Abstract: A method for determining spin of a projectile is disclosed that includes generating an electromagnetic radar signal and transmitting the electromagnetic radar signal towards a projectile, receiving a reflected electromagnetic radar signal from the projectile and transforming the reflected electromagnetic radar signal from a time domain to a frequency domain to generate a frequency domain signal. A peak frequency component of the frequency domain signal is identified, shoulder frequencies adjacent to the peak frequency component in the frequency domain signal are identified, and an estimate of the spin of the projectile as a function of the shoulder frequencies is generated.

Abstract: A method for determining spin of a projectile comprising generating an electromagnetic radar signal and transmitting the electromagnetic radar signal towards a projectile. Receiving a reflected electromagnetic radar signal from the projectile. Identifying a component of the reflected electromagnetic radar signal, and performing an autocorrelation process on the reflected electromagnetic radar signal using the component to generate an estimate of a spin of the projectile as a function of the autocorrelation process.

Abstract: In an optoelectronic detection device (1) with at least one optical transmitting unit (3) with an electromagnetic pulse generator (4) for emitting electromagnetic emitted pulses (5), and at least one optical receiver for receiving reflected emitted pulses (7) that provides a reception signal, formed depending on the reflected emitted pulse, to an evaluation device (10), wherein the optical receiver (2) is configured to provide a trigger signal (11) for the control of the optical transmitter (3), an improved compensation of the optoelectronic detection device for errors resulting from temperature or ageing should be achieved.

Abstract: A system for plant parameter detection, including: a plant morphology sensor having a first field of view and configured to record a morphology measurement of a plant portion and an ambient environment adjacent the plant, a plant physiology sensor having a second field of view and configured to record a plant physiology parameter measurement of a plant portion and an ambient environment adjacent the plant, wherein the second field of view overlaps with the first field of view; a support statically coupling the plant morphology sensor to the physiology sensor, and a computing system configured to: identify a plant set of pixels within the physiology measurement based on the morphology measurement; determine physiology values for each pixel of the plant set of pixels; and extract a growth parameter based on the physiology values.

Abstract: A safety system (10, 64) for safeguarding the surrounding area of a vehicle (50), wherein the safety system (10, 64) comprises an optoelectronic safety sensor (10) for monitoring the surrounding area, a first input (40) connectable to a first kinematic sensor (56) for determining a first speed value for the speed of the vehicle (50), and a control and evaluation unit (34, 64) configured to detect objects in the surrounding area based on sensor data of the optoelectronic safety sensor (10) and to evaluate whether or not the vehicle (50) initiates a safety reaction, taking into account the speed of the vehicle (50), further comprising an inertial measurement unit (38) for determining movement information of the vehicle (50), with the control and evaluation unit (34, 64) being configured to compare the first speed value and the movement information with each other.

Abstract: Example implementations may relate to determining a strategy for a drop process associated with a light detection and ranging (LIDAR) device. In particular, the LIDAR device could emit light pulses and detect return light pulses, and could generate a set of data points representative of the detected return light pulses. The drop process could involve a computing system discarding data point(s) of the set and/or preventing emission of light pulse(s) by the LIDAR device. Accordingly, the computing system could detect a trigger to engage in the drop process, and may responsively (i) use information associated with the environment around the vehicle, operation of the vehicle, and/or operation of the LIDAR device as a basis to determine the strategy for the drop process, and (ii) engage in the drop process in accordance with the determined strategy.

Abstract: In one implementation, a method includes receiving versions of a message from a first satellite-based receiver and a second satellite-based receiver that both received a radio frequency (“RF”) transmission of the message, the message comprising a self-reported position of a transmitter of the message. The method also includes determining a time difference between a first arrival time of the RF transmission of the message at the first satellite-based receiver and a second arrival time of the RF transmission of the message at the second satellite-based receiver. The method further includes determining a measure of the likelihood that the self-reported position of the transmitter is valid based on the time difference between the first and second arrival times. The method still further includes transmitting an indication of the measure of the likelihood that the self-reported position is valid.

Abstract: Improved methods and systems for position acquisition and/or monitoring are disclosed. The position acquisition and/or monitoring can be performed with improved intelligence so that data acquisition, transmission and/or processing is reduced. As a result, the position acquisition and/or monitoring is able to be performed in a power efficient manner.

Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. Disclosed are method and apparatus for a semi-persistent scheduling (SPS) for vehicle to everything (V2X) in a wireless communication system.

Abstract: A method for detecting a probe signal at an estimated code delay and an estimated doppler frequency includes: (i) dividing a period of the probe signal into sections each of a predetermined duration; (ii) assigning to each section one of a multiple code categories, each code category being indicative of a signal pattern of the probe signal within the section; and (iii) selecting multiple phase categories for a sinusoidal signal, each phase category being indicative of a range of phases in the sinusoidal signal.

Abstract: Method of real-time adaptive digital pulse signal processing for high count rate gamma-ray spectroscopy applications includes receiving a preamplifier signal at a pulse deconvolver, the preamplifier signal including resolution deterioration resulting from pulse pile-up. The method further includes generating a deconvoluted signal, by the pulse deconvolver, from the preamplifier signal, the deconvoluted signal having less resolution deterioration as compared to the received preamplifier signal. The method furthermore includes shaping of the deconvoluted signal by a trapezoid filter, the shaping comprising adjusting a shaping parameter of the trapezoid filter for an incoming signal based on a time separation from a subsequent incoming signal.

Abstract: A silicon drift detector includes a housing and a silicon drift detection element that is disposed inside the housing. The housing includes an opening that is not closed. The silicon drift detection element includes a top surface facing the opening, and a light shielding film is provided on the top surface.

Abstract: Systems, methods, and computer-readable media are provided for detecting sand in a production flow. An example method can include receiving acoustic field data generated by at least one acoustic sensor on a downhole tool lowered into a borehole of a production flow. The method can further include inputting the acoustic field data into an acoustic sand detection model and generating a sand flow signal based on output on the acoustic sand detection model.

Abstract: A method, computing system, and non-transitory computer-readable medium, of which the method includes receiving offset well data collected while drilling one or more offset wells, generating a machine learning model configured to predict drilling risks from drilling measurements or inferences, based on the offset well data, receiving drilling parameters for a new well, determining that the drilling parameters are within an engineering design window, generating a drilling risk profile for the new well using the machine learning model, and adjusting one or more of the drilling parameters for the new well, after determining the drilling parameters are within the engineering design window, and after determining the drilling risk profile, based on the drilling risk profile.

Abstract: A presence detection device including a sensor connected to a microcontroller, the sensor including a first detection capacitor arranged in a first detection area, and a second detection capacitor arranged in a second detection area. The microcontroller is configured to recurrently repeat a phase of measuring a measurement signal by charging/discharging the first detection capacitor from/into the second detection capacitor, and to detect a presence of a user in the first detection area and/or the second detection area according to the measurement signal. Also disclosed are a motor vehicle including a detection device and a detection method.

Abstract: Born Scattering Inversion (BSI) systems and methods are disclosed. A BSI system may be incorporated in a well system for accessing natural gas, oil and geothermal reserves in a geologic formation beneath the surface of the Earth. The BSI system may be used to generate a three-dimensional image of a proppant-filled hydraulically-induced fracture in the geologic formation. The BSI system may include computing equipment and sensors for measuring electromagnetic fields in the vicinity of the fracture before and after the fracture is generated, adjusting the parameters of a first Born approximation model of a scattered component of the surface electromagnetic fields using the measured electromagnetic fields, and generating the image of the proppant-filled fracture using the adjusted parameters.

Abstract: Systems and methods are used to increase the penetration and reduce the exclusion zone of radiographic systems. An X-ray detection method irradiates an object with X-ray fanlets including vertically moving fan beams, each fanlet having an angular range smaller than the angular coverage of the object. The fanlets are produced by modulating an X-ray beam, synchronizing the X-ray beam and the fanlets, detecting the fanlets irradiating the object, collecting image slices from the detector array corresponding to a complete scan cycle of the fanlets, and processing the image slices collected for combining into a composite image.

Abstract: A method of free-field broadband calibration of hydrophone sensitivity based on pink noise, relating to the field of free-field underwater acoustic measurement, and is mainly used for broadband measurements of hydrophone sensitivity in free-field. The method of the present disclosure is to transmit a broadband pink noise signal by controlling the signal source, and to perform the synchronous processing and FFT to the transmitted current signal and the received voltage signal, such as interception and zero padding, and finally obtain the transfer function in the frequency domain; by analyzing the direct wave and the reflected wave in the water tank, the transfer function is averaged by a rectangular window to eliminate the influence of the reverberation of the reflected wave in the water tank, so as to obtain the broadband transfer function of the free-field between the transmitting transducer and the hydrophone.

Abstract: An illustrative embodiment of a data collection method and apparatus comprises at least one sensor that may be configured as a mobile data collection apparatus, which sensor may be in communication with a controller. The data collection apparatus may include one or more sensors, including but not limited to air pressure, air humidity, air temperature, road surface temperature, lightning distance, light level, precipitation rate, ozone level, carbon dioxide level, nitrous oxide level, and methane level; all of which may be in communication with a controller. One or more sensors may be positioned on or within a main assembly.

Abstract: A weather forecasting system has a data processing system that receives weather data from one or more sources and processes such data in conjunction with a weather forecasting algorithm in order to forecast weather for one or more geographic regions. In this regard, the weather data is input into a machine learning algorithm, which applies learned weights and relationships to the inputs in order to calculate at least one score indicating a probability that precipitation or other weather event will occur in the future within a certain time period (e.g., within the next 1 hour or some other unit of time) in one or more geographic regions. For each such geographic region, the weather forecasting logic may also predict the extent to which rain or other precipitation, lightning, or other weather event will occur during the time period.

Abstract: A weather forecasting system may receive satellite image samples and identify an updraft and components of the updraft within a cloud. These satellite image samples are collected over time (e.g., at 30 second to 1 minute time intervals). The system may identify an area of rotation and/or divergence at cloud top in a cumulus cloud or mature convective storm over time by comparing the samples and determine a parameter indicative of the updraft based on the area of rotation and divergence. The system may estimate aspects of the environment related to storm development and predict the occurrence of a weather event in the future based on the parameter and generate an output indicative of the occurrence.

Abstract: An object of the present invention is to provide a laminate in which the coloring of reflected light is reduced. The laminate includes an optical film having a light absorption anisotropic film formed using a composition including a dichroic substance and having a transmittance of more than 50%, a ?/4 plate, and a metal electrode in this order, in which in a case where a degree (%) of polarization at a wavelength of ? of the optical film is defined as P(?) and a reflectance (%) at the wavelength of ? of the metal electrode is defined as R(?), a ratio of a minimum value of R/P to a maximum value of R/P at wavelengths of 450 nm, 550 nm, and 650 nm is more than 85%.

Abstract: The invention is to provide an ophthalmic lens comprising a lens body, a polydopamine layer formed on the surface of the lens body and an antimicrobial layer bonded to the polydopamine layer, and manufacturing method thereof, wherein the antimicrobial layer is formed from a copolymer of carboxyl-containing polymer and zwitterionic polymer and a crosslinking agent, and the zwitterionic polymer can be selected from one of the group consisting of phosphorylcholine polymer, sulfobetaine polymer, carboxybetaine polymer and mixed-charge polymer or a combination thereof.

Abstract: The invention is to provide an ophthalmic lens and manufacturing method thereof. The ophthalmic lens comprises a lens body, a polydopamine layer formed on a surface of the lens body and a first cellulose nanofiber (CNF) layer bonded to the polydopamine layer.

Abstract: A wavelength conversion element includes a substrate, a wavelength conversion layer and an anti-reflective layer. The wavelength conversion layer is disposed on the substrate. The anti-reflective layer is disposed on the wavelength conversion layer. The anti-reflective layer includes a first adhesive layer having a plurality of pores. A thickness of the anti-reflective layer is 500 nm to 3000 nm, a pore diameter of each of the plurality of pores is 100 nm to 2500 nm, and the thickness of the anti-reflective layer is greater than the pore diameter of the plurality of pores. A manufacturing method of the aforementioned wavelength conversion element is also provided, through which the wavelength conversion element has the anti-reflective effect.

Abstract: A protective film includes a film layer removably attachable to a display module; and a film adhesive layer which removably attaches the film layer to the display module. The film layer includes a first region having a shape corresponding to less than a total shape of the display module, the first region including a second portion extending from the first portion, and having a second width along a first direction, and a third portion extending from the second portion and having a third width along the first direction which is greater than the second width. Detachment of the film layer from the display panel includes the third portion detached after the second portion, and the third portion includes a plurality of first cuts extended into a thickness of the film layer.

Abstract: An electronic apparatus includes an electronic panel foldable together with a window; and a first functional layer and a second functional layer each foldable together with the window and the electronic panel. The second functional layer is disposed farther from the window than the first functional layer, and has a thickness in a range from about 30 micrometers to about 50 micrometers and a modulus in a range from about 3 gigapascals to about 8 gigapascals, and the first functional layer is disposed closer to the window than the second functional layer, and has both a thickness equal to or greater than that of the second functional layer, and a modulus less than that of the second functional layer.

Abstract: A liquid crystal element (100) refracts and outputs light. The liquid crystal element (100) includes a first electrode (1), a second electrode (2), an insulating layer (21) that is an electric insulator, a resistance layer (22), a liquid crystal layer (23) including liquid crystal, and a third electrode (3). The insulating layer (21) is disposed between each location of the first and second electrodes (1) and (2) and the resistance layer (22) to insulate the first and second electrodes (1) and (2) from the resistance layer (22). The resistance layer (22) has an electrical resistivity higher than that of the first electrode (1) and lower than that of the insulating layer (21). The resistance layer (22) and the liquid crystal layer (23) are disposed between the insulating layer (21) and the third electrode (3). The resistance layer (22) is disposed between the insulating layer (21) and the liquid crystal layer (23).

Abstract: An actuator including an electrically conducting coil arranged on or integrated into a wall member, wherein the electrically conducting coil is arranged adjacent to a magnetic flux return structure. A magnet connected to a carrier, wherein the magnet interacts with the electrically conducting coil such that when a current is applied to the coil the coil is either moved towards the carrier along an axial direction or away from the carrier along the axial direction depending on a direction of the current within the coil. A magnetic flux guiding structure connected to the carrier, wherein magnetic flux is guided through the flux return structure and the flux guiding structure.

Abstract: The anti-Newton ring film of the present invention is manufactured by subjecting a liquid phase containing one or a plurality of polymers, one or a plurality of curable resin precursors, and a solvent to phase separation through spinodal decomposition in association with evaporation of the solvent to thereby form a phase-separated structure, and then curing the curable resin precursor to form an anti-Newton ring layer having an arithmetic mean roughness Ra of 30 nm or less. This film may have a parallel light transmittance of 90% or greater, a haze of 3% or less, and a transmission image clarity of 90% or higher as measured by an image clarity meter using an optical comb with a width of 0.5 mm. The anti-Newton ring layer may contain the polymer and the curable resin precursor at a ratio (weight ratio) of from 1/99 to 60/40. This film can effectively suppress the occurrence of a Newton's ring in a resistive touch screen, and can suppress glare even in a high-definition LCD and an organic EL display.

Abstract: In one embodiment, the application provides a photon engine comprising one or more cylinders comprising: a primary prism and a secondary prism which may or may not comprise a linear switch, the primary prism comprising one or more light beam inlets and multiple internal faces comprising a primary back face, the secondary prism comprising multiple lateral faces and having a secondary back face positioned adjacent to and spaced apart from the primary back face, forming a non-transparent interface between the primary prism and the secondary prism; the primary prism comprising a light expander/contractor device communicating with the light beam inlet, the light expander/contractor device comprising facets adapted to produce a processed light beam by expanding the diameter of a light beam entering from a given direction; an optic switch comprising a piezoelectric actuator operatively coupled with the primary prism and/or the secondary prism and adapted to (a) compress the secondary back face relative to the primar

Abstract: The present invention concerns a single crystalline diamond optical element production method. The method includes the steps of: —providing a single crystalline diamond substrate or layer; —applying a mask layer to the single crystalline diamond substrate or C layer; —forming at least one or a plurality of indentations or recesses through the mask layer to expose a portion or portions of the single crystalline diamond substrate or layer, and —etching the exposed portion or portions of the single crystalline diamond substrate or layer.

Abstract: An optical element includes a substrate and a pattern. The substrate has a top surface and a bottom surface. The pattern is provided on the top surface. The pattern includes multiple levels such that a thickness of the pattern is less than a design wavelength. The pattern is configured to focus an incident radiation, received at one of the top surface or the bottom surface of the substrate, at one or more prescribed focal locations on a detection plane. The one or more prescribed focal locations on the detection plane changes in proportion to a wavelength of the incident radiation. The detection plane is an achromatic focal plane when the incident radiation includes multiple wavelengths.

Abstract: Multilayer reflective polarizers are described. In particular, multilayer reflective polarizers that include both crystalline high index layers and low index layers are disclosed. These reflective polarizers may be particularly suitable for combiner applications, including automotive heads up display applications with demanding ambient environments. Layers are made of PET and PETG.

Abstract: Provided is a wire grid polarization plate that has heat resistance and excellent polarization properties, and has durability even in a thin wire structure with a small pitch, and an optical apparatus and a manufacturing method of a polarization plate. A periodic lamellar structure is formed with a material forming arrangement by self-assembling performance, and then, is metallized, and thus, metal wires arranged at a small pitch are prepared, and the obtained wires are fixed by a dielectric material.

Abstract: A wave plate 1 according to an embodiment includes a first birefringent substrate 10 including a first main surface and an optical axis 13 in a first direction; a second birefringent substrate 20 disposed over the first birefringent substrate 10 and including a second main surface and an optical axis 23 in a second direction; and a third birefringent substrate 30 disposed over the second birefringent substrate 20 and including a third main surface and an optical axis 33 in a third direction. The first birefringent substrate 10 and the second birefringent substrate 20 are made of the same kind of birefringent material. The first main surface, the second main surface, and the third main surface are disposed in parallel to one another. The first direction and the second direction are parallel to the first main surface and the second main surface.

Abstract: Techniques disclosed herein relate to optical devices. Resins with different optical properties can be deposited in different areas to provide increased optical functionality. It can be difficult to design a single photopolymer material that meets several technical requirements. Different resins can be deposited on the same substrate to make a single film with spatially varying properties. Different resins can also be applied to different substrates in a stack. By using different resins, an optical component can be made that meets several technical requirements.

Abstract: A light emitting module and a planar light source reduced in thickness are provided. A light emitting module includes: a light guide plate including a first main surface serving as a light emitting surface, a second main surface provided on a side opposite to the first main surface, and a recess provided at the second main surface; a first fluorescent material layer provided in the recess; a light emitting element provided at the first fluorescent material layer on the second main surface side; and a second fluorescent material layer provided at the second main surface.

Abstract: A remote phosphor package according to the present invention includes a green emitting quantum dot material and a Mn4+ doped phosphor of formula I, dispersed in a host matrix wherein A is Li, Na, K, Rb, Cs, or combinations thereof; M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Y, La, Nb, Ta, Bi, Gd, or combinations thereof; x is an absolute value of a charge of the [MFy] ion; and y is 5, 6 or 7.

Abstract: A method of manufacturing a light emitting module according to the present disclosure includes: preparing a light guide plate that comprises a first main surface serving as a light-emitting surface and a second main surface opposite to the first main surface; respectively providing light emitting elements on the second main surface so as to correspond to each of a plurality of optically functional portions provided on the first main surface of the light guide plate; and forming wires electrically connecting the plurality of light emitting elements.

Abstract: Provided is a film for an LED backlight, which can enhance the waveguide efficiency of a light guide plate in a sidelight-type planar backlight. The film for an LED backlight of the present invention includes: a low-refractive index layer; and a first pressure-sensitive adhesive layer arranged on at least one side of the low-refractive index layer, wherein the low-refractive index layer has a refractive index of 1.25 or less. In one embodiment, the low-refractive index layer is configured to be a porous body having voids. In one embodiment, the low-refractive index layer has a void ratio of 35 vol % or more.

Abstract: An emblem device includes an air bag cover, a substrate mounted inside the air bag cover, a light source mounted on the substrate and configured to emit light, a light guide plate mounted outside the air bag cover and configured to diffuse the light emitted from the light source, and an emblem located in front of the light guide plate and configured to cover a part of the light guide plate. The light emitted from the light guide plate is emitted in front of the emblem through a space formed between the air bag cover and the emblem.

Abstract: Accelerating photonic and opto-electronic technologies requires breaking current limits of modern chip-scale photonic devices. While electronics and computer technologies have benefited from “Moore's Law” scaling, photonic technologies are conventionally limited in scale by the wavelength of light. Recent sub-wavelength optical devices use nanostructures and plasmonic devices but still face fundamental performance limitations arising from metal-induced optical losses and resonance-induced narrow optical bandwidths. The present disclosure instead confines and guides light at deeply sub-wavelength dimensions while preserving low-loss and broadband operation. The wave nature of light is used while employing metal-free (all-dielectric) nanostructure geometries which effectively “pinch” light into ultra-small active volumes, for potentially about 100-1000× reduction in energy consumption of active photonic components such as phase-shifters.

Abstract: A photonics sensing system includes, in part, first and second multipath integrated optical networks, an optical radiator, and an optical receiver. The first multipath integrated optical network includes, in part, N optical delay elements each supplying one of N delayed optical signals of a received optical pulse, N optical modules each supplying a portion of a different one of the N delayed optical signals, and an optical combiner adapted to combine the N delayed portions to generate a modulated optical signal. The smallest of the N delays is smaller than a width of the received optical pulse. The optical radiator is adapted to radiate the modulated optical signal. The optical receiver is adapted to receive a reflection of the transmitted signal. The second multipath integrated optical network is adapted to demodulate the reflected signal received by the optical receiver.

Abstract: To provide an optical fiber cable having a protective structure of an optical fiber connecting part that allows easy fabrication of a protective structure part having a decreased diameter without use of a metal rod and a heat-shrinkable tube, and a method for manufacturing the same.

Abstract: A switch module includes a switch integrated circuit (IC), a silicon photonics chips, and an interface having removably coupled first side and second side. The first side includes a lens array optically coupled to a SiP chip and the second side includes a connector having a plurality of planar lightwave circuits (PLCs) optically coupled to another lens array.

Abstract: The present disclosure relates to a converter including an elongate sleeve having a first and an opposite second end. The converter also includes first and second multi-fiber connectors respectively mounted at the first and second ends.

Abstract: An optical connector includes multiple optical subconnectors, wherein each optical subconnector comprises a subconnector housing and one or more optical cable assemblies. The optical connector has two or more housing components, including at least a first housing component and a second housing component. Control of x, y, and z translation of the multiple optical subconnectors is distributed between the first and second housing components such that each housing component controls movement of the optical subconnectors along at least one but not all of the x, y, and z axes.

Abstract: The invention is directed to a connector assembly (1) comprising a first connector part (2) which is interconnectable to a second connector part (3). The first connector part (2) comprises a ferrule (13) which is encompassed by a shutter frame (17) and a thereto attached shutter (16). The shutter (16) is arranged movable with respect to the ferrule (13) in a first direction (x) between a closed position, in which the shutter (16) encompasses a connection face (37) of the ferrule (13), and an open position, in which the connection face (37) is set free from the shutter (16). The shutter frame (17) and/or the shutter (16) comprises at least one locating surface (36) which during mating interacts with the second connector part (3) such that the shutter (16) is displaced relative to the ferrule (13) from the closed to the open position.

Abstract: The present disclosure relates to using a coating to protect a portion of an optical fiber that is intended to buckle within a fiber optic connector. The fiber optic connector can include a bare fiber optical connector.