Abstract: Provided is a manufacturing method for a SiC device including: performing an ion implantation process of implanting ions in an epitaxial layer of a SiC epitaxial wafer that has the epitaxial layer; and performing an evaluation process of evaluating a defect of the SiC epitaxial wafer after the ion implantation process, in which the evaluation process includes a surface inspection process of inspecting a surface of the SiC epitaxial wafer, a PL inspection process of irradiating a region that includes the defect detected in the surface inspection to perform photoluminescence measurement after the surface inspection process, and a determination process of determining a degree of the defect from a surface defect image detected in the surface inspection and a PL defect image detected in the PL inspection process.

Abstract: A system and method for identification and suppression of time varying background objects is disclosed. A proposed surveillance security system includes an image analytics system and at least one surveillance camera. The image analytics system identifies objects within image data of a scene captured by the surveillance camera, and then analyzes the objects to determine whether each object is a foreground object or a dynamic background object. In examples, the image analytics system determines whether an object is a foreground object or a dynamic background object based upon movement and/or an appearance of the object. The surveillance security system does not send alerts to users of the system for objects determined to be dynamic background objects. When users request objects of interest, the dynamic background objects are also excluded from lists of objects sent in reply messages to the users.

Abstract: An automatic analysis apparatus includes a reaction vessel configured to contain a reaction liquid in which a measuring object and a reagent are mixed with each other, an irradiation unit configured to irradiate the reaction vessel with irradiation light as predetermined incident light polarization, a measurement unit configured to measure light emitted from the reaction vessel, and a processor configured to process a signal having a specific polarization component obtained from the measurement unit and to analyze the measuring object. The specific polarization component is determined based on the condition of the reaction liquid.

Abstract: An image processing apparatus includes a skin area detection unit configured to detect a skin area of an object person, a difference area detection unit configured to detect a difference area between the visible light image and the infrared light image, a correction target area detection unit configured to detect a correction target area of the object person based on the skin area detected by the skin area detection unit and the difference area detected by the difference area detection unit, and a correction unit configured to correct the correction target area in the visible light image.

Abstract: The present invention relates to a method of enrolling a fingerprint of a user's finger, by means of a fingerprint detection arrangement. In particular, the fingerprint detection arrangement comprises a fingerprint sensor and an optical sensor comprising a light emitting source and a light receiving device.

Abstract: The present invention relates generally to a slope spectroscopy standards and methods of making slope spectroscopy standards, specifically standards and methods of developing standards specifically for variable pathlength (slope) measurements.

Abstract: A photo-detecting apparatus includes a semiconductor substrate. A first germanium-based light absorption material is supported by the semiconductor substrate and configured to absorb a first optical signal having a first wavelength greater than 800 nm. A first metal line is electrically coupled to a first region of the first germanium-based light absorption material. A second metal line is electrically coupled to a second region of the first germanium-based light absorption material. The first region is un-doped or doped with a first type of dopants. The second region is doped with a second type of dopants. The first metal line is configured to control an amount of a first type of photo-generated carriers generated inside the first germanium-based light absorption material to be collected by the second region.

Abstract: Techniques and apparatus for producing sampled Optical Coherence Tomography (OCT) interference signals without aliasing, based on a swept-source OCT interference signal. An example apparatus comprises a k-clock circuit configured to selectively output a k-clock signal at any of a plurality of k-clock frequencies ranging from a minimum k-clock frequency to a maximum k-clock frequency, and an anti-aliasing filter configured to filter a swept-source OCT interference signal, to produce a filtered OCT interference signal, where the anti-aliasing filter has a cut-off frequency greater than one-half the minimum k-clock frequency but less than the minimum k-clock frequency. The apparatus further comprises an analog-to-digital (A/D) converter circuit configured to sample the filtered OCT interference signal at twice the k-clock frequency, to produce a sampled OCT interference signal.

Abstract: The present application relates to a terahertz transmitting antenna including a microstrip feed line, a substrate, at least two antenna switches, at least one conducting plate, an insulating layer and at least two antenna patches. The terahertz transmitting antenna is provided with at least two antenna switches and at least two corresponding antenna patches, which substantially increases a transmitting bandwidth and a corresponding transmitting power of the terahertz transmitting antenna. The terahertz transmitting antenna with the increased transmitting bandwidth and the increased transmitting power can be applied to a small sized terahertz spectral detection device to assist the transmitting source to transmit the signal in the terahertz band. The terahertz transmitting antenna adopting the multi-frequency switching technology can reduce an operation time of a spectral fingerprint recognition algorithm to rapid identify specific target substances.

Abstract: An inspection device includes a wearable camera attached to a worker that images an inspection object, and a laser pointer that indicates an imaging region of the wearable camera to the worker. The laser pointer is attached to the worker to emit a laser beam in a direction parallel to a line of sight of the wearable camera such that a relative distance between a light point of the laser beam and the imaging region of the wearable camera is constant and does not vary depending on a distance between the laser pointer and the workpiece.

Abstract: In a SiC substrate evaluation method, a bar-shaped stacking fault is observed by irradiating a surface of a SiC substrate before stacking an epitaxial layer with excitation light and extracting light having a wavelength range from equal to or greater than 405 nm and equal to or less than 445 nm among photoluminescence light beams emitted from the first surface.

Abstract: Methods for sorting haploid maize kernels in haploid induction crosses are provided. A method of sorting haploid kernels can include capturing near-infrared (NIR) spectra and applying a general multivariate statistical model to the acquired NIR spectra to discriminate haploid kernels from diploid-hybrid kernels mixed therein. NIR spectra can be collected on a single kernel using a high-throughput apparatus such that the amount of time required to analyze individual kernels can be significantly reduced in comparison to existing NIR technology and in comparison to traditional manual sorting.

Abstract: A fluid filtration system may include a fluid filter assembly that includes a filter element configured to filter a fluid and a sensor probe incorporated into the fluid filter assembly. The sensor probe may include a chemically reactive material sensitive to at least one property of the fluid and at least a portion of the sensor probe may be exposed to the fluid.

Abstract: An optical concentration measuring device capable of power saving and lifespan extension of a light source is provided, including a light source emitting an amount of light corresponding to a supplied power; a light detection part receiving at least a part of the light emitted by the light source and generating a signal corresponding an amount of received light as an output signal; a smoothing filter smoothing a signal based on the output signal; a signal change amount calculation part calculating a first and a second change amounts corresponding to a change amount between at least two selected acquisition values selected from acquisition values based on the output signal at current or past time; a light source control part controlling the power supplied to the light source based on the first change amount; and a filter control part controlling characteristics of the smoothing filter based on the second change amount.

Abstract: An efficient absorption spectroscopy system is provided. The spectroscopy system may be configured to measure solid, liquid or gaseous samples. Vacuum ultra-violet wavelengths may be utilized. Some of the disclosed techniques can be used for detecting the presence of trace concentrations of gaseous species. A preferable gas flow cell is disclosed. Some of the disclosed techniques may be used with a gas chromatography system so as to detect and identify species eluted from the column. Some of the disclosed techniques may be used in conjunction with an electrospray interface and a liquid chromatography system so as to detect and identify gas phase ions of macromolecules produced from solution. Some of the disclosed techniques may be used to characterize chemical reactions. Some of the disclosed techniques may be used in conjunction with an ultra short-path length sample cell to measure liquids.

Abstract: A reference signal having a known induced optical delay is used for phase stabilization of optical coherence tomography (OCT) interferograms, and for correcting sampling differences within OCT interferograms, in single mode and multimodal OCT systems. The reference signal can then be used to the measure time shift or sample clock period shifts induced in the interferogram signal by the OCT system. A corresponding OCT interferogram signal can then be corrected to remove the shift induced by the system based on the determination.

Abstract: An inspection method for optical components that can be implemented to conform to performance specification MIL-PRF-13830 in order to grade surface imperfections, in particular scratches and digs. A dark-field microscope obtains a digital image of the component, and this digital image is processed to determine scratch and dig numbers. For scratches, the number is obtained by dividing the total intensity of the scratch by the scratch length. For digs, the number is obtained by determining dig diameter or by dividing the dig's total intensity by its area. According to our extensive testing, this automated digital image processing approach appears to faithfully mimic the subjective impression that a scratch makes on an expert inspector who is applying the visibility test of MIL-PRF-13830.

Abstract: An imaging device including a condenser lens and an image sensor is provided. The image sensor is configured to sense light penetrating the condenser lens and includes a pixel matrix, an opaque layer, a plurality of microlenses and an infrared filter layer. The pixel matrix includes a plurality of infrared pixels, a plurality of first pixels and a plurality of second pixels. The opaque layer covers upon a first region of the first pixels and a second region of the second pixels, wherein the first region and the second region are mirror-symmetrically arranged in a first direction. The plurality of microlenses is arranged upon the pixel matrix. The infrared filter layer covers upon the infrared pixels.

Abstract: An objective optical system includes a convex secondary mirror configured to reflect a measurement light irradiated from an infrared microscope, a concave primary mirror configured to reflect the measurement light reflected by the secondary mirror, a prism to which the measurement light reflected by the primary mirror is irradiated, and a light shielding means provided on an optical path of the measurement light between the primary mirror and the prism to shield a part of the light beam of the measurement light.

Abstract: A line connector for a fluid and a ready-made medial line including the line connector. The line connector includes a connecting piece with a flow-through channel in the interior thereof and extending in a longitudinal direction of the connecting piece. The connecting piece has at each of its two ends a coupling section that is designed such that a flexible media line or a tubing or an aggregate can be connected to an aggregate connector. The flow-through channel is provided with an electrical heating unit. In the region of the flow-through channel, between the connecting sections, a circumferential enclosed receiving housing is formed on the coupling piece and in which an optical sensor unit is disposed for measuring characteristics of the fluid flowing in the flow-through channel. The ready-made media line includes the line connector and a tubular media line connected on one or both ends thereof.

Abstract: A system and method of non-intrusively measuring characteristics of a fluid in a substrate are provided. The fluid is located in a fluid channel in a substrate, and an electromagnetic radiation source emits an electromagnetic beam toward the fluid and the substrate such that a first part of the beam reflects off a first surface of the substrate and a second part of the beam travels through the fluid and reflects off a second surface of the substrate. A sensor detects the resulting interference pattern produced by the two parts of the beam. Changes in fringes of the interference pattern, such as shifting positions or intensities, relates to a change in the refractive index of the fluid. Since a change in refractive index relates to the density and pressure of the fluid, the changes in interference patterns can be used to discern changes in characteristics in the fluid such as pressure.

Abstract: Provided is an aperture-plate drive mechanism including an aperture-plate open-close mechanism and a rotation mechanism for rotating the open-close mechanism. The open-close mechanism includes: drive blocks 308 fixed to a pair of aperture plates 301; a linear motion guide 306 allowing the drive blocks to move along an axis; a feed screw 302 parallel to the axis, on which a pair of helical threads proceeding in opposite directions formed; nut members 305 each of which is provided in a manner to be engaged with one of the pair of helical threads and is prevented from rotating due to a rotation of the feed screw; an urging member 309 for pressing the drive blocks onto the nut members, respectively; and a distance adjustment member 310 placed between one drive block and the corresponding nut member, for adjusting the distance between them. With this mechanism, a discrepancy between the open-close center of the aperture plates from the rotation center can be cancelled even after the mechanism is assembled.

Abstract: A method of inspecting and determining characteristics of an aluminized coating of a hot stamped part is provided. The method includes removing a sample from the hot stamped part for Glow Discharge Optical Emission Spectrometry (GDOES), analyzing the sample using GDOES, and plotting constituent element weight percentages versus depth on a graph. The method further includes determining points on the graph where constituent elements intersect and where the points of intersection indicate the characteristics of the aluminized coating. The characteristics of the method include, by way of example, a total thickness of the aluminized coating, a thickness of an inter-diffusion layer (IDL), constituents of the aluminized coating, constituents of the hot stamped part, phase composition of the aluminized coating, surface oxidation, and weldability.

Abstract: Various apparatuses, circuits, systems, and methods for optical communication are disclosed. In some implementations, an apparatus includes a package substrate and f first interposer mounted on the package substrate. The apparatus also includes a logic circuit and an optical interface circuit connected to the logic circuit via the first interposer. One of the optical interface circuit or the logic circuit is mounted on the first interposer. The optical interface circuit includes a driver circuit configured to receive electronic data signals from the logic circuit. The optical interface circuit also includes an optical transmitter circuit coupled to the driver circuit and configured to output optical data signals encoding the electronic data signals.

Abstract: The present invention provides a liquid conductivity measurement cell comprising a chamber having an inlet, an outlet and four sensing pins of substantially equal length, said sensing pins being arranged within the chamber around an orbit, each sensing pin defining an electrode, each of said electrodes being switchable between two or more configurations of two sensing pins.

Abstract: A system includes an optical computing device having an optical multiplexer that receives a sample light generated by an optical interaction between a sample and an illumination light is provided. The system includes sensing elements that optically interact with the sample light to generate modified lights, and a detector that measures a property of the modified lights separately. Linear and nonlinear models for processing data collected with the above system to form high-resolution spectra are also provided. Methods for designing optimal optical multiplexers for optimal reconstruction of high-resolution spectra are also provided.

Abstract: An imaging sensor assembly includes at least one substrate including a plurality of substrate signal lines. The imaging sensor assembly also includes at least one imaging sensor package disposed on the at least one substrate, the at least one imaging sensor package including at least one imaging sensor disposed on at least one imaging sensor package substrate. The imaging sensor assembly also includes at least one receiver package disposed on the at least one substrate, the receiver package including at least one receiver integrated circuit disposed on at least one receiver package substrate. The imaging sensor assembly also includes at least one electrical interconnect operably coupled to the at least one imaging sensor package and the at least one receiver package. A plurality of data signals are transmitted between the at least one imaging sensor package and the at least one receiver package via the at least one electrical interconnect.

Abstract: The present disclosure includes methods and systems for generating modified digital images utilizing a neural network that includes a rendering layer. In particular, the disclosed systems and methods can train a neural network to decompose an input digital image into intrinsic physical properties (e.g., such as material, illumination, and shape). Moreover, the systems and methods can substitute one of the intrinsic physical properties for a target property (e.g., a modified material, illumination, or shape). The systems and methods can utilize a rendering layer trained to synthesize a digital image to generate a modified digital image based on the target property and the remaining (unsubstituted) intrinsic physical properties. Systems and methods can increase the accuracy of modified digital images by generating modified digital images that realistically reflect a confluence of intrinsic physical properties of an input digital image and target (i.e., modified) properties.

Abstract: Techniques for detecting physical conditions at a physical premises from collection of sensor information from plural sensors execute one or more unsupervised learning models to continually analyze the collected sensor information to produce operational states of sensor information, produce sequences of state transitions, detect during the continual analysis of sensor data that one or more of the sequences of state transitions is a drift sequence, correlate determined drift state sequence to a stored determined condition at the premises, and generate an alert based on the determined condition. Various uses are described for these techniques.

Abstract: An image processing sensor includes an image registering unit configured to register a non-defective product image, a defective product image, and a background image, a differential-image generating unit configured to generate a first differential image from the non-defective product image and the background image and generate a second differential image from the defective product image and the background image; a matching-degree calculating unit configured to calculate a matching degree indicating a degree of feature matching of the second differential image with respect to a model image corresponding to the first differential image, and a threshold calculating unit configured to calculate, on the basis of the matching degree, a threshold used in an operation mode.

Abstract: A LIDAR system is provided. The LIDAR system comprises at least one processor configured to: control at least one deflector to deflect light from a plurality of light sources along a plurality of outbound paths, towards a plurality of regions forming a field of view while the at least one deflector is in a particular instantaneous position; control the at least one deflector such that while the at least one deflector is in the particular instantaneous position, light reflections from the field of view are received on at least one common area of the at least one deflector; and receive from each of a plurality of detectors, at least one signal indicative of light reflections from the at least one common area while the at least one deflector is in the particular instantaneous position.

Abstract: A signal detection device according to one aspect of the present invention includes a receiver configured to receive a signal including at least a first signal component modulated by a first frequency and a second signal component modulated by a second frequency, and a detector configured to generate, using a base signal, a first reference signal to be used for detecting the first signal component and a second reference signal to be used for detecting the second signal component, perform lock-in detection on the signal received by the receiver using the first reference signal to obtain a first detection signal, perform lock-in detection on the signal received by the receiver using the second reference signal to obtain two second detection signals having different phases from each other, and change at least one of a frequency and a phase of each of the first and second reference signals to set one of the two second detection signals to zero.

Abstract: A method for optimizing values of n detection wavelengths of an optical gas sensor configured to detect n different gases is provided, including: a) calculating a value of a determinant of an absorptivity matrix ? whose coefficients represent spectral absorptivity of each of the n different gases at the n detection wavelengths, the calculating being repeated several times, each time modifying at least one of said n detection wavelengths so the values of said n detection wavelengths are comprised within a range of values for which the spectral absorptivity of at least one of the n different gases is non-zero; and b) determining the values of said n detection wavelengths for which the calculated value of the determinant of the absorptivity matrix ? corresponds to a maximum calculated value amongst a set of values calculated in step a).

Abstract: This food-article analysis device is provided with a light-reception/detection unit that receives near-infrared light reflected off of at least one measurement region of a measurement target and/or near-infrared light that has passed through at least one measurement region of said measurement target and generates a signal corresponding to the intensity of the received light, a computation unit that computes sectional nutrition information containing information regarding the caloric content of at least one measurement region and/or information regarding the components thereof on the basis of the signal supplied by the light-reception/detection unit and generates a distribution image by combining a plurality of pieces of sectional nutrition information relating to a plurality of measurement regions with position information for said measurement regions, and a display unit that displays the distribution image supplied by the computation unit.

Abstract: Single-shot transient optical signals are recorded in a time regime of picoseconds to nanosecond. An auxiliary pump beam is crossed through the signal to sample a diagonal ‘slice’ of space-time, analogous to a rolling shutter. The slice is then imaged onto an ordinary camera, where the recorded spatial trace is a direct representation of the time content of the signal. The pump samples the signal by optically exciting carriers that modify the refractive index in a conventional semiconductor wafer. Through use of birefringent retarders surrounding the wafer, the integrating response of the rapidly excited but persistent carriers is differentiated by probing with two polarization-encoded time-staggered signal replicas that are recombined to interfere destructively.

Abstract: A method and apparatus for non-invasive blood glucose measurement are disclosed. The methods and apparatus utilize exposing a biological object supplied with blood and capable of transmitting infrared radiation therethrough, to an incident beam of polarized infrared radiation with a given angular position of a polarization plane, determining an angular position of a polarization plane of the radiation transmitted through the biological object with a polarizer-analyzer, and measuring an angle shift between said angular positions of the polarization planes of the incident and transmitted radiation, and calculating a glucose concentration C. The methods and apparatus further utilize measuring the length and oscillations of a whisker connected to the polarizer-analyzer and to a rigid support so as to calculate the instantaneous positions of the polarizer-analyzer.

Abstract: A method of contactless detection of indications of psychoactive components in a liquid and an apparatus therefor, by emitting a substantially monochromatic light at least at two different wavelengths and detecting the reflection in a free surface of the liquid by a photo detector, analyzing an output signal from the photo detector to identify output parts caused by light emitted from the first and second emitters, respectively, and determining whether the liquid contains at least one psychoactive component.

Abstract: A solid-state laser system may include first and second solid-state laser units, a wavelength conversion system, an optical shutter, and a controller. The first solid-state laser unit and the second solid-state laser unit may output first pulsed laser light with a first wavelength and second pulsed laser light with a second wavelength, respectively. The controller may perform first control and second control. The first control may cause the first and second pulsed laser light to enter the wavelength conversion system at a substantially coincidental timing, thereby causing the wavelength conversion system to output third pulsed laser light with a third wavelength converted from the first wavelength and the second wavelength, and the second control may prevent the first and second pulsed laser light from entering the wavelength conversion system at the coincidental timing, thereby preventing the wavelength conversion system from outputting the third pulsed laser light.

Abstract: A method of detecting concentration of dipicolinic acid and terbium chloride in a chemical composition with a fluorometer, wherein the fluorometer comprises an excitation source for emitting electromagnetic radiation at one or more wavelengths, and a detector module for detecting fluorescence emitted by dipicolinic acid, emitting electromagnetic radiation from the excitation source at wavelengths that induce fluorescence in dipicolinic acid-terbium chloride combination present in the chemical composition, detecting the fluorescence emitted by the dipicolinic acid-terbium chloride combination via the detector module, and determining the concentration of dipicolinic acid using predetermined relationship between fluorescence emitted and the concentration of dipicolinic acid-terbium chloride combination.

Abstract: Techniques are disclosed for locating an occupant within an area. The system includes a first sensor including a first plurality of pixels for receiving a thermal energy input from the occupant within a first field of view (FOV) and a second sensor including a second plurality of pixels for receiving the input within a second FOV. A first distance from the occupant to the first sensor is determined based on the input received by at least one pixel of the first plurality of pixels and a first sensor location from an origin. A second distance from the occupant to the second sensor is also determined based on the input received by at least one pixel of the second plurality of pixels and a second sensor location relative to the origin. A coordinate position for the occupant relative to the origin is determined based on the determined first and second distances.

Abstract: A scanner includes an emitter configured to emit a wave in a direction of propagation to penetrate layers of a structure of a target object and a receiver configured to measure intensities of the wave reflected by the layers of the target object. The scanner also includes a hardware processor configured to partition the intensities of the reflected wave into a set of segments, such that each segment is the reflection from a corresponding layer of the target object, defining a multi-layered structure of the target object; and reconstruct images of the layers of the target object from corresponding segments using a joint-layer hierarchical image recovery that prevents an increase in sparsity of the layers of the target object in the direction of propagation of the wave. An output interface is configured to render the reconstructed images of layers of the target object.

Abstract: A LIBS analysis system and method for liquids wherein a handheld LIBS analyzer has a nose section through which a laser beam passes. A sample holder positioner is attached to the nose section of the hand held LIBS analyzer. A sample holder is receivable in the sample holder positioner and includes a container for a liquid and an opening for filling the container with the liquid.

Abstract: The ACASS 3D LIDAR system operates in a fundamentally new manner combining features of flash LIDARS and scanning LIDARS simultaneously which enables mission and performance trades to be conducted by varying the sizes of illumination patches within the scenes being observed. Further the combination of these modes of operation into a single LIDAR system enables multiple modes of operation and multiple missions to be accomplished with single lasers obviating the need for multiple lasers and enabling significant simplification of beam control modes. Systems which result from the new, expanded size, weight, power, cost trade space enabled by the ACASS concept can provide new levels of performance at significantly reduced risks and costs The achievement of wide area, three dimensional imaging using a LIDAR sensor system is accomplished with one laser which operates using an eye safe fiber laser with very high puke 13 rates but very low energy per pulse.

Abstract: An apparatus (10) and method for adjusting and/or calibrating a multi-camera module (2) having a plurality of cameras (4a, 4b). The apparatus (10) includes an optical arrangement for creating first virtual test structures (22) at an infinite distance and second test structures (26, 32) at a finite distance. Individual images (20a, 20b) captured with the cameras (4a, 4b) of the multi-camera module (2) include respectively the first and the second test structure (22, 26, 32). Based on the deviation of the position of the test structures (22, 26, 32) in the two individual images (20a, 20b), the cameras (4a, 4b) of the multi-camera module (2) are aligned relative to each other.

Abstract: The present disclosure generally pertains to endoscopes configured to utilize a single optical channel for both image extraction and illumination. In certain embodiments, the disclosure contemplates an endoscope configured with a source of illumination outside of the visible spectrum, such as ultraviolet (UV) light, with the endoscope configured to down-convert such illumination into visible light at the distal end of the endoscope. This configuration not only avoids or reduces image flooding caused by the unwanted reflections on optical surfaces within the endoscope relays and objective, but also doubles the effective area of the lenses, thereby allowing higher quality imaging.

Abstract: An integrated system for monitoring a chemical concentration in an ionic liquid, comprising: a. an online FTIR instrument with an ATR window; b. a sample conditioning station that removes light hydrocarbons and produces a degassed ionic liquid that is analyzed by FTIR; and c. a solvent flushing system that flows solvent across the ATR window. Also, a process for monitoring the chemical concentration, comprising: a. degassing the ionic liquid in the sample conditioning station; b. passing the degassed ionic liquid over an ATR window; c. periodically redirecting a flow of the degassed ionic liquid via a bypass line or an on-off valve that isolates the ATR window from the process unit that elutes the ionic liquid; and d. flowing a solvent and a purging gas over the ATR window during the periodically redirecting step c); and e. resuming the passing of the degassed ionic liquid over the ATR window.

Abstract: A system and method for detecting leakage oil with a high degree of accuracy while avoiding the complexity of the system and the influence of noise light comprise: ultraviolet light sources arranged to irradiate an oil-filled device from a plurality of different incidence angles, and are switched on and off at the respective incidence angles in sequence, and include a wavelength exciting oil; an imaging device to photograph the oil-filled device irradiated with ultraviolet light emitted from the ultraviolet light sources when the ultraviolet light sources are switched on; a recorder to record respective images photographed by the imaging device; and a display to display the respective images. The respective images are compared, a site where a light emitting position does not change always is judged as a leakage oil site, and a site emitting light or not emitting light occasionally is judged as a noise light site.

Abstract: Presented is an optical coherence tomography system and method to increase imaging depth of optical coherence tomography (OCT) by selective amplification. In a swept-source OCT system with periodically linear wavenumber-vs-time characteristic, the signal in principle is summation of various sinusoidal signals with different frequencies. Each frequency component of the recorded signal carries reflectivity information for a certain depth of the analyzed object. At greater depth inside the analyzed object, the reflectivity information is generally weak due absorption and scattering. An analog or digital electronic circuit selectively filters and amplifies frequencies above some threshold, possibly up to another threshold. In this way, even small signals for relatively larger depths become detectable.

Abstract: Computer-implemented methods and systems for liveness analysis using proximity sensors are described. Reflective strength readings from a proximity sensor, such as an infrared proximity sensor incorporated in a mobile device, are received. A liveness measure is determined based on the one or more readings and a reflection threshold, and, based on the liveness measure, a determination is made whether a target in range of the proximity sensor is likely to be a live human.

Abstract: A method for heat blanket certification employs a thermochromatic coating containing one or more chromatic probes which is prepared and applied to a measurement surface. A test layup is created with the heat blanket and a vacuum bagging film. The vacuum bagging film is sealed and a vacuum is drawn through a vacuum probe in the vacuum bagging film. The heat blanket is brought to operating temperature and the thermochromatic coating is illuminated with ultraviolet light. The chromatic probe coloration is then observed for determination of temperature consistency in the heat blanket.