Light Wave Temporal Modulation (e.g., Frequency, Amplitude, Etc.) Patents (Class 359/238)
  • 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 FĂ–RDERUNG 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: 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: 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: 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: 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: 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: 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
  • Patent number: 9500875
    Abstract: An imaging lens unit is presented, comprising an imaging lens having a lens region defining an effective aperture, and a phase coder. The phase coder may be incorporated with or located close to the lens region. The phase coder defines a surface relief along the lens region formed by at least three phase patterns extending along the lens region. Each of the phase patterns differently affecting light components of one of at least three different wavelength ranges while substantially not affecting propagation of light components of other of said at least three wavelength ranges. The surface relief affects light propagation through the lens region to extend a depth of focus for at least one of said at least three wavelength ranges.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: November 22, 2016
    Assignee: Brien Holden Vision Institute
    Inventors: Zeev Zalevsky, Alex Zlotnik, Shai Ben-Yaish, Ofer Limon, Ido Raveh
  • Patent number: 9476981
    Abstract: An optical phased array formed of a large number of nanophotonic antenna elements can be used to project complex images into the far field. These nanophotonic phased arrays, including the nanophotonic antenna elements and waveguides, can be formed on a single chip of silicon using complementary metal-oxide-semiconductor (CMOS) processes. Directional couplers evanescently couple light from the waveguides to the nanophotonic antenna elements, which emit the light as beams with phases and amplitudes selected so that the emitted beams interfere in the far field to produce the desired pattern. In some cases, each antenna in the phased array may be optically coupled to a corresponding variable delay line, such as a thermo-optically tuned waveguide or a liquid-filled cell, which can be used to vary the phase of the antenna's output (and the resulting far-field interference pattern).
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: October 25, 2016
    Assignee: Massachusetts Institute of Technology
    Inventors: Ami Yaacobi, Michael R. Watts
  • Patent number: 9477013
    Abstract: Disclosed is an optical source device. The optical source device includes: a mode converter configured to be optically coupled with an optical fiber; a semiconductor optical amplifier coupled with the mode converter, and configured to amplify an optical signal input through the optical fiber; and an electro absorption modulator coupled to the optical amplifier, and configured to modulate the amplified optical signal and output the modulated optical signal, in which each of the semiconductor optical amplifier and the optical absorption modulator includes a heater.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: October 25, 2016
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Dong Hun Lee, Jong Sool Jeong, Ki Soo Kim, Hyun Soo Kim, Mi Ran Park, O Kyun Kwon
  • Patent number: 9441944
    Abstract: An optical coherence analysis system uses a laser swept source that is constrained to operate in a mode locked condition using regenerative mode-locking. This is accomplished by synchronously changing the laser cavity's net gain and/or phase based on time varying intensity of the swept optical signal generated by the laser. This produces a stable pulsation behavior, which is associated with smooth tuning (low optical frequency reference clock jitter) and low relative intensity noise (RIN).
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: September 13, 2016
    Assignee: Axsun Technologies LLC
    Inventors: Mark E. Kuznetsov, Bartley C. Johnson
  • Patent number: 9438002
    Abstract: Provided is a laser system. The laser system includes: a laser device providing a laser pulse; a pulse compressor decreasing a pulse width of the laser pulse; a pulse stretcher disposed between the compressor and the laser device and dispersing the laser pulse; and a filament portion disposed between the pulse stretcher and the pulse compressor, wherein the filament portion transmits the laser pulse to expand a spectrum of the laser pulse by using self focusing and a filament phenomenon of the laser pulse.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: September 6, 2016
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Dong Hoon Song, Mun Youn Jung
  • Patent number: 9377169
    Abstract: A light source system comprising a projection lens, which is capable of producing a far-field image of a light source. The light source comprises a photoluminescent material that when illuminated by light from laser emitters of a first waveband emits light of a second or more wavebands of longer wavelength. The resulting light emission produces a color perceived as white. The light source is illuminated by a plurality of laser emitters arranged to illuminate the light source in an array-like manner from the front side. Control of the output of one or more of the laser emitters results in a variation of the spatial emission distribution from the light source and hence a variation of the far-field beam spot distribution via non-mechanical means. An optical system is arranged to image light emitted from the photoluminescent material into the far-field, which optical system comprises a converging lens.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: June 28, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: James Rowland Suckling, David James Montgomery, Sarah Anne Mitchell, Koji Takahashi
  • Patent number: 9355701
    Abstract: A data write method of a nonvolatile memory device is provided which includes receiving write data to be stored in selected memory cells; reading data stored in the selected memory cells; processing the write data according to a plurality of data modulation manners to generate a plurality of modulated data values; calculating the number of flip bits and the number of switching bits when the write data and the plurality of modulated data values are overwritten on the selected memory cells, each flip bit indicating that a logical value of a selected memory cell is reversed and each switching bit indicating that a logical value of a selected memory cell is switched from a first logical value to a second logical value; and selecting one of the write data and the plurality of modulated data values according to calculating the number of flip bits and the number of switching bits.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: May 31, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Eun Chu Oh, Junjin Kong, Younggeon Yoo, Kijun Lee
  • Patent number: 9325956
    Abstract: The present disclosure is related to a method for calibrating a projector. The method includes receiving by a processing element one or more mapping images. After receiving the images, the method includes defining by the processing element a non-linear color mapping function, the color mapping function mapping pixels between the projector and a camera used to capture the mapping images. The method then includes determining by the processing element a compensation image using the color mapping function. The compensation image corresponds to an input image and takes into account variations in the surface onto which the input image is to be projected.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: April 26, 2016
    Assignee: DISNEY ENTERPRISES, INC.
    Inventor: Anselm Grundhofer
  • Patent number: 9285611
    Abstract: Provided are examples of light modulators and optical apparatuses that may include the light modulators. A light modulator may include a plasmonic nano-antenna and an element for changing plasmon resonance characteristics of the plasmonic nano-antenna. The plasmon resonance characteristics of the plasmonic nano-antenna may be changed due to a change in refractive index of the element, and thus light may be modulated.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: March 15, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-hoon Han, Yong-hwa Park, Chang-gyun Shin, Hong-seok Lee
  • Patent number: 9270956
    Abstract: A display has a screen which incorporates a light modulator. The screen may be a front projection screen or a rear-projection screen. The screen is illuminated with light from a light source comprising an array of controllable light-emitters. The controllable-emitters and elements of the light modulator may be controlled to adjust the intensity of light emanating from corresponding areas on the screen. The display may provide a high dynamic range.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: February 23, 2016
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Lorne A. Whitehead, Gregory John Ward, Wolfgang Stuerzlinger, Helge Seetzen, Don Graham
  • Patent number: 9239465
    Abstract: An image display to provide a realistic 3D stereoscopic image of a desired scene. The display device is comprised of directional pixels. Each directional pixel has a plurality of facets having a constrained viewing angle. Each facet has a point source of light that emits light with a controllable luminescence and hue. In this regard, each facet of the directional pixel has a constrained viewing angle and independent luminance and hue.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: January 19, 2016
    Assignee: Softronics, Ltd.
    Inventor: Robert H. Sternowski
  • Patent number: 9229010
    Abstract: Disclosed are methods and compositions for monitoring, diagnosis, prognosis, and determination of treatment regimens in subjects suffering from or suspected of having a renal injury. In particular, disclosed are assays that detect one or more markers selected from the group consisting of Prostatic acid phosphatase, Lactotransfenin, Soluble erythropoietin receptor, Von Willebrand factor, Soluble endothelial protein C receptor, and Beta-2-glycoprotein 1 as diagnostic and prognostic biomarkers in renal injuries.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: January 5, 2016
    Assignee: ASTUTE MEDICAL, INC.
    Inventors: Joseph Anderberg, Jeff Gray, Paul McPherson, Kevin Nakamura
  • Patent number: 9184865
    Abstract: An optical switch includes a substrate, a ring resonator formed on the substrate, a first waveguide formed on the substrate in optical coupling with the ring resonator, the first waveguide being configured to guide a WDM signal, an optical detector configured to detect an optical signal component in said ring resonator, a temperature regulator driven in response to an output signal of the optical detector, the temperature regulator being configured to change a temperature of the ring resonator, the ring resonator having a resonant wavelength corresponding to a wavelength of an optical signal component that constitutes the WDM signal, the ring resonator, the optical detector and the temperature regulator constituting together a feedback control system that locks the resonant wavelength of the ring resonator to the wavelength of the optical signal component in the WDM signal.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: November 10, 2015
    Assignee: FUJITSU LIMITED
    Inventor: Tomoyuki Akiyama
  • Patent number: 9134629
    Abstract: An illumination system of a lithographic apparatus includes a plurality of reflective elements arranged to receive radiation from a radiation source, the reflective elements being movable between different orientations. In the different orientations, the reflective elements direct radiation towards different locations at a reflective component in a pupil plane of the illumination system, thereby forming different illumination modes. Each reflective element is moveable between a first orientation, which directs radiation towards a first location the pupil plane, and a second orientation, which directs radiation towards a second location in the pupil plane. The first orientation and the second orientation of the reflective element are defined by end stops.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: September 15, 2015
    Assignee: ASML NETHERLANDS B.V.
    Inventors: Erik Roelof Loopstra, Koen Van Ingen Schenau, Jan Bernard Plechelmus Van Schoot, Christian Wagner, Gosse Charles De Vries
  • Patent number: 9086509
    Abstract: Polarizers and polarizing beam splitter include one or more pairs of axicons that are configured to separate an input beam into a radially polarized component and a tangentially (or azimuthally) polarized component. A second axicon pair can be provided to recombine the tangentially polarized component so as to provide a more uniform beam intensity. The radially polarized component can be reflected or otherwise directed so that one or both the radial and tangential components are available for use.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: July 21, 2015
    Assignee: The United States of America as represented by the Secretary, Department of Health and Human Services
    Inventor: Jay R. Knutson
  • Publication number: 20150138510
    Abstract: A system for variable distribution of light is provided. The system comprises: a plurality of reflective optical devices having a first variable reflective beam splitter configured to receive light along an input light path and direct a first portion of the light along a first light path and direct a second portion of the light to another one of the plurality of reflective optical devices, and a last reflective optical device configured to receive remaining light from a second last reflective optical device and to perform one of: direct the remaining light along a last light path; and, divide the remaining light into two portions, and direct the two portions along two different light paths. At least one optical property of one or more of the plurality reflective optical devices is adjustable to variably apportion received light.
    Type: Application
    Filed: November 20, 2013
    Publication date: May 21, 2015
    Applicant: CHRISTIE DIGITAL SYSTEMS CANADA INC.
    Inventor: John DOMM
  • Publication number: 20150116814
    Abstract: A device according to an embodiment includes: a simulated skin portion being located near a photoelectric pulse wave sensor to simulate a blood flow of the skin; a reflectance changing unit located on an opposite side of the simulated skin portion to the photoelectric pulse wave sensor, the reflectance changing unit changing, in time series, reflectance of light emitted from the light-emitting unit of the photoelectric pulse wave sensor and passing through the simulated skin portion; a reflectance change control unit that transmits a reflectance control signal to the reflectance changing unit to control changes in reflectance of the reflectance changing unit; and a synchronization signal output unit that outputs a signal in sync with the reflectance control signal to an external device.
    Type: Application
    Filed: September 18, 2014
    Publication date: April 30, 2015
    Inventors: Junya TAKAKURA, Kanako NAKAYAMA, Sawa FUKE, Takuji SUZUKI, Yasunobu YAMAUCHI