Light Wave Temporal Modulation (e.g., Frequency, Amplitude, Etc.) Patents (Class 359/238)
  • Patent number: 11211761
    Abstract: A laser beam steering device and a system including the laser beam steering device are provided. The laser beam steering device includes a refractive index change layer having a refractive index that changes based on an electrical signal; at least one antenna pattern disposed above the refractive index change layer; a wavelength selection layer disposed under the refractive index change layer and configured to correspond to a wavelength of a laser beam incident onto the laser beam steering device; and a driver configured to apply the electrical signal to the refractive index change layer.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: December 28, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sunil Kim, Duhyun Lee, Changbum Lee, Byounglyong Choi
  • Patent number: 11171724
    Abstract: Light-based deciphering and transmission of information from one remote party to another in line-of-sight is disclosed. The system speeds the pace of light-based transmissions, the decoding of transmissions, and improves the accuracy of reception of the transmissions. In certain embodiments, the system sends both visual and infrared light to send different types of information to the recipient or to send information under different conditions. Exemplary embodiments disclosed herein demonstrate three exemplary systems (mechanical, LCD, and LED) that are suitable for combination with the other components of the system as disclosed herein. In certain embodiments, the system is configured to focus on the correct light (when there are other lights in view) sending the code (e.g., Morse code or On-Off Keying) and track it.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: November 9, 2021
    Assignee: Marsupial Holdinds, Inc.
    Inventors: William P. Parker, Jessica Lindle, Eric Gallo, Michael Strauss, Andrew Johnson
  • Patent number: 11165680
    Abstract: A method includes monitoring a media stream that is streamed over a network at a given media bit-rate in a sequence of traffic bursts. Respective data volumes of one or more traffic bursts of the sequence are estimated, and the given media bit-rate is derived from the estimated data volumes.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: November 2, 2021
    Assignee: Vasona Networks, Inc.
    Inventors: Roni Bar-Yanai, Nery Strasman
  • Patent number: 11153545
    Abstract: A projection device includes an illumination system, a light valve, and a projection lens. The illumination system includes a light source, a lens array, a condenser lens, and a wavelength conversion element. The light source is for providing a light beam. The lens array and the condenser lens are disposed on a transmission path of a light beam. The condenser lens is for receiving the light beam passing through the lens array and converting the light beam into a condenser light beam. The wavelength conversion element is for receiving the condenser light beam and converting at least a portion thereof into a converted light beam. The projection device and the illumination system provided by the invention can effectively improve the conversion efficiency of the wavelength conversion element and prevent the wavelength conversion element from damage, and effectively project the converted light beam generated by the wavelength conversion element.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: October 19, 2021
    Assignee: Coretronic Corporation
    Inventors: Haw-Woei Pan, Chih-Hsien Tsai
  • Patent number: 11143870
    Abstract: A display apparatus that enhances a response speed while suppressing reduction in durability even when the transmittance control is performed. The display apparatus includes a display, a plurality of light adjustment devices, and a controller. The display is configured to be attached to a head of a user to display information to the user. Each of the plurality of light adjustment devices is configured to change a transmittance to adjust an intensity of light incident from outside. The controller is configured to independently control the transmittances of the plurality of light adjustment devices separately from each other.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: October 12, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Norikazu Igarashi, Shigenobu Hirano, Yasuo Katano, Kenji Kameyama, Takashi Maki, Yuuto Gotoh, Satomi Tanaka, Shiroh Ikegami, Ikue Kawashima, Qing Liang
  • Patent number: 11099411
    Abstract: The present disclosure relates a privacy film and a display device including the privacy film. More specifically, by including a light collector including a plurality of first light blocking patterns arranged to be spaced apart from one another, an adhesive layer disposed on the light collector and having at least one first groove in at least a part overlapping the plurality of first light blocking patterns, and a light diffuser disposed on the adhesive layer and including a plurality of capsules, the privacy film and the display device including the privacy film can prevent light discharge efficiency of the privacy film from being degraded and be easily reworked.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: August 24, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Sooyoun Kim, SeokHo Lee, Seong-Il Kim
  • Patent number: 11092672
    Abstract: An optical scanning device includes a light source configured to emit first light in a first wavelength range and second light in a second wavelength range, a beam divider configured to allow the first light to travel in a first direction, and receive the second light, and allow the second light to travel in a second direction different from the first direction, a first optical modulator configured to receive the first light, and modulate a phase of the first light received by the first optical modulator to change a travelling direction of the first light received by the first optical modulator, and a second optical modulator configured to receive the second light, and modulate a phase of the second light received by the second optical modulator to change a travelling direction of the second light received by the second optical modulator.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: August 17, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byunggil Jeong, Jaeduck Jang, Duhyun Lee
  • Patent number: 11067733
    Abstract: A waveguide display element includes waveguide layers stacked on top of each other and an in-coupler associated with each waveguide layer for coupling light within a predefined wavelength band into the waveguide layer. Each of the in-couplers includes an intermediate layer arranged on the waveguide layer, the intermediate layer having intermediate layer properties. Each of the in-couplers further includes an in-coupling grating arranged on the intermediate layer, the grating having grating properties. The combination of the intermediate layer properties and grating properties of each in-coupler is different with respect to other in-couplers.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: July 20, 2021
    Assignee: DISPELIX OY
    Inventors: Juuso Olkkonen, Kasimir Blomstedt
  • Patent number: 11043783
    Abstract: The invention relates to an optical arrangement having a division element which divides an input beam consisting of a sequence of temporally equidistant light pulses into two spatially separate partial beams, at least one optical element through which at least one of the partial beams propagates, and at least one combination element which spatially superimposes the partial beams in an output beam. It is the object of the present invention to show a method for increasing the pulse energy of light pulses which is improved in comparison with the prior art. The invention solves this problem by virtue of the fact that the combination element superimposes a number of the temporally successive light pulses in a single light pulse in the output beam. The invention also relates to a method for increasing the pulse energy of light pulses.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: June 22, 2021
    Assignees: Fraunhoer-Gesellschaft zur Förderung der angewandten Forschung e.V., Friedrich-Schiller-Universität Jena
    Inventors: Michael Müller, Marco Kienel, Arno Klenke, Jens Limpert, Andreas Tünnermann
  • Patent number: 10976542
    Abstract: Aspects of the present disclosure describe systems, methods, and structures for aberration correction of optical phased arrays that employ a corrective optical path difference (OPD) in the near-field of an OPA to correct or cancel out aberrations in emitted beams of the OPA including those reaching far-field distances by generating a spatially-varying OPD across the aperture of the OPA that is substantially equal and opposite to an equivalent OPD of the aberration(s).
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: April 13, 2021
    Assignee: Analog Photonics LLC
    Inventors: Peter Nicholas Russo, Ehsan Hosseini, Christopher Poulton, Erman Timurdogan, Diedrik Vermeulen, Michael Robert Watts, Michael Whitson
  • Patent number: 10967452
    Abstract: A device for measuring the depth of a weld seam in real time during the welding or joining of a workpiece by means of radiation, including: its measuring light source, the light of which is coupled by a beam splitter into a reference arm and a measuring arm; a collimator module having at least one collimation lens for collimating a measuring light beam, which is fed to the collimator module via an optical waveguide in the measuring arm, and for imaging the measuring light beam, which is reflected from a workpiece to be processed, on an exit/entry surface of the optical waveguide; a coupling element for coupling the measuring light beam into the beam path of a processing beam; a focusing lens for the joint focusing of the measuring light beam and the processing beam on the workpiece and for the collimating of the reflected measuring light beam; and an analysis unit for determining the depth of a weld seam, into which the measuring light reflected from the workpiece is guided with the superimposed, reflected li
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: April 6, 2021
    Assignee: PRECITEC GMBH & CO.KG
    Inventors: Rudiger Moser, Thibault Bautze, Martin Schonleber
  • Patent number: 10901310
    Abstract: Aspects of the present disclosure relate to a device for active depth sensing with an adjustable distribution of light projected. An example device includes a light projector. The light projector includes a light source configured to emit a light and a diffractive element. The diffractive element includes a first diffractive optical element having a first refractive index and configured to project a first distribution of light, a second diffractive optical element having a second refractive index and configured to project a second distribution of light based on a refractive material between the first diffractive optical element and the second diffractive optical element, and the refractive material located between the first diffractive optical element and the second optical element. The refractive material is adjustable to have a second refractive index for the first mode and a third refractive index for the second mode.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: January 26, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Jian Ma, Sergiu Goma
  • Patent number: 10871583
    Abstract: Instruments used to analyze the chemical composition of samples must be calibrated to provide accurate results. Typically, standards are prepared that contain a known amount of the intended analyte to facilitate calibration of the analytical instrument. Various environmental issues are associated with use of mercury containing materials as standards for calibration of analytical instruments. Mercury and gold have very similar characteristic X-ray energies. Standards containing gold nanoparticles have been found to be a good surrogate for mercury in X-ray spectroscopy.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: December 22, 2020
    Assignee: University of Louisiana at Lafayette
    Inventor: Harry James Whitlow
  • Patent number: 10854769
    Abstract: Disclosed is an active photonic device having a Darlington configuration with a substrate and a collector layer that is over the substrate. The collector layer includes an inner collector region. An outer collector region substantially surrounds the inner collector region and is spaced apart from the inner collector region. A base layer is over the collector layer. A first outer base region and a second outer base region substantially surround the inner base region and are spaced apart from the inner base region and each other. An emitter layer is over the base layer. The emitter layer includes an inner emitter region that is ring-shaped and resides over and extends substantially around an outer periphery of the inner base region. A first outer emitter region and a second outer emitter region substantially surround the inner emitter region and are spaced apart from the inner emitter region and each other.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: December 1, 2020
    Assignee: Qorvo US, Inc.
    Inventor: Kevin Wesley Kobayashi
  • Patent number: 10850667
    Abstract: An interior rearview mirror assembly for a vehicle includes a mirror casing and an electro-optic reflective element assembly disposed at the mirror casing. The front substrate of the reflective element has a first surface and a second surface and a perimeter edge between the first and second surfaces. The second surface of the front substrate has a transparent conductive coating established thereat. The rear substrate of the reflective element has a third surface and a fourth surface and a perimeter edge between the third and fourth surfaces. The third surface of the rear substrate has a conductive coating established thereat. With the electro-optic reflective element assembly disposed at the mirror casing, the perimeter edges of both the front and rear substrates are exterior the mirror casing and provide a curved transition between the first surface of the front substrate and an outer surface of the mirror casing.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: December 1, 2020
    Assignee: MAGNA MIRRORS OF AMERICA
    Inventor: Michael J. Baur
  • Patent number: 10838129
    Abstract: The present disclosure provides a system and method for an ultrathin optical metasurface with an array patterning formed on an optical fiber facet that enables manipulation of light passing therethrough, such as focusing and steering the light, and controlling a polarization state of light. The patterning can be non-uniform to selectively direct light passing through the metasurface. Array structures can vary in size, angle, shapes, and other non-uniform aspects. Further, the array can include materials that can be electrically activated and controlled to variably tune the metasurface characteristics for increased ability to manipulate the light passing therethrough. The materials can include a conductor, a dielectric, or a composite of a conductor, insulator, and dielectric formed on the optical fiber.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: November 17, 2020
    Assignee: Baylor University
    Inventors: Ho Wai Howard Lee, Jingyi Yang, Indra Ghimire
  • Patent number: 10840594
    Abstract: Disclosed is a beam steering device capable of adjusting a reflection angle of incident light and reflecting the incident light to a desired location. Also disclosed is an optical apparatus configured to detect light reflected from an external object and to extract information with respect to the external object. The beam steering device includes: a substrate; an antenna layer disposed on the substrate; a dielectric layer covering the antenna layer; a refractive index changing layer disposed on the dielectric layer; and an electrode layer disposed on the refractive index changing layer.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: November 17, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dongsik Shim, Byunggil Jeong, Junghyun Park, Byounglyong Choi
  • Patent number: 10802382
    Abstract: Aspects of the present disclosure relate to an adjustable light projector for active depth sensing and flood illumination. An example device includes a light projector that includes a light source to emit a light along a first direction and a diffractive element positioned in a path of the emitted light along the first direction. The diffractive element includes a diffractive optical element having a first refractive index and configured to project a distribution of focused light from the emitted light during a first mode. The diffractive element also includes a diffusion element having a second refractive index and configured to diffuse the emitted light during a second mode.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: October 13, 2020
    Assignee: Qualcomm Incorporated
    Inventors: Jian Ma, Sergiu Goma
  • Patent number: 10760970
    Abstract: A circular dichroism spectrometer which comprises a metasurface. The metasurface has a plurality of anisotropic antennas configured to simultaneously spatially separate LCP and RCP spectral components from an incoming light beam. An optical detector array is included which detects the LCP and RCP spectral components. A transparent medium is situated between the metasurface and the optical detector array.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: September 1, 2020
    Assignee: Purdue Research Foundation
    Inventors: Amr Mohammad E Shaltout, Alexander Kildishev, Vladimir Shalaev, Jingjing Liu
  • Patent number: 10729398
    Abstract: An X-ray phase contrast imaging device of the present invention can change an arrangement pitch of slits related to a multi-slit and an arrangement pitch of phase shift sections related to a phase grating. A positional relationship among the multi-slit 3b, the phase grating, and an FPD is determined based on the arrangement pitch of the slits related to the multi-slit, the arrangement pitch of the phase shift sections related to the phase grating, and an arrangement pitch of detection elements related to the FPD. Among these arrangement pitches, by changing the arrangement pitch of the slits and the arrangement pitch of the phase shift sections, the present invention can change the positional relationship among the multi-slit, the phase grating, and the FPD.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: August 4, 2020
    Assignees: Shimadzu Corporation, Osaka University
    Inventors: Satoshi Sano, Koichi Tanabe, Toshinori Yoshimuta, Kenji Kimura, Hiroyuki Kishihara, Yukihisa Wada, Takuro Izumi, Taro Shirai, Takahiro Doki, Akira Horiba, Takayoshi Shimura, Heiji Watanabe, Takuji Hosoi
  • Patent number: 10698265
    Abstract: A quantum dot film includes a plurality of sealed microcells. The microcells may be formed within a layer of polymeric material and sealed with a sealing material. Also, the microcells may contain a dispersion of a solvent and a plurality of quantum dots. A method of making a quantum dot film includes providing a layer of polymeric material having a plurality of open microcells, filling the plurality of open microcells with a dispersion of a solvent and plurality of quantum dots, and sealing the microcells.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: June 30, 2020
    Assignee: E Ink California, LLC
    Inventor: Chet Steinhagen
  • Patent number: 10649124
    Abstract: A polymerizable composition of the present invention has favorable solubility, and an optically anisotropic body using the polymerizable composition is unlikely to discolor and is excellent in heat resistance and light resistance. The problem to be solved by the present invention is to provide a polymer obtained by polymerizing the polymerizable composition and an optically anisotropic body using the polymer. The present invention relates to a polymerizable composition which includes a compound having at least one mesogenic group and satisfying an expression represented by Expression (1), and which satisfies an expression represented by Expression (2). 0.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: May 12, 2020
    Assignee: DIC CORPORATION
    Inventors: Mika Takasaki, Masahiro Horiguchi, Yasuhiro Kuwana
  • Patent number: 10574019
    Abstract: A method for controlling the speed of a laser pulse includes a step of applying a chirp to the pulse; and a step of focusing the pulse by means of an optical system having a longitudinal chromatic aberration; whereby an intensity peak of the pulse moves along a propagation axis following, over a finite propagation length, a speed profile dependent on the chirp and on the longitudinal chromatic aberration. The use of such a method for accelerating particles via laser, and a system for implementing such a method, are also provided.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: February 25, 2020
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Fabien Quere
  • Patent number: 10547388
    Abstract: An optical transmitter includes an optical modulator including a first modulator, a second modulator, and a phase shifter that provides a predetermined optical phase difference between the first modulator and the second modulator, a light source that makes light enter the optical modulator, and a voltage controller that detects a distortion of light power characteristics from output light of the optical modulator in a state where no data signal is input to the optical modulator to determine a bias voltage to be set in the optical modulator while reducing the distortion.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: January 28, 2020
    Assignee: FUJITSU LIMITED
    Inventor: Katsuhiro Ikeda
  • Patent number: 10545336
    Abstract: A transparent display for a vehicle that includes a self-emissive display with an electronically adjustable brightness and a masking display with an electronically adjustable absorption. The masking display is arranged back-to-back with the self-emissive display. At least one light sensor that is arranged in proximity to the masking display. A display controller is connected to the self-emissive display, to the masking display and to the at least one light sensor. The display controller is operative to adapt an absorption of the masking display in response to a signal of the at least one light sensor.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: January 28, 2020
    Assignee: Continental Automotive GmbH
    Inventors: Arvind Dubey, Ki Hyun Lyu
  • Patent number: 10444417
    Abstract: Various techniques provide optical limiters for facilitating aperture protection. In one example, a system includes an optical device. The optical device includes a photocathode configured to emit electrons in response to an applied voltage and an incident light. The optical device further includes a phase change material. At least a portion of the phase change material is configured to receive the electrons from the photocathode. The portion is further configured to transition from a first phase to a second phase in response to the electrons. The portion is further configured to reflect the incident light when the portion of the phase change material is in the second phase. Related methods and products are also provided.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: October 15, 2019
    Assignee: THE BOEING COMPANY
    Inventor: Tai Anh Lam
  • Patent number: 10284295
    Abstract: The disclosure is directed to a radio over fiber (RoF) network node, base station, and communication system. In one of the exemplary embodiments, the disclosure is directed to a radio over fiber (RoF) network node which includes not limited to: a laser source which transmits a first laser beam having a first wavelength; a first Electroabsorption Modulated Laser (EML) which modulates a first electrical signal into a second laser beam that is modulated and has a second wavelength; and a first optical coupler which is coupled to the laser source and the EML and transmits an output laser beam having a first carrier frequency which is determined based on a difference between the first wavelength and the second wavelength.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: May 7, 2019
    Assignee: Industrial Technology Research Institute
    Inventor: Che-Hao Li
  • Patent number: 10261372
    Abstract: The present application provides a manufacture method of an array substrate, wherein the manufacture method comprises providing a substrate; sequentially forming a planarization layer, a first common electrode layer and a first insulation layer on the substrate; forming a metal line layer on the first insulation layer; depositing a second insulation layer on a second metal layer and the first insulation layer; forming a plurality of through holes in the second insulation layer; forming a second common electrode layer on the second insulation layer which is formed with the through holes. The present application further provides a liquid crystal panel and a liquid crystal display screen.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: April 16, 2019
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd
    Inventors: Chunqian Zhang, Caiqin Chen
  • Patent number: 10216014
    Abstract: An electrical line arrangement, comprising a first and a second electrical line forming a coplanar strip line and at least one terminating resistor terminating the first and the second electrical line, is provided. In a first region of the electrical line arrangement the first and the second electrical line extend in a first distance from one another and in a second region of the electrical line arrangement the first and the second electrical line extend in a second distance from one another that is larger than the first distance. The terminating resistor is physically arranged at a position between the first and the second electrical line in the second region of the electrical line arrangement. At least one electrically conductive structure is arranged between the first and the second electrical line at least partially in the second region of the electrical line arrangement.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: February 26, 2019
    Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: Karl-Otto Velthaus, Marko Rausch
  • Patent number: 10198038
    Abstract: A foldable display device includes a display panel including a first surface and a second surface opposite to the first surface; and an impact absorption film adjacent to the second surface of the display panel and including first and second impact absorption layers. The second impact absorption layer includes a soft part corresponding to a first region of the second impact absorption layer and a hard part corresponding to a second region of the second impact absorption layer. The first impact absorption layer and the soft part of the second impact absorption layer have an elastic modulus value less than an elastic modulus value of the hard part.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: February 5, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Se-Jin Jang, Noh-Jin Myung, Byoung-Har Hwang, Sang-Wook Woo, Tae-Hyoung Kwak
  • Patent number: 10191307
    Abstract: To provide a modulation control method and an optical transmission device that realize high reliability by more stably performing bias control of an optical modulator using an optical QAM scheme, an optical transmitter according to the present invention comprises a first waveguide and a second waveguide, wherein each of the first waveguide and the second waveguide are provided with an optical modulator that modulates a carrier light with a modulation driving signal that has multiple strength level values, a phase shift unit that provides a predetermined phase difference between a first optical signal outputted from the first waveguide and a second optical signal outputted from the second waveguide, a light detector that detects and photoelectrically converts a portion of a multiple value optical signal obtained by multiplexing the first optical signal and the second optical signal which have been provided with the phase difference and a control circuit that, on the basis of signal amplitude information obtain
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: January 29, 2019
    Assignee: NEC CORPORATION
    Inventors: Sadao Fujita, Emmanuel Le Taillandier De Gabory
  • Patent number: 10168596
    Abstract: A multi-section optical modulator and related method wherein two waveguide arms traverse a plurality of successive modulating sections. A differential drive signal is applied separately to each waveguide arm of each modulating sections in synchronism with the transmission of light along the waveguide arms, effecting a dual differential driving of each section. By suitably selecting the number of modulating sections and the section length, a high modulation bandwidth and a high modulation efficiency may be achieved simultaneously for a given peak-to-peak voltage swing of the drive signal.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: January 1, 2019
    Assignee: Elenion Technoogies, LLC
    Inventors: Christopher Williams, Mostafa Ahmed, Alexander Rylyakov, Richard C. Younce, Yang Liu, Ran Ding, Abdelrahman Ahmed
  • Patent number: 10161797
    Abstract: A circular dichroism spectrometer which comprises a metasurface. The metasurface has a plurality of anisotropic antennas configured to simultaneously spatially separate LCP and RCP spectral components from an incoming light beam. An optical detector array is included which detects the LCP and RCP spectral components. A transparent medium is situated between the metasurface and the optical detector array.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: December 25, 2018
    Assignee: PURDUE RESEARCH FOUNDATION
    Inventors: Amr Shaltout, Alexander Kildishev, Vladimir Shalaev, Jingjing Liu
  • Patent number: 10074320
    Abstract: A display device includes a first support plate and an opposing second support plate. A plurality of pixel regions is formed between the first support plate and the second support plate. Each pixel region includes a plurality of sub-pixel regions. A plurality of pixel wall portions over the first support plate form a perimeter of each of the plurality of sub-pixel regions. A sub-pixel region spacer is positioned in a first sub-pixel region of the plurality of sub-pixel regions. The sub-pixel region spacer includes a first spacer portion in the first sub-pixel region having a first landing surface extending between the plurality of pixel wall portions forming the perimeter of the first sub-pixel region. A second spacer portion of the sub-pixel region spacer extends from the second support plate in the first pixel region and is coupled to the first spacer portion.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: September 11, 2018
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: Anthony Botzas, Robert Waverly Zehner, Gerben Boon
  • Patent number: 10076018
    Abstract: A discharge lamp driving device includes a discharge lamp driving unit; and a control unit, in which the control unit controls the discharge lamp driving unit so that a first driving current which causes a first electrode to serve as an anode and a second driving current which causes a second electrode to serve as an anode are alternately supplied to the discharge lamp, a period of the first driving current is changed according to a periodic first pattern, and a period of the second driving current is changed according to a periodic second pattern, in which the first pattern and the second pattern are patterns in which the length of the periods over which the respective driving current is supplied decrease over time within each cycle of the pattern, and in which the cycle of the first pattern is phase-shifted relative to the cycle of the second pattern.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: September 11, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Masaru Kono
  • Patent number: 10063922
    Abstract: Described embodiments include a system that includes a network interface and a processor. The processor is configured to monitor, via the network interface, a streaming of an encrypted video stream, in a sequence of traffic bursts, from a video server to a user terminal, and, based on the monitoring, and without decrypting the video stream, to estimate a bit rate at which the video stream was streamed, and to estimate, using the estimated bit rate, a performance metric of the video stream. Other embodiments are also described.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: August 28, 2018
    Assignee: Vasona Networks Inc.
    Inventors: Roni Bar Yanai, Uri Bechar, Alex Shapilov
  • Patent number: 10042190
    Abstract: A Dual Parallel (DP)-Inphase/Quadrature (I/Q) Mach-Zehnder Modulator (MZM) bias controller configured to generate a pair of orthogonal dither signals; multiply the pair of dither signals to create a second order orthogonal dither signal; and lock an Inphase (I) I MZM of a DP-I/Q MZM to a value of a corresponding I component of a transmission signal by applying the pair of orthogonal dither signal to a Quadrature (Q) MZM and a Phase (P) MZM of the DP-I/Q MZM; applying an I bias signal to the I MZM of the DP-I/Q MZM; detecting an output of the DP-I/Q MZM; and determining an I error signal in the output of the I MZM of the DP-I/Q MZM based on the product of second order dither signal and the output of the DP-I/Q MZM.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: August 7, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Tiangong Liu, Hongbing Lei, Xiao Shen
  • Patent number: 10042192
    Abstract: Methods, apparatus, and systems are provided including an electro-absorption modulator (EAM) with local temperature control for optical communication. One aspect provides an optical EAM including a semiconductor portion configured to modulate light for transmission or reception of an optical signal. The modulator includes a temperature sensing element configured to sense temperature and to provide an output signal based on the sensed temperature, and a temperature control element configured to control temperature of the semiconductor portion based on the output signal from the temperature sensing element. In one example, the semiconductor portion includes germanium silicon (GeSi).
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: August 7, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Yan Cai, YuSheng Bai, Hongbing Lei, Xiao Andy Shen
  • Patent number: 9991678
    Abstract: An optical system, such as a fiber laser amplifier, including a plurality of optical sources, such as fiber amplifiers, each generating a beam. In one embodiment, the system includes first and second diffraction gratings that correct the angle of the propagation direction of the beams to remove angular dispersion caused by a diffractive optical element (DOE). In another embodiment, the system includes a single diffraction grating, where the optical beams pass through the grating twice to also remove the angular dispersion caused by the DOE.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: June 5, 2018
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Peter A. Thielen, William H. Long, Jr., Eric C. Cheung, Gregory D. Goodno
  • Patent number: 9906305
    Abstract: An optical signal transmitter produces optical signals comprising QAM modulated vector signals generated using a single external electro-optical modulator operated in conjunction with a wavelength selective switch. The transmission processing achieves adaptive photonic frequency multiplication and comprises QAM modulated signals with high order constellations such as 8-QAM, 16-QAM, and 64-QAM.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: February 27, 2018
    Assignee: ZTE Corporation
    Inventors: Jianjun Yu, Xinying Li
  • Patent number: 9885884
    Abstract: An optical system having a transmission pattern comprising at least a first zone Z1 extending from at or about 380 nm to a first limit L1 between Z1, and a second zone Z2. A third zone Z3 extends from a second limit L2 between Z2 and Z3 to about 780 nm. L1 may be greater than or equal to or about 436 nm. Second limit L2 may be greater than L1 and smaller than or equal to or about 487 nm. The average transmission values T1, T2, T3, in each zone Z1, Z2, Z3 may be: T2>5*(T1+T3)/2, with T1 the average transmission over Z1, T2 the average transmission over Z2, T3 the average transmission over Z3. T1 and T3 may be greater than or equal to or about 3% and smaller than or equal to or about 70%. T2 may be greater than or equal to or about 75%.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: February 6, 2018
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventor: Bjorn Drobe
  • Patent number: 9857660
    Abstract: An Optical Information Transfer Enhancer System includes a first system for producing an information bearing first optical wave that is impressed with a first information having a first information strength wherein the first optical wave has a first shape. A second system produces a second optical wave. An information strength enhancer module receives the first and said second optical waves and impresses the first optical wave upon the second optical wave via cross-phase modulation (XPM) to produce an information-strength-enhanced second optical wave having a second information strength that is greater than the first information strength of the first optical wave. Following a center-wavelength changer by an Optical Information Transfer Enhancer System improves its performance.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: January 2, 2018
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Peter Thomas Setsuda DeVore, Jason T. Chou
  • Patent number: 9859984
    Abstract: A transmitter comprises a complex mixer to generate a single I analog drive signal and a single Q analog drive signal, and a single multi-dimensional optical modulator configured to modulate an optical carrier light using the single I analog drive signal and the single Q analog drive signal to produce a modulated optical signal for transmission. Alternatively, a transmitter comprises a complex mixer to generate two I analog drive signals and two Q analog drive signals, and a single multi-dimensional multiple-electrode optical modulator configured to modulate an optical carrier light using the analog drive signals to produce a modulated optical signal for transmission. In both transmitters, the optical carrier light is produced by a single laser, and frequency components of the first data signal are located in a different portion of a spectrum of the modulated optical signal than frequency components of the second data signal.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: January 2, 2018
    Assignee: Ciena Corporation
    Inventors: James Harley, Roger Carroll, Shahab Oveis Gharan, Kim B. Roberts
  • Patent number: 9835928
    Abstract: A technique for tuning a silicon photonics (SiP) based nested (parent/child) Mach-Zehnder modulator (MZM). The technique includes a sequence of applying dither tones on individual arms of the child MZMs, observing changes in the output of the MZM, and adjusting the MZM until reaching the null points for the child MZMs and the quad point for the parent MZM.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: December 5, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Jinxi Shen, Zhong Shi, Na Shan
  • Patent number: 9810910
    Abstract: A contact lens includes a transparent material, a substrate material, a light source, an optical system, and a phase map. The transparent material has an eye-side opposite an external side. The eye-side is curved to fit the human eye. The light source is configured to emit illumination light. The optical system is configured to receive the illumination light from the light source and output the illumination light as an in-phase wavefront. The phase map is configured to adjust a phase of the in-phase wavefront to form an image at a retina-distance in response to being illuminated by the in-phase wavefront. The phase map is pre-recorded with a phase pattern that is included in the image.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: November 7, 2017
    Assignee: Verily Life Sciences LLC
    Inventors: Sohyun Park, Igor Landau
  • Patent number: 9740078
    Abstract: Disclosed is a device which constitutes a photonic phased array antenna. The device includes at least one light source, an optical power distributor configured to distribute a light wave generating from the light source, a phase controller configured a phase of the light wave, and a light wave radiator configured to radiate the light wave into a space based on the controlled phase. Optical waveguides are connected between the light source and the optical power distributor, between the optical power distributor and the phase controller and between the phase controller and the light wave radiator, respectively.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: August 22, 2017
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Hyo Hoon Park, Jong Hun Kim, Sun Kyu Han
  • Patent number: 9628186
    Abstract: Disclosed are adaptive structures and methods for generating advanced modulation formats using multiple levels such as PAM-4, PAM-8 as well as regular OOK or PM OOK formats. Structures and methods disclosed include an unequal power splitter that may exhibit a fixed or tunable splitting ratio such that adaptive format(s) may be generated.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: April 18, 2017
    Assignee: Acacia Communications, Inc.
    Inventor: Diedrik Vermeulen
  • Patent number: 9575002
    Abstract: The number of stimulated spots and/or the area of a stimulated spot is easily increased or decreased while keeping the irradiation power for each stimulated spot constant.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: February 21, 2017
    Assignee: OLYMPUS CORPORATION
    Inventor: Yasunari Matsukawa
  • Patent number: 9550457
    Abstract: An electro-optic assembly is provided that includes a first substantially transparent substrate comprising: a first surface, a second surface, and a first peripheral edge, the second surface comprises a first electrically conductive layer and a first isolation area. The assembly further includes a second substrate comprising: a third surface, a fourth surface, and a second peripheral edge, the third surface comprises a second electrically conductive layer. The assembly also includes a primary seal between the second and third surfaces, wherein the seal and the second and third surfaces define a substantially hermetic cavity; an electro-optic medium at least partially disposed in the cavity; and an electrically conductive solder that is disposed on at least portions of at least one of the first and second peripheral edges in electrical contact with one of the first and second electrically conductive layers.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: January 24, 2017
    Assignee: GENTEX CORPORATION
    Inventors: Kristopher R. Green, Joel A. Stray, William L. Tonar
  • Patent number: 9509113
    Abstract: Methods and systems for transient gain cancellation at an optical amplifier may involve generating saturating light that is introduced in a reverse direction to a transmission direction at a doped fiber amplification element. The doped fiber amplification element may amplify an input optical signal having a plurality of wavelengths as well as the saturating light. The saturating light may be regulated by a control circuit to counteract transient gain effects of add/drop events in the input optical signal. The saturated light may be filtered to achieve a desired spectral profile.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: November 29, 2016
    Assignee: Fujitsu Limited
    Inventor: Emilio Bravi