WO2013058216A1 - 光結合部材及びこれを用いた光コネクタ、並びに、光結合部材用保持部材 - Google Patents
光結合部材及びこれを用いた光コネクタ、並びに、光結合部材用保持部材 Download PDFInfo
- Publication number
- WO2013058216A1 WO2013058216A1 PCT/JP2012/076629 JP2012076629W WO2013058216A1 WO 2013058216 A1 WO2013058216 A1 WO 2013058216A1 JP 2012076629 W JP2012076629 W JP 2012076629W WO 2013058216 A1 WO2013058216 A1 WO 2013058216A1
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- WIPO (PCT)
- Prior art keywords
- optical fiber
- optical
- lens
- collimator
- coupling member
- Prior art date
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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
- G02B6/26—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
- G02B6/3833—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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
Definitions
- the present invention relates to an optical coupling member used for condensing light from a light emitting element and entering the optical fiber, or condensing light emitted from the optical fiber to a light receiving element, and light using the same.
- the present invention relates to a connector and a holding member for an optical coupling member.
- the optical coupling member is used when light emitted from the light source propagates in the optical fiber and is emitted into the air as necessary, or when light propagating in the air is incident into the optical fiber.
- it is necessary to appropriately position the end face of the optical fiber and the collimator lens in order to suppress propagation loss.
- a method for positioning the end face of the optical fiber and the collimator lens a method of inserting a separate spacer into the holding member is known (for example, see Patent Document 1).
- optical coupling member used for such an application is required to have a small size on the shape surface and to maintain the positional relationship between the optical fiber and the lens even when the device surface is repeatedly inserted and removed.
- the present invention has been made in view of such problems, and an optical coupling member capable of easily positioning a lens and an optical fiber while suppressing an increase in cost, and an optical connector using the optical coupling member And it aims at providing the holding member for optical coupling members.
- the optical coupling member of the present invention includes an optical fiber, a holding member that holds the optical fiber inserted from an insertion hole formed at one end, and a lens that is accommodated in a housing portion that is formed at the other end of the holding member. And the end face of the lens and / or optical fiber is brought into contact with a tapered surface provided at a position facing the lens and optical fiber in a protrusion formed on the inner surface in the vicinity of the holding part of the holding member. And positioning is performed.
- the lens and / or the end face of the optical fiber are positioned in contact with the tapered surface provided at the position facing the lens and the optical fiber in the protrusion formed on the inner surface of the holding member.
- the lens and / or the optical fiber can be positioned with reference to the protrusion, so that the working efficiency can be improved as compared with the case where a separate spacer is inserted into the holder holding member as in the prior art.
- the protruding portion having a tapered surface in part is provided on the inner surface of the holding member, the protruding portion having a contact surface orthogonal to the optical fiber insertion direction is provided.
- the occurrence of problems that may occur can be prevented.
- a protrusion having a contact surface perpendicular to the optical fiber insertion direction is provided by cutting on a metal holding member, extremely fine processing technology is required, and it is difficult to ensure dimensional accuracy.
- burrs are easily generated during processing, and the generated burrs block the optical path between the optical fiber and the lens and adversely affect the propagation.
- the protrusion having a ring shape disposed on the same plane orthogonal to the insertion direction of the optical fiber it is preferable to provide the protrusion having a ring shape disposed on the same plane orthogonal to the insertion direction of the optical fiber.
- the projecting portion having an annular shape arranged on the same plane is provided, the lens and the optical fiber can be brought into contact with the projecting portion at an annular position, so that the lens can be more accurately obtained. And / or positioning of the optical fiber can be performed.
- the optical coupling member it is preferable to provide a plurality of protrusions on the same plane perpendicular to the insertion direction of the optical fiber.
- the lens and / or the optical fiber can be brought into contact with the protrusions at a plurality of positions, respectively.
- the optical fiber can be positioned.
- the space formed between the plurality of protrusions can function as an air escape path when the lens and the optical fiber are inserted, smooth positioning can be performed.
- the angle of the taper surface of the projection facing the optical fiber and the angle of the taper surface of the projection facing the lens are orthogonal to the insertion direction of the optical fiber.
- the angles are different from each other. In this way, by setting the angle of the tapered surface facing the lens in the protrusion and the angle of the tapered surface facing the optical fiber to be different angles, it is possible to effectively position the lens and the optical fiber having different shapes. It becomes possible.
- the optical connector of the present invention is characterized by connecting the optical coupling member of any one of the above-described aspects. According to this optical connector, it is possible to obtain the effects obtained by the optical coupling member described above.
- a holding member for an optical coupling member according to the present invention is provided at a holding body for holding an optical fiber, at one end of the holding body, a receiving portion for storing a lens, and at the other end of the holding body, An insertion hole for inserting the optical fiber, and the lens on a tapered surface provided at a position facing the lens and the optical fiber in a projection formed on the inner surface in the vicinity of the holding portion of the holding body And / or positioning by bringing the end face of the optical fiber into contact with each other.
- the end face of the lens and / or the optical fiber is brought into contact with a tapered surface provided at a position facing the lens and the optical fiber in the protrusion formed on the inner surface of the holding body. Since the lens and / or the optical fiber can be positioned on the basis of the protrusion, compared to the case where a separate spacer is inserted into the holder holding member as in the prior art, The working efficiency can be improved, and the lens and the optical fiber can be easily positioned while suppressing an increase in cost.
- the protrusion having an annular shape arranged on the same plane orthogonal to the insertion direction of the optical fiber it is preferable to provide the protrusion having an annular shape arranged on the same plane orthogonal to the insertion direction of the optical fiber.
- the projecting portion having an annular shape arranged on the same plane is provided, the lens and the optical fiber can be brought into contact with the projecting portion at an annular position, so that the lens can be more accurately obtained. And / or positioning of the optical fiber can be performed.
- the optical coupling member holding member it is preferable to provide a plurality of protrusions on the same plane perpendicular to the optical fiber insertion direction.
- the lens and / or the optical fiber can be brought into contact with the protrusions at a plurality of positions, respectively.
- the optical fiber can be positioned.
- the space formed between the plurality of protrusions can function as an air escape path when the lens and the optical fiber are inserted, smooth positioning can be performed.
- the angle of the tapered surface of the projection facing the optical fiber and the angle of the taper surface of the projection facing the lens are orthogonal to the insertion direction of the optical fiber. It is preferable that the angles are different with respect to the plane. In this way, by setting the angle of the tapered surface facing the lens in the protrusion and the angle of the tapered surface facing the optical fiber to be different angles, it is possible to effectively position the lens and the optical fiber having different shapes. It becomes possible.
- the present invention it is possible to easily position the lens and the optical fiber while suppressing an increase in cost.
- FIG. 3 is a cross-sectional view taken along the line AA shown in FIG.
- FIG. 4 is an enlarged view within a two-dot chain line B shown in FIG. 3.
- FIG. 6 is an enlarged view in a two-dot chain line E shown in FIG. 5.
- FIG. 8 is an enlarged view within a two-dot chain line H shown in FIG. 7.
- FIG. 1 is a side sectional view schematically showing an optical connector to which an optical collimator according to the present invention is connected.
- a semiconductor laser chip and an optical connector provided with an optical lens on the optical axis of the semiconductor laser chip will be described as a light source emitted to the optical collimator. It is not limited to these, and can be changed as appropriate.
- a semiconductor laser chip 101 is disposed on a mount base 103 of a case 102 and optically on the optical axis of the semiconductor laser chip 101.
- a semiconductor laser unit 105 having a lens 104 is provided.
- the optical connector 100 includes an adapter 108 having an opening 106 attached to the side surface 102 a of the case 102 and holding the holder 11 of the optical collimator 10 inserted from the insertion port 107.
- the laser light emitted from the semiconductor laser chip 101 is converted into parallel light by the optical lens 104 and guided to the opening 106.
- the parallel light from the optical lens 104 is collected by the collimator lens 12 of the optical collimator 10 and is incident on the optical fiber 13. The incident light is propagated through the optical fiber 13.
- the optical connector 100 when the optical collimator 10 is inserted to a predetermined position of the adapter 108, the optical lens 104 and the collimator lens 12 are aligned, and laser light from the semiconductor laser chip 101 is obtained. Are designed to be able to enter the optical fiber 13 appropriately.
- the configuration of the optical collimator 10 according to the present embodiment connected to such an optical connector 100 will be described.
- FIG. 2 is a side view of the optical collimator 10 according to the first embodiment of the present invention.
- 3 is a cross-sectional view taken along line AA shown in FIG.
- the optical collimator 10 according to the first embodiment includes a holder 11 as a holding member having a generally cylindrical shape, and a collimator lens 12 held at one end of the holder 11. And an optical fiber 13 inserted from an insertion hole 11 a provided at the other end of the holder 11.
- a plastic optical fiber is preferably inserted as the optical fiber 13.
- the holder 11 is formed of, for example, a metal material such as stainless steel. In particular, from the viewpoint of workability, the holder 11 is preferably formed of ferritic stainless steel. As shown in FIG. 3, an opening 11b is provided at the end of the holder 11 on the collimator lens 12 side. A housing portion 11c for housing the collimator lens 12 is provided inside the opening portion 11b.
- the accommodating portion 11c is provided with a size slightly smaller than the diameter of the collimator lens 12, and is configured such that the collimator lens 12 can be press-fitted. In order to prevent damage to the surface of the collimator lens 12, the accommodating portion 11c is provided with a size that allows the entire collimator lens 12 to be accommodated therein.
- a through hole 11 d having a diameter slightly larger than the outer diameter of the optical fiber 13 is provided inside the holder 11.
- the through hole 11d communicates with the insertion hole 11a and is also communicated with the accommodating portion 11c.
- a protrusion 11 e that protrudes inward in the radial direction of the holder 11 is provided on the inner peripheral surface of the holder 11.
- the protrusion 11e is provided between the accommodating portion 11c and the through hole 11d, and is used for positioning the collimator lens 12 and the optical fiber 13 as will be described in detail later.
- the protrusion 11 e has an annular shape and is formed on the entire circumference of the holder 11 on the same circumference.
- the holder 11 having such a configuration is formed by, for example, cutting a cylindrical member made of a metal material such as stainless steel.
- the collimator lens 12 is made of, for example, a glass material, and is composed of a ball lens having a spherical shape.
- the collimator lens 12 is constituted by, for example, a ball lens having an outer diameter of 0.3 to 1.5 mm.
- the collimator lens 12 faces the opening 106 of the adapter 108 from the opening 11b while being accommodated in the housing 11c of the holder 11, and the optical fiber 13 inserted into the through hole 11d. It arrange
- the optical fiber 13 is made of, for example, a plastic optical fiber, and includes a core 13a provided through the center thereof, a first cladding 13b that covers the core 13a, and a second cladding 13c that covers the first cladding 13b. It consists of and. Both the core 13a and the two-layer clad (the first clad 13b and the second clad 13c) are made of a plastic material. On the end surface of the optical fiber 13 facing the collimator lens 12, the core 13a, the first cladding 13b, and the second cladding 13c are arranged on the same plane. That is, the core 13a, the first cladding 13b, and the second cladding 13c are arranged on the end face facing the collimator lens 12.
- the optical fiber 13 is inserted into the through hole 11d through the insertion hole 11a, and is fixed in a state where the tip portion thereof is disposed in the vicinity of the collimator lens 12 so as to face the spherical surface.
- the optical fiber 13 is fixed to the holder 11 by, for example, an adhesive applied between the inner peripheral surface of the through hole 11d.
- the fixing of the optical fiber 13 to the holder 11 is not limited to this, and any fixing method can be applied.
- the optical fiber 13 is composed of, for example, a graded index (GI) optical fiber so that the refractive index continuously changes in a cross section perpendicular to the fiber axis. It is configured.
- the core 13a and the first cladding 13b are made of, for example, an all-fluorine-substituted optical resin in which H of C—H bond is substituted with F.
- the optical fiber 13 is made of a perfluorinated optical resin and is made of a GI type optical fiber, whereby high-speed and large-capacity communication can be realized.
- the holder 11 is provided to easily position the collimator lens 12 and the optical fiber 13 while suppressing an increase in cost.
- the protruding portion 11e is used. Specifically, the collimator lens 12 and the tapered surface provided on a part of the protrusion 11e provided on the holder 11 (more specifically, a position facing the collimator lens 12 and the optical fiber 13 on the protrusion 11e). By positioning a part of the optical fiber 13 in contact with each other, the positioning of the collimator lens 12 and the optical fiber 13 can be easily performed while suppressing the increase in cost, eliminating the need for such a positioning spacer. Is possible.
- FIG. 4 is an enlarged view inside the two-dot chain line B shown in FIG.
- a part of the projecting portion 11 e that faces the collimator lens 12 abuts a part of the collimator lens 12, while a portion that faces the optical fiber 13 constitutes the optical fiber 13.
- a part of the first cladding 13b and / or the second cladding 13c other than the core 13a abuts.
- the collimator lens 12 and the optical fiber 13 are each positioned at a predetermined position of the holder 11 in such a state of contact.
- the protrusion 11e is a plane orthogonal to the insertion direction of the optical fiber 13 (for example, a plane C that is arranged in parallel with the end face of the optical fiber 13 shown in FIG. 4 and passes through the center of the protrusion 11e. ),
- the angle of the portion facing the collimator lens 12 and the angle of the portion facing the optical fiber 13 are different from each other.
- Such a protruding portion 11 e is provided by, for example, performing cutting using a tool having a diameter smaller than that of the holder 11 in the extending direction of the holder 11.
- such a protruding portion 11 e has an annular shape arranged on the same circumference of the holder 11.
- the tapered surface 11e 1 is a plane perpendicular to the insertion direction of the optical fiber 13 indicated by an arrow in FIG. 4 (for example, is disposed in parallel with the end surface of the optical fiber 13 shown in FIG. 4 and passes through the proximal end portion of the protrusion 11e. provided so that the angle theta 1 is less than 5 ° 30 ° or less with respect to the plane D) to.
- the optical fiber 13 in the collimator lens 12 is set. Since it can position in the state which supported a part of the side, the positional accuracy of the collimator lens 12 can be improved.
- the surface of the portion of the protrusion 11e facing the collimator lens 12 is removed by cutting, pressing (pressing), grinding, or energy beam processing.
- a contact surface with the collimator lens 12 is formed. Since the contact surface with the collimator lens 12 is formed by removing the surface of the projection 11e facing the collimator lens 12 in this way, the contact surface of the collimator lens 12 with the projection 11e is smoothed. Therefore, the collimator lens 12 can be prevented from being damaged, and the position accuracy of the collimator lens 12 can be further increased.
- Such removal processing is similarly performed in the optical collimators 20 and 30 according to the second and third embodiments described below.
- the portion facing the optical fiber 13 in the projecting portion 11e constitutes a tapered surface 11e 2.
- the taper surface 11e 2 has an angle ⁇ 2 with respect to a plane orthogonal to the insertion direction of the optical fiber 13 (for example, a plane D arranged parallel to the end face of the optical fiber 13 shown in FIG. 4) of 5 ° or more and 30 ° or less. It is provided as follows.
- the optical fiber 13 has the same core 13a, first cladding 13b, and second cladding 13c as described above.
- the optical fiber 13 for example, plastic optical fiber
- the positional accuracy of the optical fiber 13 can be easily ensured by bringing the end face of the optical fiber 13 into contact with the protrusion 11e. It is possible.
- a part of the collimator lens 12 and one of the optical fibers 13 are formed on the tapered surface provided on a part of the protrusion 11e provided on the holder 11. Since the collimator lens 12 and the optical fiber 13 can be positioned with reference to the protrusion 11e, the spacers of separate members are inserted into the holder 11 as in the past. Compared with the case where it does, work efficiency can be improved and it becomes possible to perform positioning of the collimator lens 12 and the optical fiber 13 easily, suppressing an increase in cost.
- the optical collimator 10 since the protruding portion 11e having the tapered surfaces 11e 1 and 11e 2 in part is provided on the inner peripheral surface of the holder 11, the optical fiber 13 is inserted in the insertion direction.
- the protruding portion 11e having the tapered surfaces 11e 1 and 11e 2 in part is provided on the inner peripheral surface of the holder 11, the optical fiber 13 is inserted in the insertion direction.
- a protrusion having a contact surface orthogonal to the insertion direction of the optical fiber 13 is provided on the metal holder 11 by cutting, an extremely fine processing technique is required, and dimensional accuracy can be ensured. There is a problem that it is difficult.
- the collimator lens 12 and the optical fiber 13 are positioned by the protrusion 11e, while being applied between the inner peripheral surface of the through hole 11d.
- the optical fiber 13 is fixed by an adhesive or the like.
- the through hole 11d is configured to have a length sufficient for fixing the optical fiber 13, the through hole 11d is firmly fixed in a state where the optical fiber 13 is positioned. For this reason, the positional relationship between the optical fiber 13 and the collimator lens 12 is maintained even when the optical fiber 13 is used for performing large-capacity communication between devices or within the device, even when insertion and removal is repeated. be able to.
- the positioning method of the collimator lens 12 and the optical fiber 13 is not limited to this, and can be appropriately changed.
- both the collimator lens 12 and the optical fiber 13 are not brought into contact with the protrusion 11e, but one of the collimator lens 12 and the optical fiber 13 is brought into contact with the other, and the other of the holder 11 other than the protrusion 11e. You may make it perform positioning in a part.
- the portion for positioning the other is designed in a fixed positional relationship with respect to the protrusion 11e. That is, in the optical collimator 10 according to the present invention, the idea of bringing one of the collimator lens 12 or the optical fiber 13 into contact with the protrusion 11e is also included.
- the aspect in which one of the collimator lens 12 or the optical fiber 13 is brought into contact with the protrusion 11e is the same for the optical collimators 20 and 30 according to the second and third embodiments described below.
- the holder 11 having the protrusion 11e is formed on the inner peripheral surface by cutting the holder 11 made of a metal material.
- the material and the forming method of the holder 11 are not limited to this, and can be changed as appropriate.
- the holder 11 can be formed of a resin material such as plastic or ceramic. Specifically, it can be considered that the resin material is formed by molding.
- examples of the resin material used for the holder 11 include polystyrene (PS) resin, polyoxymethylene (POM) resin, ABS resin, polybutylene terephthalate (PBT) resin, polyethylene terephthalate (PET) resin, and polyphenylene oxide.
- PPO polystyrene
- POM polyoxymethylene
- ABS polybutylene terephthalate
- PET polyethylene terephthalate
- PPO polyphenylene oxide
- PC polycarbonate
- m-PPE modified polyphenylene ether
- PEEK polyether ether ketone
- PEI polyetherimide
- the core 13a and the clad (the first clad 13b and the second clad 13c) are provided with an optical fiber 13 made of a plastic material is described.
- the configuration of the optical fiber 13 is not limited to this, and an optical fiber 13 having another configuration can be applied.
- the core 13a can be made of quartz glass and the clad can be made of a hard plastic clad fiber (H-PCF) made of high-hardness plastic.
- H-PCF hard plastic clad fiber
- the optical collimator according to the second embodiment differs from the optical collimator 10 according to the first embodiment in that the configuration of the protrusions is different.
- the configuration of the optical collimator according to the second embodiment will be described focusing on differences from the optical collimator 10 according to the second embodiment.
- FIG. 5 is a cross-sectional view of the optical collimator 20 according to the second embodiment of the present invention.
- FIG. 6 is an enlarged view inside the two-dot chain line E shown in FIG.
- the appearance of the optical collimator 20 according to the second embodiment is the same as that of the optical collimator 10 according to the first embodiment shown in FIG. 5 and 6, the same reference numerals are given to the same components as those of the optical collimator 10 according to the first embodiment shown in FIGS. 3 and 4, and the description thereof is omitted.
- a plurality of protrusions 11 f are provided on the same circumference of the holder 11 between the accommodating portion 11 c and the through hole 11 d. In the embodiment, three) are provided.
- the plurality of protrusions 11f are provided on the same circumference as described above.
- the collimator lens 12 and the optical fiber 13 can be brought into contact with each other at a plurality of positions, so that the collimator lens 12 and the optical fiber 13 can be positioned with high accuracy. Can be performed.
- the space formed between the plurality of protrusions 11f can function as an air escape path when the collimator lens 12 and the optical fiber 13 are inserted, smooth positioning can be performed.
- a method of positioning the collimator lens 12 and the optical fiber 13 in the holder 11 of the optical collimator 20 having such a protrusion 11f will be described.
- a part of the projecting portion 11 f that faces the collimator lens 12 is in contact with a part of the collimator lens 12, while a portion that faces the optical fiber 13 constitutes the optical fiber 13.
- Part of the first cladding 13b and the second cladding 13c abut.
- the collimator lens 12 and the optical fiber 13 are each positioned at a predetermined position of the holder 11 in such a state of contact.
- a tapered surface 11f 1 is a plane orthogonal to the insertion direction of the optical fiber 13 indicated by an arrow in FIG. 6 (for example, the end surface of the optical fiber 13 shown in FIG. 6), similarly to the protrusion 11e according to the first embodiment. and arranged in parallel, it is provided so that the angle theta 3 with respect to the plane F) passing through the base end portion of the protrusion 11f is 30 ° or less 5 ° or more.
- the collimator lens 12 having a spherical shape is formed. Therefore, the position accuracy of the collimator lens 12 can be improved.
- the tapered surface 11f 2 is a plane orthogonal to the insertion direction of the optical fiber 13 (for example, a plane arranged in parallel with the end surface of the optical fiber 13 shown in FIG. 6), like the protrusion 11e according to the first embodiment. provided so that the angle theta 4 is 5 ° or more than 30 ° with respect to G).
- the optical fiber 13 By providing the angle of the tapered surface 11f 2 to 30 ° or less 5 ° or more with respect to a plane G, the optical fiber 13, as described above, and the core 13a and the first cladding 13b and a second cladding 13c
- optical fibers for example, plastic optical fibers
- the collimator lens 12 and the optical fiber 13 are used with reference to the protrusion 11f.
- the working efficiency can be improved and the collimator lens can be easily reduced while suppressing the cost increase. It becomes possible to position 12 and the optical fiber 13.
- the protrusion 11f is provided at an angle where the angle of the portion facing the collimator lens 12 and the angle of the portion facing the optical fiber 13 are different.
- the point is the same as that of the optical collimator 10 according to the first embodiment.
- the protrusion 11f having the tapered surfaces 11f 1 and 11f 2 in part is provided on the inner peripheral surface of the holder 11 according to the first embodiment. This is the same as the optical collimator 10. For this reason, also in the optical collimator 20 according to the second embodiment, it is possible to prevent the occurrence of problems that may occur when a protrusion having a contact surface orthogonal to the insertion direction of the optical fiber 13 is provided. Is possible.
- the configuration of the inserted optical fiber is different, and the shape of the protrusion for positioning the optical fiber is different depending on the configuration of the optical fiber. This is different from the optical collimator 10 according to the first embodiment.
- the configuration of the optical collimator according to the third embodiment will be described focusing on differences from the optical collimator 10 according to the first embodiment.
- FIG. 7 is a cross-sectional view of an optical collimator 30 according to a third embodiment of the present invention.
- FIG. 8 is an enlarged view inside the two-dot chain line H shown in FIG.
- the appearance of the optical collimator 30 according to the third embodiment is the same as that of the optical collimator 10 according to the first embodiment shown in FIG. 7 and 8, the same reference numerals are given to the same components as those of the optical collimator 10 according to the first embodiment shown in FIGS. 3 and 4, and the description thereof is omitted.
- the optical fiber 15 inserted into the optical collimator 30 according to the third embodiment is composed of, for example, a glass optical fiber, and a core 15a provided through the center thereof, and a first cladding that covers the core 15a 15b and a second clad 15c that further covers the first clad 15b.
- Both the core 15a and the two-layer clad are made of a glass material.
- the optical fiber 15 has an end surface facing the collimator lens 12 from which the coating of the second cladding 15c is removed, and the first cladding 15b and the core 15a protrude toward the collimator lens 12 side. ing. That is, at the end face facing the collimator lens 12, the core 15a and the first clad 15b protrude from the end face formed by the second clad 15c to the collimator lens 12 side.
- a protrusion 11g for positioning the collimator lens 12 and the optical fiber 15 is provided between the housing 11c in the holder 11 and the through hole 11d.
- the protrusion 11g has a different shape from the protrusion 11e according to the first embodiment, depending on the configuration of the optical fiber 15 described above. Specifically, the shape of the portion facing the optical fiber 15 is different from the protrusion 11e according to the first embodiment. The shape of the protrusion 11g will be described later.
- a method of positioning the collimator lens 12 and the optical fiber 15 in the holder 11 of the optical collimator 30 having such a protrusion 11g will be described.
- a part of the protrusion 11 g that faces the collimator lens 12 is in contact with a part of the collimator lens 12, while a part that faces the optical fiber 15 constitutes the optical fiber 15.
- a part of the second cladding 15c comes into contact.
- the core 15a and the first clad 15b are arranged so as to protrude to the collimator lens 12 side from the contact position with the protrusion 11g.
- the collimator lens 12 and the optical fiber 15 are each positioned at a predetermined position of the holder 11 in such a state of contact.
- a portion facing the collimator lens 12 in the projection portion 11g constitutes a tapered surface 11g 1.
- the tapered surface 11g 1 has the same configuration as the tapered surface 11e 1 of the protrusion 11e according to the first embodiment, and is a plane orthogonal to the insertion direction of the optical fiber 15 indicated by an arrow in FIG. disposed in parallel with the end face of the optical fiber 15 shown in FIG. 8, it is provided so that the angle theta 5 with respect to the plane I) passing through the base end portion of the protruding portion 11g is 30 ° or less 5 ° or more.
- the collimator lens 12 having a spherical shape is used. Since it can position in the state which supported a part by the side of the optical fiber 15, the positional accuracy of the collimator lens 12 can be improved.
- the portion facing the optical fiber 15 at the protruding portion 11g constitutes a tapered surface 11g 2.
- Tapered surface 11g 2 is a plane perpendicular to the insertion direction of the optical fiber 13 (e.g., plane J arranged parallel to the end face of the second cladding 15c of the optical fiber 15 shown in FIG. 8) the angle theta 6 is 30 ° or more with respect to It is provided so that it may be 80 degrees or less. In this way, by setting the angle of the protruding portion 11g facing the optical fiber 15 to 30 ° or more and 80 ° or less with respect to the plane J orthogonal to the insertion direction of the optical fiber 15, the optical fiber 15 is as described above.
- the core 15a, the first clad 15b, and the second clad 15c, and the core 15a and the first clad are constituted by an optical fiber (for example, a glass optical fiber) disposed so as to protrude from the plane of the second clad 15c.
- an optical fiber for example, a glass optical fiber
- the optical fiber 15 can be inserted smoothly, and the positional accuracy of the collimator lens 12 and the optical fiber 15 can be easily secured.
- the collimator lens 12 and the optical fiber 15 can be positioned with reference to the protrusion 11g. Therefore, as compared with the conventional case where a separate spacer is inserted into the holder 11, the working efficiency can be improved, and the collimator lens 12 and the optical fiber 15 can be easily changed while suppressing an increase in cost. It is possible to perform positioning.
- the protrusion 11g is provided at an angle where the angle of the portion facing the collimator lens 12 and the angle of the portion facing the optical fiber 15 are different.
- the point and the point provided in the annular shape on the same circumference of the holder 11 are the same as those of the optical collimator 10 according to the first embodiment. For this reason, also in the optical collimator 30 which concerns on 3rd Embodiment, it is possible to acquire the effect by the structure of these protrusion parts 11g.
- the protrusion 11g having the tapered surfaces 11g 1 and 11g 2 in part is provided on the inner peripheral surface of the holder 11 according to the first embodiment. This is the same as the optical collimator 10. For this reason, also in the optical collimator 30 according to the third embodiment, it is possible to prevent the occurrence of problems that may occur when a protrusion having a contact surface orthogonal to the insertion direction of the optical fiber 15 is provided. Is possible.
- the glass optical fiber was demonstrated as an example of the optical fiber 15, the optical fiber 15 applied in the optical collimator 30 which concerns on 3rd Embodiment is glass.
- the optical fiber is not limited.
- a plastic optical fiber can be applied as long as a part of the end face on the collimator lens 12 side is protruded.
- such a plastic optical fiber may correspond to a case where a coating layer covering the outer periphery of the cladding is formed, and only the core and the cladding are arranged to protrude from the end face of the coating layer.
- the optical collimator 10 (20, 30) that collects the parallel light and enters the optical fiber or converts the light emitted from the optical fiber into the parallel light. It explains using.
- the optical coupling member according to the present invention is not limited to the optical collimator. It can be applied to an optical coupling member having an arbitrary configuration on the premise that the light from the light emitting element is collected and incident on the optical fiber, or the light emitted from the optical fiber is condensed on the light receiving element. .
- the said embodiment demonstrated the case where the collimator lens 12 with which the optical collimator 10 (20, 30) was comprised with a glass material, about the structure of the collimator lens 12, it is limited to this. It is not a thing and it can change suitably.
- the collimator lens 12 may be made of a plastic material, and the shape thereof is not limited to a spherical lens.
- the configuration of the holder 11 is not limited to the cylindrical shape, and can be changed as appropriate. Any shape can be adopted on the premise that the receiving portion 11c of the collimator lens 12 is formed at one end and the insertion hole of the optical fiber 13 is formed at the other end.
- the receiving portion 11c of the collimator lens 12 is formed at one end and the insertion hole of the optical fiber 13 is formed at the other end.
- those having a rectangular tube shape that is, a tube shape in which a cross section orthogonal to the insertion direction of the optical fiber 13 is a quadrangle
- a rectangular tube shape that is, a tube shape in which a cross section orthogonal to the insertion direction of the optical fiber 13 is a quadrangle
- the protrusion 11e is on the same plane orthogonal to the insertion direction of the optical fiber 13 on the inner surface of the holder 11. It is provided in the arranged ring shape. The same applies to the protrusion 11g when applied to the optical collimator 30 according to the third embodiment. Further, when the holder 11 having a rectangular tube shape is applied to the optical collimator 20 according to the second embodiment, the protrusion 11 f is on the same plane orthogonal to the insertion direction of the optical fiber 13 on the inner surface of the holder 11. A plurality are provided.
- the case where this invention is embodied in the optical collimator 10 (20, 30) and the optical connector to which this is connected is demonstrated.
- this invention is not limited to these, It is materialized also as a holding member for optical coupling members comprised with the holder 11 which the said optical collimator 10 (20, 30) has.
- the optical coupling member holding member is provided at, for example, a holding body constituted by the entire holder 11 and one end of the holding body, and a lens (for example, a collimator lens 12 in the case of the optical collimator holding member). ) Is formed on the inner surface in the vicinity of the holding portion 11c of the holding body, the insertion hole 11a for inserting the optical fiber 13 (15).
- projections 11e (11f, 11g) is formed in the vicinity of housing portion 11c by providing a lens and the tapered surfaces 11e 1 for positioning by the abut at least one end face of the optical fiber 13 (15), 11e 2 (a tapered surface 11f 1, 11f 2, the tapered surface 11g 1, 11g 2) comprises a.
- the holding member for an optical coupling member at least one of the lens and the optical fiber 13 (15) is brought into contact with a part of the protrusion 11e (11f, 11g) provided in the vicinity of the accommodating portion 11c.
- the taper surfaces 11e 1 and 11e 2 taper surfaces 11f 1 and 11f 2, taper surfaces 11g 1 and 11g 2 ) for positioning are provided, so that the lens and / or the projection and the projection 11e (11f and 11g) are used as a reference.
- the optical fiber 13 (15) can be positioned, the working efficiency can be improved and the cost can be increased as compared with the case where a separate spacer is inserted into the holder holding member as in the prior art. It is possible to easily position the lens and the optical fiber 13 (15) while suppressing.
Abstract
Description
図2は、本発明の第1の実施に係る光コリメータ10の側面図である。図3は、図2に示すA-Aにおける断面図である。図2及び図3に示すように、第1の実施の形態に係る光コリメータ10は、概して円筒形状を有する保持部材としてのホルダ11と、このホルダ11の一端部に保持されるコリメータレンズ12と、ホルダ11の他端部に設けられた挿入孔11aから挿入される光ファイバ13とを含んで構成されている。なお、本実施の形態に係る光コリメータ10においては、光ファイバ13としてプラスチック光ファイバが好適に挿入される。
第2の実施の形態に係る光コリメータにおいては、突起部の構成が異なる点において、第1の実施の形態に係る光コリメータ10と相違する。以下、第2の実施の形態に係る光コリメータの構成について、第2の実施の形態に係る光コリメータ10との相違点を中心に説明する。
第3の実施の形態に係る光コリメータにおいては、挿入される光ファイバの構成が異なる点、並びに、この光ファイバの構成に応じてこれを位置決めするための突起部の形状が異なる点において、第1の実施の形態に係る光コリメータ10と相違する。以下、第3の実施の形態に係る光コリメータの構成について、第1の実施の形態に係る光コリメータ10との相違点を中心に説明する。
Claims (9)
- 光ファイバと、一端に形成された挿入孔から挿入された前記光ファイバを保持する保持部材と、前記保持部材の他端に形成された収容部に収容されるレンズとを具備し、前記保持部材の収容部近傍の内側面に形成された突起部における前記レンズ及び光ファイバに対向する位置に設けられたテーパ面に前記レンズ及び/又は光ファイバの端面を当接させて位置決めを行うことを特徴とする光結合部材。
- 前記光ファイバの挿入方向と直交する同一平面上に配置された環形状を有する前記突起部を設けたことを特徴とする請求項1記載の光結合部材。
- 前記光ファイバの挿入方向と直交する同一平面上に複数の前記突起部を設けたことを特徴とする請求項1記載の光結合部材。
- 前記光ファイバに対向する前記突起部のテーパ面の角度と、前記レンズに対向する前記突起部のテーパ面の角度とを前記光ファイバの挿入方向と直交する平面に対して異なる角度としたことを特徴とすることを特徴とする請求項1記載の光結合部材。
- 請求項1記載の光結合部材を接続することを特徴とする光コネクタ。
- 光ファイバを保持する保持体と、前記保持体の一端に設けられ、レンズを収容するための収容部と、前記保持体の他端に設けられ、前記光ファイバを挿入するための挿入孔とを具備し、前記保持体の収容部近傍の内側面に形成された突起部における前記レンズ及び光ファイバに対向する位置に設けられたテーパ面に前記レンズ及び/又は光ファイバの端面を当接させて位置決めを行うことを特徴とする光結合部材用保持部材。
- 前記光ファイバの挿入方向と直交する同一平面上に配置された環形状を有する前記突起部を設けたことを特徴とする請求項6記載の光結合部材用保持部材。
- 前記光ファイバの挿入方向と直交する同一平面上に複数の前記突起部を設けたことを特徴とする請求項6記載の光結合部材用保持部材。
- 前記光ファイバに対向する前記突起部のテーパ面の角度と、前記レンズに対向する前記突起部のテーパ面の角度とを前記光ファイバの挿入方向と直交する平面に対して異なる角度としたことを特徴とすることを特徴とする請求項6に記載の光結合部材用保持部材。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/351,903 US9638860B2 (en) | 2011-10-18 | 2012-10-15 | Optical coupling member and optical connector using the same, and optical coupling member holding member |
KR1020147009555A KR101854956B1 (ko) | 2011-10-18 | 2012-10-15 | 광 결합 부재 및 이것을 이용한 광 커넥터, 및 광 결합 부재용 유지 부재 |
EP12842569.1A EP2770354A4 (en) | 2011-10-18 | 2012-10-15 | OPTICAL CONNECTING ELEMENT, OPTICAL CONNECTOR THEREBY AND ELEMENT FOR HOLDING THE OPTICAL CONNECTOR ELEMENT |
CN201280051390.4A CN103890626A (zh) | 2011-10-18 | 2012-10-15 | 光耦合构件和使用该光耦合构件的光连接器、以及光耦合构件用保持构件 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011-229139 | 2011-10-18 | ||
JP2011229139A JP5851793B2 (ja) | 2011-10-18 | 2011-10-18 | 光結合部材及びこれを用いた光コネクタ、並びに、光結合部材用保持部材 |
Publications (1)
Publication Number | Publication Date |
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WO2013058216A1 true WO2013058216A1 (ja) | 2013-04-25 |
Family
ID=48140863
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2012/076629 WO2013058216A1 (ja) | 2011-10-18 | 2012-10-15 | 光結合部材及びこれを用いた光コネクタ、並びに、光結合部材用保持部材 |
Country Status (7)
Country | Link |
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US (1) | US9638860B2 (ja) |
EP (1) | EP2770354A4 (ja) |
JP (1) | JP5851793B2 (ja) |
KR (1) | KR101854956B1 (ja) |
CN (1) | CN103890626A (ja) |
TW (1) | TWI584009B (ja) |
WO (1) | WO2013058216A1 (ja) |
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US10291332B2 (en) * | 2017-04-11 | 2019-05-14 | Innovatice Micro Technology | Self-aligned silicon fiber optic connector |
JP6969459B2 (ja) | 2018-03-15 | 2021-11-24 | オムロン株式会社 | センサヘッド |
JP2022094172A (ja) * | 2020-12-14 | 2022-06-24 | パナソニックIpマネジメント株式会社 | 発光装置、製造方法、及び導波構造体 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02281216A (ja) * | 1989-04-21 | 1990-11-16 | Matsushita Electric Ind Co Ltd | 半導体レーザモジュール |
JPH0538606U (ja) * | 1991-10-23 | 1993-05-25 | 日新電機株式会社 | ボールレンズコリメータ |
JPH05196840A (ja) * | 1992-01-22 | 1993-08-06 | Anritsu Corp | 光ファイバコリメータ |
JPH07120642A (ja) * | 1993-10-21 | 1995-05-12 | Mitsubishi Rayon Co Ltd | 光ファイバ式光電スイッチ用アタッチメント |
JPH10160992A (ja) * | 1996-12-04 | 1998-06-19 | Mitsubishi Cable Ind Ltd | 内視鏡用レンズ固定構造及びレンズ固定方法 |
JP2004004431A (ja) * | 2002-01-10 | 2004-01-08 | Furukawa Electric Co Ltd:The | 光モジュール及びその製造方法 |
JP2004317627A (ja) * | 2003-04-14 | 2004-11-11 | Fujikura Ltd | マウント、光モジュールおよび送受信モジュール |
JP2005077657A (ja) * | 2003-08-29 | 2005-03-24 | Sharp Corp | 光結合器、光結合器モジュール、およびその製造方法 |
JP2007241094A (ja) | 2006-03-10 | 2007-09-20 | Tyco Electronics Amp Kk | 光ファイバコリメータ |
WO2011129229A1 (ja) * | 2010-04-16 | 2011-10-20 | 三菱鉛筆株式会社 | 光コリメータ及びこれを用いた光コネクタ、並びに、光コリメータ用保持部材 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4632505A (en) * | 1983-10-11 | 1986-12-30 | The Deustsch Company Electronic Components Division | Optical fiber connector |
DE3406424A1 (de) | 1984-02-22 | 1985-02-07 | Siemens AG, 1000 Berlin und 8000 München | Optoelektronisches modulgehaeuse |
JP2715207B2 (ja) * | 1992-01-16 | 1998-02-18 | 株式会社ユニシアジェックス | 内燃機関の電子制御燃料供給装置 |
EP0565999A2 (de) | 1992-04-16 | 1993-10-20 | Siemens Aktiengesellschaft | Anordnung zur optischen Kopplung von zwei Gruppen von Wellenleitern |
JPH06160668A (ja) * | 1992-11-17 | 1994-06-07 | Omron Corp | 光ファイバ装置及び光ファイバ式光センサ |
KR0171844B1 (ko) | 1995-11-10 | 1999-05-01 | 김광호 | 볼렌즈를 이용한 광결합계 장치 및 광결합계 제작방법 |
SE520624C2 (sv) * | 1997-07-18 | 2003-08-05 | Formex Ab | Anordning för optisk anslutning av en optisk fiber till ett annat optiskt element |
US7218811B2 (en) | 2002-01-10 | 2007-05-15 | The Furukawa Electric Co., Ltd. | Optical module, and multi-core optical collimator and lens housing therefor |
WO2010019800A1 (en) * | 2008-08-13 | 2010-02-18 | Nomir Medical Technologies, Inc. | Therapeutic light delivery apparatus, method, and system |
JP2007225894A (ja) * | 2006-02-23 | 2007-09-06 | Matsushita Electric Works Ltd | 光結合部品及びその製造方法 |
US7775725B2 (en) * | 2008-10-29 | 2010-08-17 | Tyco Electronics Corporation | Single-channel expanded beam connector |
JP2011013665A (ja) | 2009-06-04 | 2011-01-20 | Nippon Electric Glass Co Ltd | 光モジュール及びその光モジュール用光学部品 |
-
2011
- 2011-10-18 JP JP2011229139A patent/JP5851793B2/ja not_active Expired - Fee Related
-
2012
- 2012-10-15 WO PCT/JP2012/076629 patent/WO2013058216A1/ja active Application Filing
- 2012-10-15 CN CN201280051390.4A patent/CN103890626A/zh active Pending
- 2012-10-15 KR KR1020147009555A patent/KR101854956B1/ko active IP Right Grant
- 2012-10-15 US US14/351,903 patent/US9638860B2/en active Active
- 2012-10-15 EP EP12842569.1A patent/EP2770354A4/en not_active Withdrawn
- 2012-10-18 TW TW101138482A patent/TWI584009B/zh not_active IP Right Cessation
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02281216A (ja) * | 1989-04-21 | 1990-11-16 | Matsushita Electric Ind Co Ltd | 半導体レーザモジュール |
JPH0538606U (ja) * | 1991-10-23 | 1993-05-25 | 日新電機株式会社 | ボールレンズコリメータ |
JPH05196840A (ja) * | 1992-01-22 | 1993-08-06 | Anritsu Corp | 光ファイバコリメータ |
JPH07120642A (ja) * | 1993-10-21 | 1995-05-12 | Mitsubishi Rayon Co Ltd | 光ファイバ式光電スイッチ用アタッチメント |
JPH10160992A (ja) * | 1996-12-04 | 1998-06-19 | Mitsubishi Cable Ind Ltd | 内視鏡用レンズ固定構造及びレンズ固定方法 |
JP2004004431A (ja) * | 2002-01-10 | 2004-01-08 | Furukawa Electric Co Ltd:The | 光モジュール及びその製造方法 |
JP2004317627A (ja) * | 2003-04-14 | 2004-11-11 | Fujikura Ltd | マウント、光モジュールおよび送受信モジュール |
JP2005077657A (ja) * | 2003-08-29 | 2005-03-24 | Sharp Corp | 光結合器、光結合器モジュール、およびその製造方法 |
JP2007241094A (ja) | 2006-03-10 | 2007-09-20 | Tyco Electronics Amp Kk | 光ファイバコリメータ |
WO2011129229A1 (ja) * | 2010-04-16 | 2011-10-20 | 三菱鉛筆株式会社 | 光コリメータ及びこれを用いた光コネクタ、並びに、光コリメータ用保持部材 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2770354A4 |
Also Published As
Publication number | Publication date |
---|---|
TWI584009B (zh) | 2017-05-21 |
CN103890626A (zh) | 2014-06-25 |
EP2770354A1 (en) | 2014-08-27 |
JP2013088623A (ja) | 2013-05-13 |
EP2770354A4 (en) | 2015-06-03 |
JP5851793B2 (ja) | 2016-02-03 |
KR20140077171A (ko) | 2014-06-23 |
US20140301698A1 (en) | 2014-10-09 |
US9638860B2 (en) | 2017-05-02 |
KR101854956B1 (ko) | 2018-05-04 |
TW201319649A (zh) | 2013-05-16 |
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