52nd week of 2020 patent applcation highlights part 40 |
Patent application number | Title | Published |
20200400798 | LIDAR SYSTEM WITH SOLID STATE SPECTRAL SCANNING - A light detection and ranging (LIDAR) apparatus is provided that includes an optical source to emit a first optical beam having a first frequency and a second optical beam having a second frequency and a dispersive element to deflect the first optical beam having the first frequency at a first angle and the second optical beam having the second frequency at a second angle. | 2020-12-24 |
20200400799 | AUTOMATED DETECTION OF SENSOR MISCALIBRATION - A vehicle control system includes various sensors. The system can include, among others, LIDAR, RADAR, SONAR, cameras, microphones, GPS, and infrared systems for monitoring and detecting environmental conditions. In some implementations, one or more of these sensors may become miscalibrated. Using data collected by the sensors, the system can detect a miscalibrated sensor and generate an indication that one or more sensors have become miscalibrated. For example, data captured by a sensor can be processed to determine an average height represented by the sensor data and compared to an average height of data captured by other sensors. Based on a difference in heights, an indication can be generated identifying a miscalibrated sensor. | 2020-12-24 |
20200400800 | PIEZOELECTRIC MICROMACHINED ULTRASONIC TRANSDUCER (PMUT) - A Piezoelectric Micromachined Ultrasonic Transducer (PMUT) device is provided. The PMUT includes a substrate and an edge support structure connected to the substrate. A membrane is connected to the edge support structure such that a cavity is defined between the membrane and the substrate, where the membrane is configured to allow movement at ultrasonic frequencies. The membrane includes a piezoelectric layer and first and second electrodes coupled to opposing sides of the piezoelectric layer. An interior support structure is disposed within the cavity and connected to the substrate and the membrane. | 2020-12-24 |
20200400801 | Method of stabilizing sonar images - A method of tracking a known object is presented, wherein a sonar image of an object which is distorted by an artifact associated with sonar imaging is compared with an image generated from a model of the object, and at least one of the two images is modified to reduce differences between them. | 2020-12-24 |
20200400802 | RECONSTRUCTION SYSTEM AND METHOD - A method for reconstructing a signal from a subset of the full signal is disclosed. In one embodiment, the method includes receiving a plurality of randomly sampled multichannel radio-frequency or in-phase and quadrature signals acquired from a physical environment including a transmitter, a propagation medium and a receiver; modelling the full signal as a matrix comprising a plurality of vector signals, wherein the full signal is expressed as a matrix product of a first matrix and a second matrix; updating the second matrix based on an objective function to produce an updated second matrix; determining a convergence parameter in dependence upon the evaluated objective function; and modifying the updated second matrix in dependence upon the convergence parameter. | 2020-12-24 |
20200400803 | PIEZOELECTRIC TRANSDUCER CONTROLLER HAVING MODEL-BASED SIDEBAND BALANCING - Various sensors, sensor controllers, and sensor control methods are provided with model-based sideband balancing. In one illustrative embodiment, a controller for a piezoelectric transducer includes a transmitter, a receiver, and a processing circuit coupled to the transmitter and receiver. The processing circuit performs calibration and echo detection, the calibration including: sensing the piezoelectric transducer's phase response as a function of frequency; deriving equivalent circuit parameters for the piezoelectric transducer from the phase response; and determining a sideband imbalance based on one or more of the equivalent circuit parameters. Once the sideband imbalance is identified, the processing circuit may perform echo-detection processing that accounts for the sideband imbalance. | 2020-12-24 |
20200400804 | AEROSTAT DEPLOYABLE FROM SONOBUOY LAUNCH CONTAINER - Systems and methods are provided for aerostat deployable from sonobuoy launch container. One embodiment is an apparatus that includes a capsule configured to launch from an aircraft and float in seawater with one or more sonobuoys. The capsule includes a receiver configured to receive sonobuoy data from the one or more sonobuoys, a transmitter configured to transmit the sonobuoy data to the aircraft, a cable configured to power the transmitter via a battery, and a reaction chamber including a reactant and configured to generate a gas from the seawater mixing with the reactant. The capsule also includes an aerostat tethered to the capsule via the cable and configured to inflate with the gas produced by the reaction chamber, and to ascend above the capsule with the transmitter to increase a distance for transmitting the sonobuoy data to the aircraft. | 2020-12-24 |
20200400805 | All-Direction High-Resolution Subsurface Imaging Using Distributed Moving Transceivers - A subsurface imaging technique using distributed sensors is introduced. Instead of monostatic transceivers employed in conventional ground penetrating radars, the proposed technique utilizes bi-static transceivers to sample the reflected signals from the ground at different positions and create a large two-dimensional aperture for high resolution subsurface imaging. The coherent processing of the samples in the proposed imaging method eliminates the need for large antenna arrays for obtaining high lateral resolution images. In addition, it eliminates the need for sampling on a grid which is a time-consuming task in imaging using ground penetration radar. Imaging results show that the method can provide high-resolution images of the buried targets using only samples of the reflected signals on a circle with the center at the transmitter location. | 2020-12-24 |
20200400806 | METHOD OF IMPROVING DISTANCE MEASUREMENT ACCURACY AND ELECTRONIC DEVICE FOR SAME - A method for improving the accuracy of measuring a distance to an object using a wireless communication signal and an electronic device therefor the same are provided. The method includes transmitting a wireless communication signal to an external object by controlling a wireless communication module, receiving a signal returned based on the transmitted wireless communication signal being reflected from the external object by controlling the wireless communication module, acquiring a first distance to the external object based on a transmission time point of the transmitted signal and a reception time point of the received signal, acquiring a second distance to the external object based on phases of the transmitted signal and the received signal by controlling the phase matching module, and estimating a distance to the external object based on the first distance and the second distance. | 2020-12-24 |
20200400807 | Method and Device for Determining the Position of Objects - In the field of microelectronics, this concerns a method that can be used to determine the position of objects with improved resolution. The subject of the present invention is to specify a method that is used to determine the position of the objects with high accuracy. The method is achieved according to the invention wherein objects in a medium
| 2020-12-24 |
20200400808 | METHOD AND SYSTEM FOR TARGET DETECTION USING MIMO RADAR - A method of sensing a target in a target detection system having processing circuitry and a multiplexer coupled to the processing circuitry and to a plurality N | 2020-12-24 |
20200400809 | EXTENDED TARGET-MATCHED CFAR DETECTOR - A radar circuit for use with a host system such as a vehicle includes a radio frequency (RF) signal generator configured to generate a predetermined RF waveform, an RF antenna connected to the RF signal generator, and an ECU which executes a method. As part of such a method, a signal generator transmits the RF waveform toward different radar target types, and receives return signatures reflected therefrom. The ECU receives the return signatures from the antenna, processes the return signatures via parallel constant false-alarm rate (CFAR) subdetectors each with defined cells under test to detect the target types as a set of detection events, merges the detection events into a merged set, and executes a control action aboard the host system responsive to the merged set. Each subdetector detects a corresponding one or more of the radar target types via corresponding detection parameters. | 2020-12-24 |
20200400810 | METHOD AND DEVICE WITH IMPROVED RADAR RESOLUTION - A method of increasing a resolution of radar data is provided. The method of training a radar resolution increase model comprises generating a high-resolution training ground truth and a low-resolution training input from original raw radar data based on information corresponding to at least one of dimensions defining the original raw radar data, and training the resolution increase model based on the high-resolution training ground truth and the low-resolution training input. A radar data processing device generates high-resolution output data from low-resolution input data based on a trained resolution increase model. | 2020-12-24 |
20200400811 | Smart-Device-Based Radar System Detecting User Gestures in the Presence of Saturation - Techniques and apparatuses are described that implement a smart-device-based radar system capable of detecting user gestures in the presence of saturation. In particular, a radar system | 2020-12-24 |
20200400812 | Monitoring System - A monitoring system includes a first sensor and a second sensor, at least one of which is a camera. A computer system coupled to the first and second sensors includes a memory and stored object types and associations between objects. The computer system is configured to infer a group association between a first and second object by retrieving an input from at least one of the sensors, inferring an interaction at a monitored location, infer possession of the second object by the first object, and terminate the inferred group association based on a subsequent inference. | 2020-12-24 |
20200400813 | RADAR IMAGE PROCESSING DEVICE AND RADAR IMAGE PROCESSING METHOD - A radar image processing device performs determination of a pixel including a ghost image and changes the value of the pixel which is determined to include the ghost image on a radar image the focus of which has been changed. | 2020-12-24 |
20200400814 | METHOD OF DETERMINATION OF ALIGNMENT ANGLES OF RADAR SENSORS FOR A ROAD VEHICLE RADAR AUTO-ALIGNMENT CONTROLLER - A method of determination of the alignment angles of two or more road vehicle ( | 2020-12-24 |
20200400815 | RADAR SYSTEM FOR DETECTING THE ENVIRONMENT OF A MOTOR VEHICLE HAVING A PLASTIC ANTENNA - A radar system for detecting the environment of a motor vehicle includes an antenna assembly comprising plastic and including one or more individual antennas for transmitting and/or receiving radar signals. A circuit board includes at least one area that is permeable by radar waves. At least one high-frequency component is coupled to one side of the circuit board and includes at least one radiating element for direct emission or receipt of radar waves in the direction of the circuit board in the least one area that is permeable by radar waves. The antenna assembly is disposed on the other side of the circuit board opposite the at least one high-frequency component. The antenna assembly includes a coupling/decoupling point disposed in the at least one area of the circuit board permeable by radar waves. | 2020-12-24 |
20200400816 | OBJECT DETECTION DEVICE - An object detection device includes: a transmission unit transmitting a first transmission wave; a reception unit receiving a first reception wave reflected by an object; a signal processing unit sampling a first processing target signal according to the first reception wave and acquiring a difference signal based on a difference between the first processing target signal for at least one sample at a certain detection timing, and the first processing target signal for a plurality of samples in at least one of first and second periods; a threshold setting unit setting a threshold as a comparison target with the value of the difference signal, based on variation in the values of the first processing target signal for the plurality of samples; and a detection unit detecting information about the object at the detection timing based on a comparison result between the value of the difference signal and the threshold. | 2020-12-24 |
20200400817 | TOWABLE SUBMERSIBLE DEVICE - A stable towable submersible device includes a rigid body that is towed at a positive pitch angle relative to the device's direction of motion. An acoustic projector housing extends vertically from the rigid body. When the rigid body rolls about its roll axis, which is tilted at the positive pitch angle, the acoustic projector rolls about the roll axis changing the acoustic projector's angle of attack relative to the direction of motion and generates a restoring force causing the acoustic projector to rotate back to a generally vertical orientation. | 2020-12-24 |
20200400818 | APPARATUS AND METHOD FOR OBSTACLE DETECTION - Apparatuses, methods and storage media associated with surface traversing by robotic apparatuses with an obstacle detection system are described herein. In some instances, the obstacle detection system is mounted on the body of the apparatus, and includes one or more light sources, to illuminate the surface to be traversed; a camera, to capture one or more images of the illuminated surface; and a processing device coupled with the camera and the light source, to process the captured one or more images, to detect, or cause to be detected, an obstacle disposed on the illuminated surface, based at least in part on a result of the processing of the images. Other embodiments may be described and claimed. | 2020-12-24 |
20200400819 | TIME OF FLIGHT DEVICE AND TIME OF FLIGHT METHOD - Time of flight device and method are provided. A light-emitting module emits a first light pulse to a sensing target, and a sensing unit receives and integrates a first reflected light pulse of the sensing target. A processing circuit reads an image parameter of the sensing target through a readout circuit. The light-emitting module emits a second light pulse to the sensing target, and the sensing unit receives a second reflected light pulse of the sensing target. The processing circuit obtains a distance parameter between the sensing target and the time of flight device according to a time when the readout circuit reads the second reflected light pulse of the sensing unit. The processing circuit obtains a reflectivity of the sensing target according to the image parameter and a look-up table, and obtains a corrected distance parameter of the sensing target by correcting the distance parameter according to the reflectivity. | 2020-12-24 |
20200400820 | Distance Detection System, Method for a Distance Detection System and Vehicle - Systems and methods disclosed herein include a distance detection system comprising an emitter unit configured to emit electromagnetic measurement pulses for distance measurements; and a receiver unit configured to capture the electromagnetic measurement pulses, characterized in that at least one of a shape, a temporal distance, and a number of the emitted measurement pulses are varied. | 2020-12-24 |
20200400821 | METHOD AND SYSTEM FOR VEHICLE ODOMETRY USING COHERENT RANGE DOPPLER OPTICAL SENSORS - A system and method for vehicle odometry using coherent range Doppler optical sensors. The system and method includes operating a Doppler light detection and ranging (LIDAR) system to collect raw point cloud data that indicates for a point a plurality of dimensions, wherein a dimension of the plurality of dimensions includes an inclination angle, an azimuthal angle, a range, or a relative speed between the point and the LIDAR system; determining a corrected velocity vector for the Doppler LIDAR system based on the raw point cloud data; and producing revised point cloud data that is corrected for the velocity of the Doppler LIDAR system. | 2020-12-24 |
20200400822 | LASER RADAR DEVICE - A laser radar device performs control to make a focus distance of transmission light equal to a measurement distance by switching a plurality of laser light sources that emit beams of oscillation light having wavelengths different from each other to switch emission directions of the transmission light while maintaining the focus position of optical antennas, and changing the wavelength of the beams of oscillation light according to the measurement distance. | 2020-12-24 |
20200400823 | WIDE DYNAMIC RANGE USING A MONOCHROME IMAGE SENSOR FOR LASER MAPPING IMAGING - Systems, methods, and devices for laser mapping and color imaging with increased dynamic range are disclosed. A system includes an emitter for emitting pulses of electromagnetic radiation and an image sensor comprising a pixel array for sensing reflected electromagnetic radiation, wherein the pixel array comprises a plurality of pixels each configurable as a short exposure pixel or a long exposure pixel. The system includes a controller comprising a processor in electrical communication with the image sensor and the emitter. The system is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises a laser mapping pattern. | 2020-12-24 |
20200400824 | DYNAMIC RANGE USING A MONOCHROME IMAGE SENSOR FOR HYPERSPECTRAL AND FLUORESCENCE IMAGING AND TOPOLOGY LASER MAPPING - Systems, methods, and devices for laser mapping and color imaging with increased dynamic range are disclosed. A system includes an emitter for emitting pulses of electromagnetic radiation and an image sensor comprising a pixel array for sensing reflected electromagnetic radiation, wherein the pixel array comprises a plurality of pixels each configurable as a short exposure pixel or a long exposure pixel. The system includes a controller comprising a processor in electrical communication with the image sensor and the emitter. The system is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises one or more of: electromagnetic radiation having a wavelength from about 513 nm to about 545 nm; electromagnetic radiation having a wavelength from about 565 nm to about 585 nm; electromagnetic radiation having a wavelength from about 900 nm to about 1000 nm; an excitation wavelength of electromagnetic radiation that causes a reagent to fluoresce; or a laser mapping pattern. | 2020-12-24 |
20200400825 | LASER MAPPING IMAGING WITH FIXED PATTERN NOISE CANCELLATION - Laser mapping imaging with reduced fixed pattern noise is disclosed. A method includes actuating an emitter to emit a plurality of pulses of electromagnetic radiation and sensing reflected electromagnetic radiation resulting from the plurality of pulses of electromagnetic radiation with a pixel array of an image sensor. The method includes reducing fixed pattern noise in an exposure frame by subtracting a reference frame from the exposure frame. The method is such that at least a portion of the plurality of pulses of electromagnetic radiation emitted by the emitter comprises a laser mapping pattern. | 2020-12-24 |
20200400826 | HYPERSPECTRAL, FLUORESCENCE, AND LASER MAPPING IMAGING WITH FIXED PATTERN NOISE CANCELLATION - Hyperspectral, fluorescence, and laser mapping imaging with reduced fixed pattern noise is disclosed. A method includes actuating an emitter to emit a plurality of pulses of electromagnetic radiation and sensing reflected electromagnetic radiation resulting from the plurality of pulses of electromagnetic radiation with a pixel array of an image sensor. The method includes reducing fixed pattern noise in an exposure frame by subtracting a reference frame from the exposure frame. The method is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises one or more of: electromagnetic radiation having a wavelength from about 513 nm to about 545 nm, from about 565 nm to about 585 nm, from about 900 nm to about 1000 nm, an excitation wavelength of electromagnetic radiation that causes a reagent to fluoresce, or a laser mapping pattern. | 2020-12-24 |
20200400827 | LASER DETECTING DEVICE - A laser detecting device able to detect and map all the contours a target object can configure and apply at least two scanning point groups on the target object. Each scanning point group includes at least two scanning points. The laser detecting device includes four light sources at different angles of incidence in relation to a diffracting element. A beam receiving element receives all the light reflected by the target object, and a central controller records emitting and receiving times of the light emitted and received. The detection beams sequentially scan the at least two scanning point groups as the central controller switches on in turn one of the four light sources as the others are powered off. Processing of data from the beam receiving element enables a three-dimensional image of the target object to be obtained. | 2020-12-24 |
20200400828 | PULSED ILLUMINATION IN A HYPERSPECTRAL, FLUORESCENCE, AND LASER MAPPING IMAGING SYSTEM - Pulsed hyperspectral, fluorescence, and laser mapping imaging in a light deficient environment is disclosed. A system includes an emitter for emitting pulses of electromagnetic radiation and an image sensor comprising a pixel array for sensing reflected electromagnetic radiation. The system includes a controller configured to synchronize timing of the emitter and the image sensor. The system is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises one or more of a hyperspectral emission, a fluorescence emission, or a laser mapping pattern. | 2020-12-24 |
20200400829 | MINIMIZING IMAGE SENSOR INPUT/OUTPUT IN A PULSED HYPERSPECTRAL IMAGING SYSTEM - Pulsed hyperspectral imaging in a light deficient environment is disclosed. A system includes an emitter for emitting pulses of electromagnetic radiation and an image sensor comprising a pixel array for sensing reflected electromagnetic radiation. The system includes a plurality of bidirectional pads comprising an output state for issuing data and an input state for receiving data. The system includes a controller configured to synchronize timing of the emitter and the image sensor. The system is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises electromagnetic radiation having a wavelength from about 513 nm to about 545 nm, from about 565 nm to about 585 nm, or from about 900 nm to about 1000 nm. | 2020-12-24 |
20200400830 | MINIMIZING IMAGE SENSOR INPUT/OUTPUT IN A PULSED LASER MAPPING IMAGING SYSTEM - Minimizing image sensor input/output pads in a pulsed laser mapping imaging system is disclosed. A system includes an emitter for emitting pulses of electromagnetic radiation and an image sensor comprising a pixel array for sensing reflected electromagnetic radiation. The system includes a plurality of bidirectional pads comprising an output state for issuing data and an input state for receiving data. The system includes a controller configured to synchronize timing of the emitter and the image sensor. The system is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises a laser mapping pattern. | 2020-12-24 |
20200400831 | CONTROLLING INTEGRAL ENERGY OF A LASER PULSE IN A LASER MAPPING IMAGING SYSTEM - Controlling integral energy of a light pulse in a laser mapping imaging system is disclosed. A system includes an emitter for emitting pulses of electromagnetic radiation and an image sensor comprising a pixel array for sensing reflected electromagnetic radiation. The system includes an electromagnetic sensor for sensing energy emitted by the emitter. The system includes a controller configured to synchronize timing of the emitter and the image sensor. The system is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter is a laser mapping pattern. | 2020-12-24 |
20200400832 | CONTROLLING INTEGRAL ENERGY OF A LASER PULSE IN A HYPERSPECTRAL,FLUORESCENCE, AND LASER MAPPING IMAGING SYSTEM - Controlling integral energy of a light pulse in a hyperspectral, fluorescence, and laser mapping imaging system is disclosed. A system includes an emitter for emitting pulses of electromagnetic radiation and an image sensor comprising a pixel array for sensing reflected electromagnetic radiation. The system includes an electromagnetic sensor for sensing energy emitted by the emitter. The system includes a controller configured to synchronize timing of the emitter and the image sensor. The system is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises one or more of a hyperspectral emission, a fluorescence emission, or a laser mapping pattern. | 2020-12-24 |
20200400833 | OFFSET ILLUMINATION OF A SCENE USING MULTIPLE EMITTERS IN A LASER MAPPING IMAGING SYSTEM - Offset illumination using multiple emitters in a fluorescence imaging system is described. A system includes an emitter for emitting pulses of electromagnetic radiation and an image sensor comprising a pixel array for sensing reflected electromagnetic radiation. The emitter comprises a first emitter and a second emitter for emitting different wavelengths of electromagnetic radiation. The system is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises a laser mapping pattern. | 2020-12-24 |
20200400834 | OFFSET ILLUMINATION OF A SCENE USING MULTIPLE EMITTERS IN A FLUORESCENCE IMAGING SYSTEM - Offset illumination using multiple emitters in a fluorescence imaging system is described. A system includes an emitter for emitting pulses of electromagnetic radiation and an image sensor comprising a pixel array for sensing reflected electromagnetic radiation. The emitter comprises a first emitter and a second emitter for emitting different wavelengths of electromagnetic radiation. The system is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises electromagnetic radiation having a wavelength from about 770 nm to about 790 nm. | 2020-12-24 |
20200400835 | OFFSET ILLUMINATION OF A SCENE USING MULTIPLE EMITTERS IN A HYPERSPECTRAL, FLUORESCENCE, AND LASER MAPPING IMAGING SYSTEM - Offset illumination using multiple emitters in a fluorescence imaging system is described. A system includes an emitter for emitting pulses of electromagnetic radiation and an image sensor comprising a pixel array for sensing reflected electromagnetic radiation. The emitter comprises a first emitter and a second emitter for emitting different wavelengths of electromagnetic radiation. The system is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises one or more of a hyperspectral emission, a fluorescence emission, and/or a laser mapping pattern. | 2020-12-24 |
20200400836 | METHOD OF DETERMINING THE VERTICAL PROFILE OF THE WIND SPEED UPSTREAM FROM A WIND TURBINE EQUIPPED WITH A LIDAR SENSOR - The invention relates to a method of determining the vertical profile of the wind speed upstream from a wind turbine (1), wherein wind speed measurements are performed by means of a LiDAR sensor (2), then the exponent α of the power law is determined by means of an unscented Kalman filter and measurements, and this exponent α is applied to the power law in order to determine the vertical wind speed profile. | 2020-12-24 |
20200400837 | Adaptive Despreading and Geolocation 1 of Civil Beacons and GNSS Signals - A receiver processes Global Navigation Satellite System (GNSS) signals transmitted from satellites and non-satellite signals transmitted from beacons. The receiver comprises an adaptive despreader configured for adaptively despreading a channelizer output signal-to extract received navigation signals and generate baseband symbol data therefrom. The channelizer output signal comprises channelized received navigation signals, each comprising a spreading code that repeats every baseband symbol. A copy-aided analyzer is communicatively coupled to the adaptive despreader and configured for determining geo-observables from the baseband symbol data of at least one received navigation signal. A positioning navigation and timing (PNT) computation element is communicatively coupled to the copy-aided analyzer and configured for employing the geo-observables to differentiate between the at least one received navigation signal and at least one signal transmitted by at least one of a GNSS satellite, a spoofer, a jammer, a beacon, a repeater, and a pseudolite. | 2020-12-24 |
20200400838 | Adaptive Despreading of Civil Beacons and GNSS Signals Using a Channelized Vector Processing Architecture - A receiver processes Global Navigation Satellite System (GNSS) signals transmitted from satellites and non-satellite signals transmitted from beacons. The receiver comprises a symbol-rate synchronous vector channelizer configured to downconvert and channelize a plurality of received navigation signals to produce a vector signal with a sample rate equal to a baseband symbol rate of at least one navigation signal, less any offset due to Analog-to-Digital Converter clock error. A despreader is communicatively coupled to the channelizer and configured to exploit properties of baseband symbol data in the navigation signal to blindly despread the vector signal and extract the plurality of received navigation signals. | 2020-12-24 |
20200400839 | SYSTEM AND METHOD TO TRANSPORT GPS SIGNALS AND RADIO FREQUENCY SIGNALS OVER A FIBER OPTIC CHANNEL WITH POWER SUPPLIED OVER THE FIBER OPTIC CHANNEL - A GPS system within a structure. The system comprises a front-end unit (FEU) and a back-end unit (BEU); FEU receives a GPS signal, amplifying it if required and forwarding the signal to the BEU for further processing (and amplification if required) for determining the location. The BEU and FEU cooperate to optimize the received GPS signal before processing, exchanging control and operating parameters information related to receiving and processing the GPS signal. The BEU also supplies power to the FEU. Advantageously, exchange of signals and power between the BEU and FEU occurs over one or more fiber optic channels or conductors. Certain embodiments employ multiplexing and demultiplexing schemes to reduce the number of discrete signal paths between the FEU and BEU. Additionally, the system embodies a control algorithm to ensure adequate GPS signal strength for processing and also shuts the system down upon signal loss or degradation. | 2020-12-24 |
20200400840 | GLOBAL POSITIONING SYSTEM ASSISTED CRUISE CONTROL - A system for controlling the speed of a vehicle. The system includes a satellite receiver configured to determine a satellite navigation-based speed of the vehicle and one or more speed sensors configured to determine a sensor-based speed of the vehicle. The system further includes a controller having one or more electronic processors and in communication with the satellite receiver and the one or more speed sensors. The controller is configured to receive a desired set speed from a user, determine an actual speed of the vehicle based on the satellite navigation-based speed and the sensor-based speed, and control the vehicle such that the actual speed of the vehicle is equal to the desired set speed. | 2020-12-24 |
20200400841 | SYSTEM AND METHOD FOR CALCULATING PROTECTION LEVELS FOR VELOCITY AND COURSE OVER GROUND - In an example embodiment, a GNSS receiver may calculate protection levels for velocity and course over ground computed at a GNSS receiver. Specifically, the GNSS receiver may obtain Doppler measurements and variance measurements based on satellite signals received from at least five GNSS satellites. The GNSS receiver may utilize a least squares method to calculate the velocity states (e.g., x-velocity state, y-velocity state, and z-velocity state) and the clock bias for the GNSS receiver. The GNSS receiver may calculate the slope for each Doppler measurement on each velocity state. The GNSS receiver may then select the maximum slope for each velocity state and scale up the maximum slopes by a non-centrality parameter to calculate the protection level for each velocity state in the ECEF frame. The GNSS receiver may convert the velocity protection levels to NEU velocity protection levels to then calculate a protection level for course over ground. | 2020-12-24 |
20200400842 | RADIATION DETECTION SYSTEM WITH SURFACE PLASMON RESONANCE DETECTION AND RELATED METHODS - A radiation detection system may include a radiation source, and a surface plasmon resonance (SPR) radiation detector. The SPR radiation detector may include a structure, a surface plasmon support material on portions of the structure and configured to receive radiation from the radiation source that initiates a surface plasmon at an interface between the structure and the surface plasmon support material, and a probing device coupled to the structure and configured to detect the surface plasmon. | 2020-12-24 |
20200400843 | RADIATION DETECTION PANEL, RADIATION DETECTOR, AND METHOD FOR MANUFACTURING RADIATION DETECTION PANEL - According to one embodiment, a radiation detection panel includes a substrate, a plurality of photoelectric conversion elements, an insulating layer, a protective layer, a bonding layer, a scintillator, and a moisture-proof layer. The photoelectric conversion elements are provided on one surface of the substrate. The insulating layer is provided on the photoelectric conversion elements and is light transmissive. The protective layer is provided at least on the insulating layer. The bonding layer is provided between the insulating layer and the protective layer, includes a material having at least one of a reactive group that chemically bonds to an inorganic material and a reactive group that chemically bonds to an organic material, and is light transmissive. The scintillator is provided on the protective layer and covers the plurality of photoelectric conversion elements. The moisture-proof layer covers at least the scintillator. | 2020-12-24 |
20200400844 | GAMMA DETECTION SYSTEM INCORPORATING ELECTRONIC PROBE COLLIMATION - An instrument and software methodology to detect a radioactive source and incorporates the following:
| 2020-12-24 |
20200400845 | DEEP WATER HIGH RESOLUTION OBJECT DETECTION - A seabed object detection system is provided. The system can include a receiver array including streamers. The system can include a plurality of receivers coupled with the streamers. The system can include a receiver array cross-cable to couple with the first streamer and to couple with the second streamer. The receiver array cross-cable can be disposed at a first depth of a body of water. The system can include a first diverter and a second diverter coupled with the receiver array cross-cable. The system can include a source array including a first source and a second source. The source array can be coplanar to the receiver array. The system can include a source array cross-cable to couple with the first source and to couple with the second source, the source array cross-cable disposed at a second depth of the body of water. | 2020-12-24 |
20200400846 | METHOD FOR SEISMIC DATA ACQUISITION AND PROCESSING - Methods for separating the unknown contributions of two or more sources from a commonly acquired set of wavefield signals based on varying parameters at the firing time, location and/or depth of the individual sources in a lateral 2D plane. | 2020-12-24 |
20200400847 | SYSTEMS AND METHODS TO ENHANCE 3-D PRESTACK SEISMIC DATA BASED ON NON-LINEAR BEAMFORMING IN THE CROSS-SPREAD DOMAIN - The disclosure provides systems and methods to enhance pre-stack data for seismic data analysis by: sorting the reflection seismic data acquired from cross-spread gathers into sets of data sections; performing data enhancement on the sets of data sections to generate enhanced traces by: (i) applying forward normal-moveout (NMO) corrections such that arrival times of primary reflection events become more flat, (ii) estimating beamforming parameters including a nonlinear traveltime surface and a summation aperture, (iii) generating enhanced traces that combine contributions from original traces in the sets of data sections, and (iv) applying inverse NMO corrections to the enhanced traces such that temporal rearrangements due to the forward NMO corrections are undone. | 2020-12-24 |
20200400848 | MARINE DIFFRACTION SURVEY FOR SMALL OBJECT DETECTION - A seabed object detection system is provided. The system can include a receiver array. The receiver array can include a plurality of receivers disposed on a plurality of streamers. The plurality of streamers can include a central port side streamer, a central starboard side streamer, an auxiliary port side streamer and an auxiliary starboard side streamer. The system can include a source array. The source array can include a plurality of sources. The plurality of sources can include a central port side source, a central starboard side source, an auxiliary port side source, and an auxiliary port side streamer. | 2020-12-24 |
20200400849 | INTERLEAVED MARINE DIFFRACTION SURVEY - A seabed object detection system is provided. The system can include a receiver array. The receiver array can include a plurality of receivers disposed on a plurality of streamers. The plurality of streamers can include a central port side streamer, a central starboard side streamer, an auxiliary port side streamer and an auxiliary starboard side streamer. The system can include a source array. The source array can include a plurality of sources. The plurality of sources can include a central port side source, a central starboard side source, an auxiliary port side source, and an auxiliary port side streamer. The source array towed during a first pass can define a first path. The source array towed during a second pass can define a second path. The first path can be interleaved with the second path such that the first path overlaps the second path. | 2020-12-24 |
20200400850 | MARINE OBJECT DETECTION SURVEY HAVING SOURCE CROSS CABLE - A seabed object detection system is provided. The system can include a receiver array including a first streamer and a second streamer. The system can include a first plurality of receivers coupled with the first streamer and a second plurality of receivers coupled with the second streamer. The system can include a receiver array cross-cable to couple with the first streamer and the second streamer. The system can include a source array including a first source and a second source. The system can include a first source cable coupled with the first source and a second source cable coupled with the second source. The system can include a source array cross-cable to couple with the first source cable and the second source cable. The system can include a first lateral cable to couple with a first diverter and second lateral cable to couple with a second diverter. | 2020-12-24 |
20200400851 | MARINE SURVEY SOURCE FIRING CONTROL - A seabed object detection system is provided. The system can include a source array. The source array can include a first source and a second source. The system can include a data processing system including one or more processors. The data processing system can determine a position of the first source and can identify a first firing time of the second source. The data processing system can initiate a first source shot of the first source at a known position and the second source at a known time. The data processing system can determine a target position and estimated position for the first source. The data processing system can determine a second position of the first source based on a difference between the target position and the estimated position. The data processing system can initiate a second source shot of the first source at a known position. | 2020-12-24 |
20200400852 | MARINE SURVEY SOURCE FIRING CONTROL - A seabed object detection system is provided. The system can include a source array. The source array can include a first source and a second source. The system can include a data processing system including one or more processors. The data processing system can determine a position of the first source and can identify a first firing time of the second source. The data processing system can initiate a first source shot of the first source at a known position and the second source at a known time. The data processing system can determine a target position and estimated position for the first source. The data processing system can determine a second position of the first source based on a difference between the target position and the estimated position. The data processing system can initiate a second source shot of the first source at a known position. | 2020-12-24 |
20200400853 | FLUXGATE DETECTOR FOR BURIED AND ABANDONED CHEMICAL WEAPONS - A fluxgate detector for buried and abandoned chemical weapons is provided, comprising: a probe for sensing an external magnetic field, comprising a probe input and a probe output; an excitation module electrically connected to the probe input for inputting an excitation signal into the probe; a frequency selection module electrically connected to the probe output for isolating a second harmonic signal in an induced voltage generated by the probe; and a signal acquisition module electrically connected to the frequency selection module. The second harmonic signal in the induced voltage can be isolated by the frequency selection module, transmitted to the signal acquisition module, and converted to an intensity of the magnetic field by the signal acquisition module. The substance detected can be identified according to the intensity of the magnetic field, so that the buried ACWs can be found efficiently and accurately. | 2020-12-24 |
20200400854 | RECEIVING COMPENSATION APPARATUS FOR AIRBORNE TRANSIENT ELECTROMAGNETIC METHOD - This application relates to a receiving compensation apparatus for an airborne transient electromagnetic method. The receiving compensation apparatus for the airborne transient electromagnetic method in this application includes a received coil, a transmitting coil, compensation coils, and at least one compensation magnetic core, where the transmitting coil is disposed on the periphery of the received coil, the compensation magnetic core is disposed on the transmitting coil, and the compensation coils are disposed on the compensation magnetic core. | 2020-12-24 |
20200400855 | DETECTION SYSTEM AND DETECTION METHOD - A detection system and detection method are disclosed herein, the detection system includes a first detector, a second detector, an actuator and a processing device. The first detector and the second detector detect a target in a first detection range and a second detection range respectively, to generate a first detection signal and a second detection signal. The processing device establishes a detection movement path according to the first detection signal and the second detection signal, compares the detection movement path with a plurality of historical movement paths to select the historical movement path that best matches the detection movement path from the historical movement paths, and transmits a driving signal to the actuator in a third detection range when the processing device predicts that the target moves to the third detection range according to the best matching historical movement path. | 2020-12-24 |
20200400856 | DETECTING AND COMPENSATING FOR MAGNETIC INTERFERENCE IN ELECTROMAGNETIC (EM) POSITIONAL TRACKING - A method includes using an electromagnetic (EM) tracking system to track a tangible object, detecting a presence of interference with a magnetic field generated by the EM tracking system, and compensating for the interference. A system includes an EM tracking transmitter, an EM tracking receiver, and a processor based apparatus in communication with the EM tracking transmitter and the EM tracking receiver. The processor based apparatus is configured to execute steps including using the EM tracking transmitter and the EM tracking receiver to implement an EM tracking system. A storage medium storing one or more computer programs is also provided. | 2020-12-24 |
20200400857 | Imaging Radiation Detector Array - An imaging radiation detection system, useful in detecting and localizing radioactive materials, may include a large number of particle detectors stacked in a two-dimensional array. The array may include protruding detectors interleaved with recessed detectors, in which each detector is oriented in a different direction. The array may have a checkerboard-type arrangement of protruding and recessed detectors. Detection data from the recessed detectors may include a radiographic image indicating the distribution of radioactive sources in view. Embodiments with high detection efficiency and large field of view can rapidly detect and localize even well-shielded threat sources at substantial distances. | 2020-12-24 |
20200400858 | Predicting Contamination and Clean Fluid Properties From Downhole and Wellsite Gas Chromatograms - A method may comprise forming a data matrix, extracting chromatographs of a mud filtrate and a formation fluid, extracting concentration profiles of the mud filtrate and the formation fluid, and decomposing a data set on an information handling machine using a bilinear model. A system may comprise a downhole fluid sampling tool and an information handling tool. The downhole fluid sampling tool may comprise one or more multi-chamber sections, one or more fluid module sections, one or more gas chromatographers, wherein the one or more gas chromatographers are disposed in the one or more fluid module sections, and an information handling system. | 2020-12-24 |
20200400859 | METHODS AND APPARATUS FOR REDUCING SPECULAR RETURN FROM WIDE FIELD-OF-VIEW REFRACTIVE OPTICS - An optical imaging system including refractive optics and a blocking component. The refractive optical having an entrance aperture and configured to receive optical radiation via an operational aperture, to focus the optical radiation onto a focal plane to form a telecentric image plane co-located with the focal plane, the operational aperture being co-located with the entrance aperture, having a diameter less than half a diameter of the entrance aperture, and being offset from a primary optical axis that bisects the entrance aperture by at least a radius of the entrance aperture, and a blocking component located at the entrance aperture on an opposite side of the primary optical axis from the operational aperture. The blocking component being configured to block the optical radiation from exiting the refractive optics via a region of the entrance aperture where the blocking component is located. | 2020-12-24 |
20200400860 | ANTI-GLARE FILM AND DISPLAY APPARATUS | 2020-12-24 |
20200400861 | MULTI-LAYER THIN FILM STACK FOR DIFFRACTIVE OPTICAL ELEMENTS - An optical element may include a substrate. The optical element may include a first anti-reflectance structure for a particular wavelength range formed on the substrate. The optical element may include at least one layer disposed on a portion of the first anti-reflectance structure. The optical element may include a second anti-reflectance structure for the particular wavelength range formed on the at least one layer. A depth between a first surface of the first anti-reflectance structure and a second surface of the second anti-reflectance structure, a first index of refraction of the first anti-reflectance structure, a second index of refraction of the second anti-reflectance structure, and a third index of refraction of the at least one layer may be selected to form a diffractive optical element associated with a particular phase delay for the particular wavelength. | 2020-12-24 |
20200400862 | BLACK STRUCTURE AND SELF-LUMINOUS IMAGE DISPLAY DEVICE COMPRISING SAME - A black structure includes a black layer and a light transmitting portion in a same plane, in which the black layer has a fine uneven structure having a period of 380 nm or less on a surface of the black layer on the viewing side, and a surface of the black layer opposite to the surface having the fine uneven structure is bonded to a base material. A self-luminous image display device includes a self-luminous image display panel and the black structure. | 2020-12-24 |
20200400863 | DIFFUSER PLATE - Provided is a diffuser plate that makes it possible to mitigate unevenness of luminance or unevenness of color while suppressing speckle noise of transmitted light or reflected light. The diffuser plate of the present invention includes a microlens array having a structure that creates an optical path length difference for incident light or reflected light, the microlenses having the same effective diameter. The microlens array constitutes a basic block structure in which periodic arrangement is provided with a period of an integer multiple of the effective diameter, a two-dimensional second periodic structure having a period that is N times the period of the microlens array in the basic periodic structure is configured by a repetitive arrangement of the basic blocks, and the microlenses are set to create an optical path length difference based upon a specific arrangement within the basic block structure. | 2020-12-24 |
20200400864 | OPTICAL FILM, OPTICAL BARRIER FILM, AND BACKLIGHT UNIT - An optical film including a first film substrate, and a light diffusion layer that is formed on the first film substrate, wherein the light diffusion layer contains a binder resin and light-diffusing particles, of the light-diffusing particles, 10% or more by number of the light-diffusing particles form an uneven structure on a surface of the light-diffusing layer by the 10% or more of the light-diffusing particles protruding more than a surrounding area not containing any light-diffusing particles, and of the light diffusing particles which cause the binder resin to be protruded and have a protruded portion, 90% or more by number of the protruded portion of light-diffusing particles is covered by the binder resin. | 2020-12-24 |
20200400865 | HIGH TRANSMISSION LIGHT CONTROL FILM - A light control film, comprises a light input surface and alight output surface opposite the light input surface. Alternating transmissive regions and absorptive regions are disposed between the light input surface and the light output surface. The absorptive regions have an aspect ratio of at least 30 and the alternating transmissive region and absorptive regions have a relative transmission at a viewing angle of 0 degrees of at least 75%. | 2020-12-24 |
20200400866 | DISPLAY DEVICE AND FABRICATION METHOD OF THE SAME - A display device includes a cover structure, a light guide plate, and a display panel. The cover structure includes an anti-glare layer, a light blocking frame, and an adhesive layer. The anti-glare layer has a display region and an non-display region. The light blocking frame surrounds a receiving space. An orthogonal projection of the light blocking frame on the anti-glare layer is located within the non-display region. An adhesive layer is located in the receiving space of the light blocking frame. The light guide plate is located on the surface of the adhesive layer facing away from the anti-glare layer. The display panel is adjacent to the light guide plate. | 2020-12-24 |
20200400867 | TECHNIQUES FOR SELECTIVE VIEWING OF PROJECTED IMAGES - An entertainment enhancement system includes an infrared projection system configured to output an infrared image to a target surface. The infrared projection system includes a controller configured to coordinate projection of the infrared image with a separate action by generating instructions for projecting the infrared image based on data received by the controller indicative of an active status of the separate action and an infrared emitter configured to receive the generated instructions and emit the infrared image to the target surface. The system also includes a viewing device configured to be wearable by a user. The viewing device includes at least one lens and a filter assembly configured to shift the infrared image from an infrared frequency to a visible light frequency such that the infrared image is viewable on the target surface via the viewing device. | 2020-12-24 |
20200400868 | COLOR VISION CORRECTION LENS AND OPTICAL COMPONENT - A color vision correction lens that corrects color vision of a user includes: a resin layer having a first surface facing an eye of the user and a convex surface which is an example of a second surface on an opposite side of the first surface; and a reflective layer on the convex surface side of the resin layer. The resin layer contains a color material which selectively absorbs light in a first wavelength band. The reflective layer selectively reflects light in a second wavelength band. The first wavelength band and the second wavelength band overlap at least partially. | 2020-12-24 |
20200400869 | IMAGE PROJECTION DEVICE AND HEAD-UP DISPLAY DEVICE - The present disclosure relates to an image projection device includes a display unit to emit a display light representing a display image in a form of either of s-polarized light and p-polarized light and an optical laminate that the display light emitted from the display unit is incident on. The optical laminate includes at least two substrates and an optical layer to change a polarization direction of incident light by 90°. The display unit has a polarization direction converter capable of freely switching between s-polarized light and p-polarized light. | 2020-12-24 |
20200400870 | CUSTOMIZED POLYMER/GLASS DIFFRACTIVE WAVEGUIDE STACKS FOR AUGMENTED REALITY/MIXED REALITY APPLICATIONS - A diffractive waveguide stack includes first, second, and third diffractive waveguides for guiding light in first, second, and third visible wavelength ranges, respectively. The first diffractive waveguide includes a first material having first refractive index at a selected wavelength and a first target refractive index at a midpoint of the first visible wavelength range. The second diffractive waveguide includes a second material having a second refractive index at the selected wavelength and a second target refractive index at a midpoint of the second visible wavelength range. The third diffractive waveguide includes a third material having a third refractive index at the selected wavelength and a third target refractive index at a midpoint of the third visible wavelength range. A difference between any two of the first target refractive index, the second target refractive index, and the third target refractive index is less than 0.005 at the selected wavelength. | 2020-12-24 |
20200400871 | DISPLAY DEVICE - According to one embodiment, a display device displays a color gamut defined by connecting a first defined color in first chromaticity coordinates, a second defined color in second chromaticity coordinates, and a third defined color in third chromaticity coordinates. An illumination device of the display device includes green, blue and red lasers. The green and blue lasers emit light of the second and third defined colors, and red laser emits light of a color in fourth chromaticity coordinates. Each of the pixels displays a color including the first defined color by mixing light in the fourth chromaticity coordinates and the second defined color. | 2020-12-24 |
20200400872 | ELECTRONIC DEVICE - An electronic device includes a circuit board and a metal reflective structure. The metal reflective structure is disposed on the circuit board. The metal reflective structure includes a protective layer and a metal layer. The metal layer is located between the protective layer and the circuit board. The protective layer includes transparent materials. | 2020-12-24 |
20200400873 | BACKLIGHT MODULE AND DISPLAY DEVICE - The present invention discloses to a backlight module and a display device. A flexible printed circuit board is connected to a step of a plastic frame, so that the flexible printed circuit board can be prevented from being adhered to a light guide plate, and thus a distance between a light source and an iron frame can be reduced, and heat dissipation performance of the backlight module can be enhanced. A blocking wall is disposed on each of two side faces of a light-emitting unit perpendicular to the plastic frame, and a reflective film is disposed on a side surface of the blocking wall facing the light-emitting unit, so that light emitted from the light-emitting unit can be collected and reflected, and a greater amount of light can enter the light guide plate from the light-emitting unit, enhancing luminous efficiency of the backlight module, and reducing manufacturing costs. | 2020-12-24 |
20200400874 | LIGHT SOURCE MEMBER AND DISPLAY DEVICE HAVING THE SAME - A light source member including a substrate, and a plurality of unit light source cells disposed on the substrate and arranged in a matrix, each of the unit light source cells including a light source driving electrode disposed on the substrate, a light source disposed on the substrate and electrically connected to the light source driving electrode, an organic layer disposed on the substrate and exposing the light source and at least a part of the light source driving electrode, the organic layer having an upper surface including a concavo-convex pattern, and a heat dissipation layer disposed on the organic layer and contacting the light source driving electrode. | 2020-12-24 |
20200400875 | LED SIDE-LUMINESCENCE PANEL LAMP - The present invention discloses a side-emitting LED panel lamp, where the side-emitting LED panel lamp includes a frame, a light-emitting element, a driving power supply, a backboard, a pressing bar, a light guide plate, and a diffusion plate; the light-emitting element, the driving power supply, and the backboard are disposed on a lower surface of the frame; the pressing bar is disposed around the backboard and covers the driving power supply; the driving power supply is electrically connected to the light-emitting element; the light guide plate is disposed on a lower surface of the backboard; the light guide plate is flush with the light-emitting element; and the diffusion plate is disposed on a lower surface of the light guide plate. In the present invention, all the components are integrally assembled. When used, the side-emitting LED panel lamp can be directly connected to a mains power supply, so as to avoid lamp damage caused because the light-emitting element does not match the driving power supply due to secondary adjustment, therefore facilitating a direct operation of a user. | 2020-12-24 |
20200400876 | POLARIZATION-MAINTAINING MULTI-CORE FIBER - A polarization-maintaining multi-core fiber includes a plurality of fiber core areas and a main outer cladding. The fiber core areas include one central fiber core area, and two or more than two outer fiber core areas equidistantly and uniformly arranged around the central fiber core area that is a polarization-maintaining fiber core area. Each outer fiber core area includes a fiber core and an inner cladding surrounding a core layer. A portion outside the fiber core areas is the main outer cladding. The fiber can greatly enhance spectral efficiency of an optical transmission system, and improve fiber communication capacity. The arrangement of the polarization-maintaining fiber core area provides a waveguide structure with a function of maintaining polarized light, which can be used for transmission of local light. | 2020-12-24 |
20200400877 | ARRAY-TYPE POLARIZATION-MAINTAINING MULTI-CORE FIBER - An array-type polarization-maintaining multi-core fiber includes a main outer cladding, fiber core units, and stress units. The fiber core units and the stress units are arranged to form a unit array including one central unit and any unit in the unit array being equidistantly arranged from adjacent units thereof. Provided is at least one pair of stress units, each pair of stress units being arranged symmetrical about one fiber core unit to form a polarization-maintaining fiber core unit. The fiber core units each include a fiber core and an inner cladding surrounding a core layer. A portion outside the fiber core units and the stress units is the main outer cladding. The fiber can greatly enhance spectral efficiency of an optical transmission system, and improve fiber communication capacity. | 2020-12-24 |
20200400878 | MULTIPLE STAGE BRAGG GRATINGS IN MULTIPLEXING APPLICATIONS - Aspects described herein include an optical apparatus comprising at least a first Bragg grating of a first stage. The first Bragg grating is configured to transmit a first two wavelengths and to reflect a second two wavelengths of a received optical signal. The optical apparatus further comprises a second Bragg grating of a second stage. The second Bragg grating is configured to transmit one of the first two wavelengths and to reflect the other of the first two wavelengths. The optical apparatus further comprises a third Bragg grating of the second stage. The third Bragg grating is configured to transmit one of the second two wavelengths and to reflect the other of the second two wavelengths. | 2020-12-24 |
20200400879 | OPTICAL FIBER - An optical fiber according to an embodiment of the present disclosure includes a core and a cladding which surrounds the core. The cladding includes an inner cladding layer which surrounds the core and an outer cladding layer which surrounds the inner cladding layer. A maximum value Δn1max of a relative refractive index difference of the core, a minimum value Δn2min of a relative refractive index difference of the inner cladding layer, and a maximum value Δn3max of a relative refractive index difference of the outer cladding layer satisfy a relationship of Δn2min<Δn3max<Δn1max. A residual stress σ(r) at a radial position r satisfies |dσ(r)/dr|≤30 MPa/μm in the cladding. | 2020-12-24 |
20200400880 | MOUNTED HOLLOW-CORE FIBER ARRANGEMENT - A mounted hollow-core fiber arrangement includes a hollow-core fiber having a microstructure, and a mount arrangement including a plurality of mounting contacts configured to apply a force to an outer layer of the hollow-core fiber. A portion of the hollow-core fiber is located in a receiving region of the mount arrangement. The plurality of mounting contacts are positioned around the receiving region. The mounting contacts are distributed around the receiving region, the distribution of the mounting contacts corresponding to a distribution of features of the microstructure of the hollow-core fiber. The mounted hollow core fiber can be used in a radiation source apparatus for providing broadband radiation. | 2020-12-24 |
20200400881 | METHOD FOR COATING AN OPTICAL FIBRE AND AN OPTICAL FIBRE COMPRISING THE SAME - A method for applying a water-absorbing polymer coating onto an optical fibre having a core, a cladding and at least a primary coating includes coating the optical fibre with an organic solvent-free radiation curable coating composition and initiating polymerization. The polymerization may be initiated with UV light. The coated optical fibre may be combined in a tubular or flat sheath, e.g., as a multi-fibre cable or ribbon. The coated optical fibre may be a coloured coated optical fibre. | 2020-12-24 |
20200400882 | OPTICAL FIBER - An optical fiber includes: a core portion made of glass; and a cladding portion made of glass, having a refractive index lower than the refractive index of the core portion, and positioned on an outer periphery of the core portion. Further, the cladding portion has an outer diameter smaller than 100 μm, and the core portion has a relative refractive-index difference of 0.32% to 0.40% with respect to the cladding portion. | 2020-12-24 |
20200400883 | PHOTONIC INTEGRATED CIRCUIT WITH ENCAPSULATED REFERENCE ARM - A photonic integrated circuit for an interferometric sensor includes a first waveguide called sensitive arm wherein a first portion of the light radiation is propagated, the sensitive arm being exposed to a first ambient medium and to at least one compound to be detected inducing a modification of the local refractive index perceived by the evanescent part of the electromagnetic field of the first portion of the light radiation, and a second waveguide called reference arm wherein a second portion of the light radiation is propagated, an encapsulation layer encapsulating the reference arm, the encapsulation layer being impermeable to the compound or compounds to be detected, so that the reference arm is exposed only to a second ambient medium, substantially of the same nature as the first ambient medium and without the compound to be detected and interferometric sensor comprising a photonic integrated circuit according to the invention. | 2020-12-24 |
20200400884 | INTEGRATED LASER TRANSCEIVER - A method, and apparatus provided thereby, includes providing a substrate and placing an integrated laser on the substrate. A first cladding layer surrounds the integrated laser and includes a laser optical coupler aligned with an output of the laser. The laser optical coupler includes silicon and the laser includes a III-V compound semiconductor. The output of the laser is spaced apart from the laser optical coupler by a gap of less than or equal to 500 nanometers. An optical waveguide is positioned on the first cladding layer and in optical communication with the laser optical coupler. | 2020-12-24 |
20200400885 | Optical Spectrum Shaper and Optical Signal Monitor Using Same - The present invention implements an optical spectral shaper that is compact even if a number of input/output ports increases. The present invention provides a spatial light modulator, including: an optical waveguide front end that includes an input side waveguide portion which emits each signal light at a different angle while expanding a beam diameter of the signal light, and an output side waveguide portion that wave-guides each of the inputted signal lights, and couples the signal lights with a plurality of output fibers respectively; a spatial light modulator that changes the phase of each signal light by controlling the phase pattern of the plurality of pixels and emits the signal light, and the spatial light modulator in which a specific phase pattern is set for each pixel region to which each signal light enters; and an optical element group that is disposed so that each of the signal lights emitted from the optical waveguide front end is collected at a different pixel position on the spatial light modulator, and the light emitted from the spatial light modulator is coupled with the optical waveguide front end. | 2020-12-24 |
20200400886 | ELASTOMERIC LIGHTGUIDE COUPLING FOR CONTINUOUS POSITION LOCALIZATION IN 1,2, AND 3D - Provided are three dimensional, stretchable, optical sensor networks that can localize deformations. The devices described herein are suitable for uses in soft robots to determine the position of external contact, such as touching, and possibly internal deformations that may be caused by actuation. Sensor networks of the present disclosure contain a substrate, such as a 3D lattice, and cores having a cladding, such as air. Light passes through the cores and upon deformation of the substrate, cores may come into contact, allowing light to couple between cores due to frustrated total internal reflection. The resulting changes in intensity in the cores can be used to determine the placement and magnitude of deformation. | 2020-12-24 |
20200400887 | SURFACE PLASMON-OPTICAL-ELECTRICAL HYBRID CONDUCTION NANO HETEROSTRUCTURE AND PREPARATION METHOD THEREFOR - The present invention provides a surface plasmon-optical-electrical hybrid conduction nano heterostructure and a preparation method therefor. The structure includes an exciting light source, a semiconductor nano-structure array, a two-dimensionalplasmonic micro-nano structure, a sub-wavelength plasmon polariton guided wave, an emergent optical wave, a one-dimensionalplasmonic micro-nano structure, a wire, a metal electrode, a conductive substrate, a probe molecule, an atomic-force microscopic conductive probe and a voltage source. The method achieves a semiconductor seed crystal with controllable distribution and density by controlling free metal ions, air, water or oxygen on a metal substrate to achieve highly uniform control of the seed crystal, and then strictly controls a length-to-diameter ratio and distribution of a semiconductor structure by continuous growth. Therefore, a new nano optics platform is provided for studying various novel effects produced by interaction between light and substances. | 2020-12-24 |
20200400888 | SYSTEMS AND METHODS FOR EFFICIENT COUPLING BETWEEN INTEGRATED PHOTONIC WAVEGUIDES AND ELECTRO-OPTIC RESONATOR - An optical coupling device is described herein. The optical coupling device comprises a first waveguide and a second waveguide that are formed on a common substrate, and a resonator that is positioned out of plane with the two waveguides. The resonator and waveguides are positioned such that light traveling in each of the waveguides evanescently couples to the resonator but not to the other of the waveguides. The optical coupling device can be used in connection with improving linewidth of a laser source for a lidar sensor. In another example, the optical coupling device can be used in connection with wavelength division multiplexing. | 2020-12-24 |
20200400889 | SUBMARINE OPTICAL SYSTEM - A common component assembly is provided for a cable joint for joining a first submarine optical cable and a second submarine optical cable. The assembly includes a first end face including a first opening and a first flange for connection to a first cable termination unit of an undersea optical cable joint. The assembly also includes a second end face including a second opening and a second flange for connection to a second cable termination unit of an undersea optical cable joint. The assembly further includes a fiber tray connecting the first end face to the second end face. In addition, the assembly includes an optical assembly connected to a first side of the fiber tray. The optical assembly includes a free space optical add/drop multiplexer. | 2020-12-24 |
20200400890 | FIBER ARRAY UNIT WITH UNFINISHED ENDFACE - A method of manufacturing an optical apparatus comprises forming an unfinished endface of a fiber array unit (FAU) that provides an arrangement of one or more optical fibers. The one or more optical fibers terminate at the unfinished endface. The method further comprises optically aligning the FAU with an external light-carrying medium. The one or more optical fibers are optically coupled with the external light-carrying medium through the unfinished endface. | 2020-12-24 |
20200400891 | MULTISTAGE SPOT SIZE CONVERTER IN SILICON PHOTONICS - A device is provided for optical mode spot size conversion to optically couple a semiconductor waveguide with an optical fiber. The device includes a waveguide comprising a waveguide taper region, which comprises a shoulder portion and a ridge portion above the shoulder portion. The ridge portion has a width that tapers to meet a width of the shoulder portion. The waveguide taper region comprises a first material. The device also has a mode converter coupled to the waveguide. The mode converter includes a plurality of stages, and each of the plurality of stages tapers in a direction similar to a direction of taper of the waveguide taper region. The mode converter is made of a second material different from the first material. | 2020-12-24 |
20200400892 | OPTICAL SWITCH DEVICES - An optical device includes an array of lenses and a plurality of segments disposed under the array of lenses. The plurality of segments corresponds to a plurality of images. Upon tilting the device at different viewing angle, the array of lenses presents images sequentially. In some examples, individual ones of the segments can comprise specular reflecting, transparent, diffusely reflecting, and/or diffusely transmissive features. In some examples, individual ones of the segments can comprise transparent and non-transparent regions. Some examples can incorporate more than one region producing an optical effect. | 2020-12-24 |
20200400893 | PULL-BACK FIBER OPTIC CABLE INSTALLATION FOR MULTI DWELLING UNITS - A pull-back fiber cable installation for multi dwelling units includes a first distribution point disposed between a first group of twelve units and a second group of twelve units, a second distribution point disposed between a third group of twelve units and a fourth group of twelve units, and a twelve fiber distribution cable optically connected to the first and second distribution points. Each fiber of the distribution cable is cut between the first and second distribution point. A first portion of the cut fiber is spliced to a first drop cable that runs to a first unit of the second group of twelve units, and a second portion of the cut fiber is spliced to a second drop cable that runs to a first unit of the third group of twelve units. | 2020-12-24 |
20200400894 | INDOOR HYBRID CONNECTIVITY SYSTEM FOR PROVIDING BOTH ELECTRICAL POWER AND FIBER OPTIC SERVICE - A hybrid optical and electrical connection system includes a fiber optic connector; and a connector contact holder. The connector includes a connector body defining a forward plug end, a ferrule, a spring that biases the ferrule in a forward direction, and a rear piece that retains the spring within the connector body. The connector contact holder includes an attachment portion that attaches to the fiber optic connector, a lateral offset portion that extends laterally outwardly from the fiber optic connector and a forward extension structure that projects forwardly from the lateral offset portion toward the forward plug end of the connector body. The forward extension structure includes connector contact mounts. Connector electrical contacts are held by the connector contact mounts. | 2020-12-24 |
20200400895 | SEALING ENCLOSURE FOR A CONNECTOR ON A CABLE SUCH AS A STANDARDIZED FIBER-OPTIC CONNECTOR - A sealing enclosure is configured to connect to a mating enclosure. The sealing enclosure loosely receives a connector within a connector volume so that the connector, which may be of a standard type used in electronic or optic data transmission, may be displaced within a plug face at the forward end of the connector volume. The connector may compensate variations in the position of a mating connector with respect to the mating enclosure. The sealing enclosure allows to seal off the connector volume and engage the sealing enclosure with a mating enclosure in a single motion. This is affected by having a cable seal interposed between an inner body and an outer body. If the outer body is moved forward to engage the mating connector, the cable seal is squeezed between the cable and the inner body sealing off the connector volume at the rearward end of the inner body. | 2020-12-24 |
20200400896 | Fiber Optic Guide Pin Changer and Field Tool with Adapter - A pin exchanger has protrusions from gripping elements that engage fiber optic guide pins. Guide beams on the pin exchanger provide a reference for aligning the guide pins and the pin exchanger with a fiber optic connector and a fiber optic ferrule. An adapter is also provided that has openings to receive the guide beams. The adapter is preferably installed in a field tool and together they engage the fiber optic connector, align the pin exchanger and move the guide pin holder to allow guide pins to be inserted or removed. | 2020-12-24 |
20200400897 | FIBER OPTIC CONNECTOR ASSEMBLY WITH CRIMP TUBE SUBASSEMBLY AND METHOD OF USE - A fiber optical connector assembly with a crimp tube assembly improves tensile load on the optical fiber cable or microduct jacket when the connector assembly is used as part of an optical network that is secured between towers spaced apart 1,000 meters or more. The crimp tube assembly has one or more crimp zones, and the crimp tube assembly has a lip formed on an inner surface of the crimp right assembly to improve tensile strength when the crimp tube assembly is secured to a back post of a first fiber optic connector assembly that is air blown or push through a duct or conduit. An epoxy resin may be injected into a cavity between the cable jacket and the crimp tube assembly to improve tensile load strength. | 2020-12-24 |