Particular Temperature Control Patents (Class 372/34)
  • Patent number: 10892598
    Abstract: A packaged transmitter device includes a base member comprising a planar part mounted with a thermoelectric cooler, a transmitter, and a coupling lens assembly, and an assembling part connected to one side of the planar part. The device further includes a circuit board bended to have a first end region and a second end region being raised to a higher level. The first end region disposed on a top surface of the planar part includes multiple electrical connection patches respectively connected to the thermoelectric and the transmitter. The second end region includes an electrical port for external connection. Additionally, the device includes a cover member disposed over the planar part. Furthermore, the device includes a cylindrical member installed to the assembling part for enclosing an isolator aligned to the coupling lens assembly along its axis and connected to a fiber to couple optical signal from the transmitter to the fiber.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: January 12, 2021
    Assignees: INPHI CORPORATION, Luxnet Corporation
    Inventors: Radhakrishnan L. Nagarajan, Peng-Chih Li, Pi-Cheng Law
  • Patent number: 10886699
    Abstract: Methods and systems for reducing SWaP in combinations of laser diode drivers (LDDs) and diode laser pump modules (DPMs) are disclosed.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: January 5, 2021
    Assignee: Science Research Laboratories, Inc.
    Inventors: Aland K. Chin, Richard H. Chin, Mehmet Dogan, Jonah H. Jacob
  • Patent number: 10862268
    Abstract: A semiconductor device includes a substrate, a semiconductor laser part formed on the substrate and having an active layer with an uniform composition and a first ridge structure, and an adjacent part formed on the substrate, having a core layer with an uniform composition and a second ridge structure, and being an optical modulator or an optical waveguide which is in contact with the semiconductor laser part, wherein the first ridge structure is largest in width at a first contact part which is in contact with the second ridge structure, and the second ridge structure is largest in width at a second contact part which is in contact with the first ridge structure.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: December 8, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventor: Hiroyuki Kawahara
  • Patent number: 10840671
    Abstract: Disclosed herein is a semiconductor laser device utilizing a monocrystalline SiC substrate that is capable of assuring a sufficient heat dissipation property. The semiconductor laser device comprises: a monocrystalline SiC substrate having an electrical conductivity, the substrate having a first surface and a second surface; and a semiconductor laser chip (LD chip) arranged on the first surface. Also, the semiconductor laser device may comprise an insulating film arranged at a side of the first surface of the SiC substrate and configured to insulate a first electric conductive layer onto which the semiconductor laser chip is mounted and an electric conductive member (a second electric conductive layer and a heatsink portion) to be joined to a side of the second surface of the SiC substrate.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: November 17, 2020
    Assignee: USHIO DENKI KABUSHIKI KAISHA
    Inventors: Masato Hagimoto, Susumu Sorimachi, Tomonobu Tsuchiya
  • Patent number: 10814431
    Abstract: A device and a method for laser-inducing cavitation strengthening with multi-system automatic coordination work. The device comprises a plurality of systems, including a clamping system, a lifting system, an imaging system, a computer control system, a laser system and an energy density amplifying system, etc. The device for laser-inducing cavitation strengthening comprises a laser cavitation device and a fixing platform.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: October 27, 2020
    Assignee: JIANGSU UNIVERSITY
    Inventors: Xudong Ren, Shouqi Yuan, Chengya Zuo, Yanqun Tong, Deshun Wang, Kun Wu, Jiaxing Lu, Hao He, Rui Zhou, Jie Wang
  • Patent number: 10732265
    Abstract: An optical illuminator assembly such as an integrated module can provide an illumination source for use in applications such as optical detection. A peak output power of the module can be enhanced as compared to other approaches, such as by one or more of controlling parasitic effects along an electrical pathway used to drive an optical emitter circuit included as a portion of the module, or by providing thermal management including establishing thermal conduction pathways through opposite surfaces of an optical emitter circuit such as an integrated circuit die comprising a solid-state optical emitter. Control schemes can be used that power various cells or functional blocks of the optical emitter independently. Thermal regulation can be provided by an active heat transfer element such as a thermoelectric cooler (TEC). An optical illuminator assembly can be optically coupled to a beam-steering device or other elements, such as using a self-aligning mechanical configuration.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: August 4, 2020
    Assignee: Analog Devices, Inc.
    Inventors: Krishnan Ramaswamy Parameswaran, Xu Tang, Ying-Ju Wang, Weidong Wang, David Bolognia, Scott Robert Davis, Christophe Antoine, Brian Hall
  • Patent number: 10673203
    Abstract: The present disclosure generally relates to methods of assembling projectors, and more particularly, to methods of aligning laser diodes in laser projectors. Implementations of the present disclosure include positioning an alignment beam and a photodetector in an optical path of the projector. The alignment beam propagates from an alignment light source through a location where a laser diode is to be mounted. A laser diode is then initially positioned in the optical path with a laser cavity of the diode acting as a passive waveguide during the assembly process. The laser diode is then fixed in place at a position and, or, an orientation that corresponds to light from the alignment beam passing through a laser cavity of the diode to be aligned and registering at least a minimum threshold value of a measure at the photodetector.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: June 2, 2020
    Assignee: North Inc.
    Inventor: Douglas Raymond Dykaar
  • Patent number: 10651621
    Abstract: A laser apparatus includes a heat transfer device having a cooling fin at a temperature lower than that of a heat radiation jacket, and a cooling fan. A controller controls the cooling fan so as to be stopped when temperature detected by a temperature sensor is lower than a temperature reference value and humidity detected by a humidity sensor is higher than a humidity reference value. The controller controls the cooling fan so as to be driven when temperature detected by the temperature sensor is higher than the temperature reference value and humidity detected by the humidity sensor is lower than the humidity reference value.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: May 12, 2020
    Assignee: FANUC CORPORATION
    Inventor: Akihiko Nishio
  • Patent number: 10637203
    Abstract: A laser device may include a chamber accommodating a pair of discharge electrodes, a grating provided outside the chamber, first beam-expanding optics provided between the chamber and the grating and configured to expand a beam width of light outputted from the chamber at least in a first direction perpendicular to a direction of discharge between the pair of discharge electrodes, and second beam-expanding optics having a plurality of prisms provided between the chamber and the grating, the second beam-expanding optics being configured to expand a beam width of light outputted from the chamber at least in a second direction parallel to the direction of discharge between the pair of discharge electrodes.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: April 28, 2020
    Assignee: Gigaphoton Inc.
    Inventor: Hirotaka Miyamoto
  • Patent number: 10619518
    Abstract: A self-powered laser system for discharging high energy light beams is disclosed. The laser system includes a laser unit, a power unit, and an exhaust system. The laser unit is capable of discharging beams in multiple directions. The exhaust system directs exhaust gasses discharged from the power unit.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: April 14, 2020
    Assignee: Rolls-Royce North American Technologies Inc.
    Inventor: Andrew J. Eifert
  • Patent number: 10581215
    Abstract: A laser light generator is configured to generate one or more wavelengths of continuous wave laser light. The laser light generator is configured to collectively and simultaneously transmit each of the wavelengths of continuous wave laser light through an optical output of the laser light generator as a laser light supply. An optical fiber is connected to receive the laser light supply from the optical output of the laser light generator. An optical distribution network has an optical input connected to receive the laser light supply from the optical fiber. The optical distribution network is configured to transmit the laser light supply to each of one or more optical transceivers and/or optical sensors. The laser light generator is physically separate from each of the one or more optical transceivers and/or optical sensors.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: March 3, 2020
    Assignee: Ayar Labs, Inc.
    Inventors: Milos Popovic, Rajeev Ram, Vladimir Stojanovic, Chen Sun, Mark Taylor Wade, Alexandra Carroll Wright
  • Patent number: 10535979
    Abstract: Methods for driving a tunable laser with integrated tuning elements are disclosed. The methods can include modulating the tuning current and laser injection current such that the laser emission wavelength and output power are independently controllable. In some examples, the tuning current and laser injection current are modulated simultaneously and a wider tuning range can result. In some examples, one or both of these currents is sinusoidally modulated. In some examples, a constant output power can be achieved while tuning the emission wavelength. In some examples, the output power and tuning can follow a linear relationship. In some examples, injection current and tuning element drive waveforms necessary to achieve targeted output power and tuning waveforms can be achieved through optimization based on goodness of fit values between the targeted and actual output power and tuning waveforms.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: January 14, 2020
    Inventors: Ross M. Audet, Mark Alan Arbore, Alfredo Bismuto, Yves Bidaux, Antoine Jean André Müller
  • Patent number: 10530112
    Abstract: Provided is a solid-state laser device in which a linear resonator including an output mirror and a rear mirror, a laser rod, and optical members are provided on a common base and are contained in a housing having the base as a portion. A holding part is provided to hold an excitation light source that extends parallel to the laser rod on a side of the laser rod opposite to the base. The optical members including a Q-switch are disposed between the laser rod and the rear mirror. An upper end position of the output mirror is at a position lower than a lower end position of the excitation light source held by the holding part, with the base as a reference. The holding part holds the excitation light source so as to be capable of being inserted and extracted with respect to the output mirror side in a longitudinal direction of the excitation light source.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: January 7, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Hiroyasu Ishii, Takatsugu Wada, Keiji Tsubota
  • Patent number: 10508803
    Abstract: An apparatus and a method for cooling a digital micromirror device are disclosed. For example, the apparatus includes a digital micromirror device (DMD), a housing coupled to the DMD, wherein a first side of the housing is coupled to a bottom of the DMD and a cooling block coupled to a second side of the housing that is opposite the first side. The cooling block includes a plate that includes a plurality of openings, a diaphragm coupled to the plate, an air inlet to generate an airflow across the plate, wherein the diaphragm creates a force to move the airflow in a direction that is perpendicular to a direction of the airflow towards the second side of the housing, and an air outlet to collect the airflow.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: December 17, 2019
    Assignee: Xerox Corporation
    Inventor: Francisco Zirilli
  • Patent number: 10511134
    Abstract: A laser system for generating a series of laser pulses comprising a laser generator that supplies an injection pulse to an amplifier; said amplifier comprising: a gain medium enclosed between a first mirror and a second, output, mirror opposite to said first mirror; and an optical switch set in the proximity of said first mirror; said laser system being characterized in that said amplifier is an unstable laser resonator and said injection pulse is supplied to said laser resonator in synchronism with opening of said optical switch; said series of laser pulses comprises at least one pulse having a duration shorter than or equal to 2 ns and an energy higher than 100 mJ and at least three times higher than the energy of any other pulse of said series of pulses.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: December 17, 2019
    Assignee: QUANTA SYSTEM S.P.A.
    Inventors: Marco Tagliaferri, Fabio Paleari, Fabio Cannone, Luca Cerri
  • Patent number: 10475967
    Abstract: Wavelength converters (103) with improved thermal conductivity are described. In some embodiments the wavelength converters include a thermally conductive component (204, 206) and a wavelength conversion material (205) mixed with or dispersed in the thermally conductive component. The wavelength conversion material (205) includes non-agglomerated quantum dots. The presence of the thermally conductive component may facilitate removal of heat from the wavelength converter, potentially reducing the impact of elevated temperature on the performance of the wavelength conversion material therein. Methods of making such wavelength converters and lighting devices including such wavelength converters are also described.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: November 12, 2019
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Maria Anc, Mark Hannah
  • Patent number: 10468939
    Abstract: A liquid coolant sleeve fixing device for fixing the cylindrical liquid coolant sleeve in a radially interior part of a housing is disclosed. The coolant sleeve fixing device includes a bolt for fixing the liquid coolant sleeve and the housing, and an axial installation hole disposed on an axial side of the housing and used for installing the bolt. The fixing device also includes a recess disposed on an axial side of the liquid coolant sleeve, and a press plate of a shape which fits the recess, the quantity of the press plate being the same as the quantity of the recess. A radially inner side part of the press plate presses against the interior of the recess. The press plate is fixed to the housing by means of the bolt and installation hole, thereby fixing the liquid coolant sleeve in the radially interior part of the housing.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: November 5, 2019
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Shanguo Fang, Markus Wagenbret, Zhenhua Wu
  • Patent number: 10447389
    Abstract: Methods according to the disclosure include methods for managing data flow in an optical communications system having a plurality of vertical cavity surface emitting lasers (VCSELs). The method generally includes determining whether operation of the system exceeds a thermal threshold for a thermal parameter of the system, and switching from a first data bandwidth to a second data bandwidth when the thermal threshold is exceeded. Operation at the second data bandwidth further includes determining whether further operation of the system demands the first data bandwidth, and resuming operation of the system at the first data bandwidth only when the thermal parameter during operation at the second data bandwidth does not exceed the thermal threshold.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: October 15, 2019
    Assignees: GLOBALFOUNDRIES INC., International Business Machines Corporation
    Inventors: Hayden C. Cranford, Jr., Jonathan E. Proesel, Rashmi R. Bindu
  • Patent number: 10360820
    Abstract: An apparatus implements a process to enhance message privacy and includes memory and a processor coupled to the memory. The processor accesses a plain-text message in binary computer code; utilizes a key aligned with a first segment of the plain-text message; utilizes the “one” bits of the key to point to tapped bits in the first segment; removes each tapped bit and places them into a new block; shifts the remaining bits in the first segment rightward (or leftward) and creates a ciphered message by three steps: filling the empty spaces in the message block with the tapped bits; adding the tapped bits as a second block after the first segment; and inserting the tapped bits into a second block of the plain-text message displacing bits located at an end of the second block and then moving those displaced bits into the empty bit spaces in the first segment.
    Type: Grant
    Filed: September 4, 2016
    Date of Patent: July 23, 2019
    Inventor: Shahriar Pourazin
  • Patent number: 10338461
    Abstract: A light-emitting device (1) and a related light source system. The light-emitting device (1) comprises a laser light source (11, 21, 31) and a light collecting system (12, 22). The laser light source (11, 21, 31) comprises a first laser array (111, 211, 311) and a second laser array (112, 212, 312) for respectively generating a first light and a second light with different wavelength ranges. The light collecting system (12, 22) is used for collecting the light emitted from the laser light source arrays. The ratio of the divergence angle of the collected second light to that of the first light is less than or equal to a predetermined value. The predetermined value is 0.7. The light-emitting device (1) is capable of generating two kinds of light beams with different etendues.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: July 2, 2019
    Assignee: APPOTRONICS CORPORATION LIMITED
    Inventors: Fei Hu, Haixiong Hou
  • Patent number: 10326249
    Abstract: A compact laser is provided for in accordance with an exemplary embodiment in the present disclosure includes a compact resonator structure using a non-planar geometry of bulk components. The laser includes a preferred rotational direction of lasing modes and employs bulk components for establishing the preferred rotational direction of lasing modes within resonator. In some embodiments, the preferred rotational direction of lasing modes is established using a reflective element that is outside the resonator structure. In some embodiments, the reflective element induces polarization shifts in the reflected light that are compensated for by a wave plate, which may be outside the resonator structure.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: June 18, 2019
    Assignee: Arete Associates
    Inventor: James Thomas Murray
  • Patent number: 10312662
    Abstract: To provide an optical module whose power consumption in an ambient temperature range is reduced, and an optical transmission equipment. The optical module includes: a housing; a box type optical subassembly including a bottom portion serving as a heat dissipation face; and a heat conductive member disposed between the bottom portion of the optical subassembly and a bottom portion of the housing. The optical subassembly includes one or a plurality of optical semiconductor devices, and a temperature controller on which the one or plurality of optical semiconductor devices are mounted and which is placed on an inner bottom portion of the optical subassembly. The heat conductive member is disposed only at a portion of the bottom portion of the optical subassembly.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: June 4, 2019
    Assignee: Oclaro Japan, Inc.
    Inventors: Takuya Sato, Keiichi Murakami, Koki Sato
  • Patent number: 10224693
    Abstract: A first contact surface of a semiconductor laser chip can be formed to a target surface roughness selected to have a maximum peak to valley height that is substantially smaller than a barrier layer thickness. A barrier layer that includes a non-metallic, electrically-conducting compound and that has the barrier layer thickness can be applied to the first contact surface, and the semiconductor laser chip can be soldered to a carrier mounting along the first contact surface using a solder composition by heating the soldering composition to less than a threshold temperature at which dissolution of the barrier layer into the soldering composition occurs. Related systems, methods, articles of manufacture, and the like are also described.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: March 5, 2019
    Assignee: SpectraSensors, Inc.
    Inventors: Alfred Feitisch, Gabi Neubauer, Mathias Schrempel
  • Patent number: 10218145
    Abstract: A vortex laser generation device in a degenerate cavity with a spiral phase element and a vortex laser generation method are provided. The vortex laser generation device has a degenerate cavity, and the degenerate cavity has a resonator mirror, a gain medium, an optical element, and an output coupler. The off-axis beams are formed in multiple pass transverse modes to resonate by disposing an optical element in the degenerate cavity, so that a vortex laser with orbital angular momentum can be generated.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: February 26, 2019
    Assignee: NATIONAL SUN YAT-SEN UNIVERSITY
    Inventors: Yuan-Yao Lin, Yen-Yin Lin, Shou-Tai Lin, An-Chung Chiang
  • Patent number: 10211597
    Abstract: A semiconductor laser resonator configured to generate a laser beam includes a gain medium layer including a semiconductor material and comprising at least one protrusion formed by at least one trench to protrude in an upper portion of the gain medium layer. In the semiconductor laser resonator, the at least one protrusion is configured to confine the laser beam as a standing wave in the at least one protrusion.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: February 19, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chanwook Baik, Hyochul Kim, Yeonsang Park
  • Patent number: 10211600
    Abstract: The present invention provides a rotating chalcogenide gain media ring to provide un-precedented power generation with minimal thermal lensing for CW lasing in the mid-IR spectrum.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: February 19, 2019
    Assignee: IPG PHOTONICS CORPORATION
    Inventor: Igor Moskalev
  • Patent number: 10199797
    Abstract: A light-emitting element module includes: a Peltier device; a light-emitting element that is disposed on the Peltier device; and a package that accommodates the Peltier device and the light-emitting element, the package including a base on which the Peltier device is disposed and a lid joined to the base and. When Ts is external temperature of the package, Tv is temperature of the light-emitting element, Tc1 is temperature of the base, and Tc2 is temperature of the lid, Ts<Tc2<Tc1 is satisfied in a case of Tv<Ts.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: February 5, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Yoshiyuki Maki, Tsunenori Shibata, Koji Chindo
  • Patent number: 10191023
    Abstract: A sensor unit (10) for detecting a gas is configured with a pressure-tight measuring channel (11), with a gas inlet (12) for introducing the gas into the measuring channel, with a gas outlet (13) for removing the gas from the measuring channel, and with a pump unit (14) for evacuating the measuring channel. The measuring channel has a gas sensor (15) for detecting the gas and a heating unit (16) for heating the gas sensor. The sensor unit (10) is configured to be operated in a measuring mode and in a regeneration mode. The measuring channel (11) is evacuated and the gas sensor (15) is heated in the regeneration mode.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: January 29, 2019
    Assignee: Dräger Safety AG & Co. KGaA
    Inventors: Wolfgang Bäther, Björn Raupers, Stefan Lehmann
  • Patent number: 10162199
    Abstract: An optical transmitter includes a reflective semiconductor optical amplifier (RSOA) coupled to an input end of a first optical waveguide. An end of the first optical waveguide provides a transmitter output for the optical transmitter. Moreover, a section of the first optical waveguide between the input end and the output end is optically coupled to a ring modulator that modulates an optical signal based on an electrical input signal. A passive ring filter (or a 1×N silicon-photonic switch and a bank of band reflectors) is connected to provide a mirror that reflects light received from the second optical waveguide back toward the RSOA to form a lasing cavity. Moreover, the ring modulator and the passive ring filter have different sizes, which causes a Vernier effect that provides a large wavelength tuning range for the lasing cavity in response to tuning the ring modulator and the passive ring filter.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: December 25, 2018
    Assignee: Oracle International Corporation
    Inventors: Xuezhe Zheng, Ying Luo, Jin Yao, Ashok V. Krishnamoorthy
  • Patent number: 10158207
    Abstract: A method for the recovery of energy from a laser machining system and a device for performing the same, in which the method includes operating the laser machining system and generating thermal energy having a maximum temperature Tmax, removing at least a portion of the thermal energy, and recirculating the at least a portion of the thermal energy to the laser machining system.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: December 18, 2018
    Assignee: TRUMPF Werkzeugmaschinen GmbH + Co. KG
    Inventors: Eberhard Wahl, Karel Vincke, Matthias Himmelsbach
  • Patent number: 10115659
    Abstract: A solution for packaging a two terminal device, such as a light emitting diode, is provided. In one embodiment, a method of packaging a two terminal device includes: patterning a metal sheet to include a plurality of openings; bonding at least one two terminal device to the metal sheet, wherein a first opening corresponds to a distance between a first contact and a second contact of the at least one two terminal device; and cutting the metal sheet around each of the least one two terminal device, wherein the metal sheet forms a first electrode to the first contact and a second electrode to the second contact.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: October 30, 2018
    Assignee: Sensor Electronics Technology, Inc.
    Inventors: Yuri Bilenko, Michael Shur, Remigijus Gaska, Alexander Dobrinsky
  • Patent number: 10109812
    Abstract: An energy conversion device comprises an apparatus and a method for employing energy from an electron- and, optionally, photon-containing energy wave that is induced in one or more aggregated molecular ensembles. Emission is stimulated from the ensembles by a wide variety of energy inputs, and energy derived from this electron and/or photon energy wave is useful for modulation of signals in circuits; performing chemical reduction reactions; and performing as an energy conversion device, e.g., as a photovoltaic energy converter. Although differing from a laser by virtue its production of, inter alia, a charge transfer rather than merely light, the device of the invention can be employed in virtually all of the same fields in which a laser is utilized.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: October 23, 2018
    Inventors: Edward J. Britt, Reay S. Dick, W. Todd Wipke
  • Patent number: 10096537
    Abstract: Embodiments of the present invention are directed to heat transfer arrays, cold plates including heat transfer arrays along with inlets and outlets, and thermal management systems including cold-plates, pumps and heat exchangers. These devices and systems may be used to provide thermal management or cooling of semiconductor devices and particularly such devices that produce high heat concentrations. The heat transfer arrays may include microjets, microchannels, fins, and even integrated microjets and fins. Other embodiments of the invention are directed to heat spreaders (e.g. heat pipes or vapor chambers) that provide enhanced thermal management via enhanced wicking structures and/or vapor creation and flow structures. Other embodiments provide enhanced methods for making such arrays and spreaders.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: October 9, 2018
    Assignee: Microfabrica Inc.
    Inventors: Richard T. Chen, Will J. Tan
  • Patent number: 10084284
    Abstract: Laser with extended mode-hop free spectral tuning ranges and methods for manufacturing such lasers are disclosed. In an embodiment the method includes providing a light emitting device, the light emitting device comprising a gain region and a first wavelength selection region and mounting the light emitting device on a thermally conductive carrier such that the gain region is mounted on a first carrier surface and the first wavelength selection region is arranged over and spaced apart from a second carrier surface.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: September 25, 2018
    Assignee: Photodigm, Inc.
    Inventors: Preston P. Young, Annie Xiang
  • Patent number: 10079645
    Abstract: Optical telecommunications devices, systems, and methods. In some implementations, an optical networking unit (ONU) includes a multi-rate receiver having an operating bandwidth that is selected operationally based on physical layer characteristics of received signals and information received from a MAC. The ONU can also include an upstream laser circuit having an output impedance that differs from a characteristic impedance of a system in which the laser circuit is implemented. The ONU can also include a decision feedback equalizer (DFE) having at least one tap weight that is fixed to facilitate convergence of the DFE when signals received by the DFE would otherwise fail to meet characteristics required for DFE convergence.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: September 18, 2018
    Assignee: ADTRAN, Inc.
    Inventor: Daniel M. Joffe
  • Patent number: 10065268
    Abstract: A laser processing system able to realize both reduction of the power consumption and shortening of the cycle time. The laser processing system is provided with a laser oscillator, a laser processing machine which has a movement mechanism which makes the irradiation position of the laser light on the workpiece move, a mode switching part which switches an operation mode of the laser oscillator between a standard-standby mode and an energy saving mode, a movement controller controlling the movement mechanism so as to place the irradiation position at a process start point placed at a non-product region of the workpiece, and a switching controller controlling the mode switching part to switch the operation mode from the energy saving mode to the standard-standby mode when placing the irradiation position at the process start point.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: September 4, 2018
    Assignee: FANUC CORPORATION
    Inventor: Kazuhiro Suzuki
  • Patent number: 10063027
    Abstract: The present invention provides a semiconductor laser device for improving temperature characteristics of waveguide structures and realizing stable light emitting patterns and high output, and a method for making the same. The semiconductor laser device (1) comprises: an n-type clad layer (5) laminated on a substrate (2); an active layer (6) laminated on the n-type clad layer (5); a p-type clad layer (7) laminated on the active layer (6); and a plurality of waveguide structures (8) formed on the p-type clad layer (7) and having a ridge of a horn shape in top view. In this configuration, a divider (29) is formed between adjacent waveguide structures (8), and the divider (29) comprises: a groove (30) dividing the active layer (6); and a heat dissipation material (34) filled in the groove (30) and having a thermal conductivity higher than a thermal conductivity of a semiconductor layer (4).
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: August 28, 2018
    Assignee: ROHM CO., LTD.
    Inventor: Hisayoshi Kitajima
  • Patent number: 10035224
    Abstract: In accordance with embodiments of the present disclosure, a blower module assembly may include a housing, a blower mechanically coupled to the housing, and an airflow guide mechanically coupled between the housing and the blower. The blower may be mechanically coupled to the housing, may have an intake and an exhaust, and may be configured to move air from the intake to the exhaust. The airflow guide may be mechanically coupled between the housing and the blower, may have a solid region and a plenum region such that the border between the solid region and the plenum region is defined by a portion of an arcuate cylinder. The housing, the blower, and the airflow guide may be arranged such that a plenum is defined by surfaces of the housing, the blower, and the portion of the arcuate cylinder, the plenum adjacent to the intake.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: July 31, 2018
    Assignee: Dell Products L.P.
    Inventors: Chris E. Peterson, Robert Curtis
  • Patent number: 10027091
    Abstract: A two-dimensional VCSEL array may include a VCSEL array including a VCSELs arranged in a two dimensional matrix forming a monolithic structure, a light-emitting surface, and a rear surface, first metal contacts provided on the light-emitting surface; and second metal contacts provided on the rear surface. The VCSELs may be arranged in first lines in a first direction and second lines in a second direction non-parallel to the first direction. Each of the first metal contacts may be electrically connected to each VCSEL of a corresponding first line. Each of the plurality of second metal contacts may be electrically connected to each VCSEL of a corresponding second line. The first metal contacts and second metal contacts may be arranged such that each combination of a first metal contact and a second metal contact is electrically connected to one VSCEL.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: July 17, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Ariel Lipson
  • Patent number: 10014646
    Abstract: A laser oscillation cooling device (100) includes a light emitting section (1) that emits laser excitation light (Z1), a laser excitation section (2) that excites the laser excitation light (Z1) to emit laser light (Z2) and has a heat generating region (S) where heat is locally generated, a storage tank (3) capable of storing an extremely low temperature liquid (L), a pressurizing section (31) that brings the extremely low temperature liquid (L) into a sub-cool state by pressurizing the inside of the storage tank (3), and a jetting supply section (4) that removes heat from the laser excitation section (2) by jetting the extremely low temperature liquid (L) in the sub-cool state from a plurality of jet ports arrayed in a two-dimensional manner to the laser excitation section (2).
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: July 3, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Jiro Kasahara, Junnosuke Nakatani, Yuichi Otani, Naoki Inoue, Koichi Hamamoto, Shingo Nishikata
  • Patent number: 10008828
    Abstract: Embodiments of the present disclosure may relate to a hybrid silicon distributed feed-back (DFB) laser, wherein light is to propagate through the DFB laser along a length of the DFB laser. The DFB laser may include a mesa with a current channel that extends from the first side of the mesa to the second side of the mesa. At a first location along the length of the DFB laser, the current channel may have a first width and/or the mesa may have a second width. At a second location along the length of the DFB laser, the current channel may have a third width and/or the mesa may have a fourth width as measured in a direction perpendicular to the length of the DFB laser. Other embodiments may be described and/or claimed.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: June 26, 2018
    Assignee: INTEL CORPORATION
    Inventors: Pierre Doussiere, Jonathan K. Doylend
  • Patent number: 10003173
    Abstract: A tunable laser has a first binary super grating (BSG), a second BSG, and a phase adjuster. The first BSG, the second BSG, and the phase adjuster are optically tuned by changing temperatures of respective heating elements. The tunable laser also includes three temperature sensors, a first sensor to measure the temperature of the first BSG; a second sensor to measure the temperature of the second BSG, and a third sensor to measure the temperature of the phase adjuster. A lasing frequency is determined by a set of values of the three temperature sensors. In some embodiments, instead of a third temperature sensor, a pilot tone is applied to the phase adjuster to lock to a maximum of an aligned pair of peaks.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: June 19, 2018
    Assignee: Skorpios Technologies, Inc.
    Inventor: Hacene Chaouch
  • Patent number: 10003171
    Abstract: A sealable laser diode heat sink module for a laser diode includes an anode assembly and a cathode assembly having a cathode base and a cathode connector plate. The anode assembly includes an anode base configured to house the laser diode and the cathode base within a sealable cavity recessed into the anode base. The anode base has a cathode base opening configured to receive the cathode connector plate. An anode connector plate extends from the anode base. An anode current path passes through the laser diode and the anode connector plate via direct connections through the anode base. A cathode current path passes through the cathode connector plate passes via direct connections through the cathode base. The anode base is configured to dissipate heat from the laser diode.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: June 19, 2018
    Assignee: Excelitas Technologies Corp.
    Inventors: Scott Carpenter, Wai Choi
  • Patent number: 9991965
    Abstract: A modulator driver circuit for providing a drive voltage to an electro-absorption modulator, such a Franz-Keldysh modulator, or to a micro-ring modulator, and an optical transmitter including such driver circuit, where said driver circuit includes a differential amplifier and at least one differential branch of the differential amplifier being provided with a voltage offset. This provides for a bias voltage being adjustable within the driver circuit itself. Preferably, the differential amplifier is arranged for supplying drive voltage to two complementary driver outputs providing a reverse bias relative to the modulator. In one embodiment, the differential amplifier includes a cascode in the differential branch not being provided with the voltage offset.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: June 5, 2018
    Assignee: Mellanox Technologies Denmark APS
    Inventor: Steen Bak Christensen
  • Patent number: 9906763
    Abstract: A projection type display apparatus includes: a semiconductor laser element that outputs laser light based on supply of current; a digital mirror device (DMD) that modulates the light output from the semiconductor laser element and emits the modulated light; a projection lens that projects the incident light via the DMD; a drive unit that drives the semiconductor laser element and includes a current detection unit for detecting the current value of the current flowing through the semiconductor laser element; and a controller that, when the current value detected by the current detection unit becomes greater than a first threshold, controls driving of the DMD so that the light output from the DMD will not be incident on the projection lens, and when the current value detected becomes greater than a second threshold greater than the first threshold, causes the drive unit to cut off the supply of current.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: February 27, 2018
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventor: Mitsuru Takahashi
  • Patent number: 9899789
    Abstract: A thermal management system for removing excess heat from a heat source includes a condenser and an evaporator fluidly connected together within a cooling loop. A phase change material is positioned within the condenser. The phase change material is configured to melt with a liquid coolant warmed by the evaporator. The phase change material is also configured solidify with the liquid coolant cooled by the condenser to temperatures below the melting point.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: February 20, 2018
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Robert S. Downing
  • Patent number: 9886740
    Abstract: In one embodiment the table pointed to by visibility samples in Degradation Coverage-Based Anti-Aliasing is split up so that more values can fit (but each value uses fewer bits). This way, more values can be represented in a pixel, and this leads to better image quality in some embodiments. This also opens up the possibility of using as few as two values per pixel, whereas the CSAA uses four or more. Hence, this also saves bandwidth and therefore, also reduces power consumption in some embodiments.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: February 6, 2018
    Assignee: Intel Corporation
    Inventors: Tomas G. Akenine-Moller, Jim K. Nilsson
  • Patent number: 9865991
    Abstract: Disclosed herein is a technology of effectively interrupting light reflected from a wavelength selective filter so as not to be fed back to a laser diode chip in a semiconductor laser package having a function of adjusting a relative intensity ratio of a signal of “1” and a signal of “0” using an optical filter. Since an optical interruption device according to the present invention may effectively interrupt a light feedback to the laser diode chip by adjusting characteristics of a 45 degree partial reflection mirror in an existing TO-can type laser device having the 45 degree partial reflection mirror and additionally disposing one ?/4 waveplate, unlike an optical isolator according to the related art using an existing Faraday rotator, the signals of “1” and “0” may be effectively adjusted in a TO-can type laser device having a small volume, thereby improving a function of communication.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: January 9, 2018
    Assignee: PHOVEL.CO.LTD.
    Inventor: Jeong-Soo Kim
  • Patent number: 9859674
    Abstract: A laser oscillation cooling device (100) is provided with a light emitting section (1) that emits laser excitation light (Z1), a laser excitation section (2) that excites the laser excitation light (Z1) to emit laser light (Z2) and locally generates heat, a storage tank (3) capable of storing an extremely low temperature liquid (L), a pressurizing section (31) that brings extremely low temperature liquid (L) into a sub-cool state by pressurizing the inside of the storage tank (3), and a jetting supply section (4) that removes heat from the laser excitation section (2) by jetting the extremely low temperature liquid (L) in the sub-cool state to the laser excitation section (2).
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: January 2, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Jiro Kasahara, Naoki Inoue, Koichi Hamamoto
  • Patent number: 9806489
    Abstract: A compact laser is provided for in accordance with an exemplary embodiment in the present disclosure includes a compact resonator structure using a non-planar geometry of bulk components. The laser includes a preferred rotational direction of lasing modes and employs bulk components for establishing the preferred rotational direction of lasing modes within resonator. In some embodiments, the preferred rotational direction of lasing modes is established using a reflective element that is outside the resonator structure. In some embodiments, the reflective element induces polarization shifts in the reflected light that are compensated for by a wave plate, which may be outside the resonator structure.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: October 31, 2017
    Assignee: Arete Associates
    Inventor: James Thomas Murray