Abstract: A system for use in identifying a user includes a portable emitter transported with the user. The emitter includes a quantum cascade laser configured to emit a thermal beam identifying a location of the user in response to a command, the thermal beam having a wavelength between approximately 2 ?m and approximately 30 ?m.

Abstract: A semiconductor device comprises a plurality of quantum structures comprising predominantly germanium. The plurality of quantum structures are formed on a first semiconductor layer structure. The quantum structures of the plurality of quantum structures have a lateral dimension of less than 15 nm and an area density of at least 8×1011 quantum structures per cm2. The plurality of quantum structures are configured to emit light with a light emission maximum at a wavelength of between 2 ?m and 10 ?m or to absorb light with a light absorption maximum at a wavelength of between 2 ?m and 10 ?m.

Abstract: Illustrative embodiments disclosed herein pertain to a thermal imaging system that includes a thermal imaging sheet having an array of thermal unit cells for generating a thermal footprint in response to receiving an RF signal. The thermal footprint is composed of an array of hotspots having a first set of hotspots indicative of a radiation characteristic of a first polarization component of the RF signal, and a second set of hotspots indicative of a radiation characteristic of a second polarization component of the RF signal. Each thermal unit cell includes a first RF antenna and a second RF antenna oriented orthogonal with respect to each other. The first RF antenna includes a terminating resistor that generates a hotspot among the first set of hotspots and the second RF antenna includes another terminating resistor that generates a hotspot in the second set of hotspots.

Abstract: Apparatus and methods for rapidly detecting, localizing, imaging, and quantifying leaks of natural gas and other hydrocarbon and greenhouse gases. Scanning sensors, scan patterns, and data processing algorithms enable monitoring a site to rapidly detect, localize, image, and quantify amounts and rates of hydrocarbon leaks. Multispectral short-wave infrared detectors sense non-thermal infrared radiation from natural solar or artificial illumination sources by differential absorption spectroscopy. A multispectral sensor is scanned to envelop an area of interest, detect the presence and location of a leak, and raster scan the area around the leak to create an image of the leak. The resulting absorption image related to differential spectral optical depth is color mapped to render the degree of gas absorption across the scene. Analysis of this optical depth image, with factors including known inline pressures and/or surface wind speed measurements, enable estimation of the leak rate, i.e.

Abstract: An approach for controlling ultraviolet intensity over a surface of a light sensitive object is described. Aspects involve using ultraviolet radiation with a wavelength range that includes ultraviolet-A and ultraviolet-B radiation to irradiate the surface. Light sensors measure light intensity at the surface, wherein each sensor measures light intensity in a wavelength range that corresponds to a wavelength range emitted from at least one of the sources. A controller controls the light intensity over the surface by adjusting the power of the sources as a function of the light intensity measurements. The controller uses the light intensity measurements to determine whether each source is illuminating the surface with an intensity that is within an acceptable variation with a predetermined intensity value targeted for the surface. The controller adjusts the power of the sources as a function of the variation to ensure an optimal distribution of light intensity over the surface.

Abstract: The present disclosure relates to a spectrometric measuring device for a process measuring point including a housing, a radiation source arranged in the housing, a coupling and decoupling optical system to direct radiation from the radiation source into a measuring region and to couple measuring radiation from the measuring region into the housing, a spectrograph arranged in the housing and aligned such that the measuring radiation is detected by the spectrograph with a detector, an electronic device arranged in the housing and connected to the detector and configured to detect a spectrum from the spectrograph and to process it to determine a concentration of an analyte in the measuring medium or a value derived therefrom, and a connection connected to the housing for connecting the housing to a process container, wherein the measuring region is located within a volume of the process container, said volume containing the measuring medium.

Abstract: A downhole system comprises a main sensor, such as a gamma sensor, and a backup sensor. The backup sensor may be of a different type from the main sensor. In some embodiments the backup sensor is a high reliability sensor that may have a different sensitivity from the main sensor. The system operates both the main and backup sensors and generates calibration data for the backup sensor. If the main sensor fails the calibration data may be applied to process data from the backup sensor to yield an estimate of the data that the main sensor would have yielded if it had remained operational. The calibration data may compensate for temperature variations and/or temporal drift, for example.

Abstract: An X-ray inspection apparatus includes an X-ray irradiation unit that irradiates an article with X-rays, an X-ray detection unit that detects the X-rays transmitted through the article, an inspection unit that generates an X-ray transmission image of the article based on a signal output from the X-ray detection unit and performs inspection of the article based on the X-ray transmission image, and a control unit that controls the X-ray irradiation unit and the X-ray detection unit. The control unit executes a first control of controlling the X-ray irradiation unit such that an irradiation output is increased if a detection output of the X-ray detection unit is decreased when the control unit controls the X-ray irradiation unit such that the irradiation output of the X-ray irradiation unit becomes a first irradiation output. The control unit executes the first control in a state where the article is not irradiated with the X-rays.

Abstract: A novel multi-junction detector device and method of use is disclosed, which includes a housing, at least one mount system body positioned within the housing, at least one beam dump region formed in the mount system body, with a first detector having a first wavelength responsivity range positioned on the mount system body and at least a second detector having a second wavelength responsivity range positioned on the mount system body in optical communication with the first detector.

Abstract: A fast scan detection method is provided. The fast scan detection method is applied to a rotatable scan detection device where two or more detection samplings are performed for calculating each scan detection distance value, where each of the detection samplings includes: emitting, by an emission light source, infrared detection light, where the infrared detection light propagates through a surrounding space and is reflected by a detected object when the infrared detection light encounters the detected object; and receiving, by a photoelectric sensor in a reception unit, the infrared detection light reflected by the detected object, where the rotatable scan detection device performs one detection sampling at each detection angular position at which the rotatable scan detection device is positioned.

Abstract: A system, including a structured illumination stage to provide a spatially modulated imaging field is provided. The system further includes a spatial frequency modulation stage to adjust the frequency of the spatially modulated imaging field, a sample interface stage to direct the spatially modulated imaging field to a sample, and a sensor configured to receive a plurality of fluorescence emission signals from the sample. The system also includes a processor configured to reduce a sample scattering signal and to provide a fluorescence emission signal from a portion of the sample including the spatially modulated imaging field. A method for using the above system to form an image of the sample is also provided.

Abstract: The present disclosure relates to a contact lens type dosimeter for measuring a dose distribution of a crystalline lens during radiation therapy, and a method of manufacturing the same. The ocular dosimeter has a contact lens shape and is configured to be worn on an eyeball, which comprises a basic material containing hydrophilic polyurethane, and a radiochromic dye. When the ocular dosimeter is worn on the eyeball, the dosimeter is configured to measure a radiation dose irradiated to a crystalline lens through a variation in color of the ocular dosimeter.

Abstract: A gamma-ray spectrometer calibration system comprises a photomultiplier tube and analysis electronics. The photomultiplier tube provides one or more reference signals that are analyzed relative to a spectrum by the analysis electronics to calibrate a gamma-ray spectrometer. Additional apparatus, methods, and systems are disclosed.

Abstract: An method for making a shielding assembly includes the steps of: forming a plurality of active layers, wherein each active layer of the plurality of active layers includes a base material and a fluorescent molecule; and forming a multi-layer laminate including the plurality of active layers.

Abstract: Various configurations of muon drift tubes for use in muon tomography are described and involve aluminum end caps coupled to an aluminum tube, an electrode in each of the end caps, and an anode wire extending between the electrodes. A two-part electrically conductive, gas-sealed, connection is located between an aluminum end cap and the aluminum tube. Methods of making those configurations of muon drift tubes are also described.

Abstract: A method and an apparatus are presented for monitoring a concentration of a specific halogen in a body of water such as a spa or bathing unit for example. The apparatus comprises a housing in which is positioned an optical absorption analyzer for making first and second measurement of transmission of ultraviolet light from a light source emitting light at a specific wavelength. The second and first measurements are taken respectively before and after the ultraviolet light has travelled through a sample of water and are used to derive a concentration of the specific halogen. The derived concentration may then be communicated to a user using a display device and/or may be used to control operational components of a bathing unit for adjusting the concentration of halogen in the water.

Abstract: A dosimetry device includes a first chamber formed on a substrate with a first decomposable barrier sensitive to radiation and a first chemical component. A second chamber is formed on the substrate in proximity of the first chamber and includes a second decomposable barrier sensitive to radiation and a second chemical component. Upon a radiation event, decomposition of the first and second barriers of the first and second chambers permits a mixing of the first and second chemical components to cause a visible change of the dosimetry device.

Abstract: Aspects of the present disclosure include arrays of motion sensors that may be used to monitor a space to determine occupancy characteristics of the space, such as whether or not the space is occupied and the number of people located within the space. The array of motion sensors may be operatively connected to one or more building system components, such as lighting and HVAC equipment and can be used for adjusting an operating condition of the building system component based on whether a space is occupied.

Abstract: Apparatus includes: pixel array having bias line; readout circuit; bias circuit supplying bias voltage to the bias line and having detector to detect current of the bias line and having amplifier and ADC; first power supply supplying voltage to the readout circuit; second power supply supplying voltage to the amplification circuit; and power supply supplying voltage to the first and second power supplies and the ADC via voltage line and ground line. The ground line includes first ground line connecting ground terminals of the first and second reference power supplies and second ground line connected to the power supply and the first ground line. Impedance of the second ground line is higher than that of the first ground line, arranged between the first and second reference power supplies.

Abstract: A radiation detector according to an embodiment includes a plurality of detector modules, a first and second radiation shield, and a first supporter. The first radiation shield is provided in a first detector module and is arranged on a side opposite to a surface of a first detector pack of a first detector module on which radiation is incident. The second radiation shield is arranged to intersect with a path of radiation that passes through between a first detector pack and a second detector pack of a second detector module that is arranged adjacently to the first detector module. The first supporter supports the first radiation shield such that at least a part of the first radiation shield overlaps the second radiation shield on the path of radiation.