is a cross-sectional view taken along the line VIIa-VIIa shown in FIG. 6, and
- FIG. 7B is a cross-sectional view taken along the line VIIb-VIIb shown in FIG.
- the ferrule 10B of this modification further includes two marks 21 and 22 in addition to the configuration of the ferrule 10A of the above embodiment.
- the mark 21 is provided in a region on the axis of the inspection hole 17 on the ferrule end face 10 a for alignment with the inspection hole 17.
- the mark 22 is provided in a region on the axis of the inspection hole 18 on the ferrule end face 10 a for alignment with the inspection hole 18.
- these marks 21 and 22 are formed in, for example, a convex shape protruding in the axial direction of the inspection holes 17 and 18, and the axis of the inspection holes 17 and 18 is formed on the top thereof.
- the marks 21 and 22 have a circular shape when viewed from the axial direction of the inspection holes 17 and 18, and the center thereof is the central axis of the inspection holes 17 and 18 in design. Matches.
- the diameters of the marks 21 and 22 are different from the inner diameters of the inspection holes 17 and 18.
- the diameters of the marks 21 and 22 are formed larger than the inner diameters of the inspection holes 17 and 18.
- the marks 21 and 22 may be convex.
- the mold parts for forming the marks 21 and 22 are concave, so that the molten resin flow is prevented from stagnation by the mold parts for forming the marks 21 and 22, and the lens structure 16 is suitable. Can be formed.
- the marks 21 and 22 may have a circular shape when viewed from the axial direction of the inspection holes 17 and 18. In this case, for example, by observing the deviation between the centers of the circular marks 21 and 22 and the centers of the inspection holes 17 and 18, the relative positional deviation between the marks 21 and 22 and the inspection holes 17 and 18 is achieved. Can be easily found. Further, since the diameters of the marks 21 and 22 are different from the inner diameters of the inspection holes 17 and 18, it is possible to prevent the outlines of the marks 21 and 22 from overlapping the outlines of the inspection holes 17 and 18 when viewed from the front. Thus, it is possible to more easily find a typical positional deviation.
- the marks 21 and 22 are provided on the ferrule end face 10a.
- the marks may be provided on the face 14b, or may be provided in a region between the face 14b and the ferrule end face 10a. Or you may provide in two or more places among the area
- the convex and circular marks 21 and 22 are exemplified, but the shape of the mark is not limited to this, and various shapes such as a shape such as “+” can be used.
- FIG. 8 is a front view of a ferrule 10C according to a second modification of the embodiment.
- the openings in the surface 14a of the plurality of optical fiber holding holes 13 are formed in a line in the X direction.
- the opening on the surface 14a of the first inspection hole 17 is formed side by side on one end side of the row, and the opening on the surface 14a of the second inspection hole 18 is on the other end side of the row. It is formed side by side.
- the position of the opening of the inspection holes 17 and 18 is not limited to the above embodiment, and can be formed at an arbitrary position on the surface 14a. For example, it may be formed at both ends of the same row as in this modification.
- FIG. 9 is a cross-sectional view of a ferrule 10D according to a third modification of the above embodiment.
- a plurality of lens structures 23 are provided on the surface 14b.
- the plurality of lens structures 23 are hemispherical convex portions formed on the surface 14b, and are formed integrally with other portions of the ferrule 10D.
- FIG. 10 is a cross-sectional view of a ferrule 10E according to still another modification.
- a plurality of lens structures 24 are provided in a region between the surface 14b and the ferrule end surface 10a.
- the plurality of lens structures 24 are cylindrical green lenses fitted into through holes formed in a region between the surface 14b and the ferrule end surface 10a.
- lens structures 23 and 24 are provided on the axes of the corresponding optical fiber holding holes 13 and are optically coupled to the respective front end surfaces of the plurality of optical fibers F2 held in the optical fiber holding holes 13. .
- the lens structures 23 and 24 collimate the light emitted from the distal end surface of the optical fiber F2 or condense the light incident from the counterpart optical connector onto the distal end surface of each optical fiber F2.
- the lens structure is not limited to the ferrule end surface 10a, and may be provided in the surface 14b or a region between the surface 14b and the ferrule end surface 10a.
- the lens structure may be provided at two or more places in the ferrule end face 10a, the face 14b, and the area between the face 14b and the ferrule end face 10a. Even in such a case, the effect of the above-described embodiment can be suitably obtained.
- optical connector ferrule according to the present invention is not limited to the above-described embodiment, and various other modifications are possible.
- the above-described embodiments may be combined with each other according to the necessary purpose and effect.
- the optical connector ferrule has a plurality of optical fiber holding holes, but the present invention is applicable even when the optical connector ferrule has a single optical fiber holding hole.
- the optical connector ferrule has two inspection holes.
- the number of inspection holes may be one or three or more.
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Abstract
Description
最初に、本発明の実施形態の内容を列記して説明する。本発明の一実施形態に係る光コネクタフェルールは、樹脂製の光コネクタフェルールであって、第1面に達する貫通孔であって挿入された光ファイバを保持する光ファイバ保持孔と、光ファイバ保持孔の軸線上に設けられたレンズ構造と、光ファイバ保持孔に沿って形成され第1面に達する貫通孔である検査用孔と、を有する。
本発明の実施形態に係る光コネクタフェルールの具体例を、以下に図面を参照しつつ説明する。なお、本発明はこれらの例示に限定されるものではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味及び範囲内でのすべての変更が含まれることが意図される。以下の説明では、図面の説明において同一の要素には同一の符号を付し、重複する説明を省略する。なお、以下の説明においては、光コネクタフェルールの幅方向をX方向、高さ方向をY方向、X方向及びY方向と交差する方向(光コネクタの接続方向)をZ方向として説明する。
図6は、上記実施形態の第1変形例に係るフェルール10Bの正面図である。また、図7Aは、図6に示されたVIIa-VIIa線に沿った断面図であり、図7Bは、図6に示されたVIIb-VIIb線に沿った断面図である。本変形例のフェルール10Bは、上記実施形態のフェルール10Aの構成に加えて、2つのマーク21,22を更に有する。マーク21は、検査用孔17との位置合わせのために、フェルール端面10aにおける検査用孔17の軸線上の領域に設けられている。同様に、マーク22は、検査用孔18との位置合わせのために、フェルール端面10aにおける検査用孔18の軸線上の領域に設けられている。
図8は、上記実施形態の第2変形例に係るフェルール10Cの正面図である。このフェルール10Cでは、複数の光ファイバ保持孔13の面14aにおける開口が、X方向に一列に並んで形成されている。そして、第1の検査用孔17の面14aにおける開口は、当該列の一端側に並んで形成されており、第2の検査用孔18の面14aにおける開口は、当該列の他端側に並んで形成されている。
図9は、上記実施形態の第3変形例に係るフェルール10Dの断面図である。この変形例では、フェルール端面10aに設けられていた複数のレンズ構造16に代えて、面14bに複数のレンズ構造23が設けられている。具体的には、複数のレンズ構造23は、面14bに形成された半球状の凸部であって、フェルール10Dの他の部分と一体に形成されている。
Claims (9)
- 樹脂製の光コネクタフェルールであって、
第1面に達する貫通孔であって挿入された光ファイバを保持する光ファイバ保持孔と、
前記光ファイバ保持孔の軸線上に設けられたレンズ構造と、
前記光ファイバ保持孔に沿って形成され前記第1面に達する貫通孔である検査用孔と、
を備える光コネクタフェルール。 - 前記第1面と対向する第2面と、
前記第2面の裏側に位置し相手側光コネクタフェルールと対向するフェルール端面と、を更に備え、
前記レンズ構造は、前記第2面、前記フェルール端面、及び前記第2面と前記フェルール端面との間の少なくともいずれかに設けられ、
少なくとも前記検査用孔の軸線上においては、前記第2面及び前記フェルール端面が平坦であり且つ前記第2面と前記フェルール端面との間の領域の屈折率分布が均一である、請求項1に記載の光コネクタフェルール。 - 前記検査用孔の内径が前記光ファイバ保持孔の内径と等しい、請求項1または2に記載の光コネクタフェルール。
- 前記光ファイバ保持孔は複数の保持孔を有し、前記レンズ構造は、各保持孔の軸線上にそれぞれ設けられた複数のレンズを有し、前記検査用孔は第1及び第2の検査用孔を有し、
前記複数の保持孔の前記第1面における開口が一列又は複数列に並んで形成されており、
前記第1の検査用孔の前記第1面における開口が何れかの列の一端側に並んで形成されており、
前記第2の検査用孔の前記第1面における開口が何れかの列の他端側に並んで形成されている、請求項1~3のいずれか一項に記載の光コネクタフェルール。 - 前記第2面、前記フェルール端面、及び前記第2面と前記フェルール端面との間の少なくともいずれかに設けられた、前記検査用孔との位置合わせのためのマークを更に備える、請求項2に記載の光コネクタフェルール。
- 前記マークは、前記検査用孔の軸線と重なる平坦部を有する凸状に形成されている、請求項5に記載の光コネクタフェルール。
- 前記マークは、前記検査用孔の軸線方向から見て円形状を呈する、請求項5または6に記載の光コネクタフェルール。
- 前記マークの直径は前記検査用孔の内径と異なる、請求項7に記載の光コネクタフェルール。
- 請求項1~8の何れか一項に記載の光コネクタフェルールと、
前記光ファイバ保持孔に保持される光ファイバと、
を備える光コネクタ。
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CA3013436A CA3013436A1 (en) | 2016-02-16 | 2017-02-14 | Optical connector ferrule and optical connector |
CH00933/18A CH713451B1 (fr) | 2016-02-16 | 2017-02-14 | Ferrule de connecteur optique et un connecteur optique. |
US16/070,818 US10436989B2 (en) | 2016-02-16 | 2017-02-14 | Optical connector ferrule and optical connector |
CN201780010986.2A CN108700715A (zh) | 2016-02-16 | 2017-02-14 | 光连接器插芯及光连接器 |
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JP2016026934A JP6565728B2 (ja) | 2016-02-16 | 2016-02-16 | 光コネクタフェルール |
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WO2020129354A1 (ja) * | 2018-12-20 | 2020-06-25 | 株式会社フジクラ | フェルール構造体、フェルール構造体の製造方法、フェルール、及び、レンズユニット |
JP2020101734A (ja) * | 2018-12-25 | 2020-07-02 | 株式会社フジクラ | フェルール構造体、フェルール構造体の製造方法、フェルール、及び、レンズユニット |
JP2020101613A (ja) * | 2018-12-20 | 2020-07-02 | 株式会社フジクラ | フェルール構造体、フェルール構造体の製造方法、及び、フェルール |
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WO2019207976A1 (ja) * | 2018-04-26 | 2019-10-31 | ソニー株式会社 | 光通信コネクタ、光送信器、光受信器、光通信システム及び光通信ケーブル |
CN110333575A (zh) * | 2019-06-11 | 2019-10-15 | 华为技术有限公司 | 一种光纤插芯及多芯光纤连接器 |
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CA3013436A1 (en) | 2017-08-24 |
US10436989B2 (en) | 2019-10-08 |
CH713451B1 (fr) | 2019-05-31 |
JP2017146408A (ja) | 2017-08-24 |
JP6565728B2 (ja) | 2019-08-28 |
TW201804188A (zh) | 2018-02-01 |
US20190056555A1 (en) | 2019-02-21 |
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