16th week of 2020 patent applcation highlights part 38 |
Patent application number | Title | Published |
20200116828 | SENSOR SHIELD - An assembly includes a housing arranged to house a sensor. The assembly includes a ring-shaped first shield supported by the housing. The assembly includes a second shield supported by the housing above the first shield and defining an outer perimeter greater than an inner perimeter, and less than an outer perimeter, of the first shield. | 2020-04-16 |
20200116829 | Measuring Arrangement Having an Optical Transmitter and an Optical Receiver - A measuring arrangement having an optical transmitter and an optical receiver are disclosed. In an embodiment a measuring arrangement includes an optical transmitter configured to transmit electromagnetic measuring radiation into a transmission space, an optical receiver configured to receive measuring radiation reflected by an object in a reception space and a covering configured to reduce reception of an interference radiation by the receiver, wherein the interference radiation is measuring radiation not reflected by the object. | 2020-04-16 |
20200116830 | CHANNEL-SPECIFIC MICRO-OPTICS FOR OPTICAL ARRAYS - A multispectral sensor array can include a combination of ranging sensor channels (e.g., LIDAR sensor channels) and ambient-light sensor channels tuned to detect ambient light having a channel-specific property (e.g., color). The sensor channels can be arranged and spaced to provide multispectral images of a field of view in which the multispectral images from different sensors are inherently aligned with each other to define an array of multispectral image pixels. Various optical elements can be provided to facilitate imaging operations. Light ranging/imaging systems incorporating multispectral sensor arrays can operate in rotating and/or static modes. | 2020-04-16 |
20200116831 | LIDAR DEVICE INCLUDING A DYNAMIC FILTER, AND METHOD - A LIDAR device for scanning a scanning angle, including at least one radiation source for generating at least one electromagnetic beam, including a rotatable mirror for deflecting the at least one electromagnetic beam along the scanning angle, including a receiving unit for receiving at least one incoming electromagnetic beam and for deflecting the at least one incoming electromagnetic beam to at least one detector, and including at least one filter, the at least one filter being adaptable to the at least one incoming electromagnetic beam. Moreover, a method for scanning a scanning angle with the aid of such a LIDAR device is described. | 2020-04-16 |
20200116832 | MULTIPLE BEAM, SINGLE MEMS LIDAR - Various technologies described herein pertain to multiple beam, single mirror lidar. A multiple beam, single mirror lidar system can include a 2D MEMS mirror and a photonic integrated circuit. The photonic integrated circuit includes a plurality of lidar channels, each including a transmitter and a receiver. In the photonic integrated circuit, the lidar channels are directed at a common point on the 2D MEMS mirror. The lidar channels are oriented with relative offset angles. Thus, the lidar channels output beams that are directed at the common point on the 2D MEMS mirror and are oriented with relative offset angles. | 2020-04-16 |
20200116833 | MULTIPLE-PULSES-IN-AIR LASER SCANNING SYSTEM WITH AMBIGUITY RESOLUTION BASED ON RANGE PROBING AND 3D POINT ANALYSIS - A multiple-pulses-in-air (MPiA) laser scanning system, wherein the MPiA problem is addressed in that an MPiA assignment of return pulses to send pulses of a laser scanner is based on range tracking and range probing at intermittent points in time. Each range probing comprises a time-of-flight arrangement which is constructed to be free of the MPiA problem. The invention further relates to an MPiA laser scanning system, wherein an MPiA ambiguity within a time series of return pulses, is converted into 3D point cloud space, which provides additional information from the spatial neighborhood of the points in question to enable MPiA disambiguation. | 2020-04-16 |
20200116834 | PIXELS FOR TIME OF FLIGHT (TOF) IMAGING - A pixel includes a constant current source electrically connected to a first node. An integrating capacitor is electrically connected between the first node and a ground. A sampling transistor is electrically connected between the first node and a second node. A photodiode is electrically connected between a base terminal of the sampling transistor and the ground for switching electrical connectivity through the sampling transistor in response to radiation incident on the photodiode. | 2020-04-16 |
20200116835 | TIME-RESOLVING SENSOR USING SPAD + PPD OR CAPACITORS IN PIXEL FOR RANGE MEASUREMENT - A time-resolving sensor includes a single-photon avalanche diode (SPAD), a logic circuit and differential time-to-charge converter (DTCC) circuit. The SPAD is responsive to a shutter signal to generate an output signal based on detecting an incident photon. The logic circuit generates first and second enable signals. The DTCC includes a capacitor device, first and second switching devices, and an output circuit. The first switching device is responsive to the first enable signal to transfer a charge on the capacitor device to the first floating diffusion. The second switching device is responsive to the second enable signal to transfer a remaining charge on the capacitor device to the second floating diffusion. The output circuit outputs a first voltage that is based on the first charge on the first floating diffusion and a second voltage that is based on the second charge on the second floating diffusion. | 2020-04-16 |
20200116836 | SUBPIXEL APERTURES FOR CHANNELS IN A SCANNING SENSOR ARRAY - A multispectral sensor array can include a combination of ranging sensor channels (e.g., LIDAR sensor channels) and ambient-light sensor channels tuned to detect ambient light having a channel-specific property (e.g., color). The sensor channels can be arranged and spaced to provide multispectral images of a field of view in which the multispectral images from different sensors are inherently aligned with each other to define an array of multispectral image pixels. Various optical elements can be provided to facilitate imaging operations. Light ranging/imaging systems incorporating multispectral sensor arrays can operate in rotating and/or static modes. | 2020-04-16 |
20200116837 | LIDAR SYSTEM GENERATING MULTIPLE LIDAR OUTPUT SIGNALS - A LIDAR system includes a light source configured to generate an outgoing light signal that includes multiple channels that are each of a different wavelength. The system includes optical components that generate composite light signals. Each composite light signal includes light from a LIDAR input signal combined with light from a reference signal. The LIDAR input signals each includes light that was reflected by an object located apart from the system and that was included also in one of the channels. The reference signals do not include light that was reflected by the object but include light from one of the channels. Each of the composite signals is generated such that the reference signal and the LIDAR input included in the composite signal includes light from the same channel. | 2020-04-16 |
20200116838 | Photon Sensor Apparatus - A sensor apparatus for photon sensing comprises a plurality of pixel devices, each pixel device comprising: a plurality of photon detectors arranged to produce photon detection signals in response to photon detection events; a processing resource configured to process photon detection signals to produce photon detection event signals, wherein each photon detection event signal comprises time data representative of a photon detection time at which a respective photon detection event occurred; a pixel memory; a further processing resource configured to process the photon detection event signals to obtain detection data representative of photon detection events over a detection period; a communication resource for transmitting the detection data from the pixel device, wherein the processing of the photon detection event signals is such that storing and/or transmission of the detection data uses less storage capacity and/or communication capacity than would be used by storage and/or transmission of the photon detection event signals directly. | 2020-04-16 |
20200116839 | SOLID-STATE OPTICAL RECEIVER DRIVER SYSTEM AND METHOD FOR TESTING A SOLID-STATE OPTICAL RECEIVER DRIVER SYSTEM - Embodiments of the invention relates to a Solid-state optical receiver driver system, particularly for automotive applications, comprising at least one optical receiver channel, the optical receiver channel being connectable to a respective optical receiver, which is characterized in that the solid-state optical receiver driver system further comprises at least one test signal generation unit, for providing a test signal to the at least one optical receiver channel. The invention further relates to a method for testing a solid-state optical receiver driver system. | 2020-04-16 |
20200116840 | LIGHT DETECTION AND RANGING SYSTEM AND METHOD FOR OPERATING AND TESTING A LIGHT DETECTION AND RANGING SYSTEM, PARTICULARLY FOR SAFETY RELEVANT APPLICATIONS - A light detection and ranging system includes at least one first light source for sending a light signal; at least one photo detector for receiving a light signal from the surroundings of the system; at least one signal processing unit for receiving and processing the signal of the at least one detector for detecting objects in the surroundings of the system; at least one control unit for controlling, particularly synchronizing, the at least one light source, the at least one photo detector and/or the at least one signal processing unit; wherein the system further comprises a test unit for testing the at least one photo detector and the at least one signal processing unit, wherein the test unit comprises a second light source for sending a test light signal within the system to the at least one photo detector. | 2020-04-16 |
20200116841 | DISTANCE SENSOR, AND CALIBRATION METHOD PERFORMED BY DEVICE AND SYSTEM INCLUDING THE DISTANCE SENSOR - A calibration method performed by a distance sensor emitting at least one beam is provided. The calibration method includes obtaining information regarding one surface of an object; obtaining distance sensor data by emitting a plurality of beams to the one surface of the object; and performing calibration on the plurality of beams emitted by the distance sensor, based on the information about the one surface of the object and the distance sensor data. | 2020-04-16 |
20200116842 | OPTICAL SWITCHING IN LIDAR SYSTEMS - A LIDAR system is configured to generate an outgoing light signal that exits from the LIDAR system. The LIDAR system is configured to receive an incoming light signal that enters the LIDAR system and that includes light from the outgoing light signal. The LIDAR system also includes an optical switch that receives the outgoing light signal and the incoming light signal and is configured to be operated in different modes. The incoming light signal and/or the outgoing light signal are routed along different optical paths through the LIDAR system in response to the optical switch being in different modes. | 2020-04-16 |
20200116843 | INTEGRATED SONAR DEVICES AND METHODS - The invention generally relates to sonar devices that integrate forward-looking sensors with down-looking echosounders, side scanning sonar, or both. The invention provides a sonar system that includes a forward-looking sonar device that operates in an integrated fashion with one or more other sonar devices so that a boater can have a reliable navigation tool while also using sonar for finding fish and other features on the seafloor. The forward-looking sonar can include a transducer array that takes a three-dimensional acoustic reading of the objects and seafloor ahead. The electronics that process the acoustic data can also process data from down-looking sonar, side-scanning sonar, or both and can integrate the information to present an expansive display in the boat, revealing the contents and the floor of the sea in front of, around, and under the boat. | 2020-04-16 |
20200116844 | ADAPTIVE WEIGHTING FOR ADAPTIVE ULTRASOUND IMAGING - Systems and methods are disclosed for performing ultrasound imaging. Channel domain data can be received from an ultrasound transducer to form one or more channel domain data sets. A first ultrasound processing operation can be applied to the channel domain data to generate a first subset of one or more images from the one or more channel domain data sets. A second ultrasound processing operation can be applied to the channel domain data to generate a second subset of one or more images from the one or more channel domain data sets. Image characteristics of the first subset of one or more images and the second subset of one or more images can be regionally analyzed to identify regional image characteristics of the first and second subsets of one or more images. The first subset of one or more images can be blended with the second subset of one or more images based on the regional image characteristics to generate one or more composite images. | 2020-04-16 |
20200116845 | OBJECT DETECTION APPARATUS, OBJECT DETECTION METHOD, AND COMPUTER READABLE MEDIUM - A reception unit receives, with an ultrasonic sensor, received signals including a reflected wave obtained when an acoustic signal emitted from a mobile body is reflected by an object. A disturbance judgment unit judges whether a jamming attack in which a jamming signal is transmitted from outside is being made, on the basis of the received signals. An object detection unit detects an object in surroundings of the mobile body on the basis of the received signals if it is judged that no attack is being made and does not perform object detection if it is judged that an attack is being made. | 2020-04-16 |
20200116846 | DISTINGUISHING HOLOGRAPHIC OBJECTS FROM PHYSICAL OBJECTS - Distinguishing between holographic and physical objects in an environment. Determining whether an object is holographic or physical begins with monitoring locating objects within an environment. When locating an object within the environment, an object can be identified as physical by detecting a shadow cast by the object, detecting a reflection of the electromagnetic (EM) wave directed at the object, and by detecting a reflection of a sound wave directed at the object. Otherwise, when locating an object within the environment, an object is identified as holographic as a result of the object not casting a shadow, not receiving a reflection of the EM wave from the object, and not receiving a reflection of the sound wave from the object. In one or more embodiments, actions upon a particular object can be determined based on whether the object is physical or holographic. | 2020-04-16 |
20200116847 | VEHICLE PASSENGER DETECTION DEVICE, SYSTEM INCLUDING THE SAME, AND METHOD THEREOF - A vehicle passenger detection device, a system including the same, and a method thereof are provided. The vehicle passenger detection device includes a processor configured to determine a location of a passenger per at least one or more seats based on strength of radar signals reflected from the at least one or more seats including medium with different reflection characteristics and a storage storing information associated with strength of a radar signal for each distance and information associated with strength of a radar signal according to the reflection characteristics of the medium. | 2020-04-16 |
20200116848 | LAYERED TACTICAL INFORMATION SYSTEM AND METHOD - A layered tactical information system and a method of sharing tactical information between multiple layers are provided. The method performed by a processor of each layer of the multiple layers includes searching for relevant data available to the processor of the layer in response to at least one of a layer request from the processor of another layer of the multiple layers and a directive received by a processor of a first layer of the multiple layers. The directive specifies an end state, one or more target types, a time window, a geographic location area, and a first layer requirement of at least one layer requirement to be resolved by the processor of the first layer. The method performed by the processor further includes evaluating whether a layer requirement of the at least one layer requirement for the layer is satisfied based on at least one of (a) any found relevant data that was found by the search and (b) layer data obtained from at least one of the other layers. When the layer requirement for the layer is not satisfied, the method performed by the processor further includes performing at least one of (a) transmitting, by the processor of the layer to the processor of another layer of the multiple layers, a layer request to gather further information and (b) generating layer data and providing the layer data generated to the processor of at least one other layer. | 2020-04-16 |
20200116849 | METHOD, DEVICE, AND SYSTEM FOR INTERFERENCE REDUCTION IN A FREQUENCY-MODULATED CONTINUOUS-WAVE RADAR UNIT - A method for interference reduction in a stationary radar unit of a frequency-modulated continuous-wave (FMCW) type is provided. A sequence of beat signals is received, and a reference beat signal is calculated as an average or a median of one or more of the beat signals in the sequence. By comparing a difference between a beat signal and the reference beat signal, or a derivative of the difference, to one or more thresholds, a segment which is subject to interference is identified. The segment of the beat signal is replaced by one or more of a corresponding segment of an adjacent beat signal in the sequence, and a corresponding segment of the reference beat signal. | 2020-04-16 |
20200116850 | Estimating Angle of Human Target Using mmWave Radar - A method of estimating an angle of arrival of a radar signal reflected on a human target includes: receiving the reflected radar signal with first and second antennas of a millimeter-wave radar; transforming the reflected radar signal received to generate first and second range spectrum, respectively; generating a first and second range-Doppler maps based on the first and second range spectrum, respectively; determining or estimating a Doppler velocity based on the first range-Doppler map or the second range-Doppler map; compensating the first and second range-Doppler maps by selecting a peak in the first or second range-Doppler maps based on the determined Doppler velocity; identifying an index of the first macro-compensated range-Doppler map corresponding to an identified target; estimating a phase difference based on the first and second macro-compensated range-Doppler maps and the identified index; and estimating the angle of arrival based on the phase difference. | 2020-04-16 |
20200116851 | Robust Constant False Alarm Rate (CFAR) Detector for Interference-Plus-Noise Covariance Matrix Mismatch - Detection of a radar target from a received radar signal includes computing a vector of filter weights dependent upon a steering vector and determining a threshold value dependent upon a designated probability of false alarm. The vector of filter weights is applied to samples of the received radar signal at a test cell, corresponding to a test range, to provide a filtered test signal and a test power of the filtered test signal is computed. The weights are also applied to samples of the received radar signal at a number of reference cells, to produce filtered reference signals. A reference power is computed from the filtered reference signals and the radar target is detected at the test range when a ratio of the test power to the reference power exceeds the threshold value. | 2020-04-16 |
20200116852 | SINGLE SPACE OPTICAL PLATFORM FOR DETERMINING THE RANGE AND/OR VELOCITY OF SPACE OBJECTS - A single space platform with an optical telescope, a spectrometer, and/or a database of stored spectral information may be used to determine the range and/or velocity of natural or artificial resident space objects (RSOs). Relativistic Doppler shift measured from reflected solar photons and/or photons from other emitting source(s) provides information that the space platform can use to determine the relative velocity and the range rate. This information can then be used in combination with the right ascension and declination angles to perform differential correction and obtain an updated orbit. | 2020-04-16 |
20200116853 | RESOLVING RADAR ANGLE AMBIGUITIES USING A MULTIPLE HYPOTHESIS TRACKER - Radar system that utilizes Multiple Hypothesis Tracker (MHT) to resolve angle ambiguities, from a series of dwells with ambiguous detections over time. The system receives first and second observation, forms radar tracks and ambiguous angle detections using unfolding data at each of the ambiguous angle detections, scores the radar tracks to determine a best hypothesis of tracks, where a hypothesis for the MHT is formed by collecting compatible tracks into the hypothesis and computing probabilities of the hypothesis by using the score of each radar track in said hypothesis, and compares the scores of all the radar tracks originating from the first observation data to determine whether one of the scores of the radar tracks exceeds the scores of all other radar tracks originating from the same first observation data by a predetermined range. | 2020-04-16 |
20200116854 | APPARATUS AND METHOD FOR COMPLEMENTING AUTOMOTIVE RADAR - The present disclosure provides an apparatus for complementing automotive radar, which comprises a camera for obtaining an image of a field of view, a radar sensor for transmitting a radar signal and detecting a radar signal reflected by an object, and a controller for obtaining first information on a target from the image, setting a monitoring range of the radar sensor according to the obtained first information, obtaining second information on the target based on a radar signal detected in the monitoring range, and detecting malfunction of the radar by determining whether or not the first information matches the second information, and further provides a method thereof. According to the present disclosure, it is possible to quickly detect malfunction of the radar sensor. | 2020-04-16 |
20200116855 | RADAR APPARATUS FOR VEHICLE AND METHOD FOR CONTROLLING THE SAME - The present disclosure provides a radar apparatus for a vehicle, which includes a plurality of radar sensors, each having a predetermined field of sensing, and a controller configured to generate information on the object based on a radar signal reflected by the object entering the fields of sensing of the plurality of radar sensors, wherein the controller is configured to, when the object is duplicately detected by two or more of the plurality of radar sensors, integrate two or more pieces of information on the objects detected by the two or more radar sensors, respectively, into one, and is configured to, when the object moves from a field of sensing of a first radar sensor to a field of sensing of a second radar sensor, among the plurality of radar sensors, perform control so as to hand over the information on the object between the first radar sensor and the second radar sensor, and further provides a control method thereof. According to the present disclosure, it is possible to efficiently process information on an object detected by a radar sensor and to continuously detect an object moving through fields of sensing of radar sensors. | 2020-04-16 |
20200116856 | COLLISION WARNING USING ULTRA WIDE BAND RADAR - A method of collision warning using broad antenna pattern ultra-wide band (UWB) radar includes emitting a first radar ping from a broad beam UWB antenna and receiving a first return signal identifying an object. A first hemisphere with a first radius is determined for the object. A second ping, second return and second hemisphere is defined for the object. At the intersection of the hemispheres, an object ring is defined. The radius of the object ring is compared with the radius of a collision cylinder (e.g., representing a safe distance around a system or device, such as a drone). The object may be identified as posing a collision threat when the radius of the object ring is smaller than the radius of the collision cylinder. | 2020-04-16 |
20200116857 | SYSTEM AND METHOD FOR DETECTING PRECIPITATION USING RADAR - A system and method for sensing precipitation conditions near a vehicle. The precipitation radar system is mounted on the vehicle and includes a transmitter, a receiver, and an electronic control unit. The method transmits radar signals from the transmitter; receives reflected radar signals at the receiver; determines response information from the reflected radar signals for a region of interest; and uses the response information to determine precipitation conditions for the region of interest. The region of interest is defined, at least in part, by a range and the response information includes phase data, amplitude data, or both phase and amplitude data based on the reflected radar signals. The method and system may then use the precipitation conditions to control other responsive vehicle actions, such as activating a windshield heater, a windshield defroster, a windshield wiper or a combination thereof. | 2020-04-16 |
20200116858 | UNDERWATER DETECTION APPARATUS AND UNDERWATER DETECTION METHOD - An underwater detection apparatus is provided. The apparatus may include a transmission transducer, a reception transducer, and processing circuitry. The transmission transducer may transmit a transmission wave. The reception transducer may include a plurality of reception elements that generate a reception signal based on a reflection wave including a reflection of the transmission wave on an underwater target. The processing circuitry may generate a 3D image data that represents an echo intensity of the underwater target based at least in part on the reception signal generated by each reception element, and may set a depth marking on the 3D image data for which a depth is equal to a given depth, by changing an echo intensity color that represents the echo intensity of the 3D image data into a depth color that represents a depth of the 3D image data, the depth color being different from the echo intensity color. | 2020-04-16 |
20200116859 | SONAR TRANSDUCER ASSEMBLY HAVING A PRINTED CIRCUIT BOARD WITH FLEXIBLE ELEMENT TABS - An example sonar transducer assembly is provided including at least one transducer element and a flexible printed circuit board (PCB) including at least one set of electrical connections for the at least one transducer element. The electrical connections include flex tabs configured to flex out of a PCB plane. The sonar transducer assembly also includes a support structure including an aperture for the at least one transducer element. The support structure is configured to support the body of the PCB, allow flexion of the flex tabs into the aperture, and retain the at least one transducer element in the at least one aperture. The transducer element is installed in a direction that is perpendicular to the PCB plane causing the flex tabs to flex outwardly from the PCB plane, thereby creating an elastic force of the flex tabs applied against opposing ends of the at least one transducer element. | 2020-04-16 |
20200116860 | PROXIMITY SENSING DEVICE - A proximity sensing device which is disposed under the OLED panel and has an emitting module and a receiving module, is provided. The emitting module can emit an invisible light which has a peak wavelength not less than 1000 nm. The receiving module is disposed adjacent to the emitting module and can receive a reflecting light from the reflected invisible light. Therefore, the invisible light passing through the OLED panel will not cause a bright spot on the panel. | 2020-04-16 |
20200116861 | ELECTRONIC DEVICE AND METHOD FOR DETECTING OBSTACLE - A method for detecting an obstacle applicable in an electronic device includes detecting whether at least one object is within a line of sight of an image capturing device. The image capturing device is controlled to capture a first image of the object and the image capturing device is caused to move until a capturing angle for capturing another image of the object is changed. The image capturing device is controlled to capture a second image of the object and a determination is made as to whether the object in the first image is the same as the object in the second image. For such recognized objects, the object is determined to be a non-planar obstacle when the object in the first image is not the same as the object in the second image. | 2020-04-16 |
20200116862 | TIME-OF-FLIGHT RGB-IR IMAGE SENSOR - A three-dimensional time-of-flight (TOF) RGB-IR image sensor is provided, including a signal generator configured to generate a modulated electrical signal. The three-dimensional TOF RGB-IR image sensor may further include a light-emitting diode (LED) configured to receive the modulated electrical signal and emit modulated light. The three-dimensional TOF RGB-IR image sensor may further include a TOF sensor integrated circuit configured to receive light at the light-receiving surface and generate a photoelectrical signal based on the received light. The received light may include ambient light and reflected modulated light. The three-dimensional TOF RGB-IR image sensor may further include a filter array located on the light-receiving surface of the TOF sensor integrated circuit. The filter array may include a plurality of pixels, each pixel including an infrared-transmitting bandpass filter and one or more visible-light-transmitting bandpass filters located adjacent to the infrared-transmitting bandpass filter. | 2020-04-16 |
20200116863 | Optical Systems, Devices, And Methods Including High Performance Optical Receivers - Optical systems, devices, and methods are provided for determining various characteristics, such as quantity, movement, distance and speed/velocity of an object relative to the system. The system and method includes an optical transmitter to transmit an output optical signal carrying an electrical reference signal and an optical receiver to receive a reflection of the output optical signal. The receiver includes at least one local oscillator providing local oscillator light at a local oscillator frequency, at least one combiner to combine the reflection of the output optical signal with the local oscillator light into a coupled optical signal. An optical-electrical converter converts the coupled optical signal into a first electrical signal, which is rectified via an envelope detector/rectifier to provide a first rectified electrical signal, which is processed by a signal processor along with the reference signal to calculate various characteristics of an object that reflected the output optical signal, such as the quantity, movement, distance, velocity, etc. | 2020-04-16 |
20200116864 | LIDAR SYSTEM AND METHOD FOR OPERATING A LIDAR SYSTEM - A LIDAR system, including a transmitting unit that includes a polarization device, the polarization device being configured to set a polarization of a scanning beam, a receiving unit that is configured to receive the scanning beam after it has been reflected on a point in the surroundings of the LIDAR system, the receiving unit including a polarization recognition device that is configured to recognize a polarization of the reflected scanning beam, and an evaluation unit that is configured to ascertain a polarization difference, based on a difference between the polarization that is set by the transmitting unit and the polarization that is recognized by the receiving unit. | 2020-04-16 |
20200116865 | ENCODING LIDAR SCANNED DATA FOR GENERATING HIGH DEFINITION MAPS FOR AUTONOMOUS VEHICLES - Embodiments relate to methods for efficiently encoding sensor data captured by an autonomous vehicle and building a high definition map using the encoded sensor data. The sensor data can be LiDAR data which is expressed as multiple image representations. Image representations that include important LiDAR data undergo a lossless compression while image representations that include LiDAR data that is more error-tolerant undergo a lossy compression. Therefore, the compressed sensor data can be transmitted to an online system for building a high definition map. When building a high definition map, entities, such as road signs and road lines, are constructed such that when encoded and compressed, the high definition map consumes less storage space. The positions of entities are expressed in relation to a reference centerline in the high definition map. Therefore, each position of an entity can be expressed in fewer numerical digits in comparison to conventional methods. | 2020-04-16 |
20200116866 | AUTOMATIC LIDAR CALIBRATION BASED ON CROSS VALIDATION FOR AUTONOMOUS DRIVING - In one embodiment, a set of LIDAR images representing LIDAR point cloud data captured by a LIDAR device of an ADV at different points in time is received. For each of the LIDAR images, a perception method is utilized to determine a location of an obstacle captured in the LIDAR image in a local coordinate system. The LIDAR image is transformed using a coordinate converter (e.g., a LIDAR to GPS coordinate conversion logic or function) from the local coordinate system to a global coordinate system. The coordinate converter is optimized based on the transformed LIDAR images by adjusting one or more parameters of the coordinate converter and the above operations are iteratively performed to obtain a set of optimal parameters. The optimized coordinate converter can then be utilized to process subsequent LIDAR images during autonomous driving at real-time. | 2020-04-16 |
20200116867 | AUTOMATIC LIDAR CALIBRATION BASED ON PRE-COLLECTED STATIC REFLECTION MAP FOR AUTONOMOUS DRIVING - In one embodiment, a set of LIDAR images are received representing the LIDAR point cloud data captured by a LIDAR device of an autonomous driving vehicle (ADV) at different point in times. Each of the LIDAR imagers is transformed or translated from a local coordinate system (e.g., LIDAR coordinate space) to a global coordinate system (e.g., GPS coordinate space) using a coordinate converter configured with a set of parameters. A first LIDAR reflection map is generated based on the transformed LIDAR images, for example, by merging the transformed LIDAR images together. The coordinate converter is optimized by adjusting one or more parameters of the coordinate converter based on the difference between the first LIDAR reflection map and a second LIDAR reflection map that serves as a reference LIDAR reflection map. The optimized coordinate converter can then be utilized to process LIDAR data for autonomous driving at real-time. | 2020-04-16 |
20200116868 | SATELLITE SIGNAL PROCESSING APPARATUS AND UNMANNED AERIAL VEHICLE - A satellite signal processing apparatus includes a digital frontend circuit configured to process a radio frequency signal received from an antenna to obtain a baseband signal, a buffer configured to buffer the baseband signal obtained from the digital frontend circuit, a pseudo-code broadcast circuit storing pseudo-codes of a plurality of satellites, and a baseband signal processing channel coupled to the pseudo-code broadcast circuit and configured to perform a work task based on a pseudo-code broadcasted by the pseudo-code broadcast circuit and the baseband signal obtained from the buffer. | 2020-04-16 |
20200116869 | OPTIMAL PERFORMANCE OF GLOBAL NAVIGATION SATELLITE SYSTEM IN NETWORK AIDED EMERGENCY SCENARIOS - A method, electronic device, and system are herein disclosed. The method includes loading a plurality of available satellite signal carriers, generating a hypothesis for each of the plurality of available satellite signal carriers, combining the plurality of available satellite signal carriers into a number of signal combinations based on the created hypotheses, and determining whether a satellite signal is detected with one of the number of signal combinations. | 2020-04-16 |
20200116870 | CORRECTIONS RADIO ANTENNA MOUNT ON THE RANDOME OF A GNSS RECEIVER - Systems and methods for receiving GNSS and corrections signals by a GNSS rover. The GNSS rover may include a radome enclosing a GNSS antenna and a GNSS front end. The GNSS rover may also include a corrections antenna attached to a connection housing and configured to receive corrections signals from a base station. The connection housing may be configured to removably attach to the radome. The GNSS rover may further include a corrections front end enclosed within the radome and electrically coupled to the corrections antenna via capacitive coupling when the connection housing is removably attached to the radome. The GNSS rover may further include a first capacitor plate enclosed within the radome and positioned substantially parallel to an outer wall of the radome and a second capacitor plate enclosed within the connection housing and positioned substantially parallel to an outer wall of the connection housing. | 2020-04-16 |
20200116871 | METHOD AND DEVICE FOR DETERMINING A POSITIONING ACCURACY GRADE, AND ELECTRONIC DEVICE HAVING THE SAME - A method, a device, and an electronic device for determining a positioning accuracy grade are provided. In the method, a predetermined list is created. The predetermined list is a list of at least one application with a positioning accuracy reaching up to a predetermined threshold. Operation preference information of a user operating is obtained a current third-party application selected from a plurality of third-party applications, which applies a positioning system in an electronic device. A positioning accuracy grade of the positioning system is determined correspondingly based on the operation preference information. | 2020-04-16 |
20200116872 | TIGHTLY COMBINED GPS/BDS CARRIER DIFFERENTIAL POSITIONING METHOD - A tightly combined GPS/BDS carrier differential positioning method is provided. The method comprises: using a GPS as a reference system to construct a GPS intra-system double-difference ionosphere-free combination model and a GPS/BDS inter-system double-difference ionosphere-free combination model; selecting a BDS reference satellite to re-parameterize an ambiguity of a GPS/BDS inter-system double-difference ionosphere-free combination and perform parameter decorrelation, estimating an ionosphere-free combination carrier differential inter-system bias in real time, and performing reference conversion on the ionosphere-free carrier inter-system bias to realize a continuous estimability of the ionosphere-free carrier differential inter-system bias in necessary; and finally, using ambiguity-fixed base carrier observations to form the ionosphere-free combination and performing tightly combined positioning on the inter-system double-difference ionosphere-free combination based on the estimated ionosphere-free carrier difference inter-system bias. | 2020-04-16 |
20200116873 | POSITIONING METHOD AND POSITIONING TERMINAL - In a case where a magnitude of a speed difference vector is smaller than a threshold in a state where a fixed solution is obtained continuously for a first time, a processor outputs a current RTK positioning solution as current coordinates of a moving object. On the other hand, when the magnitude of the speed difference vector is equal to or greater than the threshold in a state where the fixed solution is obtained continuously for the first time, the processor outputs a DR solution as the current coordinates of the moving object. | 2020-04-16 |
20200116874 | X-RAY PULSING DURING SENSOR OPERATION FOR HIGH FLUX PHOTON COUNTING COMPUTED TOMOGRAPHY (CT) IMAGING SYSTEM APPLICATIONS - Various embodiments include an imaging system and methods of operating the system to reduce effects from space charge formation in radiation detectors. The imaging system includes a radiation detector configured to detect photon energy from ionizing radiation, a source of ionizing radiation configured to emit a beam of radiation toward the radiation detector, and a chopper disposed between the radiation detector and the source of ionizing radiation, wherein the chopper is configured to periodically block the beam of radiation from reaching the radiation detector. The chopper may be configured to limit delivery of photon energy to the radiation detector to durations shorter than an onset time of dynamic polarization and E-field relaxation. In some embodiments, the chopper is a rotating chopper rotated by a drive motor. In some embodiments, the chopper is a shutter. | 2020-04-16 |
20200116875 | RADIATION COUNTING DEVICE AND METHOD OF CONTROLLING RADIATION COUNTING DEVICE - A radiation counting device is provided that includes a scintillator, a pixel circuit, and an analog-to-digital conversion circuit. In the radiation counting device, the scintillator generates a photon when radiation is incident. In the radiation counting device, the pixel circuit converts the photon into charge, stores the charge over a predetermined period, and generates an analog voltage in accordance with the amount of stored charge. In the radiation counting device, the analog-to-digital conversion circuit converts the analog voltage into a digital signal in a predetermined quantization unit less than the analog voltage generated from the one photon. | 2020-04-16 |
20200116876 | DETECTOR FOR X-RAY FLUORESCENCE - Disclosed herein is a system configured to cause an element in a sample to emit fluorescent X-ray, the system comprising a detector with a plurality of pixels, each pixel configured to count numbers of X-ray photons incident thereon whose energy falls in a plurality of bins of different energy ranges respectively, within a period of time; wherein the detector is configured to sum the numbers counted by all the pixels from only the bins of the same energy range; wherein the detector is configured to identify the element based on the summed numbers. | 2020-04-16 |
20200116877 | X-RAY INSPECTION APPARATUS - Provided is an X-ray inspection apparatus that can inspect an object to be inspected with high sensitivity by using a multiple-stage X-ray sensor without widening a slit of a collimator, and can prevent the apparatus from becoming large-sized due to prevention of X-ray leakage. An X-ray inspection apparatus includes an X-ray irradiation portion having an X-ray tube generating an X-ray, an X-ray sensor having detection element arrays in a plurality of stages in a carrying direction, the detection element arrays each formed of a plurality of detection elements linearly arranged in a main scanning direction orthogonal to the carrying direction on a plane parallel to the carrying surface of an object to be inspected, a collimator restricting an X-ray irradiation region for the X-ray sensor, and an imaging condition input section that designates one or more detection element arrays to be used for inspection. | 2020-04-16 |
20200116878 | PSEUDOGAS NEUTRON DETECTOR - Embodiments of the present disclosure include a system for detecting neutrons with a housing, a gas chamber at least partially defined by the housing, an anode extending through at least a portion of the gas chamber, and a pseudogas arranged within the gas chamber. The pseudogas comprises a mixture of gas and suspended solid particles that contain an element with a high cross-section for thermal neutron capture. | 2020-04-16 |
20200116879 | GAMMA-RAY SPECTRUM CLASSIFICATION - A gamma-ray spectrum classification apparatus, comprising circuitry configured: to provide a denoising autoencoder to receive gamma-ray spectrum data representing a gamma-ray spectrum of a material to be classified and to determine feature data indicative of one or more features representative of the gamma-ray spectrum data; and to provide a classification neural network to receive the feature data and to classify the material to be classified as one of a plurality of predetermined classifications using the feature data. | 2020-04-16 |
20200116880 | OVERLAPPED SCHEDULING AND SORTING FOR ACOUSTIC TRANSDUCER PULSES - A device and method used to increase the resolution when imaging, measuring and inspecting wells, pipes and objects located therein. The device comprises an array of acoustic transducers that both transmit and receive acoustic signals. Scan lines may be overlapped by interlacing transmission and receiving windows thus increasing either the resolution or logging speed drastically compared to conventional approaches. The sequence of the scan lines making up an imaging frame is created by stratifying physically close lines and randomly selecting from within each stratum, preventing interference from neighboring transducers, signals and acoustic artifacts that fundamentally limit logging speed and resolution using conventional methods. | 2020-04-16 |
20200116881 | HETEROGENEOUS SUBSURFACE IMAGING SYSTEMS AND METHODS - A system for near-surface geophysical subsurface imaging for detecting and characterizing subsurface heterogeneities comprises an instrument that outputs probing electromagnetic signals through a ground surface that interact and are affected by scattered signals of acoustic waves that travel through the ground surface and further senses vibrational modes of a subsurface below the ground surface; an imaging device that dynamically generates a time sequence of images of properties of the acoustic waves and maps elastic wave fields of the acoustic waves; and a processor that analyzes dynamic multi-wave data of the images to quantify spatial variations in the mechanical and viscoelastic properties of the subsurface. | 2020-04-16 |
20200116882 | METHOD FOR AUTOMATICALLY LOCATING MICROSEISMIC EVENTS BASED ON DEEP BELIEF NEURAL NETWORK AND COHERENCE SCANNING - A method for automatically locating microseismic events based on a deep belief neural network and coherence scanning includes the following steps: randomly selecting data of one three-component geophone; performing arrival time picking and phase identification of microseismic events on the data thereof using a deep belief neural network; and then, on the basis of the obtained arrival time and phases, performing coherence scanning and positioning imaging using the microseismic data received by all three-component geophones. In the image, the space position representing the highest stacking energy may be considered as a real space position where the microseismic events occur, implementing the automatic and accurate locating of the microseismic events. | 2020-04-16 |
20200116883 | Method To Improve DAS Channel Location Accuracy Using Global Inversion - A method for identifying a location of a distributed acoustic system channel in a distributed acoustic system. The method may comprise generating a two or three dimensional layer model interface with an information handling system, preparing a P-wave first arrival pick time table, estimating an initial model layer properties, estimating a location of the distributed acoustic system channels, preparing an overburden file of layer properties, running an anisotropic ray tracing, defining an upper and a lower limits for model parameters, specifying parameters for the inversion, running an inversion, selecting a solution based at least in part on stored error predictions, and calculating a mean and a standard deviation of an inverted model parameter. | 2020-04-16 |
20200116884 | Downhole Ultrasound Image Correction in Oil Based Mud - A method for generating acoustic images corrected for distortions caused by attenuation of the ultrasonic signal by the mud may comprise disposing a downhole tool into a borehole, transmitting a pressure pulse from at least one transducer into the borehole, recording an echo with the at least one transducer, measuring a travel time, measuring an amplitude, determining a geometry of the borehole, determining a location of the downhole tool in the borehole, calculating an incident angle, mapping a mud attenuation, and correcting an image. A system for generating acoustic images corrected for distortions caused by attenuation of the ultrasonic signal by the mud comprising a downhole tool that may comprise a measuring assembly, wherein the measuring assembly comprises at least one transducer and wherein the at least one transducer is configured to emit a pressure pulse and record an echo. The system may further comprise an information handling system. | 2020-04-16 |
20200116885 | Separation of Multiple Seismic Sources of Different Types by Inversion - A method of seismic exploration above a region of the subsurface containing structural or stratigraphic features conducive to the presence, migration, or accumulation of hydrocarbons comprises accessing at least a portion of a blended seismic source survey, separating the at least two interfering seismic source excitations using inversion separation, producing one or more source gathers based on the separating, and using the one or more source gathers to explore for hydrocarbons within said region of the subsurface. The blended source seismic survey contains at least two interfering seismic source excitations therein, and the seismic source excitations can be produced by seismic source types having different signatures or frequency characteristics. | 2020-04-16 |
20200116886 | MODULAR SEISMIC UNIT STORAGE SYSTEM WITH GANTRY ROBOT AND CHARGING MAGAZINE - A modular seismic unit storage and handling system with a gantry robot and charging magazine is provided. The storage and handling system can include a storage container. The storage and handling system can include a top hat and a top hat extension. The storage and handling system can include an automated connection and charging magazine. The top hat can be connected to a gantry robot. The gantry robot can include a robotic arm. | 2020-04-16 |
20200116887 | DATA QUALITY MONITORING AND CONTROL SYSTEMS AND METHODS - A system for monitoring data quality in a drilling operation includes a controller and a plurality of data sources configured to provide data to the controller. The controller is configured to receive data from a plurality of data sources during a drilling operation; apply data quality rules to the received data; calculate a score for each data source of the plurality of data sources based on adherence of the received data for that data source to the data quality rules; compare the calculated scores for the plurality of data sources to determine which calculated scores meet or exceed a threshold score; receive a selection of one of the plurality of data sources having a calculated score that meets or exceeds the threshold score; and use the data from the selected data source. Methods and non-transitory machine-readable media for monitoring data quality are also provided. | 2020-04-16 |
20200116888 | Passive Magnetic Field Detector - A passive magnetic flux detector (PMFD) is provided for indicating an ambient magnetic field. The PMFD includes a coil, a rectifier, and an indicator. The indicator is either a light emitting diode (LED), a piezoelectric speaker or both. | 2020-04-16 |
20200116889 | RINGING REDUCTION IN A NUCLEAR MAGNETIC RESONANCE LOGGING TOOL - A nuclear magnetic resonance (NMR) logging tool configured to be positioned in a borehole created in a subsurface formation. The NMR logging tool includes a magnet to induce a magnetic field in the subsurface formation, a transmission line, and a first shield positioned between the magnet and the transmission line. The NMR logging tool includes a transmitter and an antenna coupled to the transmitter by the transmission line. The antenna is to transmit a radio frequency (RF) magnetic field into the subsurface formation in response to the transmitter supplying power by the transmission line. | 2020-04-16 |
20200116890 | MULTIPLE-SCANNER X-RAY SYSTEM INCLUDING SYNCHRONIZED X-RAY MARKERS - Various embodiments of the present invention are directed towards a system and method for synchronized markers. A multiple-scanner X-ray system includes a belt passing by an upper X-ray scanner and a lower X-ray scanner. An upper belt portion is conveyed in a first direction by the upper X-ray scanner and a lower belt portion is conveyed in a second direction opposite the first direction by the lower X-ray scanner, to obtain upper and lower X-rays. A plurality of X-ray reactive markers are positionally synchronized relative to each other and the belt and conveyed by the belt to cause upper visual marker information, corresponding to a visual appearance of the upper scanned belt section, to be consistent with i) upper X-ray marker information of the upper X-ray, and ii) lower X-ray marker information of the lower X-ray. | 2020-04-16 |
20200116891 | Obtaining Inelastic Spectra Free of Detector Born Gamma Rays Induced by Neutrons - In an embodiment, a method includes receiving a first measurement of gamma rays via a detector during a first period of time, receiving a second measurement of gamma rays via the detector during a second period of time, removing the second measurement from the first measurement to produce an inelastic spectrum, determining a spectral slope from the inelastic spectrum, determining a scaling factor based on the spectral slope, determining a spectral shape associated with the detector, determining a detector-induced spectrum by applying the scaling factor to the spectral shape, and removing the detector-induced spectrum from the inelastic spectrum to produce a clean inelastic spectrum. | 2020-04-16 |
20200116892 | TECHNIQUES FOR OPTIMALLY SENSING FULL CONTAINERS - A series of techniques incorporated in two sensing methods that enable fullness detection whilst minimizing the current consumption of the battery operated wireless electronic circuitry that implements the detection. | 2020-04-16 |
20200116893 | USE OF THERMOPILES TO DETECT HUMAN LOCATION - A method of detecting presence and location uses sensor data received from a plurality of thermopiles, each thermopile having a different field of view. In response to detecting a change in the sensor data, stored background values for each field of view are accessed and then the location of a body (e.g. a human or animal)is determined based on differences between the sensor data and sensor values predicted using a forward model and the stored background values for each field of view. Having determined the location, the stored background values are updated based on differences between the sensor data and the predicted sensor values for a body at the determined location. | 2020-04-16 |
20200116894 | DEVICES AND METHODS FOR MEASURING TEMPERATURE, OXIDATION REDUCTION POTENTIAL, AND WATER-LEVEL WITHIN A SUBSURFACE FORMATION - A subsurface monitoring system and method is provided that includes a sensor array and a monitoring system in communication with the array. The sensor array may include several sensors, such as subsurface temperature sensors, water-level sensors, and oxidation reduction potential sensors may be disposed in a vertical and/or horizontal fence through the subsurface of the monitored site. The sensor array may measure, collect, and analyze the subsurface conditions and provide the measurements to a monitoring system. The monitoring system may provide access the measurements via a user interface for analysis of the measurements. In addition, the monitoring system may process the measurements to generate one or more graphs of information for better understanding of the conditions of the subsurface of the monitored site. | 2020-04-16 |
20200116895 | CALIBRATING TIME-LAPSE SEISMIC IMAGES FOR PRODUCTION OPERATIONS - A system and method can be used for to calibrating time-lapse seismic volumes by cross-migration rescaling and reorientation for use in determining optimal wellbore placement or production in a subsurface environment. Certain aspects include methods for cross-migration of data sets processed using different migration techniques. Pre-processing of the data sets, optimization of rescaling and reorientation, and identification of adjustment parameters associated with minimum global error can be used to achieve a time-dependent formation data set that addresses error in all input data sets. | 2020-04-16 |
20200116896 | COMPOSITION, FILM, LENS, SOLID STATE IMAGING ELEMENT, AND COMPOUNDS - An object of the present invention is to provide a composition capable of forming a film having a high refractive index and excellent exterior characteristics. Another object of the present invention is to provide a film, a lens, and a solid-state imaging element in which the composition is used. Still another object of the present invention is to provide novel compounds. | 2020-04-16 |
20200116897 | Illuminated Contact Lens and System for Improved Eye Diagnosis, Disease Management and Surgery - A new ocular contact lens has been designed to increase the amount of light reaching the retina. The contact lens edge is chamfered to redirect and increase the light reaching the retina. A light source encircles and contacts the straight or curved chamfered edge. Additionally, a reflective cylinder and its top wall encircle the lens to block any loss of light. This distal edge of the contact lens may be rounded to increase the angle of retina visible. A new ocular imaging camera has a low-light camera subassembly with server, a photosensor next to low-light camera, a short cylindrical housing, a space between the camera subassembly and the housing, an internal program in server to detect good or poor image quality and an alarm for poor image quality, wherein an operator recaptures the image. A system has a highly efficient method to screen and diagnose a large number of patients using the new ocular contact lens and ocular imaging camera. The system receives and processes the photographs. The photographs are transmitted to eye care specialists' smart phone, tablet or virtual reality device for evaluation. As specified, the eye care specialist separates normal from abnormal, diagnoses the abnormality, and may even provide detailed information, such as the grade of the abnormality. The server receives this information and automatically generates the suitable report for the healthcare professional. The server also processes payment to the eye care specialist. | 2020-04-16 |
20200116898 | REFLECTIONLESS WINDOW, METHOD FOR MANUFACTURING SAME, AND REFLECTIONLESS WINDOW FOR INVASIVE SENSOR - A reflectionless window is disclosed. The reflectionless window comprises: a transparent window; a plurality of first nanocolumns arranged on a first surface of the transparent window; and a plurality of second nanocolumns having a height smaller than that of the first nanocolumns, the plurality of second nanocolumns being arranged on at least one surface selected from the upper surface of the plurality of first nanocolumns and a side surface thereof and being arranged in an area on the first surface of the transparent window in which the plurality of first nanocolumns are not arranged. | 2020-04-16 |
20200116899 | DISPLAY DEVICE - A display device includes a window film with light leak prevention layers that may withstand repeated folding operations. The window film includes a first film having a first surface configured to provide an outermost surface and a second surface, a second film disposed below the first film and having a third surface and a fourth surface, a first color layer disposed on at least one of the second surface and the third surface, and a second color layer disposed below the first color layer and disposed on at least one of the third surface and the fourth surface. | 2020-04-16 |
20200116900 | METALENS, METHOD FOR MAKING SAME, AND OPTICAL DEVICE USING SAME - A metalens of greatly reduced depth includes a lens body and many columnar microstructures. The lens body includes first and second surfaces. The columnar microstructures are formed on the first surface and spaced apart from each other. Each columnar microstructure has a particular shape and extends in a direction away from the first surface to a height of 500 nm to 1500 nm. The present disclosure also provides a method for making the above metalens and an optical element using the metalens. | 2020-04-16 |
20200116901 | Optical Element, Mobile Phone Cover Plate and Mold for Manufacturing the Optical Element - An optical element, a mobile phone cover plate provided with the optical element, and a mold for manufacturing the optical element. The optical element comprising at least two types of arranged optical units, the optical units comprising optical structures producing light shadow effects; wherein a light shadow effect produced by an optical structure of one type of optical units is different from a light shadow effect produced by an optical structure of another type of optical units. The optical units are arranged and there are at least two types of different optical units, the optical structures there of being able to produce different light shadow effects, so that the optical element has a good visual effect, and when it is applied in the field of decoration, it is able to enhance a decoration effect, and make the decoration rich in visual senses and pictures vivid. | 2020-04-16 |
20200116902 | LIGHT EMITTING DEVICE WITH SELF-ALIGNING PREFORMED LENS - A light emitting diode (LED) light source is disclosed. The LED light source comprises a lens structure that includes a hemispherical dome with a base. The LED light source comprises a cavity in the base. The cavity has an opening and a taper such that a cross-section area within the cavity is smaller than an area of the opening. The LED light source comprises a light emitting device comprising an LED die contacting the taper. The taper allows for easy insertion of the LED die into the lens structure. The taper serves to accurately align the LED die when the LED die is inserted. | 2020-04-16 |
20200116903 | OPTICAL DEVICE - The optical device includes: a beam radiation unit configured to radiate light; a first aspheric lens unit including a first focal point, the first aspheric lens positioned on a light output side of the beam radiation unit such that the first focal point is formed at a light output surface of the beam radiation unit on the light output side of the beam radiation unit; and second aspheric lens units including second focal points, the second aspheric lens units positioned on the light output side of the beam radiation unit such that the second focal points are formed to overlap the first focus at the light output surface of the beam radiation unit. | 2020-04-16 |
20200116904 | BRIGHTNESS ENHANCING FILM WITH EMBEDDED DIFFUSER - Brightness enhancing films with embedded diffusers are described. More specifically, films including a birefringent substrate, a prismatic layer carried by the substrate having linear prisms, and an embedded structured surface disposed between the substrate and the prismatic layer are disclosed. The embedded structured surface may include closely-packed structures. Processes for producing embedded structured surfaces having particular topographies are also disclosed. | 2020-04-16 |
20200116905 | OPTICAL SEMICONDUCTOR ELEMENT COATING SHEET - A sheet used for coating an optical semiconductor element is used for directly or indirectly covering an optical semiconductor element, and includes a white layer containing white particles; and a light diffusion layer containing light-diffusing particles, in this order in a thickness direction. | 2020-04-16 |
20200116906 | ELEMENT FOR MANIPULATING LIGHT - A method of using a non-woven material, preferably a wet-laid non-woven material, as a light-distribution element, includes: providing the non-woven material, the non-woven material including: (a1) 1-50 wt % matrix fibers; (a2) 50-99 wt % of at least partially thermally fused binder fibers; and (b) 20-200 wt % of at least one filler polymer. The proportions by weight of matrix fibers, at least partially thermally fused binder fibers, and at least one filler polymer in each case relate to a total weight of the non-woven material without the at least one filler polymer The matrix fibers include at least one matrix fiber polymer and the at least partially thermally fused binder fibers include at least one binder fiber polymer. The at least one matrix fiber polymer and/or at least one binder fiber polymer independently of one another have a refractive index “n” of 1.3 to 1.7. | 2020-04-16 |
20200116907 | IMAGING DEVICE, HEAD-MOUNTED DISPLAY, AND METHOD FOR GENERATING AN IMAGE FROM AN ORIGINAL IMAGE IN A HEAD-MOUNTED DISPLAY - An imaging apparatus for smartglasses includes an image generator element arrangement having a number of image generator elements, on which a corresponding number of original partial images is represented, a number of imaging channels comprising in each case at least one image-forming reflection surface and/or at least one image-forming refraction surface, said number corresponding to the number of image generator elements, wherein each of the imaging channels is associated with one of the image generator elements and transmits one of the original partial images, and a spectacle lens, which is common to all imaging channels and via which the imaging channels are directed in the direction of an observer's eye. The image-forming reflection surfaces and/or refraction surfaces of the imaging channels are surfaces of a prism that is arranged on the spectacle lens. | 2020-04-16 |
20200116908 | DIFFRACTIVE OPTICAL ELEMENT - A diffractive optical element capable of further reducing zero-order diffraction light includes a diffraction layer including: a high refractive index part in which a plurality of projections are arranged side by side in a cross-sectional shape; and a low refractive index part that has a lower refractive index than the high refractive index part and that includes a recess formed at least between the projections. The projections have a sawtooth shape or a shape that imitates a sawtooth shape by a multi-stage outline shape. An inclined plane that is inclined with respect to a sheet surface of the diffractive optical element, which has a sawtooth shape or a sawtooth shape imitated by a multi-stage outline shape, has a concave curved plane that is concave toward the projections. | 2020-04-16 |
20200116909 | METHODS AND SYSTEM FOR CREATING FOCAL PLANES USING AN ALVAREZ LENS - Configurations are disclosed for presenting virtual reality and augmented reality experiences to users. The system may comprise a lens assembly comprising two transmissive plates, a first of the two transmissive plates comprising a first surface sag based at least in part on a cubic function, and a DOE to direct image information to a user's eye; wherein the DOE is placed in between the two transmissive plates of the lens assembly, and wherein the DOE is encoded with the inverse of the cubic function corresponding to the surface sag of the first transmissive plate; such that a wavefront created by the encoded DOE is compensated by the wavefront created by the first transmissive plate, thereby collimating light rays associated with virtual content delivered to the DOE. | 2020-04-16 |
20200116910 | Solar Control Coating with Enhanced Solar Control Performance - A solar control coating ( | 2020-04-16 |
20200116911 | METHOD OF FABRICATING ANISOTROPIC OPTICAL INTERFERENCE FILTER - In a method of manufacturing a one-dimensionally varying optical filter, a substrate is coated to form a stack of layers of two or more different types. The coating may, for example, employ sputtering, electron-beam evaporation, or thermal evaporation. During the coating, the time-averaged deposition rate is varied along an optical gradient direction by generating reciprocation between a shadow mask and the substrate in a reciprocation direction that is transverse to the optical gradient direction. In some approaches, the shadow mask is periodic with a mask period defined along the direction of reciprocation, and the generated reciprocation has a stroke equal to or greater than the mask period along the direction of reciprocation. The substrate and the shadow mask may also be rotated together as a unit during the coating. Also disclosed are one-dimensionally varying optical filters, such as linear variable filters, made by such methods. | 2020-04-16 |
20200116912 | POLARIZATION-BASED FILTERS WITH ANGLE-SENSITIVE TRANSMISSION - Polarization-based optical angle-filters disclosed herein can be engineered to transmit a prescribed amount of light as a function of incidence angle and azimuth. Such filters can transmit light without introducing artifacts, making them suitable for the image-path of an optical system. One example may include an angle-filter having an input circular polarizer, an analyzing circular polarizer, and a retarder positioned between the circular polarizers, the retarder having a thickness-direction retardation. The thickness-direction retardation of the retarder (R | 2020-04-16 |
20200116913 | LIGHT SYSTEM FOR SUPPLYING LIGHT - A light system having a light supply arrangement, a Homogenizing Light Pipe (HLP) and a fiber bundle is disclosed. The light supply arrangement comprises a light source and is arranged to supply light to an input end of the HLP. The HLP is configured for scrambling the received light and for delivering a beam of light to a common packed input end of the fiber bundle. | 2020-04-16 |
20200116914 | FIBER OPTIC SHELVING SYSTEM - A fiber optic shelving system includes a shelf including a plurality of holes, a plurality of fiber optic filaments, each of the plurality of fiber optic filaments having a first end and a second end, and the first end being coupled to one of the plurality of holes, a first camera configured to capture an image of the terminal surfaces of the plurality of fiber optic filaments, and a second camera configured to capture an image of a side of one or more products on the shelf. The fiber optic shelving system identifies, among the plurality of holes, a set of holes that are blocked from light based on the captured image of terminal surfaces of the second ends of the plurality of fiber optic filaments, and determines a number of products on the shelf based on the identified set of holes blocked from light and the captured image of the side of one or more products on the shelf. | 2020-04-16 |
20200116915 | LIGHTING DEVICE - A lighting device includes a light source, an accommodating member, a light guide member, and an elastic member. The accommodating member accommodates the light source. The accommodating member includes a bottom and a vertical wall projecting from an edge of the bottom on a front surface side of the bottom. The light guide member has a thin plate shape. The light guide member is disposed on the front surface side of the bottom and configured to guide light emitted by the light source. The elastic member has elasticity. The elastic member is disposed between the vertical wall and the light guide member. At least one of the vertical wall and the light guide member includes a fitting portion. The elastic member is fitted to the fitting portion. | 2020-04-16 |
20200116916 | LIGHT GUIDE PLATE, BACKLIGHT MODULE AND DISPLAY DEVICE - A light guide plate, a backlight module and a display device in the field of display technology are provided. The light guide plate includes a light guide plate body and a prism structure located at at least one end of the light guide plate body. The prism structure includes a light incident surface and at least one reflective surface, and incident light from the light incident surface is can be reflected by the at least one reflective surface into the light guide plate body. | 2020-04-16 |
20200116917 | BACKLIGHT DEVICE AND DISPLAY DEVICE INCLUDING THE SAME - A display device includes: a light guide plate having upper and lower opposed surfaces, the light guide plate including: a first portion having a side surface; and an second portion extending from the first portion along a first direction; a display panel disposed on the upper surface of the light guide plate; light guide patterns disposed on the lower surface; a first light source facing the side surface in the first direction; and a second light source facing the lower surface in a second direction intersecting the first direction. | 2020-04-16 |
20200116918 | MICROPRISM MULTIBEAM ELEMENT BACKLIGHT AND MULTIVIEW DISPLAY USING SAME - A multiview backlight and a multiview display employ a microprism multibeam element to emit a plurality of directional light beams having principal angular directions corresponding to view directions of the multiview display. The multiview backlight includes a light guide and the microprism multibeam element extending from a surface of the light guide. The microprism multibeam element has an input aperture configured to receive a portion of guided light and an output aperture configured to emit the plurality of directional light beams. The microprism multibeam element includes a microprism having an inclined sidewall configured to reflect the received guided light portion and provide the plurality of directional light beams. The multiview display includes the multiview backlight and an array of multiview pixels configured to provide different views of the multiview display from the plurality of directional light beams. | 2020-04-16 |
20200116919 | OPTICAL FILM - Disclosed is an optical film includes a first prism sheet including a plurality of first prisms arranged on one side of the first prism sheet, a second prism sheet including a plurality of second prisms arranged on one side of the second prism sheet, and a diffuser sheet including a plurality of first protrusions and a plurality of second protrusions arranged on one side of the diffuser sheet. The optical film is prepared to have a height of the first protrusions being greater than a height of the second protrusions. The optical film is further prepared that the first prism sheet, the second prism sheet and the diffuser sheet laminated where the first protrusions of the diffuser sheet is adhered to a side of the first prism sheet where no first prisms are arranged, and the first prisms of the first prism sheet are adhered to a side of the second prism sheet where no second prisms are arranged. | 2020-04-16 |
20200116920 | DISPLAY DEVICE - A display device is capable of substantially reducing or preventing warping or deformation thereof by using a bimetallic effect. The display device includes a backlight unit including at least one light source; a light source circuit board at which the light source is disposed; a first heat dissipation plate configured to receive heat generated from the light source through the light source circuit board, and to discharge the heat; a bottom case configured to accommodate the light source, the light source circuit board, and the first heat dissipation plate; and a second heat dissipation plate configured to resist a deformation force that is applied to the first heat dissipation plate or the bottom case, the second heat dissipation plate has a thermal expansion coefficient different from a thermal expansion coefficient of the first heat dissipation plate. | 2020-04-16 |
20200116921 | OPTICAL SHEET FOR LIGHT GUIDE PLATE TYPE LIQUID CRYSTAL DISPLAY, BACKLIGHT UNIT FOR LIGHT GUIDE PLATE TYPE LIQUID CRYSTAL DISPLAY, AND LIGHT GUIDE PLATE TYPE LIQUID CRYSTAL DISPLAY - The present invention provides an optical sheet for a light guide plate type liquid crystal display, including a low refractive index layer having an extremely low refractive index. The optical sheet A | 2020-04-16 |
20200116922 | DISPLAY DEVICE AND ASSEMBLING METHOD THEREOF - A display device including a back plate, a light emitting module, a light guide plate and a fixing member is provided. The back plate has an inner surface and an outer surface opposite to the inner surface. The light emitting module is disposed on a side of the inner surface of the back plate. The light guide plate is disposed opposite to the inner surface of the back plate. The fixing member includes a portion, which leans on the outer surface of the back plate. | 2020-04-16 |
20200116923 | REDUNDANT CORE IN MULTICORE OPTICAL FIBER FOR SAFETY - An optical fiber includes multiple optical cores configured in the fiber including a set of primary cores and an auxiliary core. An interferometric measurement system uses measurements from the multiple primary cores to predict a response from the auxiliary core. The predicted auxiliary core response is compared with the actual auxiliary core response to determine if they differ by more than a predetermined amount, in which case the measurements from the multiple primary cores may be deemed unreliable. | 2020-04-16 |
20200116924 | LIGHT-DIFFUSING OPTICAL ELEMENTS HAVING CLADDING WITH SCATTERING CENTERS - A light-diffusing optical element with efficient coupling to light sources with high numerical aperture. The light-diffusing optical element includes a higher index core surrounded by a lower index cladding. The cladding includes scattering centers that scatter evanescent light entering the cladding from the core. The scattered light exits the element to provide broad-area illumination along the element. Scattering centers include dopants, nanoparticles and/or internal voids. The core may also include scattering centers. The core is glass and the cladding may be glass or a polymer. The element features high numerical aperture and high scattering efficiency. | 2020-04-16 |
20200116925 | OPTICAL FIBER AND OPTICAL TRANSMISSION SYSTEM - An optical fiber includes a core, a first clad that is provided on an outer circumferential portion of the core and has a refractive index lower than that of the core, and a second clad that is provided on an outer circumferential portion of the first clad and has a refractive index lower than that of the first clad. In the optical fiber, a mode field diameter at a wavelength of 1.55 μm is equal to or greater than 11.5 μm, a cutoff wavelength is equal to or less than 1.53 μm, a bending loss at a bending radius of 30 mm and a wavelength of 1.625 μm is equal to or less than 2.0 dB/100 turns, and a delay time of transmission light per unit length at a wavelength of 1.55 μm is equal to or less than 4.876 μs/km. | 2020-04-16 |
20200116926 | USE OF VARIABLE BEAM PARAMETERS TO CONTROL SOLIDIFICATION OF A MATERIAL - A method for forming an article includes providing a material having a first material property; forming a melt pool by exposing the material to an optical beam having at least one beam characteristic, wherein the melt pool has at least one melt pool property determinative of a second material property of the material; and modifying the at least one beam characteristic in response to a change in the melt pool property. | 2020-04-16 |
20200116927 | METHODS OF FABRICATING INTEGRATED CIRCUIT DEVICES WITH COMPONENTS ON BOTH SIDES OF A SEMICONDUCTOR LAYER - A photonic integrated circuit may include a silicon layer including a waveguide and at least one other photonic component. The photonic integrated circuit may also include a first insulating region arranged above a first side of the silicon layer and encapsulating at least one metallization level, a second insulating region arranged above a second side of the silicon layer and encapsulating at least one gain medium of a laser source optically coupled to the waveguide. | 2020-04-16 |