• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a single-channel or multichannel connector for collimated optical fibers comprising: a female part body (100) comprising a receiving well comprising a guide sleeve and a lenticular pin comprising an optical fiber contained in a ferrule and maintained in a tubular body guided and fitted in said guide sleeve (130) and axially held therein in free position flush with the front face of the female part, by a spring (170) acting axially on said pin, to facilitate the cleaning of said lens; - A male portion (200) having a lenticular pin comprising an optical fiber contained in a ferrule held in a tubular body, which pin is projecting from the front face of said male portion (200).
    公开号:FR3034876A1
    申请号:FR1553086
    申请日:2015-04-09
    公开日:2016-10-14
    发明作者:Alain Philippe；Sebastien Claudot
    申请人:Souriau SAS；
    IPC主号:
    专利说明:

    [0001] The invention relates to a connector for optical collimated fibers. The invention is intended for the field of devices for the longitudinal connection, according to an end-to-end connection, of two optical fibers, protected in ferrules, or "ferrules", said connection ensuring the continuity of the signal between said fibers.
    [0002] The invention is adaptable to a single-channel connector as to a multi-channel connector. The invention and more particularly adapted embodiment of a contact by an end-to-end junction or "butt joint" between two optical fibers. EP 1 026 527 discloses a fiber-fiber type connector having a sliding sleeve for accessing the end of the fiber 10 in the female portion of the connector for cleaning said end. The connector object of the invention uses a lens at the output of each fiber in order to widen the beam by collimating it, that is to say by creating a ray beam parallel to the axis of the fiber. Compared to a fiber-to-fiber connection, a connection via a collimated contact is more tolerant with respect to the relative axial positioning of the contacts and possible soiling on the ends of said contacts. Nevertheless, such a connection, simply because of the presence of the lenses, has a higher insertion loss than a fiber-to-fiber contact, said insertion loss usually being able to reach 1.5 dB against 0.3 dB in the case of fiber-to-fiber contact. This loss of insertion increases further in case of contamination of the lenses and especially in the presence of a relative positioning defect, lateral or angular optical fibers. The object of the invention is to ensure a minimum insertion loss between two optical fibers connected by collimated contacts and for this purpose concerns an optical fiber connector comprising: a. a so-called female part comprising a body with a front face and a receiving well comprising: ai. a guide sleeve; aii, a so-called female pin having an optical fiber contained in a ferrule held in a tubular body fitted into the guide bushing and terminated at its contact end by a lens; 3034876 2 aiii. a spring applying on said spindle an axial sliding force relative to the receiving well between an axial position, said free, of said spindle where the lens is flush with the front face of the body, and an axial position, said engaged, where the lens is retracted into the guide bushing by a distance equal to or greater than a diameter of the spindle while remaining centered in said guide bushing over a length equal to or greater than a diameter of the spindle; b. a so-called male part comprising a body and a spindle, called a male spindle, comprising an optical fiber contained in a ferrule held in a tubular body of a diameter adjusted to the bore diameter of the guide bushing of the female part and completed at its contact end by a lens; vs. coupling means of the female part with the male part.
    [0003] Thus, the action of the spring on the pin of the female part of the connector, allows to obtain a flush position of the lens to allow easy cleaning thereof. The invention is advantageously implemented according to the embodiments and variants described below, which are to be considered individually or in any technically operative combination. According to an alternative embodiment, the guide sleeve is fixed axially in the body of the female part. This variant protects the guide sleeve against degradation when the connector is open. Thus, according to an advantageous embodiment, the axial end of the guiding bushing is recessed axially with respect to the front face of the female part, and advantageously, the insertion well comprises a chamfer in the body of the bushing. female part in front of the end of the guide sleeve. Said chamfer makes it easier to center the spindle of the male part in the female part when coupling the connector.
    [0004] According to one embodiment, the female pin of the connector object of the invention comprises: d. a cage for holding the guide sleeve.
    [0005] This embodiment makes it possible to make the relative centering of the male spindle and the female spindle independent of the body of the connector. According to a particularly advantageous embodiment, the male part of the connector object of the invention comprises a guide well, and the connector 5 comprises, according to this embodiment: bi. a spring applying on said male pin an axial sliding force relative to the guide well between an axial position, said free, where said pin protrudes relative to the front face of the male part by a distance greater than a diameter of the pin, and a so-called engaged position, where the male portion is connected to the female portion of the connector, the male pin enters the guide sleeve a distance equal to or greater than a diameter of said pin. Thus, the combined action of the two springs ensures optimum relative axial positioning of the two pins when the male and female parts of the connector are assembled, regardless of the relative axial positioning of the two parts. According to an alternative embodiment, the springs acting on the pins of the male and female parts are likewise stiff. This embodiment using essentially the same elements for the male and female parts is more economical. Advantageously, the spring acting on the pin of the male part is of greater stiffness than the spring acting on the pin of the female part. This embodiment, while retaining the advantages of the axially floating contact, makes it possible to ensure that the spindle of the male part penetrates a sufficient guide length into the guide bushing of the female part. Advantageously, the lenses of the pins of the male part and of the female part are recessed axially with respect to the end of said pins. This arrangement protects the lenses from scratching, especially when the pins are in axial contact with the guide sleeve. The slightly protruding part of the end of the spindle with respect to the lens also co-operates with the input chamfer of the female part, when provided, in order to promote the radial centering of the spindle of the male part. in the guide sleeve, this without risk of degrading the surface 3034876 4 of the lens. According to a particular embodiment, the ends of the pins of the male part and the female part are terminated by flat portholes. This embodiment makes it possible to obtain even greater protection for the ends of the pins, more particularly the lenses. The disadvantages of the presence of these portholes on the insertion loss are minimized by the ability to clean the ends of the contacts and the precise relative axial positioning of the two ends. The invention also relates to a multi-channel connector for collimated optical fibers 10 comprising: a female body body comprising a plurality of receiving wells each comprising a guide sleeve and a lenticular pin comprising an optical fiber contained in a ferrule and maintained in a tubular body guided and fitted in said guide bushing and held axially therein in free position flush with the front face of the female part, by a spring acting axially on said spindle; - A male part comprising a body comprising a plurality of guide wells in each of which slides a lenticular pin comprising an optical fiber contained in a ferrule held in a tubular body, which pin is held axially by a spring in free position projecting relative to at the front face of said male part. This multi-channel connector takes advantage of the features of the invention to obtain optimum relative positioning of the male and female contacts. Advantageously, the pins of the male part comprise a clearance radial with respect to the guide well. Thus the radial centering of the male pins relative to the female pins in the guide bushes is achieved without hyperstatism when connecting the two parts. The invention is explained below according to its preferred embodiments, in no way limiting, and with reference to FIGS. 5, in which: FIG. 1 represents, in a longitudinal sectional view, an embodiment of the part said female of a connector object of the invention; FIG. 2 is a view along the same longitudinal section of the so-called male part of a connector which is the subject of the invention and capable of coupling with the female part of FIG. 1, a detail life shows an example of making the end of the spindle; - Figure 3 is a longitudinal sectional view of an assembly of the male and female parts 5 of an embodiment of a connector according to the invention corresponding to Figures 1 and 2; - Figure 4 shows in a schematic longitudinal sectional view another embodiment of the connector object of the invention, Figure 4A, in the open position and Figure 4B in the coupling position; FIG. 5 shows in longitudinal section, an embodiment corresponding to the female pin of the connector according to the block diagram of FIG. 4. FIG. 1, according to an embodiment of the female part (100) of FIG. a single-channel connector, according to the invention, the latter comprises a body (110) comprising a front face (111). Said body is pierced by an insertion well (120) whose entry (121) is chamfered. According to embodiments, said body is made of a molded plastic or comprises an assembly of several parts, according to known production techniques of the prior art. According to this embodiment, a guide sleeve (130) is fixed in the insertion well (120), said guide bush is for example made of a ceramic or steel to ensure its rigidity. The optical fiber (141) is contained in a ceramic ferrule (140), and the assembly is mounted in a body (150) made of ceramic or a metallic material. This set constitutes a pin. The ferrule (140) is centered in the body, and said tubular body (150) is fit without play in the guide bushing (130). The bodywork maintains at its axial end a collimation lens (160) in contact with the combined ends of the optical fiber (141) and the ferrule (140). The lens is sealed with the fiber, the ferrule and the body, for example by gluing. A helical compression spring (170), according to this exemplary embodiment, applies an axial thrust on the bolt by means of a pusher (171) which limits the axial stroke thereof so that in the free state, such as As shown, the end of the lens is flush with the front face (111) of the body and the guide sleeve according to this exemplary embodiment. Thus, the lens (160) is easily accessible in this position to clean the surface. The spring (170) is stopped at its other end on a sealed bushing (190) fixed to the connector body and comprising sealing means (191) permitting axial sliding of the cable containing the optical fiber through said bushing (190). ) waterproof. Finally this half-connector (100) comprises means (195) for coupling with another half-connector. 2, the male part (200) comprises, according to this exemplary embodiment, substantially the same means as the female part and comprises means (295) of coupling complementary to those of the female part, in order to make the connection of the two half-connectors. Unlike the female part, the pin protrudes from the face (211) of the front body (210) of the connector, a length at least equal to the diameter of said pin. The tubular body (250) of the spindle of the male part is fitted without clearance in diameter with respect to the guide bush of the female part. The pin of the male part slides freely in a well (220) for guiding the body (210) of the male part, with which it advantageously has a radial clearance. In a detail view, the collimating lens (260) at the end of the spindle is slightly downwardly axial with respect to the axial end of the body (250). Said lens (260) is thus protected in particular during the introduction of the pin into the insertion well of the female part. According to an embodiment adapted in particular to an implementation of the connector in harsh environments, a lens (261) porthole protects the end of the lens (260) collimation. The same end fittings are possible on the spindle of the female part.
    [0006] 3, when the two parts (100, 200) of the connector are assembled, the pin of the male part enters the insertion well of the female part, pushing the pin of said female part which slides in the socket ( 130). Thus, the two pins are centered relative to each other by said guide sleeve. The springs acting on the pins of the male and female parts maintain axial contact between the ends of the two pins. According to embodiments, the two springs (170, 370) are of equivalent stiffness, or the spring (370) acting on the pin of the male portion (200) is of greater stiffness than that acting on the female part. The combination of the stiffness of the springs is chosen, in particular, to ensure a centering of the two bores in the guide sleeve over a length at least equal to a pin diameter. The radial clearance between the spindle of the male part and the guide well of this male part is adapted to allow the centering of said guide pin without generating hyperstatic stresses relative to other centering or polarization of the assembled connector. Thus, advantageously, the axial end of the male pin comprises a shape, for example a chamfer, adapted to cooperate with the input chamfer of the receiving well of the female part of the connector. Advantageously, the spindle body is made of a harder material than that constituting the chamfered entrance of the insertion shaft of the female part. Keeping the pins of the two parts of the connector in contact with each other and their common centering in a rigid guide bush makes the connection robust against vibrations and small shocks that may occur. 15 on the connector. In addition, the collimation lenses limit the sensitivity of the contacts to the axial differences between the male and female pins. The sealing means, in addition, allow said connection to be resistant to environmental conditions. Thus, the connector object of the invention is particularly suitable for harsh environments such as applications in the field of aeronautics. The same configuration of the male and female pins is used in a multi-way connector, the male-female pin assemblies being parallel to each other, the male pins all on the same male half-connector and the female pins all on the same half-female connector. In order to facilitate the centering of all the pins, the radial clearance of the male pins in their guide well is advantageously greater than in the case of a single-channel connector. Figure 4, in another embodiment, the male pin (402) is axially fixed relative to the body of the male portion, and the guide sleeve (430) is bonded to the female pin (401). 4A, the female pin (401) constituted by the ferrule (441), the tubular body (451) and the lens (461) of the female pin slides in said guide bushing (430), a spring (470) applying on this 3034876 8 together an axial force so that in position, said free, the lens (461) is flush with the axial end of the guide sleeve. 4B, when the male and female parts of the connector according to this embodiment are coupled, the male pin (402) enters the guide sleeve (430), thus concentrating perfectly with respect to the pin (401). ) female, by axially pushing said female pin, compressing the spring (470), the axial action keeps the ends of the two pins in contact. According to an advantageous embodiment (not shown) of this embodiment, the guide bushing is partially slotted longitudinally in order to ensure, by elasticity, a free play centering of the male spindle (402) in said bushing (430). . Thus, since the guide sleeve (430) is connected to the female pin and not to the connector body, this embodiment makes it possible to reduce the mechanical stresses of said sleeve (430) during the insertion maneuvers, thus limiting the drift of the connector. setting thereof and maintaining a perfect centering of the two pins 15 over time. The axial sliding assembly of the female pin inside said guide sleeve and its position flush with the end of said sleeve in free position, ensures protection of the entire surface of the sleeve against dust and shocks, in the connector but also outside the connector, even without plug. Thus, the guide sleeve retains a good radial elasticity and a good surface condition to ensure effective relative centering of the two pins and the conservation over time of the optical performance of the connector object of the invention. 5, according to an exemplary implementation of the previous embodiment, the sleeve (530) for guiding the connector object of the invention is held in a cage (580) which is fixed to the female pin. The tubular body (550) made of a ceramic or metal material is centered on the ferrule (540) of the contact and guided in the guide sleeve (530). Thus, according to this embodiment the alignment guides of the male and female contacts are independent of the body (510) of the connector.
    [0007] The above description and the exemplary embodiments show that the invention achieves the aim of achieving a robust optical fiber connector which is not sensitive to environmental conditions.
    权利要求:
    Claims (12)
    [0001]
    REVENDICATIONS1. Optical fiber connector comprising: a. a so-called female portion (100) having a body (110, 510) with a front face (111) and a receiving well (120) comprising: a. a guide sleeve (130, 430, 530); aii, a pin (401), said female, having an optical fiber (141) contained in a ferrule (140, 441, 540) held in a tubular body (150, 451, 550) fitted into the socket (130, 430, 530) and terminated at its contact end by a lens (160, 461); aiii. a spring (170, 470) applying on said pin an axial sliding force relative to the receiving well (120) between an axial position, said free, of said pin where the lens (160) is flush with the front face (111) of the body, and an axial position, said engaged, wherein the lens (160, 461) is retracted into the guide sleeve (130, 430) a distance equal to or greater than a diameter of the pin while remaining centered in said guide sleeve over a length equal to or greater than a diameter of the spindle; b. a portion (200), said male, comprising a body (210) and a pin (402) said male, comprising an optical fiber contained in a ferrule held in a tubular body (250) of a diameter adjusted to the bore diameter the socket (130, 430) for guiding the female portion (100) and terminated at its contact end by a lens (260); vs. means (195, 295) for coupling the female portion (100) with the male portion (200). 3034 876 10
    [0002]
    2. The connector of claim 1, wherein the guide sleeve (130) is axially fixed in the body of the portion (100) female.
    [0003]
    3. The connector of claim 2, wherein the axial end of the sleeve (130) guide is recessed axially relative to the front face (111) of the portion (100) female.
    [0004]
    The connector of claim 1, wherein the female pin comprises: d. a cage (580) for holding the guide sleeve (530).
    [0005]
    The connector of claim 3, wherein the insertion well (120) comprises a chamfer in the body of the female portion in front of the end of the guide bushing (130).
    [0006]
    6. The connector of claim 1, wherein the body of the male portion (200) comprises a guide well (220), and comprising: bi. a spring (370) applying on said male pin an axial sliding force with respect to the guide well (220) between an axial position, said free, where said pin protrudes with respect to the front face (211) of the part male with a distance greater than a diameter of the spindle, and a so-called engaged position, where the male part (200) is connected to the female part (100) of the connector, the male pin enters the socket (130) of guiding a distance equal to or greater than a diameter of said spindle.
    [0007]
    The connector of claim 6, wherein the springs (170,370) acting on the pins of the male and female portions are of equal stiffness.
    [0008]
    The connector of claim 6, wherein the spring (370) acting on the pin of the male portion (200) is of greater stiffness than the spring (170) acting on the pin of the female portion. 3034876 11
    [0009]
    9. The connector of claim 1, wherein the lens (160, 260) of the pin of the male part or the female part is recessed axially with respect to the end of said pin.
    [0010]
    The connector of claim 1, wherein the end of the pin of the male or female portion is terminated by a flat door (261).
    [0011]
    A multi-channel optical fiber collimated connector comprising: a female body body having a plurality of receiving wells each having a guide bushing and a lenticular pin including an optical fiber contained in a ferrule and held in a guided and adjusted tubular car body. in said guide bushing and axially held therein in free position flush with the front face of the female part, by a spring acting axially on said spindle; a male part comprising a body comprising a plurality of guide wells in each of which slides a lenticular pin comprising an optical fiber contained in a ferrule held in a tubular body, which pin is held axially by a spring in free position projecting from at the front face of said male part.
    [0012]
    12. Multichannel connector according to claim 11, wherein the pins of the male portion comprise a radial clearance relative to the guide well. 25
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    同族专利:
    公开号 | 公开日
    EP3078999A1|2016-10-12|
    US9658405B2|2017-05-23|
    FR3034876B1|2018-04-20|
    EP3078999B1|2018-06-13|
    US20160320566A1|2016-11-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2011014264A1|2009-07-29|2011-02-03|Glenair, Inc.|Expanded beam fiber optic connection system|
    WO2012066127A2|2010-11-18|2012-05-24|Euromicron Werkzeuge Gmbh|Cartridge receptacle and method for producing the cartridge receptacle|
    US20130044978A1|2011-08-20|2013-02-21|Peter DeDobbelaere|Method And System For A Multi-Core Fiber Connector|
    FR2789183B1|1999-02-03|2001-04-13|Framatome Connectors France|EASY CLEANING OPTICAL CONNECTOR SYSTEM|
    US7298942B2|2003-06-06|2007-11-20|Finisar Corporation|Pluggable optical optic system having a lens fiber stop|
    EP1884809B1|2006-07-31|2018-02-14|TE Connectivity Corporation|Expanded beam connector|JP6392372B2|2014-11-26|2018-09-19|オリンパス株式会社|Optical fiber connection mechanism and optical fiber connection method|
    CN109143480B|2017-06-28|2021-03-23|中航光电科技股份有限公司|Optical fiber connector and plug and socket thereof|
    US10904032B2|2018-05-15|2021-01-26|The Boeing Company|Multi-use optical data, powerline data, and ground power interface for an airplane|
    TWM574365U|2018-12-05|2019-02-11|中華電信股份有限公司|Optical duplexer and optical transceiving system|
    法律状态:
    2016-05-02| PLFP| Fee payment|Year of fee payment: 2 |
    2016-10-14| PLSC| Search report ready|Effective date: 20161014 |
    2017-05-02| PLFP| Fee payment|Year of fee payment: 3 |
    2018-05-02| PLFP| Fee payment|Year of fee payment: 4 |
    2020-01-10| ST| Notification of lapse|Effective date: 20191206 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1553086A|FR3034876B1|2015-04-09|2015-04-09|CONNECTOR FOR COLLIMATE OPTICAL FIBERS|
    FR1553086|2015-04-09|FR1553086A| FR3034876B1|2015-04-09|2015-04-09|CONNECTOR FOR COLLIMATE OPTICAL FIBERS|
    US15/090,415| US9658405B2|2015-04-09|2016-04-04|Connector for collimated optical fiber|
    EP16164747.4A| EP3078999B1|2015-04-09|2016-04-11|Connector for collimated optical fibres|
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