Abstract: A trajectory tracking system includes a set of dynamic models, a trajectory database, a trajectory handler, a parameter extractor and a classifier. There is one dynamic model per expected obstacle type and it models an expected trajectory of a point of normal incidence (PNI) of the expected obstacle. The trajectory database stores trajectories for a current set of obstacles being tracked. The trajectory handler at least associates incoming detections to existing trajectories and to update the existing trajectories. The parameter extractor periodically extracts parameters from the trajectories and the classifier classifies obstacles associated with the trajectories at least based on the parameters of the trajectories and on associated the dynamic models for the trajectories.

Abstract: According to one aspect, there is provided a wireless radio module comprising a millimeter wave wireless communication transceiver configured to output radar signals for physiological measurement, a millimeter wave antenna array connected to the millimeter wave wireless communication transceiver and configured to transmit the radar signals and to receive reflected radar signals, and a processing unit configured to analyze the received reflected radar signals to determine changes in a spectrum reflecting at least one of heart rate or respiration.

Abstract: Disclosed herein are techniques for measuring a reference beam and a corresponding returned beam from a target in a measurement system using a single sensor array. The system is configured such that the location of the reference beam is space apart from the location of the returned beam on the sensor array. A first set of sensor elements on the sensor array corresponding to the reference beam is dynamically activated based on a laser beam scanning control signal. The detection signal from the first set of sensor elements is used to determine a location and/or a pattern of the reference beam, which are then used to estimate a location and/or a pattern of the corresponding returned beam on the same sensor array and dynamically select and activate a second set of sensor elements on the sensor array based on the estimated location and/or pattern of the corresponding returned beam.

Abstract: An illustrative example device for controlling a direction of radiation includes a source of at least one beam of radiation. A plurality of optical components in a pathway of the at least one beam of radiation establish a first direction of the at least one beam of radiation. The plurality of optical components includes at least one adjustable optical component that includes at least one portion that is moveable relative to the source. A positional feedback feature on a portion of at least one of the optical components deflects at least some of the at least one beam of radiation in a second direction that is different than the first direction. A detector is situated to detect at least some of the deflected radiation and provides an output indicative of the first direction.

Abstract: A scanning device generally produces an image having a uniform resolution throughout a target region. To improve radar scanning/lidar scanning, an efficient scan approach to enable a radar device/lidar device to adoptively perform a scan of a target region based on interested regions and/or an adjustable resolution. The apparatus may be a scanning device for scanning. The apparatus performs a first scan over a target region to obtain a plurality of first scan samples at a plurality of locations within the target region. The apparatus generates a saliency map of the target region based on signal intensities of the plurality of first scan samples. The apparatus determines a salient region within the target region based on the saliency map. The apparatus performs at least one second scan over the salient region to obtain at least one second scan sample in the salient region.

Abstract: A detection method implementing an FMCW waveform is provided, the emitted waveform is formed of a recurring pattern of given period Tr covering an emission frequency band of given width B, each pattern being divided into a given number P of sub-patterns of duration Tr/P covering an excursion frequency band ?F=B/P, the sub-patterns being mutually spaced by a frequency interval equal to ?F.

Abstract: A proximity sensor measures the distance of a target and a method operates the proximity sensor. The proximity sensor emits a transmission signal as a free-field transmission wave, which is reflected at the target and as a free-field reflection signal is received by the proximity sensor as a reflection signal, wherein the determining of the distance is provided from the phasing of the reflection signal in relation to the phasing of the transmission signal. The proximity sensor shifts the phasing of the transmission signal chronologically.

Abstract: Disclosed is a Doppler measurement method comprising: generating a first function defined by reception signals in two consecutive subcarriers for a specific OFDM symbol; generating a second function defined on the basis of the signs and sizes of a real part and an imaginary part of the first function; repeatedly performing a process of generating the first function and the second function for all of a set of OFDM symbols; and determining, as a Doppler value, the phase of a third function obtained by adding the results of repeatedly performing the process.

Abstract: The invention relates to a multi-functional compact antenna system having high broadband capability, comprising a radar reflector that comprises at least two bipolar radiating elements, the radiating elements being symmetrically arranged in a cross-wise manner at an angle of 90°+/?10° and being electrically connected to one another at least at their intersection. The invention provides for an omnidirectional antenna characteristic in the azimuth plane and allows to maximise the radiation in the elevation plane around the elevation angle close to zero degrees.

Abstract: A trailer-detection system includes a radar-sensor, a camera, and a controller. The radar-sensor is used to determine a range, and an azimuth-angle, of a radar-signal reflected by a feature of trailer towed by a host-vehicle. The camera is used to capture an image of the trailer. The controller is in communication with the radar-sensor and the camera. The controller is configured to determine a position in the image of a viewable-feature of the trailer, determine a trailer-width and a trailer-height of the trailer based on the position and a range and azimuth-angle to the viewable-feature indicated by the radar-sensor, and optionally determine the trailer-length based on the range and azimuth-angle of the radar-signal reflected by a hidden-feature.

Abstract: A method is provided for identification of large numbers of skiers in ski slopes, in order to provide them automatically with pictures and videos of themselves during skiing. The method uses pattern matching of their tracked movement derived from a phase array ultra-low C-SWAP (cost, size, weight, and power) radar system and also from self-tracking of the skiers by their own mobile phones GPS. The OPS may be combined with a phase array Doppler radar in K band.

Abstract: There are provided an azimuth Fourier transform unit that transforms a SAR image into components in a Doppler frequency band, a band cutting-out unit that cuts out sub-band components from the components in the Doppler frequency band, and an azimuth inverse Fourier transform unit that transforms the sub-band components into sub-images, respectively. An image reconstructing unit extracts, for each area irradiated with a beam, a pixel sequence corresponding to the irradiated area from each of the sub-images, and collects the plurality of extracted pixel sequences to construct images for video.

Abstract: An illumination device to be mounted on a vehicle, includes a light source; a sensor configured to acquire information outside the vehicle based on invisible light; and a cover including a first portion covering the light source and a second portion covering the sensor. The second portion has a lower visible light transmittance than the first portion.

Abstract: A sensor and a portable terminal comprising the same, according to an embodiment, comprise: a substrate; a light-emitting unit and a light-receiving unit, which are arranged on the substrate at a distance from each other; a cover unit arranged on the light-emitting unit and the light-receiving unit so as to face the substrate; a first optical guide lens unit arranged between the cover unit and the light-emitting unit so as to refract light, which has been emitted from the light-emitting unit and to transfer the same to the outside of the cover unit; and a second optical guide lens unit arranged between the cover unit and the light-receiving unit so as to transfer light from the outside of the cover unit to the light-receiving unit. In connection with a proximity/illuminance sensor, the sensing range related to a spaced object is expanded, thereby improving the sensing performance.

Abstract: A computer-implemented method includes receiving surveying data from a proximity barrier survey device. The proximity barrier survey device is mounted to a package. The package is located within a physical environment. The method includes generating a map based on the surveying data. The method includes tracking movement within the physical environment based on the map and the surveying data.

Abstract: The invention provides an illuminance measuring system, which comprises an illuminance measuring instrument which comprises a first communication unit and is moved by a moving vehicle, a position measuring means which comprises a second communication unit and is capable of measuring a three-dimensional position of the illuminance measuring instrument and a data collector which comprises a third communication unit and a storage unit for storing positional information data of a predetermined measuring point, wherein the data collector moves the moving vehicle to the measuring point based on a position of the illuminance measuring instrument as measured by the position measuring means and the positional information data, an illuminance is measured by the illuminance measuring instrument and a position of the illuminance measuring instrument at the time of illuminance measurement is measured by the position measuring means, and wherein the data collector obtains an illuminance measurement result from the illumina

Abstract: The disclosed embodiments include an apparatus and method of using a laser to scan the ground or a target from an airborne or ground-based platform. In certain embodiments, the apparatus and method produces a 3-D elevation model of the terrain. In some embodiments, the apparatus includes a pulsed laser, a receiver to detect and amplify the pulse after being reflected by objects on the ground (or the ground itself), and electronics which measures the time of flight of the optical pulse from which the slant range to the target is calculated. Technical advantages of the disclosed embodiments include avoiding blind zones to ensure that no laser shots are wasted. In certain embodiments for airborne applications, the apparatus may also be configured to maintain a constant swath width or constant spot spacing independent of aircraft altitude or ground terrain elevation.

Abstract: A system and method for identifying a person in a geographic area of interest, who shares the identity of friendly participants with a user if certain criteria are met. In one form, the identity of a participant in the area and meeting certain criteria is displayed to a user or other friendly participants. The identity is displayed to friendly participants on, for example, a GPS-equipped cell phone or head-mounted glasses. Other information can be shared among friendly participants, including social information, photographs, gender, status, and location.

Abstract: This provides methods and systems for V2X applications, such as forward collision warning, electronic emergency brake light, left turn assist, work zone warning, signal phase timing, and others, mainly relying on a GNSS positioning solution transmitted via the Dedicated Short-Range Communications (DSRC) to/from the roadside units and onboard units in other V2X-enabled vehicles. However, the positioning solution from a GNSS may be deteriorated by noise and/or bias due to various error sources, e.g., time delay, atmospheric effect, ephemeris effect, and multipath effect. This offers a novel quality filter that can detect noise and the onset of drift in GNSS signals by evaluating up to four metrics that compare the qualities of kinematic variables, speed, heading angle change, curvature, and lateral displacement, obtained directly or derived from GNSS and onboard vehicle sensors. This is used for autonomous cars and vehicle safety, with various examples/variations.

Abstract: The concepts, systems and methods described herein are directed towards real time carrier phase monitoring and platform attitude solutions on a moving platform. In an embodiment, highly accurate platform attitude and monitored carrier phases can be determined in a single step and use data screening, error bounds inflation and statistical tests to ensure both inputs and outputs of an attitude solution are self-consistent. The method includes determining a carrier phase error level for each of the satellite-receiver tracks, identifying the satellite-receiver tracks having the carrier phase error level greater than or equal to a carrier phase error threshold, generating an attitude correction using the received data from the one or more satellite-receiver tracks having the carrier phase error level less than the carrier phase error threshold and determining a convergence state of the attitude correction. The carrier phase monitoring may be activated or dis-activated based on the convergence level.

Abstract: A handheld GNSS device having a GNSS antenna, memory, and a display receives a first GNSS signal at the GNSS antenna and determines a first position of a point of interest based on the GNSS signal. The first position is stored in memory. A second GNSS signal is received at the GNSS antenna and a second position of the point of interest is determined based on the second GNSS signal. The second position is stored in memory. A third GNSS signal is received at the GNSS antenna and a third position of the point of interest is determined based on the third GNSS signal. The third position is stored in memory. A determination is made whether the first, second, and third positions meet a clustering criteria. In accordance with a determination that the first, second, and third positions meet the clustering criteria, a first cluster position is stored. The first cluster position is based on the first, second, and third positions.

Abstract: This invention relates to a sensor device consisting of long period gratings made of rare-earth doped double clad fiber, which is written by CO2 laser irradiation while the fiber is held static, for gamma dose measurement in the range of 150 Gy-2.5 kGy, extendable to 20 kGy, which measurements are real-time and can be from remote locations. The sensor device has high wavelength dip shift sensitivity of at least 2.8 nm/kGy, and its radiation-induced changes are near permanent. The gratings demonstrate negligible temperature sensitivity and the shifts recorded show negligible annealing at room temperature.

Abstract: An analysis system for an aviation radiation dose according to the present invention includes: a proton spectrum generator which calculates a galactic cosmic ray incident on the Earth's atmosphere and a proton spectrum corresponding to a solar proton event; a global radiation dose map producer which calculates particle transport based on the proton spectrum and produces a radiation dose map; a global radiation dose map converter which converts the radiation dose map produced based on a standard atmosphere into a radiation dose map corresponding to current atmosphere conditions in real time; and a database in which data necessary for operations of the proton spectrum generator, the global radiation dose map producer and the global radiation dose map converter is previously calculated and stored, thereby having an effect on estimating a radiation dose of another route if another piece of information about an arbitrary path and time is given besides a previous given path.

Abstract: An inspection system with radiation-induced false count mitigation includes a radiation count controller coupled to one or more radiation sensors positioned proximate to an illumination sensor oriented to detect illumination from a sample. The radiation count controller may identify a set of radiation detection events based on radiation signals received from the radiation sensors during operation of the illumination sensor. The inspection system may further include an inspection controller to identify a set of illumination detection events based on an illumination signal, identify one or more features on the sample based on the set of illumination detection events, receive the set of radiation detection events from the radiation count controller, compare the set of radiation detection events to the set of illumination detection events to identify a set of coincidence events, and refine the one or more identified features on the sample based on the set of coincidence events.

Abstract: There is provided an x-ray detector including a number of adjacent detector modules arranged in a configuration having central parts and peripheral parts. The x-ray detector is configured to have higher dose efficiency in the central parts and lower dose efficiency in the peripheral parts.

Abstract: A computer-implemented method for updating a physical properties model of a subsurface region in an iterative inversion of seismic data using a gradient of a cost function that compares the seismic data to model-simulated data, said method comprising: obtaining a contrast model of a subsurface physical parameter that is sensitive to data dynamics and a kinematic model of a subsurface physical parameter; determining a gradient of a cost function using the contrast model and the kinematic model, wherein the cost function compares seismic data to model-simulated data; updating the kinematic model using a search direction derived from the gradient; adapting the contrast model according to an update to the kinematic model performed in the updating step; iteratively repeating the determining, updating, and adapting steps until a predetermined stopping criteria is reached, and generating a subsurface image from a finally updated kinematic model; and using the subsurface image to prospect for hydrocarbons.

Abstract: A survey method includes generating a first amplitude modulation signal by amplitude-modulating a carrier wave repeating the same pattern at a predetermined cycle in each of a plurality of vibrators with a modulation signal whose cycle is 1/m times the predetermined period and is different for each of the vibrators, transmitting the seismic wave based on the first amplitude modulation signal, generating a second amplitude modulation signal in one or more receivers, the second amplitude modulation signal being identical to the first amplitude modulation signal generated by any one of the seismic vibrators, generating a reception signal in each of the one or more receivers by receiving a synthetic seismic wave in which the seismic waves generated by the seismic vibrators are synthesized, calculating a correlation value between the reception signal and the second amplitude modulation signal, and analyzing characteristics of the medium on the basis of the correlation value.

Abstract: System and method for calculating a pre-plot for a marine seismic acquisition system. The method includes receiving as input a first number of autonomous underwater vehicles (AUVs) and a second number of source vessels; receiving a geometry of an area to be surveyed; receiving a set of naturally different regions and/or humanly set targets for the area to be surveyed; calculating a first sailing path for an AUV of the first number of AUVs; calculating a second sailing path for a source vessel of the second number of source vessels, based on the set of naturally different regions and/or humanly set targets; and entering the pre-plot into a navigation system of the AUV and the source vessel so that the AUV and source vessel dynamically change an offset distance between them, while sailing during a seismic survey, based on the naturally different regions and/or humanly set targets.

Abstract: The present disclosure is directed to loading a helical conveyor for underwater seismic exploration. The system includes a case and a first conveyor having a helix structure provided within the case to support one or more OBS units. The case can include a first opening at a first end of the first conveyor and a second opening at a second end of the first conveyor. The system can include a base to receive at least a portion of the case. The system can include a second conveyor positioned external to the case that can move an OBS unit into the first opening at the first end of the first conveyor. The first conveyor can receive the OBS unit and direct the OBS unit towards the second opening at the second end of the first conveyor.

Abstract: The present disclosure relates generally to expandable microcapsules and their utilization for acoustic imaging within a geological formation. The present disclosure further relates to expandable microcapsules with a multicomponent core and disclosure to practical utilization of multicomponent cores for controlling the expansion properties (e.g., temperature and pressure of expansion, expansion volume ratio, and shell thickness) of the resulting microbubbles.

Abstract: A downhole acoustic tool and method of use are provided. The acoustic tool includes an acoustic tool body. In addition, a transmitter section located along the acoustic tool body, including four or more transmitters to be driven so as to excite multi-mode waveforms. The acoustic tool further includes an array receiver section located along the acoustic tool body, containing a receiver sub-section comprising four or more receivers axially aligned with the four or more transmitters and spaced axially apart from the transmitter section. The acoustic tool also includes a processor configured to drive the transmitter section to excite multi-mode waveforms and to extract the multi-mode waveforms detected by the receiver section for interpretation of formation properties. A method for measuring a formation using the described acoustic tool is also provided.

Abstract: A method for processing sonic data acquired with a downhole sonic tool is provided. The method comprises detecting coherent noise based on a plurality of waveforms obtained from one or more receivers issued by one or more transmitters. The plurality of waveforms correspond to propagating acoustic waves in a formation. In addition, the method comprises building a slowness filter for removing the coherent noise, and applying the slowness filter to the plurality of waveforms.

Abstract: An electromagnetic well logging tool for a wireline logging process, includes a shaft, a transmitter coil mounted on the shaft and configured to generate primary magnetic fields for propagation into a well formation, upon excitation by a first current, a receiver coil mounted on the shaft at a predefined distance from the transmitter coil and configured to receive secondary magnetic fields generated from the well formation, and a bucking coil mounted on the shaft in a concentric arrangement with the receiver coil, wherein the bucking coil is configured to generate magnetic fields at the receiver coil upon excitation by a second current, for cancelling the magnetic fields generated at the receiver coil due to direct coupling between the transmitter and receiver coils.

Abstract: A resistivity measurement while drilling (MWD) device, including: a transmitting module arranged on an outer surface of a drill collar, for generating an induced current between the drill collar and surrounding formation by inductive coupling; a receiving electrode group including at least two electrodes, for receiving a measured current that reaches the electrode from the induced current through corresponding formation, two electrodes in the receiving electrode group being multiplexing electrodes; a resistivity calculation module configured to be connected to all or a part of the electrodes in the receiving electrode group in a measurement mode of the resistivity MWD device, to calculate the measured current received by a corresponding electrode and obtain resistivity of formation corresponding to the corresponding electrode; and a data transmission module configured to be connected to the multiplexing electrodes in a transmission mode of the resistivity MWD device, for transmitting calculated resistivity to

Abstract: A 3Helium gas counter comprising a container, a gas tube within the container, and a mixture of 3Helium and Xenon or a mixture of 3Helium and Krypton. A method of making a 3Helium gas counter comprising providing a container, placing a gas tube within the container, and depositing a mixture of 3Helium and Xenon or a mixture of 3Helium and Krypton into the gas tube.

Abstract: A first set of radiation detectors may be disposable on the a drill string, wherein the first set of radiation detectors are capable of detecting gamma radiation and neutron radiation; and a combined chemical source spaced from the first set of radiation detectors, wherein the combined chemical source comprises a gamma radiation emitting material and a neutron radiation emitting material. The first set of radiation detectors and combined chemical source may be used in methods for logging a wellbore.

Abstract: A signal method may include obtaining a first set of signal measurements, processing the first set of signal measurements into a phase reference obtaining a second set of signal measurements, the second set of signal measurements varying as a function of the phase reference, detecting an item of interest using the second set of signal measurements and the phase reference, and using the item of interest.

Abstract: Apparatus determines whether a stored object is a wafer alone or a frame unit formed by uniting the wafer and a ring frame. The apparatus includes first and second detecting units, the second detecting unit being stored more shallowly than the first detecting unit. The apparatus determines whether light transmitted by the first detecting unit is blocked by the object and does not reach a light receiving portion of the first detecting unit. When light transmitted from the second detecting unit is blocked by the object and does not reach a light receiving portion of the second detecting unit, the apparatus determines that the object is the frame unit, whereas when the light transmitted from the second detecting unit is not blocked by the object and reaches the light receiving portion of the second detecting unit, the apparatus determines that the object is the wafer.

Abstract: A method for scanning an individual with a security device includes providing a scanner, engaging the scanner in a first scanning mode to produce an initial scan of the individual with a controller, producing an initial representation based on the initial scan, determining a property of a second scanning mode based on information from the initial representation, and engaging the scanner in the second scanning mode to produce a second scan of the individual.

Abstract: The present invention relates to a computer-implemented method of providing a landslide hazard assessment, including: inputting a region from which to retrieve geographic information from a database or from a user in real-time, using an input device of a computer system; retrieving geographic information from the database, on the region; retrieving satellite-based remote sensing data from the external database in real-time or near real-time from the region, the external database being accessed by the computer system over the internet; creating a susceptibility map which is divided into a plurality of categories that represent relative susceptibility to landslides; showing the plurality of categories on the susceptibility map on a display of the computer system, using a defining characteristic; comparing a current daily rainfall accumulation from the external database to a daily rainfall threshold; and issuing a moderate- or high-hazard level landslide nowcast, depending on a result of the comparison.

Abstract: A wind forecast prediction apparatus includes an historical forecast patterns module configured to generate at least one historical wind forecast pattern and determine a deviation magnitude and a probability of occurrence of the at least one historical wind forecast pattern based on at least one actual wind value; a current wind forecast module; and a wind forecast prediction controller connected to the historical forecast patterns module and current wind forecast module, the wind forecast prediction controller is configured to generate a current wind forecast pattern based on current wind data from the current wind forecast module; and determine a matching historical wind forecast pattern from the at least one historical wind forecast pattern that matches the current wind forecast pattern, where the deviation magnitude and the probability of occurrence of the matching historical wind forecast pattern are combined with the current wind forecast pattern to generate a predicted wind forecast.

Abstract: An aspect receiving a new weather forecast. A temporally coherent analog modeling process is performed to identify a historical weather forecast that matches the new weather forecast. The new weather forecast is updated based on historical weather observations at points in time in the historical weather forecast. The updating includes: shifting a point in time in the historical weather forecast based on a factor determined by a previously executed dynamic time warping (DTW) of the historical weather forecast and the historical weather observations; and modifying the new weather forecast based on the historical weather observations at the shifted point in time. The updated new weather forecast is output.

Abstract: A metamaterial structure may include a first nanoparticle and a second nanoparticle containing a different material from the first nanoparticle. The first and second nanoparticles may be provided to be adjacent to each other and to be in an electrically-coupled state.

Abstract: To provide an antireflection film that is excellent in color uniformity while suppressing the reflectance.

Abstract: A lens coating apparatus is provided. The apparatus includes a mechanical arm configured to receive and maintain lenses in a desired orientation, a loading station configured to receive and maintain the lenses within the enclosed area, and a combined washing and drying station including a spraying mechanism that directs an upward spray toward a bottom surface of the lens, and blowing devices configured to direct air toward the lens after the lens has been washed. The coating apparatus includes a coating station where liquid coating is sprayed toward the bottom surface of the lens and a curing station where the coated lens is exposed to the UV energy radiation. A programmable controller controls the mechanical arm to collect the lens from the loading station without operator intervention, and move along a linear track between the loading station and the combined washing and drying, coating and curing stations.

Abstract: A micro lens array substrate includes a substrate including a plurality of concave portions arranged in a first direction and a second direction intersecting the first direction on one surface of the substrate, and a lens layer having a different refractive index from the substrate. The lens layer is formed on the one surface of the substrate to fill in the plurality of concave portions. The plurality of concave portions is continuous in at least one of the first direction and the second direction and is arranged to have a discontinuous part in the lens layer between two adjacent concave portions in a third direction intersecting the first and second directions. A first depth of a center of one concave portion from the discontinuous part is greater than a second depth of the discontinuous part from a surface of the lens layer.

Abstract: An optical sheet (1) includes a pinhole mask including a plurality of pinholes and a microlens array including a plurality of microlenses. Positions and sizes of the plurality of pinholes and the plurality of microlenses allow light emitted from the sub-pixels of all kinds to enter a specific pinhole and be diffracted by the specific pinhole, thereby allowing each thus-diffracted light outputted from the specific pinhole to enter a specific microlens.

Abstract: IR emission devices comprising an array of polaritonic IR emitters arranged on a substrate, where the emitters are coupled to a heater configured to provide heat to one or more of the emitters. When the emitters are heated, they produce an infrared emission that can be polarized and whose spectral emission range, emission wavelength, and/or emission linewidth can be tuned by the polaritonic material used to form the elements of the array and/or by the size and/or shape of the emitters. The IR emission can be modulated by the induction of a strain into a ferroelectric, a change in the crystalline phase of a phase change material and/or by quickly applying and dissipating heat applied to the polaritonic nanostructure. The IR emission can be designed to be hidden in the thermal background so that it can be observed only under the appropriate filtering and/or demodulation conditions.

Abstract: The present disclosure is directed to systems for tuning nanocube plasmonic resonators and methods for forming tunable plasmonic resonators. A tunable plasmonic resonator system can include a substrate and a nanostructure positioned on a surface of the substrate. The substrate can include a semiconductor material having a carrier density distribution. A junction can be formed between the nanostructure and the substrate forming a Schottky junction. Changing the carrier density distribution of the semiconductor material can change a plasmonic response of the plasmonic resonator.

Abstract: An optical assembly includes a transparent substrate having a first major surface and a second major surface. The transparent substrate includes one or more damage layers disposed between a first non-damage layer and a second non-damage layer. Elongated laser-induced damage tracks are disposed within the damaged layer(s) to form at least one area pattern so that light directed toward the transparent substrate at an angle that exceeds a predetermined viewing angle (?) is scattered by the plurality of laser-induced damage tracks. Alternatively, if light is directed toward the transparent substrate at an angle that is less than the predetermined viewing angle (?), it is transmitted by the transparent substrate.