Abstract: Systems and devices incorporating radiation detection, and techniques and materials for improved radiation detection are provided that involve a nano-scintillator exhibiting a linear luminescent emission response to stimulating electromagnetic radiation. The nano-scintillator can include at least one nanocrystal comprising a rare earth element, a lanthanide dopant, and a spectator dopant, wherein the nanocrystal exhibits a linear luminescent emission response to stimulating electromagnetic radiation of wavelengths less than 100 nm. As one example, the nanocrystal is [Y2-x03; Eux, Liy], where x is 0.05 to 0.1 and y is 0.1 to 0.16, and has an average nanoparticle size of 40 to 70 nm. These nanocrystals can be fabricated through a glycine combustion method.

Abstract: A computed tomography (CT) detector apparatus includes a plurality of detectors arranged in a ring, each detector being arranged inside a Faraday cage having a plurality of voltage-biased side-electrodes arranged on a side surface of the Faraday cage. The detectors include photon-counting detectors (PCDs). A voltage applied to the voltage-biased side-electrodes decreases from the anode side of the PCD to the cathode side of the PCD.

Abstract: An arrangement for detecting neutrons. The arrangement includes a first detector including helium that includes at least some Helium-3. The arrangement includes a second detector including helium that includes at least some Helium-4. The amount of all helium of the second detector is the same as the amount of all helium in the first detector. An associated method for providing the arrangement.

Abstract: This disclosure is directed to devices, integrated circuits, and methods for sensing radiation. In one example, a device includes an oscillator, configured to deliver a signal via an output at intervals defined by an oscillation frequency, and a counter, connected to the output of the oscillator and configured to count a number of times the comparator delivers the output signal. The oscillator includes a radiation-sensitive cell that applies a resistance. The resistance of the radiation-sensitive cell is configured to vary in response to incident radiation, wherein the oscillation frequency varies based at least in part on the resistance of the radiation-sensitive cell.

Abstract: A technique includes towing at least one seismic source in connection with a survey of a structure; and operating the seismic source(s) to fire shots, where each shot is associated with a frequency sweep. The technique includes varying phases of the frequency sweeps from shot to shot according to a predetermined phase sequence to allow noise in an energy sensed by seismic sensors to be attenuated.

Abstract: Embodiments relate to marine acoustic vibrators that incorporate one or more piston plates that act on the surrounding water to produce acoustic energy. An example marine acoustic vibratory may comprise: a containment housing; a piston plate; a fixture coupled to the containment housing; a spring element coupled to the piston plate and the fixture; and a driver coupled to the piston plate and the fixture and configured to move the piston plate back and forth.

Abstract: A technique includes designing a streamer, which includes a cable and seismic sensors based at least in part on a relationship between vibration noise and a bending stiffness of the cable.

Abstract: A system and method is provided for performing image-guided fault extraction from a fault-enhanced seismic image. The system divides three-dimensional fault-enhanced seismic images into a series of two-dimensional seismic image slices that can be selectively displayed and analyzed for fault surfaces. The system allows a user to select two or more fault surface points in a displayed image slice and identifies a fault path between the first fault surface point and the second fault surface that corresponds to a calculated at least cost path.

Abstract: Methods, systems, and devices for conducting a seismic survey. The system includes at least one seismic sensor configured to supply a signal responsive to reflections of acoustic energy from an earth surface; and at least one processor configured to: mitigate sensor offset from a sequence of samples representative of the signal by filtering the sequence of samples using a symmetrical-in-time finite impulse response (FIR) filter. The FIR filter may approximate a sinc-in-frequency filter. The at least one processor may be configured to process the sequence of samples using a plurality of filter stages that are rectangular in time. The length of one filter stage of the plurality of filter stages may be different than the length of another filter stage of the plurality of filter stages.

Abstract: Controller and method for determining a driving signal of a vibro-acoustic source element that is configured to generate acoustic waves in water. The method includes estimating at least one physical constraint of the vibro-acoustic source element; modeling a ghost function determined by a surface of the water; setting a target energy spectrum density to be emitted by the vibro-acoustic source element during the driving signal; and determining the driving signal in a controller based on at least one physical constraint, the ghost function, and the target energy spectrum density.

Abstract: Disclosed are a method and an apparatus for decoding a signal sent from a measurement-while-drilling tool. In order to decode the signal, a decoder implementation that is communicative according to a decoder implementation protocol and that is configured to decode the signal into a decoded signal is instantiated. The decoder implementation protocol is then conformed to a transmission protocol. The signal is sent to the decoder implementation according to the transmission protocol. Because the decoder implementation protocol has been conformed to the transmission protocol, the decoder implementation can receive the signal and can decode it. One way in which the decoder implementation protocol can be conformed to the transmission protocol is through the use of a translation layer between the module that sends the signal to be decoded and the decoder implementation.

Abstract: This present disclosure provides a sensing cable of parallel spiral transmission line structure for distributed sensing and measuring of rock-soil mass deformation. A circular cross-section of a silicone strip is tightly wounded by two mutually-insulated wires. The two mutually-insulated wires form the spiral cable. The two mutually-insulated wires are wrapped around and covered by a silicone shroud. They constitute a sensing cable. A termination matching impedance is connected to one end of each of the two mutually-insulated wires. A time domain reflectometry measurement instrument is connected to the other end of the two mutually-insulated wires. The present disclosure implements a distributed positioning and measurement of rock-soil mass deformation.

Abstract: A metal detection device includes a metal detection coil arranged in a metal detection area, wherein the metal detection coil is excited, and an electromagnetic wave radiated from the metal detection coil detects whether metal exists in the metal detection area. An oscillation circuit generates a sinusoidal oscillating current having a single fundamental frequency and supplies the oscillating current to the metal detection coil to excite the coil. A harmonic level detection circuit detects a harmonic component of the fundamental frequency component of the oscillating current and generates a detection signal. A comparison circuit compares a signal level of the detection signal and a pre-set reference value. A processing circuit determines whether metal exists in the metal detection area based on a comparison result. When determining that metal exists in the metal detection area, the processing circuit drives a notification unit to issue a notification indicating detection of metal.

Abstract: A system for synchronizing instruments in a drill pipe to detect formation characteristics comprises at least one first transmitter for transmitting a first signal, at least one first receiver for receiving a second signal having information based on the first signal, at least one acoustic transmitter for transmitting an acoustic signal, and at least one acoustic sensor electrically connected to one of the at least one first transmitter and the at least one first receiver, the at least one acoustic sensor for sensing the acoustic signal for synchronizing the at least one first transmitter and the at least one first receiver.

Abstract: A method for making downhole electromagnetic logging while drilling measurements includes rotating an electromagnetic logging while drilling tool in a subterranean wellbore. The logging tool includes a plurality of transmitter antennas and a plurality of receiver antennas symmetrically spaced along a logging while drilling tool body, the plurality of transmitter antennas including at least one axial transmitter antenna and at least one transverse transmitter antenna. The plurality of receiver antennas includes at least one axial receiver antenna and at least one transverse receiver antenna. The receiver antennas are used to acquire electromagnetic voltage measurements while rotating. The voltage measurements are processed to compute harmonic voltage coefficients, selected ratios of which are processed to compute gain compensated symmetrized and anti-symmetrized quantities and angles.

Abstract: The present application discloses an X-ray scanner having an X-ray source arranged to emit X-rays from source points through an imaging volume. The scanner may further include an array of X-ray detectors which may be arranged around the imaging volume and may be arranged to output detector signals in response to the detection of X-rays. The scanner may further include a conveyor arranged to convey an object through the imaging volume in a scan direction, and may also include at least one processor arranged to process the detector signals to produce an image data set defining an image of the object. The image may have a resolution in the scan direction that is at least 90% as high as in one direction, and in some cases two directions, orthogonal to the scan direction.

Abstract: A method of detecting an overall dimension of a plate-shaped workpiece to be processed on a processing machine by a contactless-acting sensor includes moving the workpiece by a motion device of the processing machine in a predetermined direction until the sensor detects a first workpiece edge by a first change of state, detecting a first position of the workpiece where the first change of state happens by an evaluation device connected to the sensor, moving the workpiece by the motion device in a direction toward a second workpiece edge until the sensor detects the second workpiece edge by a second change of state, detecting a second position of the workpiece where the second change of state happens by the evaluation device, and determining an overall dimension of the workpiece by a determination of a distance between the first position and the second position of the workpiece.

Abstract: A multiple optical axis photoelectric sensor capable of performing muting processing adapted to a plurality of kinds of workpieces having different heights without the need for complicated pre-setting according to the kinds of workpieces, is provided. The multiple optical axis photoelectric sensor is provided with a light projecting device and a light receiving device, which forms a plurality of optical axes together with the light projecting device. In at least one portion of a detection area, which is set according to the optical axes, a muting area for nullifying the result of detection of blocked light is set up. A sensor system acquires a range of blocked light corresponding to the blocked optical axis during passage of a workpiece, and alters the muting area of the multiple optical axis photoelectric sensor from a first range to a second range.

Abstract: Systems and methods for analyzing an unknown geological sample are disclosed. The system may include at least two analytical subsystems, and each of the at least two analytical subsystems provides different information about the geological sample. The data sets from various analytic subsystems are combined for further analysis, and the system includes a chemometric calibration model that relates geological attributes from analytical data previously obtained from at least two analytical techniques. A prediction engine applies the chemometric calibration model to the combined analytical information from the geological sample to predict specific geological attributes in the unknown geological sample.

Abstract: A method of performing a fracture operation at a wellsite about a subterranean formation having a fracture network with natural fractures is provided. The wellsite is stimulated by injection of fluid into the fracture network. The method involves generating wellsite data including natural fracture parameters and obtaining measurements of microseismic events, modeling hydraulic fractures of the fracture network based on the wellsite data and defining a hydraulic fracture geometry of the hydraulic fractures, generating a stress field of the hydraulic fractures using a geomechanical model, determining shear failure parameters comprising a failure envelope and a stress state about the fracture network, determining a location of shear failure of the fracture network from the failure envelope and the stress state, and calibrating the hydraulic fracture geometry by comparing the modeled hydraulic fractures and the locations of shear failure against the measured microseismic events.

Abstract: Sensors for air flow, temperature, pressure, and humidity are integrated onto a single semiconductor die within a miniaturized Venturi chamber to provide a microelectronic semiconductor-based environmental multi-sensor module that includes an air flow meter. One or more such multi-sensor modules can be used as building blocks in dedicated application-specific integrated circuits (ASICs) for use in environmental control appliances that rely on measurements of air flow. Furthermore, the sensor module can be built on top of existing circuitry that can be used to process signals from the sensors. By integrating the Venturi chamber with accompanying environmental sensors, correction factors can be obtained and applied to compensate for temporal humidity fluctuations and spatial temperature variation using the Venturi apparatus.

Abstract: This film-forming composition includes, for example, a polymer, crosslinking agent and light-diffusing agent that contain a triazine ring-containing repeating unit structure such as that represented formula (17), and is able to provide cured films with good light diffusing properties. Furthermore, this film-forming composition, which includes the same polymer, crosslinking agent and fine inorganic particles having a cross-linkable functional group, is able to provide cured films with good high temperature and high humidity resistance.

Abstract: A method for manufacturing an optical display device comprising: after completing lamination of a preceding optical film sheet to one of opposite surfaces of a preceding panel component at the predetermined laminating position, unwinding the carrier film in a state where another surface thereof folded to inside at a tip-end configuring a head portion of a peeling member and the carrier film is passed around the peeling member, and backwardly feeding a leading end of the optical film sheet supported on the carrier film to a predetermined feeding position provided at upstream of the tip-end of the peeling member.

Abstract: An antiglare film that includes light-transmitting substrate and a diffusion layer, the diffusion layer having a surface roughness on a surface thereof and being formed on at least one side of the light-transmitting substrate, wherein the diffusion layer contains a cured product of a binder component and organic fine particles (A) dispersed in the cured product of the binder component, and the following expression is satisfied: |NA?nb|>|nA?nb|>0 where NA represents a refractive index of the organic fine particles (A) before the organic fine particles (A) are introduced into the diffusion layer, nA represents a refractive index of the organic fine particles (A) in the diffusion layer, and nb represents a refractive index in the cured product of the binder component.

Abstract: An optical element has a base material having a surface and a plurality of structures which are arranged on the surface of the base material at a fine pitch equal to or shorter than the wavelength of visible light and which each includes a convex or concave portion. The elastic modulus of the material forming the structures is 1 MPa or more and 1200 MPa or less, and the surface on which the structures are formed are hydrophilic.

Abstract: A functional sheet with protective films obtained by laminating protective sheets includes aromatic polycarbonate onto a functional layer that is a polyvinyl alcohol polarizing layer or a photocromic layer or any combination thereof and having the protective films adhere to the protective sheets. The protective films have at least two or three layers i.e., a base layer composed of a polypropylene that has a melting point higher than the glass transition temperature of an aromatic polycarbonate; an adhesive layer composed of a heat plastic polyolefin elastomer composed of a polyolefin that has a melting point from a temperature that is 15° C. lower than the glass transition temperature of the aromatic polycarbonate to a temperature that is lower than the glass transition temperature and a styrene-olefin-styrene co-poly-elastomer; and a middle layer composed of a polyolefin resin between the base layer and the adhesive layer.

Abstract: A display panel according to the present invention includes a first substrate and a second substrate which are arranged opposite to each other, and an outer surface of the second substrate includes a display region and a border region surrounding the display region. Wherein, the display panel further includes a plurality of light guides provided on the outer surface of the second substrate, and the light guides include first light guides, which are provided at edges of the display region so as to guide light emitted from the edges of the display region towards an upside of at least a part of the border region. Since the first light guides guide light emitted from the edges of the display region towards an upside of at least a part of the border region, display with a narrow border or even display without a border can be achieved.

Abstract: An infrared imaging system used for infrared rays of wavelength of 5 micrometers or greater, the system including, from the object side to the image side, an aperture, a lens made of synthetic resin and an imaging element, the object side surface of the lens being convex to the object side in the paraxial area, wherein F-number of the system is 1.4 or smaller.

Abstract: A forward viewing device allows a cyclist having a head down position to view a scene forward of a bicycle. The device includes a prism fixed to a support which is connected to the bicycle forward of the cyclist. An image of the scene is transmitted through a forward facing surface of the prism, reflected internally by at least two surfaces of the prism, and transmitted to the cyclist through a prism surface as an image which is not mirrored left to right or turned upside down. In an embodiment, multiple prisms are positioned with adjacent ends, to increase the horizontal field of view. In another embodiment, multiple prisms are offset vertically, to increase the vertical field of view. In another embodiment, the device has a single optical element and does not require alignment.

Abstract: This disclosure generally relates to retroreflective articles and methods of making such articles.

Abstract: An optical element (transmissive or reflective) includes a transmissive layer comprising two different optical media arranged among discrete volumes arranged along the layer. The discrete volumes are arranged to approximate a desired phase function (typically modulo 2?) and are smaller than an operational wavelength in order to provide a range of phase delays needed to adequately approximate the desired phase function.

Abstract: Provided are a colored composition which enables the formation of a pattern having excellent heat resistance and excellent solubility in solvents and has inhibited color migration; and a cured film, a color filter, a method for producing a color filter, a solid-state image sensor, and an image display device, each of which uses the colored composition. The colored composition includes a polymer anion having a repeating unit containing a weakly nucleophilic anionic structure, and a dye having a cationic structure, in which the weakly nucleophilic anionic structure represents an anionic structure produced by dissociating an organic acid having a lower pKa value than the pKa value of sulfuric acid.

Abstract: An object of the present invention is to provide a near-infrared-absorbing composition capable of forming a cured film having excellent heat resistance while maintaining strong near-infrared shielding properties when a cured film is produced. The near-infrared-absorbing composition of the present invention includes a copper complex obtained by reacting two or more kinds of sulfonic acids represented by General Formula (I) described below or salts thereof with a copper component and a solvent.

Abstract: A method of forming quantum rod (QR) films includes: forming a transmissive film on a substrate; forming a plurality of stripe-shaped slots on the transmissive film; forming a QR layer on an alignment film, the QR layer comprising curing adhesives, and QRs and electric field-sensing monomers doped in the curing adhesives; applying an electrical field on the QR layer, so that under the effect of the electric field, the electric field-sensing monomers drive the QRs aligning with the plurality of stripe-shaped slots; and curing the curing adhesive so to bind the QRs. The present invention also proposes a QR light-emitting display device having a QR film made by the above mention method. The alignment of the long axes of QRs would be improved. It would enhance the luminance of the light emitted from the light-emitting side of the QR film.

Abstract: A method of producing a roll of an optical film laminate strip including a polarizing film includes the steps of: forming a continuous web of optical film laminate including a polarizing film which consists of a polyvinyl alcohol type resin layer and has a thickness of 10 ?m or less, wherein the polarizing film is formed by performing an stretching sub-step of subjecting a laminate comprising a continuous web of thermoplastic resin substrate and a polyvinyl alcohol type resin layer formed on the substrate, to a uniaxial stretching in a lengthwise direction of the laminate based on 2-stage stretching consisting of preliminary in-air stretching and in-boric-acid-solution stretching; cutting the continuous web of optical film laminate along a direction parallel to the length direction to form at least one continuous web of laminate strip having a given width; and winding the continuous web of laminate strip having the given width into a roll.

Abstract: Electronic devices may be provided with displays that have polarizers. A polarizer may have a polymer layer that has a portion covered with a dichroic dye to form a polarized region and a portion that is free of dichroic dye to form an unpolarized region. The unpolarized region may be formed by masking the polymer layer during a dye coating process. Masks may be formed from polymers. The shape of the mask may define the shape of the unpolarized region. The mask may be left in place within the polarizer or may be removed from the polarizer during fabrication. Unpolarized regions may also be formed by light bleaching, chemical bleaching, and material removal techniques. Bleached areas may be chemically stabilized. A moisture barrier layer may be incorporated into the polarizer to help prevent the unpolarized region from reverting to a polarized state.

Abstract: A light source apparatus includes: a primary light source module including a primary light source configured to emit primary light; a light conversion module including a light conversion unit configured to convert optical properties of the primary light and to generate secondary light; a light guide path, arranged between the primary light source module and the light conversion module, configured to guide the primary light to the light conversion module from the primary light source module; a first connecting portion configured to connect detachably the light conversion module with the light guide path; and a second connecting portion configured to connect detachably the primary light source module with the light guide path.

Abstract: LED lighting devices are provided that include two optical waveguides and at least one LED in an intermediate region between end faces of the optical waveguides so that radiation from the LED is coupled into the optical waveguides through the end faces. A de-coupler is on outer circumferential surface regions of each of the two separate optical waveguides. The de-coupler reflects the radiation guided in the optical waveguides so that the radiation passes through the optical waveguides and is coupled out of the optical waveguides laterally. The intermediate region has a length that is selected so that a brightness difference, measured perpendicular to an axis of the optical waveguides in the center of the intermediate region, at a distance of 10 mm perpendicular to the axis of the optical waveguides is at most 25% based on a maximum value of brightness along the axis of the optical waveguides.

Abstract: An illumination device comprising: (i) a light diffusing optical fiber having a numerical aperture of NALDF, wherein said light diffusing optical fiber has an outer surface, two ends, and a core, the fiber comprising a region with a plurality of scattering structures within said core configured to scatter guided light via said scattering structures towards the outer surface providing scattering-induced attenuation greater than 50 dB/km at illumination wavelength, wherein said scatter guided light diffuses through said outer surface to provide illumination; (ii) a light source having a numerical aperture of NAS1, said light source being optically coupled to one end of said light diffusing optical fiber; NALDF?NAS1>0.05.

Abstract: The present invention discloses a display device and a backlight module. The display device includes a display panel and a backlight module. The display panel is used for displaying images and passing light rays. The backlight module includes a light source and a light source providing board. The light source providing board is used for providing first light rays and passing second light rays. The light source providing board includes a light ray input interface, a light ray providing unit, and a light ray transmittance channel. The present invention can make a viewer see an object behind the display device.

Abstract: A light guide panel, back light assembly and display apparatus are provided. According to an aspect of the inventive concept, there is provided the light guide panel which includes a top surface, a bottom surface, and four side surfaces, and one of the four side surfaces may be a light incident surface.

Abstract: A backlight assembly is provided. The backlight assembly includes a light source, a light guide plate, a light collimation unit, and a guide groove. The light guide plate faces the light source in a first direction. The light guide plate includes a first surface on which light emitted from the light source is incident on and a second surface through which the incident light is emitted. The light collimation unit protrudes from an upper surface of the light guide plate and faces the light source. The guide groove is formed in a lower surface of the light guide plate along the first surface of the light guide plate.

Abstract: A light-conducting apparatus includes a light source, a light-conducting member and a light-reflecting structure. The light-conducting member includes a ring-shaped portion, a light-receiving surface and a radially outwardly bulged portion. The ring-shaped portion extends continuously over an entire circumference of the ring-shaped portion in a circumferential direction of the ring-shaped portion. The light-receiving surface causes light from the light source to enter the light-conducting member through the light-receiving surface. The radially outwardly bulged portion is bulged radially outwardly from the ring-shaped portion and causes the light having entered the light-conducting member through the light-receiving surface to enter the ring-shaped portion in one direction in the circumferential direction of the ring-shaped portion.

Abstract: A light guide assembly, a backlight module and a liquid crystal display (LCD) are provided. The backlight module includes a back plate, light guide plate, an adhesive member and a light source. The light guide plate is disposed on the back plate and includes a first optical surface, a second optical surface and a light-incident surface. The first optical surface is opposite to the second optical surface. The light-incident surface connects the first optical surface and the second optical surface. The first optical surface or the second optical surface of the light guide plate is set with a recess. The adhesive member is disposed in the recess to adhere the light guide plate to the back plate. The light source is disposed on the back plate and emits light toward the light guide plate.

Abstract: A light emitting diode (LED) light fixture is described. The LED light fixture can include a wave guide having an aperture that traverses therethrough. The LED light fixture can also include at least one LED disposed adjacent to the aperture in the wave guide. The LED light fixture can further include a LED driver electrically coupled to the at least one LED. The LED light fixture can also include a heat sink thermally coupled to the at least one LED.

Abstract: Embodiments of the present invention disclose a reflective film, a backlight module comprising the reflective film and a display apparatus comprising the backlight module. A row of low-reflection dots are disposed on a side of a surface of the reflective film, and regions of the surface of the reflective film corresponding to the low-reflection dots have smaller reflectivity with respect to the incident light from an LED light strip disposed at a side of the row of the low-reflection dots than other regions of the surface of the reflective film with respect to the incident light from the LED light strip. The regions of the reflective film directly facing the LED are changed into low-reflection regions, in which the reflectivity is reduced. Therefore the alternate bright and dark phenomenon at light incident side is reduced or eliminated and display quality of the display apparatus is further improved.

Abstract: Methods and apparatus for providing one or more components for a display system, particularly for producing diffused light.

Abstract: A quantum dot backlight module includes: a reflector, a light guide plate disposed above the reflector, a plurality of dot units disposed on an upper surface of the light guide plate at intervals, and a quantum dot packaged in each of the plurality of dot units, and light emitting diodes disposed on a edge side of the light guide plate. According to the present invention, the quantum dot material can be used less, which is good for reducing the production cost. Besides, heat can be effectively radiated from the light emitting diodes. Wide color gamut is realized as well.

Abstract: An optical sheet, a backlight unit having the optical sheet, and a display device having the backlight unit are discussed. According to an embodiment, the optical sheet includes a base film; a high refractive index layer having a plurality of prism portions on the base film; and a low refractive index layer positioned on the high refractive index layer, and covering the plurality of prism portions and having a surface parallel to the base film, each of the prism portions including an incidence surface on which incident light is refracted and a reflective surface on which the refracted light is reflected, the incidence surface including a bent for refracting the incident light towards the reflective surface.

Abstract: A luminaire, in particular a downlight, comprises a light source and a reflector, the reflector having a light entrance end and a light exit end, the light entrance end comprising at least one light entrance aperture with an edge and the light exit end comprising a light exit aperture. A luminaire shade encompasses the reflector at least partially. A first portion of the light source light is emitted by the reflector through the light exit aperture and a second portion is emitted through the luminaire shade. The light source is an LED. The luminaire includes a light guide arranged near the light entrance aperture between the LED and light exit end so at least some LED light enters into the light guide, the light guide comprising a light-guiding area extending perpendicular to the longitudinal extension of the reflector at least partially beyond the edge of the light entrance aperture.