Miscellaneous Patents (Class 385/147)
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Patent number: 7587120Abstract: Provided are a volumetric three-dimensional display panel formed by stacking a plurality of transparent, flexible two-dimensional display panels, such as organic light-emitting devices, to have a curved surface, and a volumetric three-dimensional display system employing the volumetric three-dimensional display panel. In the volumetric three-dimensional display panel, two-dimensional images are displayed on the two-dimensional flexible display panels to form a single three-dimensional image, and a display surface of the volumetric three-dimensional display panel is curved with a predetermined curvature or is flat.Type: GrantFiled: May 5, 2006Date of Patent: September 8, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-phil Koo, Dae-sik Kim
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Patent number: 7587109Abstract: A hybrid, wide angle imaging system combines high sensitivity superposition arrays with a high resolution apposition array to generate distortion free images with an infinite depth of field. A conformal, superposition array of Keplerian telescope objectives focuses multiple apertures of light through the tubes of a louver baffle. The baffle tubes are terminated by field stops that separate the focused light into inverted, intermediate sub-images. A superposition array of field lenses, positioned immediately after the field stops, reverses the angles of the light beams. An apposition array of erector lenses, linked optically to the superposition arrays and field stops, refocuses and adjoins the beams into a single, upright image. The upright image is formed on the convex surface of a fiber optic imaging taper, which transfers the image to the flat bottom of the taper where it can be viewed through an eyepiece or digitized by a detector array.Type: GrantFiled: September 2, 2008Date of Patent: September 8, 2009Assignee: Spectral Imaging LaboratoryInventor: Francis Mark Reininger
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Patent number: 7583884Abstract: A refractive index matching tape adhering device easily handles a refractive index matching film. The adhering device has a refractive index matching tape adhering portion which can be adhered by stretching the refractive index matching tape. In the adhering device having a refractive index matching tape supplying portion, a refractive index matching tape adhering portion, and a refractive index matching tape collecting portion, the refractive index matching tape adhering portion has a pair of tape supporting members which can stretch the refractive index matching tape and a cradle which holds the refractive index matching tape in the adhering.Type: GrantFiled: April 25, 2007Date of Patent: September 1, 2009Assignee: Tomoegawa Co., Ltd.Inventors: Tadao Matsunaga, Masayoshi Suzuki, Nobuhiro Hashimoto, Kimio Nakano
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Patent number: 7583880Abstract: Provided are methods of forming printed circuit boards having optical functionality. The methods involve applying a dry-film to a printed circuit board substrate and forming an optical waveguide over the dry-film. The invention finds particular applicability in the electronics and optoelectronics industries.Type: GrantFiled: December 28, 2007Date of Patent: September 1, 2009Assignee: Rohm and Haas Electronic Materials LLCInventors: Edgardo Anzures, Philip D. Knudsen
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Patent number: 7583874Abstract: Influence of distance between two coupled strong-confinement photonic devices on optically resonant condition thereof and/or on optical forces.Type: GrantFiled: October 31, 2008Date of Patent: September 1, 2009Assignee: Massachusetts Institute of TechnologyInventors: Peter Rakich, Milos Popovic
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Patent number: 7580607Abstract: A center-lock aerial slack cable storage bracket (CLAS) is disclosed. More particularly, the CLAS improves time and efficiency of installation upon a cable under tension by employing a hinged center-lock mechanism. During installation the hinged center-lock mechanism enables the unit to be hinged-open, placed upon a cable under tension and hinged-closed. Once hinged-closed over the cable under tension, standard ‘off-the-shelf’ straps or tie-strips can be used to secure the unit into place, without a need for any specialized tools, hardware kits or brackets.Type: GrantFiled: February 6, 2008Date of Patent: August 25, 2009Assignee: Preformed Line Products CompanyInventors: John Jones, George P. Dudash
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Patent number: 7574098Abstract: A photonic crystal device according to the present invention includes: a first dielectric substrate 104 having a first lattice structure, of which the dielectric constant changes periodically within a first plane; a second dielectric substrate 105 having a second lattice structure, of which the dielectric constant changes periodically within a second plane; and an adjustment device (pivot 303) for changing a photonic band structure, defined by the first and second lattice structures, by varying relative arrangement of the first and second lattice structures. The first and second dielectric substrates 104 and 105 are stacked one upon the other.Type: GrantFiled: September 14, 2007Date of Patent: August 11, 2009Assignee: Panasonic CorporationInventors: Ushio Sangawa, Tomoyasu Fujishima, Hiroshi Kanno, Kazuyuki Sakiyama
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Patent number: 7574092Abstract: A system for protecting buried optic fibre nodes which permits surface inlay installation of cable without the need to expose free ends of the cable for threading through any apertures, includes a protective housing (10) composed of spaced apart panels (14,16) which define an interior space. The panels open to expose the interior for installation of a length of cable (50) therein. An insert (30) fits within the space, which includes a channel (38) which is exposed when the panels (14,16) open for insertion of a cable. The insert includes a void (32) to receive a cable junction box (34). A removable protective outer casing may be provided, either in the form of a pair of outer walls with a removable cap or base, or a can-like container having a removable top and two or more opposed slots communicating with the upper rim of the container.Type: GrantFiled: July 16, 2004Date of Patent: August 11, 2009Assignee: Teraspan Networks, Inc.Inventor: Darren Dofher
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Patent number: 7570865Abstract: One embodiment provides a method of testing humidity. The method includes measuring i) a first weight of a first device which encloses a plurality of interferometric modulators and ii) a second weight of a second device which encloses a plurality of interferometric modulators, wherein the first and second devices contain a different amount of water vapor. The method further includes comparing the weights of the first and second devices and determining a relative humidity value or a degree of the relative humidity inside one of the two devices based at least in part upon the weight comparison. In one embodiment, the relative humidity value or degree is determined considering at least one of the following parameters: i) temperature-humidity combination inside at least one of the devices, ii) the thickness and width of a seal of the at least one device, iii) adhesive permeability of a component of the at least one device, iv) a desiccant capacity inside the at least one device and v) a device size.Type: GrantFiled: January 28, 2008Date of Patent: August 4, 2009Assignee: IDC, LLCInventors: Brian J. Gally, Lauren Palmateer, Manish Kothari, William J. Cummings
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Patent number: 7566176Abstract: A cleaning apparatus (1100) for cleaning an endface (1104) of an optical fiber (1106), wherein a portion of the optical fiber is contained within an interface device (1103) is provided. The cleaning apparatus includes a housing (1114) having an interface portion (1124) adapted to be received by the interface device. The cleaning apparatus further includes a fluid dispensing assembly (1116) at least partially disposed within the housing, wherein at least a portion (1112) of the fluid dispensing assembly engages the endface when the interface portion is received by the interface device. The fluid dispensing assembly is operable to deliver a fluid and a solvent upon the endface when the interface portion of the housing is received by the interface device to aid in the removal of contaminants on the endface. The cleaning apparatus may include a contact cleaning assembly (1304) and/or a microscope (1408).Type: GrantFiled: June 18, 2007Date of Patent: July 28, 2009Assignee: Westover Scientific, Inc.Inventors: Steve Lytle, Kevin G. Cassady, Gregory J. Gerhard
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Patent number: 7567743Abstract: A method of terminating a fiber in a connector, the method comprising: (a) securing a stripped fiber to a device; (b) while the fiber is secured to the device, cleaving the fiber to produce a cleaved fiber; (c) securing a connector having a stub to the device; (d) while the connector and the fiber are secured to the device, inserting the cleaved fiber into the connector such that the cleaved fiber mates with the stub; (e) and securing the fiber to the connector.Type: GrantFiled: April 2, 2008Date of Patent: July 28, 2009Assignee: Tyco Electronics CorporationInventors: David Donald Erdman, Michael Lawrence Gurreri, Sean Patrick Kelly
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Patent number: 7565055Abstract: A loop back connector and methods for testing lines in a fiber optic network are disclosed. The loop back connector includes a ferrule having an interface side constructed for optical connection to a multifiber optical cable. The loop back connector also includes first and second optical loop back paths, each having first and second terminal ends positioned at the interface side. The terminal ends of each loop back path are adapted to be aligned to fibers in the multifiber optical cable. The method includes injecting a signal on a first optical path at a first location, looping back the signal at a second location onto a second optical path, and receiving the signal on the second optical path at the first location.Type: GrantFiled: April 19, 2006Date of Patent: July 21, 2009Assignee: ADC Telecommunications, Inc.Inventors: Yu Lu, Randy Reagan, Michael Noonan, Jeff Gniadek
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Patent number: 7565050Abstract: The present invention is directed to a light pipe having an improved structure of prisms. According to one embodiment of the present invention, a hollow light pipe comprises an inner-surface including a linear array of prisms; and a substantially smooth outer-surface, wherein a pitch of prisms in a first region is wider than a pitch of prisms in a second region. According to another embodiment of the present invention, a hollow light pipe comprises a hollow base pipe; and an insertion inserted into the base pipe and having a structured surface including an array of prisms, wherein a pitch of prisms in a first region is wider than a pitch of prisms in a second region.Type: GrantFiled: June 7, 2007Date of Patent: July 21, 2009Assignee: LG Electronics, Inc.Inventors: Sang Hoon Lee, Han Kyu Cho, Jong-Jin Kim
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Patent number: 7561776Abstract: A method of preventing hydrogen darkening of optic fiber, which includes a step of providing a protective barrier of hydrogen free flowing gas around the optic fiber, such that the flowing gas sweeps away hydrogen.Type: GrantFiled: November 29, 2005Date of Patent: July 14, 2009Assignee: Petrospec Engineering Ltd.Inventors: Gerald V Chalifoux, Robert B Logan
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Patent number: 7558457Abstract: A combined illumination and ventilation duct is disclosed. The present invention includes at least two optical pipes having air flown inside wherein light proceeds within the at least two optical pipes by being totally reflected and a connector connecting the at least two optical pipes together, the connector having a connecting nipple to be connected to a pipe. An upper part of the duct is embedded in a fake ceiling under a real ceiling and a lower part is exposed under the fake ceiling. Alternatively, the whole combined illumination and ventilation duct is installed to be exposed under the fake ceiling. As air and light pass through the combined illumination and ventilation duct, the light is totally reflected within the optical pipes to illuminate an indoor space and the air is supplied or discharged to ventilate the indoor space.Type: GrantFiled: May 17, 2006Date of Patent: July 7, 2009Assignee: LG Electronics Inc.Inventors: Keun Hyoung Choi, In Ho Choi, Dong Whan Choi, Ho Seon Choi
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Patent number: 7558445Abstract: An electro-optical device includes a semiconductor layer, a gate electrode, and a first insulating film, and a second insulating under the semiconductor layer. The first insulating film overlaps a junction region, but not a channel region, of the semiconductor layer. The gate electrode includes a first extended portion that continuously covers an upper and side face and of the first insulating film at the junction region. The gate electrode includes a second extended portion that overlaps and fills a groove in the second insulating that extends along at least the junction region.Type: GrantFiled: October 28, 2008Date of Patent: July 7, 2009Assignee: Seiko Epson CorporationInventor: Masahiro Yasukawa
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Patent number: 7555189Abstract: An optical device may include first and second male connectors and a patch panel that includes through holes for interconnecting the first male connectors and the second male connectors. The optical device may also include a patch panel cleaner to automatically clean the through holes of the patch panel, and a connector cleaner to automatically clean the first male connectors or the second male connectors.Type: GrantFiled: February 14, 2007Date of Patent: June 30, 2009Assignee: Verizon Services Organization Inc.Inventor: David Z. Chen
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Patent number: 7546018Abstract: A network provider cable is routed to a splitter box in a multi-dwelling unit or commercial building where the cable fibers are terminated. One or more riser cables, each terminated at one end at the splitter box, are routed through a building shaft. Each riser cable contains fibers associated with units located on a certain set of one or more floors of the building. The other end of each riser cable is terminated at an aggregation box associated with the floors of the set. A feeder cable is routed between the aggregation box and each floor of the set, or a corresponding floor area of one floor. A drop box is provided for each floor or floor area for terminating the corresponding feeder cable. Drop cables are routed between the drop box and units on the floor or in the floor area to be served.Type: GrantFiled: August 10, 2007Date of Patent: June 9, 2009Assignee: OFS Fitel, LLCInventors: Daniel Hendrickson, Peter A. Weimann, Hongbo Zhang
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Patent number: 7539389Abstract: The present invention relates generally to an angled optical fiber cleaver that is used to cleave optical fibers prior to mechanical splicing and that provides a desired optical fiber endface angle. More specifically, the present invention relates to an angled optical fiber cleaver that incorporates a novel retention and rotation clamp assembly that successively engages, securely holds, and rotates an optical fiber prior to cleaving, this rotation providing the desired optical fiber endface angle. Advantageously, the novel retention and rotation and clamp assembly of the present invention is actuated via a single linear button press/release, eliminating the cumbersome steps associated with conventional devices and methodologies.Type: GrantFiled: February 8, 2008Date of Patent: May 26, 2009Assignee: Corning Cable Systems LLCInventors: Jonathan Michael Brinson, Joshua Douglas Raker
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Patent number: 7532801Abstract: An imaging device illumination system comprises first and second elongate light guides configured to emit light toward an object to be imaged, each of the first and second light guides having an input window at one end thereof for receiving light from a light source and an end face at an opposite end thereof, wherein the input window of the first light guide is disposed proximate to the end face of the second light guide.Type: GrantFiled: April 5, 2007Date of Patent: May 12, 2009Assignee: Hewlett-Packard Development Company, L.P.Inventors: Paul K. Mui, C. Greg Kelsay
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Patent number: 7526174Abstract: In accordance with various embodiments, universal splitter module holder for a fiber optic distribution hub is provided. The universal hub splitter module holder is structured to retain any one of a plurality of fiber optic splitter modules within the fiber optic distribution hub. The universal splitter module holder includes a base and a hood removably connectable to the base to clamp and retain the splitter module between the base and the hood.Type: GrantFiled: May 15, 2007Date of Patent: April 28, 2009Assignee: Emerson Network Power, Energy Systems, North America, Inc.Inventors: Eduardo Leon, Daniel Sedlecky, George Wakileh
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Publication number: 20090103884Abstract: Method for the creation of a rewritable photonic device inserted in a photonic crystal (2) having a plurality of cavities (6); this method comprises the operation of injecting selectively a micro-quantity of a liquid (12) into predetermined cavities (6) so as to allow the introduction of permitted states within the photonic band gap of the crystal or modification of the prohibited states.Type: ApplicationFiled: March 21, 2007Publication date: April 23, 2009Inventors: Diederik Sybolt Wiersma, Silvia Vignolini, Volker Turck, Francesca Intonti
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Patent number: 7522785Abstract: Devices and techniques that use a polarization controller and a feedback control to the polarization controller to systematically control the polarization of light output from the polarization controller in measuring the polarization dependent loss (PDL) of an optical device or material that receives the light from the polarization controller or the degree of polarization (DOP) of a light beam directed into the polarization controller.Type: GrantFiled: November 30, 2005Date of Patent: April 21, 2009Assignee: General Photonics CorporationInventor: X. Steve Yao
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Patent number: 7522810Abstract: A scanning head includes a surface emitting part array panel which has an array of surface emitting parts to emit light A plurality of light guide parts are respectively opposite to the surface emitting parts. Each of light guide parts has an entrance plane to receive the light from the surface emitting part, a reflection plane to reflect the light from the entrance plane, and an exit plane to emit the light from the reflection plane.Type: GrantFiled: February 9, 2006Date of Patent: April 21, 2009Assignee: Casio Computer Co., Ltd.Inventors: Jun Ogura, Yasuhiro Daiku, Tomoyuki Shirasaki, Tetsuya Kusuno
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Patent number: 7522799Abstract: An all-optical logic gates comprises a nonlinear element such as an optical resonator configured to receive optical input signals, at least one of which is amplitude-modulated to include data. The nonlinear element is configured in relation to the carrier frequency of the optical input signals to perform a logic operation based on the resonant frequency of the nonlinear element in relation to the carrier frequency. Based on the optical input signals, the nonlinear element generates an optical output signal having a binary logic level. A combining medium can be used to combine the optical input signals for discrimination by the nonlinear element to generate the optical output signal. Various embodiments include all-optical AND, NOT, NAND, NOR, OR, XOR, and XNOR gates and memory latch.Type: GrantFiled: April 26, 2007Date of Patent: April 21, 2009Assignee: Coveytech LLCInventor: John Luther Covey
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Patent number: 7522804Abstract: In an optical transmission node, a plurality of shelves, respectively connected to a plurality of optical cables having limitations on bending radius, are stored in one rack of the node. In a shelf body thereof, the first and second opening portions are made in a front surface, and an extra-cable looping device loops an extra portion of the optical cable, further a moving mechanism is provided for moving the extra-cable looping device to avoid a space occupied by the units in a state removed from the second opening portion, this enables extra-cable handling within a limited spatial range and the insertion/removal of the units having various functions from the shelf in a state where the cable is active and further the improvement of a shelf mounting density per rack.Type: GrantFiled: December 21, 2004Date of Patent: April 21, 2009Assignee: Fujitsu LimitedInventors: Hideo Araki, Katsumi Kanasaki, Hirofumi Imabayashi, Kenji Toshimitsu, Yuichi Nakanishi
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Patent number: 7522813Abstract: Methods of reducing distortion in scanning fiber devices are disclosed. In one aspect, a method includes changing an intensity of light transmitted through a cantilevered optical fiber of a scanning fiber device. The method also includes changing a setpoint temperature for the scanning fiber device based at least in part on the change in the intensity of the light. Other methods, apparatus, systems, and machine-readable mediums are also disclosed.Type: GrantFiled: October 4, 2007Date of Patent: April 21, 2009Assignee: University of WashingtonInventors: Richard S. Johnston, Charles David Melville
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Patent number: 7522812Abstract: In one embodiment, a device for coupling communications signals onto a medium-voltage power line includes a first connector, a second connector and one or more components. The first connector is adapted to couple to a low-voltage communications line. The second connector is adapted to couple to a surge arrester. The one or more components are operable to substantially match the impedances between the surge arrester and the low-voltage communications line.Type: GrantFiled: June 20, 2006Date of Patent: April 21, 2009Assignee: International Broadband Electric Communications, Inc.Inventor: Brent R. Zitting
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Patent number: 7519263Abstract: A light-emitting funneling apparatus comprises a conduit with a pouring end and a discharge end, wherein the pouring end is wider than the discharge end. The light-emitting funneling apparatus also comprises one or more light sources positioned adjacent to a portion of the conduit and configured to illuminate in a direction of a flow of material through the conduit. In some embodiments, the one or more light sources are external to the conduit. Alternatively, the one or more light sources are internal to the conduit. The light-emitting funneling apparatus further comprises a means for selectively activating the light source. In some embodiments, the funnel comprises a battery for powering the one or more light sources.Type: GrantFiled: May 18, 2007Date of Patent: April 14, 2009Inventor: James Richards
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Publication number: 20090092368Abstract: At least one exemplary embodiment is directed to a method for fabricating a three-dimensional photonic crystal. In the method for fabricating the three-dimensional photonic crystal, a plurality of layers can be defined as one unit, and the total thickness of the one unit can be controlled such that an average layer-thickness of the plurality of layers in the one unit is about equal to the ideal layer-thickness so that a photonic band-gap occurs in a desired wavelength region.Type: ApplicationFiled: December 8, 2008Publication date: April 9, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Akinari Takagi, Hikaru Hoshi, Kiyokatsu Ikemoto, Kazuya Nobayashi
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Patent number: 7515520Abstract: A recording apparatus including a recording unit that performs recording on a recording medium; a transporting unit capable of transporting the recording medium; a first guide member and a second guide member disposed facing the first guide member having an section of a transport path of the recording medium disposed therebetween; and an optical sensor including a light-emitting portion and a light-receiving portion and having an optical axis that traverses the transport path of the recording medium between the first and second guide members. At least one of the light-emitting portion and the light-receiving portion projects from an outer side of the transport path towards the first guide member. The first guide member has a cutout having an opening where the light-emitting portion or the light-receiving portion is disposed. The opening is covered with a sheet member except for an area where the optical axis of the optical sensor extends.Type: GrantFiled: August 17, 2007Date of Patent: April 7, 2009Assignee: Seiko Epson CorporationInventors: Toshikazu Kotaka, Naohiro Ueyama, Yasuo Motohashi, Satoru Watanabe
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Patent number: 7512344Abstract: A dispersion compensator is applicable to a WDM optical transmission system and features low loss, wideband usage, and minimum ripple. The dispersion compensator is constructed so that the light emitted from a collimator will be reflected from an etalon of a 100% single-side reflectance by arranging the etalon and a mirror in parallel or with a slight angle and then enter another collimator. Elements for achieving variable dispersion compensation by changing temperature using a heater, for example, are also provided. In addition, these dispersion compensating elements are provided in multi-stage form and the angle of the mirror and the reflectance of the etalon are optimized. Thus, it becomes possible to realize a dispersion compensator applicable to a WDM optical transmission system and featuring low loss, wideband usage, and minimum ripple.Type: GrantFiled: July 11, 2005Date of Patent: March 31, 2009Assignee: Hitachi Metals Ltd.Inventors: Toshiki Sugawara, Satoshi Makio
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Patent number: 7512302Abstract: An all-optical logic gates comprises a nonlinear element such as an optical resonator configured to receive optical input signals, at least one of which is amplitude-modulated to include data. The nonlinear element is configured in relation to the carrier frequency of the optical input signals to perform a logic operation based on the resonant frequency of the nonlinear element in relation to the carrier frequency. Based on the optical input signals, the nonlinear element generates an optical output signal having a binary logic level. A combining medium can be used to combine the optical input signals for discrimination by the nonlinear element to generate the optical output signal. Various embodiments include all-optical AND, NOT, NAND, NOR, OR, XOR, and XNOR gates and memory latch.Type: GrantFiled: May 30, 2008Date of Patent: March 31, 2009Assignee: Coveytech LLCInventor: John Luther Covey
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Patent number: 7512299Abstract: Fiber optic cable systems and methods incorporating a luminescent compound-containing layer to identify cracks. Exemplary embodiments include a fiber optic cable apparatus including a core for receiving laser light emitted from a VCSEL for the detection of faults in the fiber optic cable, a cladding disposed around the core, the cladding having an index of retraction differential with the core thereby allowing containment of light within the core by total internal reflection within the core, a buffer disposed around the cladding, the buffer capable of receiving LED emitted light for the detection of faults in the fiber optic cable, a braiding layer disposed around the buffer and configured to allow LED light to transmit from the buffer, and a jacket disposed around the braiding layer, the jacket having optical properties to receive LED light transmitted down the buffer in response to VCSEL light having been unsuccessfully transmitted down the core.Type: GrantFiled: January 28, 2008Date of Patent: March 31, 2009Assignee: International Business Machines CorporationInventors: Jessica R. Berens, Lad W. Freitag, Joseph Kuczynski, Fraser A. Syme
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Patent number: 7503707Abstract: Methods for splicing optical fibers include coupling a first optical fiber cable to a longitudinally extending closure frame and coupling a second optical fiber cable to an adjustable guide member on the closure frame. The adjustable guide member is moved toward the first optical fiber cable to provide a distance between the first and second optical fiber cable less than an exposed length of the first and second optical fiber therebetween to provide a slack length of optical fiber. Cleaved exposed ends of a first optical fiber from the first optical fiber cable and a second optical fiber from the second optical fiber cable are positioned proximate each other in a splice station displaced from the closure frame utilizing the slack length of optical fiber. The first and second optical fibers are spliced in the splice station and the adjustable guide member is moved away the first optical fiber cable to remove the slack length and position the spliced optical fibers in the closure frame.Type: GrantFiled: November 6, 2007Date of Patent: March 17, 2009Assignee: Tyco Electronics CorporationInventors: Craig Ray, Jackie Moore
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Patent number: 7505662Abstract: A device for measuring a force exerted by a ferrule of a fiber optic connector includes a base including an adapter mount configured to accept one of a plurality of adapter assemblies, and a stage coupled to the base, the stage moving longitudinally with respect to the base. The device also includes a force gauge coupled to the stage, and an adapter assembly configured to be coupled to the adapter mount of the base, the adapter assembly defining an adapter configured to receive the fiber optic connector. The fiber optic connector is connected to the adapter assembly, and the force gauge measures the force exerted by the ferrule of the fiber optic connector. Systems and methods for measuring the force exerted by the ferrule of a fiber optic connector are also included.Type: GrantFiled: November 29, 2006Date of Patent: March 17, 2009Assignee: ADC Teleommunications, Inc.Inventors: Robert J. Bianchi, Ryan L. Lindquist
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Patent number: 7502534Abstract: A retro-reflect type light pipe, an illumination device including the same, and a projection display including the illumination device are provided. The retro-reflective type light pipe includes an incident portion through which light is incident, a guide portion which guides the incident light such that the incident light propagates internally therewithin while being reflected at inner walls thereof, and which thereby mixes the incident light thus providing uniform light. A retro-reflective portion, provided at one end of the guide portion, re-reflects the incident light toward the incident portion. The illumination device includes a light source, the retro-reflective type light pipe, and an optical path-changing member provided between the light source and the retro-reflective type light pipe, which changes the direction of the light emitted from the light source such that the light from the light source propagates toward the retro-reflective type light pipe.Type: GrantFiled: June 21, 2007Date of Patent: March 10, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Young-chol Lee, Kirill Sokolov
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Patent number: 7502535Abstract: A system of digitally controlling light output by producing separate control signals for different colors of light. The light is contained in an optical waveguide, either prior to shaping or after shaping. Each of the control signals is coupled to a digitally controlled device which controls the shape of the light output. The digital controlling device can be digital mirror devices, for example.Type: GrantFiled: March 25, 2008Date of Patent: March 10, 2009Inventor: Jeremiah J Harris
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Patent number: 7499609Abstract: A blocking portion is provided at an end of the mirror to prevent a light beam emitted from an input port from being transmitted to or reflected by first and second output ports. The mirror is inserted to a position where the end of the blocking portion of the mirror reaches a boundary P2? on the insertion side of an area to be blocked to obtain a permissible crosstalk value of the light beam. The mirror is removed to a position where the rear end of the blocking portion of the mirror reaches a boundary P2 on the removal side of the area to be blocked. The mirror is movably driven between the removal position and the insertion position in the optical path of a first light beam by a drive. Thus it is possible to reduce the length of the driving stroke of the mirror.Type: GrantFiled: May 31, 2007Date of Patent: March 3, 2009Assignee: Japan Aviation Electronics Industry LimitedInventor: Yoshichika Kato
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Publication number: 20090050824Abstract: A method of fabricating a structure from diamond material or diamond-like carbon material, and a structure according to the method, the method comprising the steps of imposing a structural transformation on the crystallographic structure of the material in a first region located at a first depth below a surface of the material; imposing a structural transformation on the crystallographic structure of the material in a second region located at a second depth below the surface of the material and above of the first region, the second depth being selected so that the first region is separated from the second region by a third region; and removing at least a portion of the material of the first and second regions; wherein the structural transformations are imposed so that the crystallographic structure of the third region is largely unaffected and the third region has opposite surface portions from which material of the first and second regions has been removed.Type: ApplicationFiled: June 24, 2008Publication date: February 26, 2009Applicant: THE UNIVERSITY OF MELBOURNEInventors: Shane Huntington, Steven Prawer, Brant Gibson, Paolo Olivero, Andrew Greentree, Barbara Fairchild
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Patent number: 7496271Abstract: A printed circuit board (18) for electrically connecting to an optical subassembly (16) includes a board base (230), a conductive trace (232), and a board conductor (234). The optical subassembly (16) includes at least one component pad (346). The board base (230) is made of a substantially nonconductive material. Further, the board base (230) defines a recessed region (238) that is sized and shaped to receive a portion of the optical subassembly (16). The conductive trace (232) is secured to the board base (230). The board conductor (234) is positioned near the receiver region (238). Further, the board conductor (234) is positioned near the component pad (346) when the optical subassembly (16) is positioned in the receiver region (238). Moreover, the board conductor (234) is electrically connected to the conductive trace (232).Type: GrantFiled: April 19, 2007Date of Patent: February 24, 2009Assignee: Bookham Technology plcInventor: James Gerard Quaderer
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Patent number: 7496270Abstract: A light emitting unit, an apparatus and method for manufacturing the same, an apparatus for molding a lens thereof, and a light emitting device package thereof, which are capable of achieving an enhancement in light extraction efficiency and an improvement in mass productivity, are disclosed. The light emitting unit manufacturing apparatus includes a mold including a first mold and a second mold coupled to each other under a condition in which at least one light emitting unit is interposed between the first and second molds, a groove formed in one of the first and second molds at a position facing the light emitting unit, the groove having a lens shape, and a passage extending from an outer surface of the mold to the groove.Type: GrantFiled: February 16, 2007Date of Patent: February 24, 2009Assignees: LG Electronics Inc., LG Innotek Co., Ltd.Inventors: Yong Suk Kim, Hoon Hur
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Optical and/or electrical communications fabrics in circuit boards and/or other composite structures
Patent number: 7496249Abstract: An optical and/or electrical communication and structural fabric, method and system. For one aspect, an optical fabric is embedded within a structure to communicate an optical and/or electrical signal and to stiffen the structure. The structure may be a circuit board, for example, and the optical cloth may be used to interconnect devices coupled to the circuit board. For another aspect, the structure may be a different type of structure such as, for example, part of a vehicle, airplane or other structure.Type: GrantFiled: December 29, 2005Date of Patent: February 24, 2009Assignee: Intel CorporationInventor: John W. Mates -
Patent number: 7492901Abstract: A single-photon generator includes an exciton generation part including therein a quantum dot, an excitation part for generating an exciton in the exciton generator part, a recombination control part for controlling recombination timing of the exciton in the exciton generation part, and an optical window provided in the exciton generation part so as to pass a single photon formed as a result of recombination of the exciton, wherein the recombination control part causes, in the exciton generation part, recombination of the excitons at longer intervals than a recombination lifetime of a exciton molecule.Type: GrantFiled: February 18, 2004Date of Patent: February 17, 2009Assignee: Fujitsu LimitedInventors: Kazuya Takemoto, Tatsuya Usuki, Motomu Takatsu
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Patent number: 7489845Abstract: A light device includes a base portion, a light portion having a first plurality of substantially translucent fiber optic elements and a second plurality of substantially translucent fiber optic elements, and a light source located within the base portion. A power supply may be electrically connected to the light source. The light source emits light to the first plurality of substantially translucent fiber optic elements and the second plurality of substantially translucent fiber optic elements. The first plurality of substantially translucent fiber optic elements may have a shorter length than the second plurality of substantially translucent fiber optic elements. The second plurality of substantially translucent fiber optic elements may have a modified tip region for reflecting light from the tip region. The light source may be formed by LEDs or tungsten filament bulbs. A control circuit may cause the light emitted to be constant or flashing.Type: GrantFiled: May 10, 2007Date of Patent: February 10, 2009Inventor: T. Y. Ip
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Patent number: 7486868Abstract: A method, system and computer program product for improving accuracy and experience of a game. Signals are sent from a computer system to appropriate sensors based on a player's or game object's position to activate connected light-emitting fibers that are blended with grass on a playing field. The light-emitting fibers are activated in such a manner to display light to indicate an infraction (e.g., a player was in an offside position), a successful play (e.g., team made a first down), appropriate maneuvers, boundaries for a play, etc., thereby ensuring the game is fair and accurate and enhancing the experience of the game.Type: GrantFiled: August 1, 2007Date of Patent: February 3, 2009Assignee: International Business Machines CorporationInventors: Lisa Anne Seacat, Travis M. Grigsby, Steven Michael Miller
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Patent number: 7486889Abstract: A transceiver test module and method for testing an optical transceiver. An optical wrap interconnects the optical transmitter and optical receiver of an optical transceiver. A processor system reads information from an optical transceiver; provides a signal to the optical transceiver to operate the optical transceiver to transmit a signal at the optical transmitter, which is received via the optical wrap; detects diagnostic information from the optical transceiver for errors of the optical transceiver; and determines the rated speed of the optical transceiver from the read information. Operation of the optical transceiver at the rated speed is verified by the diagnostic information.Type: GrantFiled: June 23, 2006Date of Patent: February 3, 2009Assignee: International Business Machines CorporationInventors: Jonathan Wade Ain, Craig Anthony Klein
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Patent number: 7486867Abstract: Certain MEMS devices include layers patterned to have tapered edges. One method for forming layers having tapered edges includes the use of an etch leading layer. Another method for forming layers having tapered edges includes the deposition of a layer in which the upper portion is etchable at a faster rate than the lower portion. Another method for forming layers having tapered edges includes the use of multiple iterative etches. Another method for forming layers having tapered edges includes the use of a liftoff mask layer having an aperture including a negative angle, such that a layer can be deposited over the liftoff mask layer and the mask layer removed, leaving a structure having tapered edges.Type: GrantFiled: August 18, 2006Date of Patent: February 3, 2009Assignee: QUALCOMM MEMS Technologies, Inc.Inventor: Chun-Ming Wang
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Patent number: 7483603Abstract: Exemplary embodiments of the present invention provide optical devices including optical members whose disposed positions, shapes and sizes are excellently controlled, and methods for manufacturing the same, and to provide optical modules and optical transmission devices that include the aforementioned optical devices. An optical device of the exemplary embodiments of the present invention include a device section having an optical surface, a pointed section provided in a manner to surround the optical surface, and an optical member having at least one section that is provided on the optical surface.Type: GrantFiled: August 29, 2006Date of Patent: January 27, 2009Assignee: Seiko Epson CorporationInventor: Tsuyoshi Kaneko
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Patent number: 7477826Abstract: According to embodiments of the present invention, a cable sealing assembly for providing an environmental seal about a cable includes a housing, a flowable cable sealant and a compression feature. The housing includes first and second housing parts. The first housing part defines a cable passage to receive a cable having a lengthwise cable axis. The cable sealant is disposed in the cable passage. The compression feature forms at least a part of the second housing part and is movable in an installation direction between a ready position and an installed position. The compression feature is shaped and configured to force the cable sealant to flow about the cable in a direction transverse to the cable axis to circumferentially surround a portion of the cable when the compression feature is moved from the ready position to the installed position.Type: GrantFiled: October 30, 2007Date of Patent: January 13, 2009Assignee: Tyco Electronics CorporationInventors: Julian Mullaney, James Bert Powell, William Alan Carrico, Christopher Alan Hastings