Stationary Waveguides With Movable Opaque Element Patents (Class 385/19)
  • Patent number: 10405782
    Abstract: A photoplethysmographic device including at least one laser light source and further including a protective sensor connector that has a protective flap (350), a mechanism (340) for controlling movement of the protective flap, and a plurality of interconnections, at least one of which is an optical connection (240). The movement of the protective flap designed to provide at least a substantially open position and a substantially closed position.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: September 10, 2019
    Assignee: Kestrel Labs, Inc.
    Inventors: Jonas Alexander Pologe, Theodore Philip Delianides
  • Patent number: 10203460
    Abstract: An optical semiconductor module includes a resin body having a first surface and an opposed second surface, an optical device having a third surface and a fourth surface opposite the third surface, the optical device comprising an optical element located at the fourth surface, the optical element capable of at least one of receiving light from, and transmitting light through, the third surface, a first terminal located at the first surface of the resin body, and an electrical connection between the first terminal and the optical device, the electrical connection embedded in the resin body.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: February 12, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hideto Furuyama, Yoichiro Kurita, Hiroshi Uemura, Fumitaka Ishibashi
  • Patent number: 10134922
    Abstract: A window structure includes a window, a design layer structure on the window, a light shield layer on the design layer structure, and a light absorption layer. The design layer structure includes a first hole exposing a portion of the window. The light shield layer includes a second hole in fluid communication with the first hole. The light absorption layer covers at least a portion of the design layer structure exposed by the first and second holes, and includes a third hole exposing a portion of the window. By including the light absorption layer of a gray or black color to cover exposed portions of the design layer structure, a vignette about an image caused by the design layer structure is prevented.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: November 20, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Myung-An Min
  • Patent number: 9599772
    Abstract: Embodiments include a high bandwidth optical connection system suitable for interconnecting servers, for example within a rack of a datacenter. An edge mount optical connector assembly includes an edge-mount housing providing topside socket contacts proximate to a first end of the housing and a port at a second end to receive an optical plug connector. A socket latch cantilevered from an anchor point on the housing includes a latching face to contact a keeper face disposed on the housing and a spring load application surface between the anchor point and the latching face to apply a spring force against the electrical contacts for retention of a removable optical transceiver module. An optical plug connector includes a front housing joined to a rear housing with a plug lens spring loaded within the housing and with alignment features comprising two flat alignment surfaces orthogonally oriented relative to each other.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: March 21, 2017
    Assignee: Intel Corporation
    Inventors: Qi Qi, Jamyuen Ko, Chun Chit Lam
  • Patent number: 9319264
    Abstract: Network performance may be improved by adjusting a logical network topology while avoiding attendant disruptions. By identifying an alternative logical topology, routing network traffic away from links that will be eliminated from the alternative logical topology, and updating a traffic routing plan upon the adoption of the alternative logical topology, a network may adopt a more efficient topology without misdirecting network traffic.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: April 19, 2016
    Assignee: Google Inc.
    Inventors: Leon Poutievski, Amin Vahdat, Ashish Naik
  • Patent number: 9195009
    Abstract: Improved systems and methods for optical switching are provided. These devices and methods can be used to improve the effectiveness of a wide variety of different optical systems and techniques. One embodiment provides a device and method for optical switching using a microfluidic chamber and droplets of liquid. Specifically, the droplets of liquid are controllably passed through the microfluidic chamber to switch the passing of light between different optical outputs. Thus, the optical switch can switch the light from one output to another by controllably passing droplets of liquid through the microfluidic chamber.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: November 24, 2015
    Assignee: AMO Wavefront Sciences, LLC
    Inventor: Devon E. Reid
  • Patent number: 8909007
    Abstract: A circuit switched optical device includes a first array of intersecting hollow waveguides formed in a first plane of a substrate. A second array of intersecting hollow waveguides is formed in a second plane of the substrate, and the second plane is positioned parallel to the first plane. An optical element within the first array selectively redirects an optical signal from the first array to the second array.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: December 9, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Shih-Yuan (S Y) Wang, Michael Renne Ty Tan
  • Patent number: 8849077
    Abstract: A wavelength selective switch includes a light input output portion having an input port and an output port for wavelength-multiplexed light, which are arranged in an array form in a first direction, a light dispersive unit which separates the wavelength-multiplexed light input from the input port, into signal wavelengths, a condenser element which condenses light separated into the signal wavelengths, and a light deflective element array which deflects the signal light in the first direction such that, respective signal wavelength light condensed by the condenser element is switched to a desired output port. In such wavelength selective switch, the light input output portion is divided into m groups, and the light deflective element array is arranged in m rows in the first direction to correspond with the m groups of the light input output portion, wherein m is an integer.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: September 30, 2014
    Assignee: JDS Uniphase Corporation
    Inventor: Koji Matsumoto
  • Patent number: 8837875
    Abstract: An optical path switch and an optical router are provided. The optical path switch comprises an input optical path (100), two output optical paths (201, 202), and an optical path switching element (300). The optical path switching element selectively routes the beam from the input optical path to one of the output optical paths. The optical path switching element comprises a semiconductor substrate (301), an inter-layer dielectric layer (307) on the surface of the semiconductor substrate, a cavity (302) disposed in the inter-layer dielectric layer, and an elastic light guiding plate (306) disposed in the cavity. One end of the cavity is connected with the input optical path, and the other end is separated into an upper cavity (304) and a lower cavity (305) by an isolating layer (303).
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: September 16, 2014
    Assignee: Lexvu Opto Microelectronics Technology (Shanghai) Ltd
    Inventor: Jianhong Mao
  • Patent number: 8781319
    Abstract: A configurable optical communications system (100) for establishing point-to-point communications between multiple computer servers (160) coupled to a common midplane or backplane communications bus (132), wherein at least two of the servers include an optical input/output device (170) for sending and receiving an optical signal (112). The system further includes an optical communications pathway (140) that is configured to carry the optical signal, and at least two pivotable mirrors (150) located within the optical pathway and in-line with the optical input/output devices that are selectively orientated to direct the optical signal between the optical input/output devices to establish the point-to-point communication between the at least two servers.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: July 15, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Martin Goldstein, Terrel Morris, Eric Peterson, Paul Kessler Rosenberg
  • Publication number: 20140153869
    Abstract: An optical switch having a housing, and two optical fibers, that can be connected to a light source and a light detector. The optical switch includes a moveable member that moves from a first position to a second position. In the first position, an optical path is present through the two fibers guide using a reflection or emission of light from the glowable member. In the second position, there is no optical path present through the switch.
    Type: Application
    Filed: February 11, 2014
    Publication date: June 5, 2014
    Inventors: Christopher E. Cox, Raleigh L. Cox
  • Patent number: 8699832
    Abstract: A light-shielding portion (10) shields the light spot of output light output toward a shunt position ? by a projecting portion (12). Hence, the output light output toward the shunt position ? does not travel to an output port (111). This allows to prevent crosstalk.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: April 15, 2014
    Assignees: Nippon Telegraph and Telephone Corporation, NTT Electronics Corporation
    Inventors: Nobuaki Matsuura, Koichi Hadama, Etsu Hashimoto, Yuzo Ishii, Mitsuo Usui, Tohru Matsuura, Toshiki Nishizawa, Yuji Mitsuhashi
  • Patent number: 8687278
    Abstract: An opto-mechanical switch produces different optical paths from two optical path sections out of a plurality of optical path sections that are oriented in different spatial directions. The switch has an optical component on which one end of each optical path section impinges, and which is adapted to be moved linearly in a direction of movement at right angles to the optical path sections between different switching positions, in which it selectively couples different optical path sections optically with each other. Further provided is a measuring system for the analysis of fluids, having such an opto-mechanical switch.
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: April 1, 2014
    Assignees: Buerkert Werke GmbH, Karlsruher Institut fuer Technologie
    Inventors: Marko Brammer, Timo Mappes
  • Patent number: 8625153
    Abstract: A multi-dimensional data registration integrated circuit is configured for driving array-arrangement devices. The array-arrangement devices comprise a plurality of first hierarchy sets, each which comprises a plurality of second hierarchy sets. The multi-dimensional data registration integrated circuit comprises a first hierarchy address selection circuit, a second hierarchy address selection circuit and a data supply circuit. The first hierarchy address selection circuit scans the first hierarchy sets, and selects a unit of the first hierarchy sets to activate it. The second hierarchy address selection circuit scans the second hierarchy sets. The data supply circuit writes a plurality of data into each designated unit of the second hierarchy sets according to the scanning sequence of the second hierarchy address selection circuit.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: January 7, 2014
    Assignee: National Tsing Hua University
    Inventors: Fan Gang Tseng, Jian Chiun Liou
  • Patent number: 8616781
    Abstract: An expanded beam optical connector includes a housing and an expanded beam lens being mounted in the housing. The connector is operable to axially align the expanded beam lens and a terminated optical fiber so that the expanded beam lens is configured to be in optical communication with the optical fiber.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: December 31, 2013
    Assignee: Innovative Intellectual Properties LLC
    Inventor: Greyson O. Knapp
  • Patent number: 8488937
    Abstract: A light distribution assembly includes a housing having a longitudinal length and having one or more light sources mounted to the housing. The light distribution assembly also includes a coupler section having a body extending from the housing along a longitudinal axis between a light entry end and a light exit end. The light entry end has a major axis extending in a first direction and the light exit end has a major axis extending in a second direction, wherein the coupler section is shaped such that the body is rotated about the longitudinal axis of the coupler section so that first direction is approximately perpendicular relative to the second direction. One or more light pipes are attached to the light exit end of the coupler section.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: July 16, 2013
    Assignee: Tyco Electronics Canada, ULC
    Inventors: Dragos N. Luca, Zoran Krnetic
  • Patent number: 8483526
    Abstract: An innovative micro-size photonic switch is presented. The photonic switch is comprised of: a mirror having a reflecting surface; an input waveguide; and an output tapered waveguide structure. The photonic switch further includes a switching mechanism disposed adjacent to the reflecting surface and operable to change the refractive index along the reflective surface and thereby shift the angle at which the optical signal reflects from the mirror. More specifically, the switching mechanism may operate to change concentration of free carrier distribution along the reflective surface and thereby displace the effective reflecting interface of the mirror. In this way, the optical signal can be directed to one of two or more output ports of the output tapered waveguide structure and finally exited by one output waveguide channel that is connected to the selected port of the output tapered waveguide structure.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: July 9, 2013
    Assignee: University of Ottawa
    Inventors: DeGui Sun, Trevor Hall
  • Publication number: 20130121637
    Abstract: An optical switch having a housing, a light source and a light detector. The light source and light detector are located remote from the housing. The light source is connected to the housing with a first light guide, and the light detector is connected to the housing with a second light guide. The first and second light guide cables have distal ends positioned through the housing and a part of the activator housing is a glowable diffuse reflector. The switch includes a moveable member that moves in a path in the switch body between an optical path present state and an optical path absent state.
    Type: Application
    Filed: December 6, 2012
    Publication date: May 16, 2013
    Inventors: Christopher E. Cox, Raleigh L. Cox
  • Patent number: 8393408
    Abstract: An optical control is disclosed which is particularly suitable for application as a switching device, regulating device or sensor device for a power tool. At least two optical waveguides are provided one of which being configured as a transmitting waveguide is coupled to a light source, a second one of which being configured as a receiving waveguide cooperating therewith is coupled to an evaluation circuitry. Both waveguides cooperate with a control element that is movable at least between two positions in which light signals of different magnitude are transmitted from the transmitting waveguide into the receiving waveguide.
    Type: Grant
    Filed: May 3, 2010
    Date of Patent: March 12, 2013
    Assignee: C. & E. Fein GmbH
    Inventors: Boris Rudolf, Sigmund Braun, Christof Kress
  • Patent number: 8285089
    Abstract: A microelectromechanical systems device fabricated on a pre-patterned substrate having grooves formed therein. A lower electrode is deposited over the substrate and separated from an orthogonal upper electrode by a cavity. The upper electrode is configured to be movable to modulate light. A semi-reflective layer and a transparent material are formed over the movable upper electrode.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: October 9, 2012
    Assignee: Qualcomm MEMS Technologies, Inc.
    Inventor: Clarence Chui
  • Patent number: 8285090
    Abstract: A serial optical data transmission system is provided. The serial optical data transmission system includes a displaceable optical pathway disposed adjacent to a slot configured to receive a first monitoring and/or control module. The optical pathway is biased towards a serial optical data bus position for transmission of optical data to or from at least one second monitoring and/or control module when the first monitoring and/or control module is removed from the slot. Further, the optical pathway is displaced from the serial optical data bus position when the first monitoring and/or control module is in the slot.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: October 9, 2012
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: David A. Vasko, Robert E. Lounsbury, Kenwood H. Hall, Nathan J. Molnar, Douglas R. Bodmann
  • Patent number: 8280206
    Abstract: A wavelength selective switch (WSS) with hitless switching. The WSS includes the fiber collimator array, the focusing lens, collimating lens, diffraction grating, focusing lens, and attenuation reflection unit array. Each attenuation reflection unit has an interconnected transmission-type MEMS attenuator and a one-dimension MEMS reflector. The transmission-type MEMS attenuator is positioned in the front of the one-dimension MEMS reflector. The central axis of the transmission-type MEMS attenuator aligns and coincides with that of the one-dimension MEMS reflector, with the two central axes being glued together. The WSS of the present invention effectively utilizes the combination of a one-dimension reflector array and a transmission-type optical attenuator chip. With the use of one-dimension reflector array, instead of the known two-dimension reflector array, the complexity of design and manufacture is greatly reduced, thereby reducing the production costs of the switch.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: October 2, 2012
    Assignee: Accelink Technologies Co., Ltd.
    Inventors: Qianggao Hu, Liping Sun, Liu Yang, Zhilin Yuan, Hui Xie, Rui Yang
  • Patent number: 8229259
    Abstract: A device having a case, an input optical fiber and an output optical fiber and a light path extending between the input and output optical fiber. A light path interrupting element is disposed within the case and is movable from a first position at which it interrupts a portion of the light path so that a first amount of light can reach the output optical fiber to a second position at which a second amount of light can reach the output optical fiber. A retainer is moveable relative to the case from a retaining position to a disengaged position. At the retaining position the retainer is engaged with the light path interrupting element to retain the light path interrupting element at the first position, and at the disengaged position the retainer is disengaged from the light path interrupting element and the light path interrupting element is at the second position.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: July 24, 2012
    Assignee: Lockheed Martin Corporation
    Inventors: Brian L. Uhlhorn, Howard J. Schantz
  • Patent number: 8218919
    Abstract: A MEMS-based display device is described, wherein an array of interferometric modulators are configured to reflect light through a transparent substrate. The transparent substrate is sealed to a backplate and the backplate may contain electronic circuitry fabricated on the backplane. The electronic circuitry is placed in electrical communication with the array of interferometric modulators and is configured to control the state of the array of interferometric modulators.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: July 10, 2012
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventor: Karen Tyger
  • Patent number: 8126297
    Abstract: A microelectromechanical systems device fabricated on a pre-patterned substrate having grooves formed therein. A lower electrode is deposited over the substrate and separated from an orthogonal upper electrode by a cavity. The upper electrode is configured to be movable to modulate light. A semi-reflective layer and a transparent material are formed over the movable upper electrode.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: February 28, 2012
    Assignee: Qualcomm MEMS Technologies, Inc.
    Inventor: Clarence Chui
  • Patent number: 8103138
    Abstract: A tunable filter is provided.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: January 24, 2012
    Assignee: O-Net Communications (Shenzhen) Limited
    Inventors: Yang Fang, Bin Chen, Chuan Zhang, Hong Xie
  • Patent number: 8090229
    Abstract: A MEMS-based display device is described, wherein an array of interferometric modulators are configured to reflect light through a transparent substrate. The transparent substrate is sealed to a backplate and the backplate may contain electronic circuitry fabricated on the backplane. The electronic circuitry is placed in electrical communication with the array of interferometric modulators and is configured to control the state of the array of interferometric modulators.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: January 3, 2012
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventor: Karen Tyger
  • Patent number: 8036502
    Abstract: An optical bench in a wavelength selective switch (WSS) is mounted using a combination of fixed mounts and stress-free mounts. The WSS is packaged in an enclosure including a base, a sidewall, and a lid. The optical switching engine is attached directly to the base. The optical bench is attached to the base and the optical components supported thereon are aligned with the array of switching elements of the switching engine. The optical bench is attached to the base with at plurality of mounts, which include at least one movable mount supporting movement of the optical bench in a plane parallel to the optical bench and at least one fixed mount maintaining optical alignment between the dispersive element and the array of switching elements.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: October 11, 2011
    Assignee: JDS Uniphase Corporation
    Inventors: Nenad Duricic, Sheldon McLaughlin, Pierre D. Wall
  • Patent number: 7889957
    Abstract: An optical selector switch contains an optical waveguide that includes a first optical waveguide portion having a first light-transmissivity, a second optical waveguide portion having a second light-transmissivity, reflecting members that reflect light, and a light-dividing device that reflects and transmits light; at least one light-emitting unit that emits the light toward the first optical waveguide portion of the optical waveguide; and at least one light-receiving unit that receives the light which is incident to the first optical waveguide portion of the optical waveguide from the light-emitting unit, based on a directivity due to an angle of the incident light to the first optical waveguide portion of the optical waveguide, wherein the incident light to the first optical waveguide portion is emitted radially toward the circumference of the second optical waveguide portion of the optical waveguide.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: February 15, 2011
    Assignee: Sony Corporation
    Inventors: Hidehiko Ogasawara, Nozomu Ozaki, Seiji Wada, Toshiyuki Sekiya, Ken Hayakawa, Kazuo Haraoka, Shinji Sangawa, Masaaki Hattori, Naoki Kaneko, Tetsujiro Kondo
  • Patent number: 7872212
    Abstract: An integrated circuit is joined to a liquid container. The integrated circuit includes a passivation layer. A resistor is used as a heater to heat fluid in a liquid container. A mesa structure is formed over the passivation layer. The mesa structure is in contact with the resistor and is used to more effectively deliver heat from the resistor to the liquid container.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: January 18, 2011
    Assignee: Avago Technologies Fiber IP (Singapore) Pte. Ltd.
    Inventor: Tyler Sims
  • Patent number: 7856158
    Abstract: A virtual electronic switch system for a vehicle is provided. In one example, the system includes a switch assembly, a switch interface, and a computer. The switch assembly provides actuators that interface with non-contact sensors in the switch interface. The computer is coupled to the switch interface and assigns functions to each of the actuators. The non-contact sensors detect movement of the actuators and signal the computer, which manipulates an electrical system in the vehicle based on the assigned function.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: December 21, 2010
    Inventor: Claudio R. Ballard
  • Patent number: 7826697
    Abstract: A system and method of asymmetrical fiber or waveguide spacing comprising, in general, an asymmetrical fiber concentrator array (FCA), wherein an offset in the front face spacing of the output waveguides relative to the input waveguides functions to reduce or eliminate the introduction of static back reflection, and static in-to-in crosstalk into a fiber by an optical switch, but does not impose the cost, complexity, and insertion loss penalties brought about by additional components.
    Type: Grant
    Filed: August 19, 2008
    Date of Patent: November 2, 2010
    Assignee: Olympus Corporation
    Inventors: Harry W. Presley, Michael L. Nagy
  • Patent number: 7787720
    Abstract: An optical coupling device including: at least a first input port for delivering an optical input signal beam that includes a plurality of wavelength channels; at least a first optical output port for receiving an optical output signal beam; a wavelength dispersion element for spatially separating the plurality of wavelength channels in the optical input signal beam to form a plurality of spatially separated wavelength channel beams; an optical coupling device for independently modifying the phase of each of the spatially separated wavelength channel beams such that, for at least one wavelength channel beam, a selected fraction of the light is coupled to the first output port and a fraction of the light is coupled away from the first output port.
    Type: Grant
    Filed: September 27, 2004
    Date of Patent: August 31, 2010
    Assignee: Optium Australia PTY Limited
    Inventors: Steven James Frisken, Glenn Wayne Baxter, Hao Zhou, Dmitri Abakoumov
  • Publication number: 20100129025
    Abstract: A microelectromechanical systems device fabricated on a pre-patterned substrate having grooves formed therein. A lower electrode is deposited over the substrate and separated from an orthogonal upper electrode by a cavity. The upper electrode is configured to be movable to modulate light. A semi-reflective layer and a transparent material are formed over the movable upper electrode.
    Type: Application
    Filed: January 27, 2010
    Publication date: May 27, 2010
    Applicant: QUALCOMM MEMS TECHNOLOGIES, INC.
    Inventor: Clarence Chui
  • Patent number: 7720333
    Abstract: An optical module includes a fiber array, a laser diode array, a photodiode array and a micro-lens array. The fiber array includes optical fibers which are divided to a transmitter group and a receiver group. The laser diode array includes laser diodes which are grouped in a transmitter group. The photodiode array includes photodiodes which are divided to a monitor group and a receiver group. The laser diode array is provided between the fiber array and the photodiode array. The optical fibers of the transmitter group are optically aligned with the laser diodes of the transmitter group, respectively. The micro-lens array is provided between the laser diode array and the photodiode array, and optically aligns the laser diodes of the transmitter group and the optical fibers of the receiver group with the photodiodes of the monitor group and the photodiodes of the receiver group, respectively.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: May 18, 2010
    Assignee: Ibiden Co., Ltd.
    Inventors: Takemasa Tamanuki, Chris Keller
  • Publication number: 20100111471
    Abstract: An arrangement includes a photonic band-gap assembly comprising at least one input wave guide and at least one output wave guides, and at least one routing element responsive to signals to selectively route a signal from the input wave guide to one or more of the output wave guides.
    Type: Application
    Filed: October 30, 2009
    Publication date: May 6, 2010
    Inventors: Muriel Y. Ishikawa, Edward K.Y. Jung, Clarence T. Tegreene
  • Publication number: 20100092131
    Abstract: The present invention is directed to systems and methods that couple together optical devices in a manner that prevents damaging light from escaping the coupling except through the devices. In order to prevent damaging light from coming into contact with the user, the present invention obscures the source optical device by using at least one moveable gate to prevent damaging light from being transmitted outside of the coupling until such time as the target optical device is fully inserted into the coupling, thereby preventing light that could potentially damage a person from escaping the system except through the optical device.
    Type: Application
    Filed: October 14, 2008
    Publication date: April 15, 2010
    Applicant: Sonosite, Inc.
    Inventors: Daniel Davidson, Joseph E. Skidmore, Richard A. Fine
  • Patent number: 7680369
    Abstract: An optical beam steering arrangement, comprises: a moveable optical element; actuating means for causing the movement of said element; a connecting means between said element and said actuating means for transmitting movement from said actuating means to said element; and flexure means which carry said optical element and are compliant with the displacement of said optical element.
    Type: Grant
    Filed: May 19, 2005
    Date of Patent: March 16, 2010
    Assignee: Polatis Limited
    Inventors: Jonathan Horton James, Andrew Nicholas Dames
  • Patent number: 7668415
    Abstract: A MEMS-based display device is described, wherein an array of interferometric modulators are configured to reflect light through a transparent substrate. The transparent substrate is sealed to a backplate and the backplate may contain electronic circuitry fabricated on the backplane. The electronic circuitry is placed in electrical communication with the array of interferometric modulators and is configured to control the state of the array of interferometric modulators.
    Type: Grant
    Filed: March 25, 2005
    Date of Patent: February 23, 2010
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventor: Karen Tyger
  • Patent number: 7664345
    Abstract: A microelectromechanical systems device fabricated on a pre-patterned substrate having grooves formed therein. A lower electrode is deposited over the substrate and separated from an orthogonal upper electrode by a cavity. The upper electrode is configured to be movable to modulate light. A semi-reflective layer and a transparent material are formed over the movable upper electrode.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: February 16, 2010
    Assignee: Qualcomm Mems Technologies, Inc.
    Inventor: Clarence Chui
  • Patent number: 7656568
    Abstract: Embodiments of the present invention provide structures for microelectromechanical systems (MEMS) that can be sensed, activated, controlled or otherwise addressed or made to respond by the application of forcing functions. In particular, an optical shutter structure suitable for use in an optical switch arrangement is disclosed. In one embodiment, an optical shutter or switch can be scaled and/or arranged to form arbitrary switch, multiplexer and/or demultiplexer configurations. In another embodiment of the present invention, an optical switch can include: a shutter; and a flexure coupled to the shutter, whereupon a vibration transmitted to the flexure when in the presence of a resonant frequency causes the shutter to move across an opening for the passage of an optical signal.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: February 2, 2010
    Assignee: The Regents of the University of California
    Inventors: Hyuck Choo, Richard S. Muller
  • Patent number: 7639910
    Abstract: An optical module is configured with a combination of a single-mode oscillating light source and an optical filter. In this optical module, the single-mode oscillating light source outputs a single-mode, frequency-modulated signal. Further, the optical filter converts the frequency modulation to an amplitude modulation. And, the single-mode oscillating light source and the optical filter are packaged without active alignment on the same substrate. Accordingly, it is possible to realize an optical module in a simple and low-cost configuration by packaging the single-mode oscillating light source and the optical filter by passive alignment, without active alignment, on the same substrate, and by using a simple optical filter such as a waveguide ring resonator, which converts a frequency modulation to an amplitude modulation.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: December 29, 2009
    Assignee: NEC Corporation
    Inventors: Hiroyuki Yamazaki, Takaaki Hatanaka
  • Publication number: 20090274416
    Abstract: A virtual electronic switch system for a vehicle is provided. In one example, the system includes a switch assembly, a switch interface, and a computer. The switch assembly provides actuators that interface with non-contact sensors in the switch interface. The computer is coupled to the switch interface and assigns functions to each of the actuators. The non-contact sensors detect movement of the actuators and signal the computer, which manipulates an electrical system in the vehicle based on the assigned function.
    Type: Application
    Filed: March 5, 2009
    Publication date: November 5, 2009
    Inventor: CLAUDIO R. BALLARD
  • Patent number: 7587104
    Abstract: A microelectromechanical systems device fabricated on a pre-patterned substrate having grooves formed therein. A lower electrode is deposited over the substrate and separated by an orthogonal upper electrode by a cavity. The upper electrode is configured to be movable to modulate light.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: September 8, 2009
    Assignee: IDC, LLC
    Inventor: Clarence Chui
  • Patent number: 7574081
    Abstract: The present invention provides an optical system with waveguides, which comprises first, second and third optical input/output means (12, 14, 16), fourth and fifth multi-mode optical waveguides (20, 22) each capable of propagating light with plural propagation modes, and optical-filter mounting means (26) for mounting an optical filter (24) between the fourth and fifth multi-mode optical waveguides (20, 22) across a traveling direction of light in the fourth and fifth multi-mode optical waveguides (20, 22). The first optical input/output means (12) is connected to an end face of the fourth multi-mode optical waveguide (20) on a side thereof opposite to the optical-filter mounting means (26). Each of the second and third optical input/output means (14, 16) is connected to an end face of the fifth multi-mode optical waveguide (22) on a side opposite to the optical-filter mounting means (26).
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: August 11, 2009
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Nobuo Miyadera, Rei Yamamoto
  • Patent number: 7570847
    Abstract: A method of forming an optical switch is disclosed. The optical switch is implemented with one or more cantilevered optical channels, which are formed in a flexible waveguide structure, and an actuator which is connected to the cantilevered optical channels, to position the cantilevered optical channels to direct an optical signal along one of a number of optical pathways.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: August 4, 2009
    Assignee: National Semiconductor Corporation
    Inventors: Trevor Niblock, Gerard Dirk Smits
  • Patent number: 7570848
    Abstract: An optical switch includes plural pairs of ports and first lenses, each of the ports emitting light in a diffused manner or receiving light input thereto in a collected manner, and the first lenses respectively collimating light emitted from the ports; a second lens that collects the light collimated by the first lenses; and an inclinable mirror that reflects the light collected by the second lens at different angles toward the second lens. A position of a first lens is adjusted based on a first distance between a core of the second lens and a portion of the second lens through which light collimated by the first lens passes.
    Type: Grant
    Filed: November 26, 2007
    Date of Patent: August 4, 2009
    Assignee: Fujitsu Limited
    Inventors: Hideo Okada, Shinichi Wakana
  • Patent number: 7559703
    Abstract: An optical module includes a fiber array, a laser diode array, a photodiode array and a micro-lens array. The fiber array includes optical fibers which are divided to a transmitter group and a receiver group. The laser diode array includes laser diodes which are grouped in a transmitter group. The photodiode array includes photodiodes which are divided to a monitor group and a receiver group. The laser diode array is provided between the fiber array and the photodiode array. The optical fibers of the transmitter group are optically aligned with the laser diodes of the transmitter group, respectively. The micro-lens array is provided between the laser diode array and the photodiode array, and optically aligns the laser diodes of the transmitter group and the optical fibers of the receiver group with the photodiodes of the monitor group and the photodiodes of the receiver group, respectively.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: July 14, 2009
    Assignee: Ibiden Co., Ltd.
    Inventors: Takemasa Tamanuki, Chris Keller
  • Patent number: 7551813
    Abstract: Simplified and insensitive to ambient condition mechanical bi-directional fiber-optic switch that can work in fire and explosion hazardous environment. The switch houses a sensitive element—a length of single-mode optic fiber and a bending device, which being activated provides specific bending of the optic fiber that introduces high attenuation of an optic signal so completely terminating light signal transmission. The switch can be configured as single on/off switch or multi-channel one.
    Type: Grant
    Filed: November 18, 2007
    Date of Patent: June 23, 2009
    Inventor: Gennadii Ivtsenkov
  • Patent number: 7539371
    Abstract: A micromirror for use in an optical apparatus may comprise a reflective portion, configured to be rotatable about a switching axis and an attenuation axis that is different from the switching axis. The reflective portion may include an edge that is substantially parallel to the attenuation axis. The edge may include one or more edge features that protrude above a plane of the micromirror surface and/or are submerged below the plane of the micromirror surface, and/or have an edge shape that deviates from a straight line. Alternatively, an array of micromirrors may have mirrors characterized by sawtooth features disposed along edges that are substantially parallel to the attenuation axis.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: May 26, 2009
    Assignee: Capella Photonics, Inc.
    Inventors: Massimo Martinelli, Long Yang, Mark H. Garrett, Robert Ostrom, Joseph E. Davis