Fiber End Held In Ferrule Patents (Class 385/78)
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Patent number: 7313300Abstract: A coaxial optical component and method of packaging and manufacturing a coaxial optical component. A dual fiber collimator is formed from a dual fiber pigtail and a collimating lens. The dual fiber pigtail and the collimating lens are adequately aligned such that the optical loss is minimized. Spacers are placed around the dual fiber collimator and epoxy is placed between the spacers and around the dual fiber collimator. The dual fiber collimator and the spacers are inserted in one end of a metal housing and aligned before the epoxy is cured. The spacers thus position the dual fiber collimator within the housing while separating the dual fiber collimator from the housing. The metal housing includes an extended portion adapted to receive another optical element for use with the dual fiber pigtail. Alternatively, the dual fiber collimator is replaced with a different optical element and secured within the metal housing.Type: GrantFiled: October 30, 2003Date of Patent: December 25, 2007Assignee: Finisar CorporationInventors: David Pin, Johnny Zhong, Steve Wang, Yin Zhang, Lewis Leung
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Patent number: 7309168Abstract: An optical fiber cable, comprising a cable main unit with an optical fiber covered by a sheath and terminal units mounted on end portions of the cable main unit, wherein each of the terminal units has a transparent cover member with a refractive index approximately equal to the optical fiber, the cover member of at least one of the terminal units and the optical fiber are welded under such condition that the cover member is brought closer to or into contact with the optical fiber, and the cover member and the optical fiber are integrated with each other.Type: GrantFiled: December 7, 2006Date of Patent: December 18, 2007Assignee: Kabushiki Kaisha TOPCONInventors: Masayuki Momiuchi, Shinya Ikoma, Shigenori Nagano, Akira Takada
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Patent number: 7309167Abstract: A ferrule and method are presented that fuses optical fibers, capillaries and the like to ferrules while reducing deformation of the fused component and the ferrule and minimizing stresses within the assembly. Reduced deformation and stress is accomplished by providing high contact angles in a symmetrical, short section of fusion in fusing the component carried by the ferrule to the ferrule. It is particularly applicable to hermetic terminations of polymer clad fiber optics where irregular glass fusion joints cause irregular light leakage at the fiber launch but benefits are significant when used for other fiber and capillary architectures as well.Type: GrantFiled: February 22, 2005Date of Patent: December 18, 2007Assignee: Innovaquartz Inc.Inventor: Griffin Stephen
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Patent number: 7306376Abstract: A monolithic ferrule/endcap/optical fiber structure is provided wherein an optical fiber is terminated in a ferrule and bonded by fusion to form a monolithic unit which minimizes optical loss and is typically capable of transmitting high power laser radiation, preferably on the order of 500 W and higher, without damage to the optical fiber and ferrule. Ferrule, endcap, optical fiber and fusible powder are composed of material of substantially the same physical characteristics such that, when all are fused together, the structure so formed is monolithic and the optical path is transparent.Type: GrantFiled: January 23, 2006Date of Patent: December 11, 2007Assignee: Electro-Optics Technology, Inc.Inventors: David Gerald Scerbak, Gordon Edgar Gottfried, Eric Sean Pooler, Evan Matthew Rogers
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Patent number: 7305163Abstract: Fiber optic phototherapy devices include fiber optic light emitters having fiber optic end portions at one or both ends that may be separated into a plurality of groups of end portions that receive light from one or more light emitting diodes (LEDs). The fiber optic end portions of different segments of the light emitters may also be grouped together in different groups and lighted by different LEDs for selectively lighting any or all of the segments of the light emitters at the same or different types as desired. Lenses may be used to focus the light from one or more LEDs onto the end portions of each group. The LEDs may be mounted to a heat sink to dissipate any excess heat generated by the LEDs.Type: GrantFiled: August 17, 2004Date of Patent: December 4, 2007Assignee: Lumitex, Inc.Inventor: Jeffrey B. Williams
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Overmolded multi-port optical connection terminal having means for accommodating excess fiber length
Patent number: 7302152Abstract: An overmolded multi-port optical connection terminal for a fiber optic distribution cable includes a tether cable containing a plurality of optical fibers optically connected to a corresponding plurality of optical fibers terminated from the fiber optic distribution cable at a first end of the tether cable, an overmolded housing a the second end of the tether cable, at least one connector port, and plenum means for accommodating excess fiber length (EFL) caused by shrinkage of the tether cable and/or pistoning of the optical fibers of the tether cable during connector mating. In one embodiment, a centralized plenum means is defined by an internal cavity within the overmolded housing sufficient for accommodating the EFL without micro bending. In another embodiment, a distributed plenum means is defined by an oversized tubular portion of the tether cable having an inner diameter sufficient for accommodating the EFL without micro bending.Type: GrantFiled: December 30, 2004Date of Patent: November 27, 2007Assignee: Corning Cable Systems LLCInventors: James P. Luther, Robert B. Elkins, II, Lars K. Nielsen -
Patent number: 7296938Abstract: An optical to RF interface connector has a cellular housing that has a back most portion configured for press fitting into a hole of the housing of an electro-optical apparatus, with the hole and back most portion of the shell being key to one another to insure proper orientation of the connector. The press fitting is further configured for providing both an RF seal, and moisture seal. The frontmost portion of the connector shell is configured for securely coupling to an optical interface male connector that is attached to an end of a fiber optic cable. The innermost portion of a connector shell is further configured for receiving and retaining therein either a auto detector or light detecting device for converting optical signals received from the fiber optic cable into electrical signals for processing, or is light transmitting device for converting electrical signals into optical signals for transmission over the associated fiber optic cable.Type: GrantFiled: May 25, 2006Date of Patent: November 20, 2007Assignee: Extreme Broadband Engineering, LLCInventors: Jay F. Shapson, Robert L. Romerein
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Patent number: 7296935Abstract: An adapter for holding a multi-fiber ferrule in position to mate with a fiber optic connector includes an adapter body having a first side and a second side, with a first opening disposed in the first side that is configured to receive the multi-fiber ferrule. A second opening is disposed in the second side of the adapter end is configured to receive a fiber optic connector. An engagement member, which preferably rotates about an axis transverse to the opening, is disposed adjacent the first opening to engage and hold the multi-fiber ferrule in the adapter.Type: GrantFiled: February 9, 2007Date of Patent: November 20, 2007Assignee: US Conec, Ltd.Inventors: Darrell R Childers, Russell J. Granger, Joseph P Howard, Myron W Yount
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Patent number: 7298946Abstract: One embodiment disclosed relates to a manufactured multi-fiber cable for optical systems. The multi-fiber cable is manufactured to include a plurality of individual fiber cables, each individual fiber cable including a single optical fiber surrounded by a protective covering. There is a main cable hose around the individual fiber cables, and there is a connector on each end of each individual fiber cable. The individual fiber cables in the multi-fiber cable are preconfigured to be visually distinct from each other. Other embodiments are also disclosed.Type: GrantFiled: December 22, 2004Date of Patent: November 20, 2007Assignee: Hewlett-Packard Development Company, L.P.Inventor: Juergen Mueller
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Patent number: 7290941Abstract: An optical fiber interconnection system with a small number of modular components that can be configured for simple construction in many configurations. The system includes connector housings. Optical fibers are installed into the housings on ferrule carriers. The housings are brought together in adapters. Different styles of adapters are available for different applications, such as panel or backplane configurations. However, the same housing and ferrule carriers can be used in any style of adapter. Also, different ferrule carriers are provided for single fiber ferrules and multi-fiber ferrules. Either style of ferrule carrier can be used in a housing and adapter. A ferrule carrier for single fiber ferrules can be modified to provide fine alignment features with the addition of a cap, allowing the same style ferrule carrier to be used in both halves of a mated connector assembly.Type: GrantFiled: December 23, 2003Date of Patent: November 6, 2007Assignee: Amphenol CorporationInventors: Sepehr Kiani, Richard F. Roth
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Patent number: 7284915Abstract: A subassembly apparatus includes a substantially shieldable interior chamber for housing at least one source of electromagnetic radiation, a connector plane external to the interior chamber for locating an end surface of a connector, and a launch window for locating an end surface of a waveguide, where the launch window is in or adjacent the connector plane. The apparatus also includes an internal propagation path extending from the interior chamber to the launch plane including a barrier of electrically conductive material disposed in the propagation path, the barrier being arranged to shield a planar region from electromagnetic radiation emitted from within the interior chamber, the planar region including substantially the connector plane substantially excluding the launch window.Type: GrantFiled: August 27, 2004Date of Patent: October 23, 2007Assignee: Avago Technologies Fiber IP (Singapore) Pte. Ltd.Inventors: David Healy, Keith Everett, Mark Jeffrey Dunn
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Patent number: 7283718Abstract: The invention relates to an optical connector for connecting optical fibers. Said connector comprises a housing which is provided with a first opening for an optical cable comprising an optical fiber to be connected, and a second opening, through which the end of the optical fiber outwardly protrudes from the housing. The second opening can be closed by a lid which can be pivoted between a first position in which it closes the second opening, and a second position in which it frees the second opening. Spring elements are provided for prestressing the lid in the closing direction. The aim of the invention is to simplify the structure and especially the assembly of one such connector. To this end, the spring elements comprise a laminated spring.Type: GrantFiled: February 18, 2003Date of Patent: October 16, 2007Assignee: Huber+Suhner AGInventors: Patrick Zaina, Urs Frischknecht
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Patent number: 7281859Abstract: A method for assembling an optical fiber connector comprising providing a one piece housing comprising a tailpiece and a body defining a forward first end, a rearward second end and a passage extending longitudinally therebetween, inserting a spring element into the passage through the forward first end, inserting a subassembly comprising a ferrule, a ferrule holder and a lead-in tube into the passage through the forward first end, maintaining the spring within the passage between a shoulder defined by the one piece housing and a flange of the ferrule holder, and inserting a subassembly retainer into the passage through the forward first end.Type: GrantFiled: December 20, 2006Date of Patent: October 16, 2007Assignee: Corning Cable Systems LLCInventors: Ronald L. Mudd, Derek N. Johnson
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Patent number: 7278790Abstract: Exemplary embodiments include an improved connector for a fiber-optic cable including: a fiber-optic conductor disposed in a center portion of the fiber-optic connector; one or more flexible end portions disposed on an outer portion of the fiber-optic connector; a swab disposed on an inner surface of at least one flexible end portion; wherein the swab contacts and cleans the fiber-optic conductor when the improved connector is attached to a receptacle.Type: GrantFiled: March 20, 2006Date of Patent: October 9, 2007Assignee: International Business Machines CorporationInventor: Eric L. Kobrin
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Patent number: 7273320Abstract: A cleaning tool for cleaning particulate matter from contact surfaces of fiber-optics ferrules of an electronics assembly has one or more first connector halves for engaging one or more second connector halves hosting the ferrules to be cleaned, and one or more cleaning inserts provided within the one or more first connector halves, the cleaning inserts comprising adherent surfaces for removing particulates from engaged surfaces. The tool is characterized in that the one or more cleaning inserts are sized to contact the contact surfaces of the fiber optics ferrules with the first connector half engaged in the second connector half.Type: GrantFiled: April 23, 2002Date of Patent: September 25, 2007Assignee: Pluris, Inc.Inventors: Francis Clay Ellis, Sam Novinsky
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Patent number: 7270487Abstract: A field installable optical fiber connector is provided, the connector including an inner housing defining an interior passageway extending longitudinally between a forward end and a rearward end, a first connector subassembly inserted through the rearward end of the inner housing into the interior passageway thereof. In one embodiment, the first connector subassembly includes a ferrule holder having a ferrule disposed within the ferrule holder, and an optical fiber stub disposed within the ferrule. In another embodiment, the first connector subassembly also includes a flange disposed at a first end of the ferrule holder, a spring element and a spring element retainer slidably mounted on the ferrule holder, and a collar mounted on a second end of the ferrule holder so as to capture the spring and the spring element retainer between the flange and the collar.Type: GrantFiled: April 30, 2004Date of Patent: September 18, 2007Assignee: Corning Cable Systems LLCInventors: Bradley S. Billman, Scott E. Semmler
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Patent number: 7264403Abstract: An optical ferrule is provided with a ferrule body having a front face and at least one covering applied to the front face to protect the front face of the ferrule from a laser beam used during a trimming process. The optical ferrule may also have a second covering disposed between the front face of the ferrule and the first covering to assist in adhering the first covering to the optical ferrule. A method is also provided for applying the first covering or the first covering and the second covering to the front face of the ferrule. A method is also provided for trimming, and in particular, ablating portions of one or more optical fibers that protrude beyond the front face of the ferrule.Type: GrantFiled: May 2, 2006Date of Patent: September 4, 2007Assignee: Corning Cable Systems LLCInventors: Jeffrey D. Danley, Paul A. Sachenlk, Robert S. Wagner
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Publication number: 20070196055Abstract: An optical connector having: a ferrule into which a first optical fiber is inserted; an optical fiber connector disposed at an back end of the ferrule; and a cross-linkable refractive index matching member attached onto an end face on a back end side of the first optical fiber. The end face on the back end side of the first optical fiber and an end face of a second optical fiber to be inserted into the optical fiber connector from a back end side thereof are to be connected by a butting connection. The cross-linkable refractive index matching member is formed such that a cross-linkable refractive index matching agent is coated on the end face on the back end side of the first optical fiber, and the coated agent is cross-linked and hardened.Type: ApplicationFiled: December 13, 2006Publication date: August 23, 2007Inventors: Yoshihisa Kato, Kanako Suzuki, Noribumi Shiina, Tomoyuki Nisio, Kazumasa Ohsono, Yoshikazu Namekawa, Yoshihiro Nakatani
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Patent number: 7255497Abstract: A small-sized uni-directional optical power monitor with an excellent directional characteristic is disclosed. The monitor comprises: a GRIN lens having a tap film for transmitting and reflecting an optical signal from an input and an output optical fiber with a predetermined ratio; and a photodiode having a lens for detecting and measuring part of the optical signal that has transmitted through the tap film. The tap film of the GRIN lens is connected to the photodiode by an opaque black sleeve having two continuous circular holes serving as an internal optical path between them. The two circular holes are parallel to each other, their center axes are shifted from each other, and the two circular holes communicate each other through a through-hole at the sleeve intermediate position. The portion of the optical signal coming from one of the optical fibers and transmitting through the tap film passes through the two circular holes and the through-hole and is detected by the photodiode.Type: GrantFiled: May 24, 2005Date of Patent: August 14, 2007Assignee: Hitachi Metals, Ltd.Inventors: Masaru Suzuki, Takeshi Satoh, Nobuhiro Ueno
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Publication number: 20070183722Abstract: An optical connectorcomprises an optical cable; and a ferrule that is attached to an end of the optical cable and performs optical connection; a cover that defines a through hole that the optical cable passes through, the cover covering the ferrule without contacting the ferrule; and a removal-preventing section that is disposed inside a wall that the through hole of the cover is formed on, and the removal-preventing section preventing a pulling force applied to the optical cable from being transferred to the ferrule.Type: ApplicationFiled: September 26, 2006Publication date: August 9, 2007Inventors: Yoshihisa Ueda, Toshimichi Iwamori
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Patent number: 7246950Abstract: Fiberoptic connector and adapter assembly includes a fiberoptic connector received within an adapter. The connector has a cover on the connector housing. The cover pivots between open and closed positions to expose or cover, respectively, a optical fiber contained within the connector. Longitudinal guides of the connector are received cooperating with longitudinal guides of the adapter to direct the connector into the adapter in a prescribed alignment. A cam pin is carried on the adapter to engage a cam pin receiving slot on the cover to urge the cover to the open position as the connector is inserted into the adapter.Type: GrantFiled: October 5, 2006Date of Patent: July 24, 2007Assignee: ADC Telecommunications, Inc.Inventor: Liang-Ju Lu
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Patent number: 7242835Abstract: This invention pertains to fiber termination combination which includes an optical fiber having a fiber core for transmitting a highly energetic optical signal that can damage the fiber and a structured region around the core for directing the optical signal into the core, the structured region being characterized by multiple channels of smaller internal diameter than the core defined by thin walls disposed around said core; a ferrule, with an opening therein for locating said fiber, at the end of said fiber enveloping said fiber extremity which cooperates with said blocking structure to block the optical signal from impinging on said microstructured region of said fiber; and a blocking structure disposed over the end of said fiber with an opening mating with said fiber core, said blocking structure blocking the optical signal from impinging on said microstructured region of said fiber.Type: GrantFiled: July 18, 2005Date of Patent: July 10, 2007Assignee: The United States of America as represented by the Secretary of the NavyInventors: Lynda Busse, Frederic H. Kung, Jasbinder Sanghera, Ishwar Aggarwal
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Patent number: 7241056Abstract: A re-terminable, no-crimp ST-type optical connector assembly includes a spring-loaded ferrule holder assembly and a reusable activation system for termination of the assembly. The optical connector can be terminated by a suitable cam activation tool. The connector includes a housing, such as a bayonet, matable to a mating adapter, a backbone retained within a rear of the housing, a ferrule holder provided within the backbone, and a cam provided between the ferrule holder and the backbone. The ferrule holder includes an alignment key exposed to mate with a cam activation tool to lock rotation of the ferrule holder relative to other connector components. The cam includes a cam activation cutout at a front face thereof that mates with a cam activation tool interface to enable rotation of the cam between de-activated and activated positions, the cam activation cutout also receiving the alignment key of the ferrule holder therethrough.Type: GrantFiled: June 13, 2006Date of Patent: July 10, 2007Assignee: Panduit Corp.Inventors: Gregory L. Kuffel, Samuel M. Marrs, Shaun P. Brouwer, Robert T. Fitzpatrick, Phillip J. Irwin, Matthew M. Wagner
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Patent number: 7237966Abstract: According to certain aspects of the present invention, an optical cable assembly is disclosed having a plurality of optical fibers, each having a first end and a second end. The plurality of optical fibers includes a first group of optical fibers and a second group of optical fibers. A first connector head is attached to the first end of the first group of optical fibers. The first group of optical fibers terminates in an array at a surface disposed on the first connector head. The first connector head includes a first mating structure. A second connector head is attached to the first end of the second group of optical fibers. The second group of optical fibers terminates in an array at a surface disposed on the second connector head.Type: GrantFiled: August 9, 2004Date of Patent: July 3, 2007Assignee: Corning Cable Systems LLCInventors: Eric S. Quinby, Eric J. Leichter
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Publication number: 20070147742Abstract: An optical fiber cable, comprising a cable main unit with an optical fiber covered by a sheath and terminal units mounted on end portions of the cable main unit, wherein each of the terminal units has a transparent cover member with a refractive index approximately equal to the optical fiber, the cover member of at least one of the terminal units and the optical fiber are welded under such condition that the cover member is brought closer to or into contact with the optical fiber, and the cover member and the optical fiber are integrated with each other.Type: ApplicationFiled: December 7, 2006Publication date: June 28, 2007Inventors: Masayuki Momiuchi, Shinya Ikoma, Shigenori Nagano, Akira Takada
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Patent number: 7234879Abstract: The invention relates to an optical duplex connector which has two optical waveguides, a connector housing, in which the optical waveguides are arranged with a defined lateral spacing in relation to each other, and a triggering mechanism for locking and/or unlocking the optical connector with respect to a coupling partner. The triggering mechanism comprises at least one interacting part, which interacts with at least one corresponding part of the coupling partner for locking and/or unlocking. In this case, the at least one interacting part is arranged, with respect to the plugging direction, in the lateral region between the two optical waveguides or extends along this lateral region. This leads to a particularly compact connector structure.Type: GrantFiled: September 17, 2004Date of Patent: June 26, 2007Assignee: Finisar CorporationInventor: Karl Schrödinger
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Patent number: 7232261Abstract: An optical ferrule is disclosed in which a concave portion 17c having a gate G in resin molding disposed therein is formed in a ferrule body 11. According to this constitution, it is possible to easily cut a flash 10 left after a gate of the concave portion 17c of the ferrule body 11 is cut after molding with a gate cutter, so that, when the ferrule body 11 is fitted in a housing of an MPO connector and the like, the problem that the flash 10 protrudes from the concave portion 17c and the flash 10 hitching to an inner wall of the housing dose not occur. Accordingly, the labor required for removing the flash 10 by polishing can be eliminated, and hence productivity of the ferrule body 11 can be improved. Thus, a large number of ferrule bodies 11 can be automatically manufactured without requiring much manpower.Type: GrantFiled: April 20, 2000Date of Patent: June 19, 2007Assignee: Fujikura Ltd.Inventors: Akito Nishumura, Toru Arikawa, Yasuhiro Tamaki
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Patent number: 7232260Abstract: A ferrule holder and a coil spring are provided in a main body formed in an approximately tube shape. A cable adaptor including a front opening part at a large diameter part is inserted from a back opening part into the main body having slits and. A first small diameter part of the main body fits with the large diameter part of the cable adaptor and prevents the cable adaptor from translating in the z-axis direction. And the second small diameter part of the main body controls transfer of the ferrule holder in the z-axis direction. At the forward part of the large diameter, a taper part which helps to insert the cable adaptor is formed around the circuit of the optical axis. Each slit formed at the back opening part also helps to insert the cable adaptor.Type: GrantFiled: April 14, 2005Date of Patent: June 19, 2007Assignee: Canare Electric Co., Ltd.Inventors: Tetsuo Takahashi, Manabu Komatsubara
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Patent number: 7226215Abstract: The invention relates to an optical fiber connector comprising a ferrule disposed in a connector body and receiving the optical fiber in a longitudinal bore, said ferrule being subjected to a compression spring disposed on a part extending the ferrule, referred to as a “counter-ferrule”, and pressed by a closure part secured to said connector body. According to the invention, the ferrule and the counter-ferrule are constituted by two separate parts, and an optical fiber holder element is inserted between these two separate parts, said holder element being capable of being caused to hold the optical fiber from outside the connector, and said holder element is also capable of being released from outside the connector.Type: GrantFiled: July 25, 2005Date of Patent: June 5, 2007Assignee: NexansInventors: Baudouin Bareel, Peter D'hondt
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Patent number: 7221836Abstract: In an endoscopic system there is a source of radiation and a waveguide, which is symmetric about an axis and receptive of the radiation for guiding the radiation therealong. A coupling mechanism engages or disengages the waveguide to or from an endoscope. An attenuator is deployable in a first position when the waveguide is engaged to the endoscope and deployable in a second position when the waveguide is disengaged from the endoscope. When the attenuator is deployed in the first position, the radiation passes from the waveguide to the endoscope and when the attenuator is in the second position, the radiation is at least partially blocked from passing from the waveguide to the endoscope or from exiting the fiber optic cable.Type: GrantFiled: August 12, 2003Date of Patent: May 22, 2007Assignee: Karl Storz Endovision, Inc.Inventor: Guy E. Horne, Jr.
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Patent number: 7207729Abstract: The present invention relates to a TO-can type encapsulating element for enclosing, either hermetically or non-hermetically, optical-electrical chips with integrated optical element interfaces, detachable fibres and leadframes. The TO-can/encapsulating element enables the optical fibre (9) to be readily positioned relative to the chip (25) with the aid of a fix-able can-flange (7), and eliminates the risk of crack formation by virtue of the component leads of said TO-can having been provided with and connected to a leadframe (6).Type: GrantFiled: March 22, 2002Date of Patent: April 24, 2007Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Claes Blom, Nivardo Davila Albornoz
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Patent number: 7204644Abstract: A field installable fiber optic connector includes a housing and a ferrule holder inserted from the rearward end of the housing. A spring element inserted into the front of the housing and a spring element retainer attached to the ferrule holder bias the ferrule holder forward. An optical fiber stub is disposed between opposed splice members and a field fiber is inserted between the splice members and guided by a groove into abutment with the end of the optical fiber stub. A cam disposed about the ferrule holder is movable to facilitate insertion of the field fiber and to clamp the field fiber and the optical fiber stub between the splice members. In one embodiment, a trigger is coupled to the housing. The trigger is disposed about and slides relative to the ferrule holder, thereby biasing the housing forward relative to the ferrule holder to aid in latching the connector.Type: GrantFiled: November 10, 2004Date of Patent: April 17, 2007Assignee: Corning Cable Systems LLCInventors: Brandon A. Barnes, Brad S. Billman, David W. Meek, Scott E. Semmler, Jason F. Forsberg
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Patent number: 7195400Abstract: An optical connector ferrule has an optical fiber containing hole reaching from the rear end surface near the end surface and a fine pore extending from the optical fiber accommodating hole to the end surface to be connected. A bare fiber of a polarization-maintaining optical fiber is inserted into the fine pore. Since the length of the fine pore is short, the influence of the uniformness of the adhesive in the fine pore is smaller, and therefore the stress distribution is maintained, resulting in stabilizing the polarization characteristics. A flange unit is attached to the ferrule after an optical fiber is inserted to the ferrule and fixed. Therefore the optical fiber is easily adjusted with respect to the housing in the circumferential direction around the axis, and optical fibers are connected by but joining with high accuracy.Type: GrantFiled: May 17, 2005Date of Patent: March 27, 2007Assignee: Fujikura Ltd.Inventors: Mariko Asano, Koki Narita, Yoshihiro Ouchi, Yasuhiro Tamaki, Yoshikazu Nomura, Hideyuki Hosoya
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Patent number: 7192194Abstract: There is provided an adapter that fits most standardized fiber optic cable connectors to allow quick field installations. The adapter includes a split diameter. The smaller diameter fits within a rear back shell of the connector and receives a fiber stub from the connector. The larger diameter abuts the rear of the rear back shell and receives an optical fiber. The adapter includes a pair of mated resilient members that forms a fiber guide within the adapter. The fiber stub and a bare optical fiber of the optical fiber are optically spliced within the fiber guide formed within the resilient members.Type: GrantFiled: January 13, 2005Date of Patent: March 20, 2007Inventors: Frank Giotto, Raymond Joseph Wertz, Benjamin Lee Sitler, Arthur James Hoffman, III
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Patent number: 7191993Abstract: A lighting apparatus for installation through a hole in a ceiling is disclosed. The lighting apparatus has a housing, a frame designed to rest on the upper surface of the ceiling and at least one retention cable secured to the frame that passes through the opening in the frame and the hole in the ceiling to temporarily retain the frame against the upper surface of the ceiling while sliding the lamp housing through the ceiling and the opening in the frame. A method for installing a lighting fixture is also disclosed.Type: GrantFiled: December 29, 2004Date of Patent: March 20, 2007Assignee: Juno Manufacturing, Inc.Inventor: Christopher T. Bobrowski
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Patent number: 7189007Abstract: A terminal element for fiber optic communication has an elongated body defining a body axis and having a first end from which an optical fiber extends along the body axis. The body has a second end with an angled surface offset at an angle from the body axis. The fiber extends through the length of the body, and terminates at a fiber end surface flush with the angled surface. A lens element is positioned adjacent to the angled surface. The fiber may be hermetically sealed to the body at a position away from first end, and may be sealed with a flexible material at the first end.Type: GrantFiled: February 9, 2005Date of Patent: March 13, 2007Assignee: Tektronix, Inc.Inventors: Talapker Imanbayev, Ralph Ebbutt
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Patent number: 7189008Abstract: A high-performance connector for optical fibers includes a cylindrical ceramic or metallic ferrule installed in a structure. This structure is positioned in a non-plastic (metallic system) base member to form a fiber holder. This overall generally cylindrical structure includes a small passageway along its central axis for holding an optical fiber. This entire structure is mounted within the non-plastic housing that includes an opening at one end thereof from which the ceramic ferrule protrudes. A cylindrical spring that is integral to the ferrule support structure and interacts with an interior surface of the surrounding structure via a secondary piece of the cylindrical structure urges the ceramic ferrule outward from the opening in the housing. The housing includes a metallic leaf-spring latch which is located on a single surface thereof, which is manually operable and used to lock the connector to an associated receptacle.Type: GrantFiled: December 20, 2005Date of Patent: March 13, 2007Assignee: Molex IncorporatedInventor: David E. Dye
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Patent number: 7186034Abstract: An optical fiber connector (1) includes a housing (10), an insulated body (20), an optical element (30) received in the housing, and a spacer (40) for securing the optical element in the housing. The housing defines a front and a rear receiving spaces (11, 12). The front receiving space is for receiving the insulated body and an optical plug (60), and the rear receiving space is for receiving the optical element. A partition wall (13) is formed between the front and the rear receiving spaces and defines an aperture (14) thereon. The aperture forms a tapered face (15) at a rear portion thereof for preventing the optical fiber plug from inserting into the optical fiber connector.Type: GrantFiled: November 1, 2004Date of Patent: March 6, 2007Assignee: Hon Hai Precision Ind. Co., Ltd.Inventors: Lun Song Hu, Yong Du
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Patent number: 7187826Abstract: Optical package and module designs use multiple-port (e.g. six-port) optical packages to create compact DWDM modules, add/drop packages, heat dissipation packages, optical amplifier filters, and the like.Type: GrantFiled: July 2, 2004Date of Patent: March 6, 2007Assignee: Avanex CorporationInventors: Marc G. Brun, Scott M. Hellman, Heinrich G. Muller, Paul A. Townley-Smith, Michael Ushinsky
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Patent number: 7186038Abstract: A fiber optic connector assembly with a fiber optic connector mounted to a fiber optic cable and including a ferrule with an end face terminating the fiber. A plug is configured to fit about and engage the ferrule of the fiber optic connector to seal the end face from contaminants. An adhesive tape is releasably attached to the connector about the plug, holding the plug to the connector. Further, a cover assembly for a fiber optic connector mounted to an end of and terminating a fiber optic cable. The cover includes an open sided box and a lid sized to engage the open side. The box and the lid define a cavity sized to fit about and receive a fiber optic connector. The cavity has an open end adapted to receive the optical fiber cable. The fiber optic connector is held within the cavity and the cable extends through the open end, with the lid engaging the open side and sealing the cavity from contaminants outside the cavity.Type: GrantFiled: December 29, 2003Date of Patent: March 6, 2007Assignee: ADC Telecommunications, Inc.Inventors: Jeffrey S. Hovland, Marlon E. Holmquist, William Pomroy, David J. Anderson
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Patent number: 7186035Abstract: An optical fibre connector includes a connector having a receptacle or socket with a recessed optical fibre ferrule assembly for aligning an optical fibre within the connector. An optical socket has recessed therein a sleeve for receiving and bringing into optical alignment an optical fibre ferrule assembly at an internal end of the socket with a similar optical fibre ferrule assembly of an optical plug connected to the optical socket. The optical connector has a housing with at least two portions that are removably secured to one another. A method of cleaning such a recessed assembley includes removing at least one of said portions from the remainder of the housing. Contamination is then cleaned from the optical fibre ferrule assembly. Then, the the removed portion(s) are reassembled with the remainder of the housing.Type: GrantFiled: May 12, 2004Date of Patent: March 6, 2007Assignee: Avago Technologies Fiber IP (Singapore) Pte. Ltd.Inventors: Mark Jeffrey Dunn, Nicholas Turner
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Patent number: 7182524Abstract: The invention relates to an adapter of the type where a coupling for glass fiber plug-in connectors is inserted from the front into a front plate and is locked by a spring. The inventive adapter comprises a one-piece or two-piece housing which comprises at least on one side a flange projecting from the cross-section of the housing against which the front plate rests, at least one plug-in connector recess which is disposed on the front end and/or rear end with respect to the front plate, and at least one form-fit detachable locking device for the plug-in connector. Every plug-in connector recess comprises an opening for alternately receiving at least two of three different plug-in connector types LX.5, LC and MU of and one respective locking device suitable for the respective type. The adapter can be configured as a simplex plug-in coupling for alternately receiving all three types, or as a duplex plug-in connector for alternately receiving the plug types LX.5 and LC.Type: GrantFiled: July 27, 2002Date of Patent: February 27, 2007Assignee: ADC GmbHInventors: Anne Kramer, Jörg Adomeit
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Patent number: 7178988Abstract: An optical connector plug adapted to be freely and readily attached to or detached from either an SC or an FC connector adapter comprising a housing that couples to the adapter and attaches the plug to the adapter, a plug frame disposed within the housing, which plug frame supports a ferrule secured to one end of an optical fiber and a flange secured around the outside of the ferrule such that the ferrule and the flange can rotate around the axial center of the ferrule, and a plug holder, disposed inside the housing, for positioning the ferrule in relation to the housing by non-incrementally rotating the ferrule to any determinable angle in relation thereto, the plug holder having a coupling part that couples to a groove formed in the flange and is capable of rotating in relation to the plug frame around the center axis of the ferrule.Type: GrantFiled: July 15, 2004Date of Patent: February 20, 2007Assignee: Seikoh Giken Co., Ltd.Inventor: Atsuhiro Terakura
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Patent number: 7178989Abstract: The present invention provides an optical receptacle having a superior insertion/extraction performance of the ferrule, and an optical sub-assembly applying the optical receptacle. The optical receptacle 1 includes a stub, a bush 4, a sleeve, and a sleeve cover. The stub having a lower portion covered by the bush, and an upper portion covered by the sleeve. The sleeve may be a rigid sleeve without any slit along the optical axis in its outer surface. The sleeve cover covers the sleeve and the bush. In the present optical receptacle, the bush is press-fitted into the gap formed between the stub and the sleeve cover. Accordingly, in addition to the application of the rigid sleeve, not only the sub is hard to slide out from the sleeve, but also the insertion/extraction performance of the ferrule to be inserted into the sleeve may be enhanced.Type: GrantFiled: June 14, 2004Date of Patent: February 20, 2007Assignee: Sumitomo Electric Industrics, Ltd.Inventors: Kazunori Yoshida, Hiromi Nakanishi, Yoshiki Kuhara
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Patent number: 7168861Abstract: A optical fiber connector cord capable of being detachably attached to a receptacle fixed to an optical apparatus includes an optical fiber having at least one hole which extends along an optical axis, a plug having a fiber hole through which the optical fiber extends and which is capable of being fitted into the receptacle, a first sealing member which is provided on an outer peripheral surface of the plug and which seals a gap between the plug and the receptacle along the outer periphery of the plug, and a second sealing member which seals a gap between an inner surface of the plug's fiber hole and the optical fiber along the outer periphery of the optical fiber, so that holes in the optical fiber are effectively prevented from communicating with the atmosphere. In addition, an optical coupling set includes the optical fiber connector cord and the receptacle.Type: GrantFiled: March 15, 2005Date of Patent: January 30, 2007Assignee: Sumitomo Electric Industries, Ltd.Inventor: Tatsuhiko Saitoh
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Patent number: 7167628Abstract: A device and method of blocking customer access to a fiber optic distribution cable. A service blocker is positioned between a fiber distribution cable and a customer drop cable within a fiber optic adapter. The service blocker includes a body which does not permit optical transmission between the fiber distribution cable and the customer drop cable. The service blocker includes a first end configured to be inserted within the fiber optic adapter and a second end configured connect with a fiber optic cable connector. A system for mounting fiber optic cables including a service blocker positioned within a bulkhead mounted adapter between two fiber optic cables.Type: GrantFiled: December 13, 2004Date of Patent: January 23, 2007Assignee: ADC Telecommunications, Inc.Inventor: Ronald A. Beck
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Patent number: 7160033Abstract: A ferrule for a light guide comprises a continuous metal sleeve which has a first tubular section and, at an axial spacing therefrom, a coaxial second tubular section which are connected to one another via an intermediate section, and a first plastic molded part formed around the free end of the first tubular section and a second plastic molded part which is provided at an axial spacing therefrom and which is formed around the ends of the two tubular sections adjacent to the intermediate section and around the intermediate section.Type: GrantFiled: March 23, 2005Date of Patent: January 9, 2007Assignee: Delphi Technologies, Inc.Inventors: Juergen Roeder, Martin Herlitz, Peter P. Schekalla, Juergen Pscheidt
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Patent number: 7153036Abstract: The present invention relates to an optical fiber communication component (1), and particularly a connector receptacle (10) for connecting to a connector plug (20) having an optical fiber (6) mounted within a projecting cylindrical ferrule. The connector receptacle (10) comprises a housing (2) that has a passageway (3) with an entrance for receiving the ferrule (7). A split sleeve clamp (27) is seated within the passageway (3) and has an opening oriented towards the entrance for receiving the projecting ferrule (7). A hollow sleeve (23) having a cylindrical outer surface (36) and an axially extending open channel (37), is gripped by the split sleeve clamp to define the diameter of the opening to the clamp. The open channel (37) extends along the longitudinal axis (5) of the passageway (3) to allow optical radiation (50) to be transmitted through the channel (37) to/from said connector plug (20).Type: GrantFiled: December 10, 2003Date of Patent: December 26, 2006Assignee: Avago Technologies Fiber IP (Singapore) Pte. Ltd.Inventors: David Healy, Martyn Owen, Paul Wilton
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Patent number: 7153035Abstract: Disclosed are an optical connector plug and an optical connector, wherein the grip member includes an inner barrel and an outer barrel, which are freely slid with respect to each other, the grip member having a reduction state where the inner barrel is accommodated in the outer barrel and an extension state where the inner barrel projects forwardly, and the plug frame being engaged and supported such that the plug frame is movable by a predetermined amount with respect to the outer barrel, and, at a leading end inside the inner barrel are provided a shield plate supported at a free slant with respect to the inner barrel via a base end of the shield plate, disposed at a shield position at which a leading end of the ferrule is shielded in the extension state, and disposed at a non-shield position at which accommodation of the plug frame in the inner barrel is allowed, an action plate supported at a free slant inside the shield plate via a base end of the action plate, and inclined along with the shield plate, wType: GrantFiled: March 3, 2005Date of Patent: December 26, 2006Assignee: Seikoh Giken Co., Ltd.Inventors: Junji Taira, Norimasa Arai, Kouji Minami
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Patent number: 7150567Abstract: A fiber optic connector including one or more ferrule assemblies having a ferrule and a keyed ferrule holder defining a first key slot and a second key slot, and a connector housing defining a key that is received within the first or the second key slot. The first key slot configures the connector in a first keyed position for simultaneous, coplanar end face polishing of the ferrules, and the second keyed position configures the connector for mating with a receptacle, optical device or another connector. A fiber optic connector including a connector outer housing defining a first key slot for positioning the connector housing in a first keyed position and a second key slot for positioning the connector housing in a second keyed position, a connector inner housing defining a key and a ferrule assembly including a ferrule and a ferrule holder, wherein the ferrule assembly is biased outwardly within the connector outer housing.Type: GrantFiled: May 27, 2005Date of Patent: December 19, 2006Assignee: Corning Cable Systems LLCInventors: James P. Luther, Thomas Theuerkorn, Hleu V. Tran