Abstract: In a calibration chart device 20, a peak detector 32 detects, from plural infrared images shot at respective movement positions by an infrared camera IRC by sequentially moving a marker whose distribution of an infrared-ray radiation amount in a moving direction is a unimodal distribution in a first direction and plural infrared images shot at respective movement positions by the infrared camera IRC by sequentially moving the marker in a second direction different from the first direction, a position of the marker at which a pixel value is maximized, for each pixel. A calibration processor 36 calculates a camera parameter by using the position of the marker detected by the peak detector 32 for each pixel. With this configuration, calibration of the infrared camera can be performed with ease.

Abstract: A method for observing a fluorescent sample, the sample comprising a fluorescent agent that emits fluorescence light, in a fluorescence spectral band, when it is illuminated by excitation light, in an excitation spectral band, the method comprising the following steps: a) placing the sample on a holder; b) illuminating the sample, with an excitation light source, in the excitation spectral band, the light emitted by the light source propagating along a propagation axis; c) detecting fluorescence light, in the fluorescence spectral band, with an image sensor; the method being such that the holder comprises a thin layer formed from a first material, of a first refractive index, the thin layer lying in a holder plane perpendicular to the propagation axis, the thin layer comprising a first photonic crystal and second photonic crystals configured to confine the excitation light and the fluorescence light in the thin layer.

Abstract: A UV sensor includes a GaN stack including a low-resistance GaN layer formed over a nucleation layer, and a high-resistance GaN layer formed over the low-resistance GaN layer, wherein a 2DEG conductive channel exists at the upper surface of the high-resistance GaN layer. An AlGaN layer is formed over the upper surface of the high-resistance GaN layer. A source contact and a drain contact extend through the AlGaN layer and contact the upper surface of the high-resistance GaN layer (and are thereby electrically coupled to the 2DEG channel). A drain depletion region extends entirely from the upper surface of the high-resistance GaN layer to the low-resistance GaN layer under the drain contact. An electrical current between the source and drain contacts is a function of UV light received by the GaN stack. An electrode is connected to the low-resistance GaN layer to allow for electrical refresh of the UV sensor.

Abstract: Optical detectors and methods of forming them are provided. The detector includes: a controller, pump and probe laser generators that generate modulated pump laser and probe lasers, respectively, a microring cavity that receives the lasers, a microbridge, and a photodetector. The microring cavity includes covered and exposed portions. The microbridge is suspended above the exposed portion and interacts with an evanescent optical field. The wavelength and modulated power of the pump laser are controlled to generate the evanescent optical field that excites the microbridge to resonance. The microbridge absorbs optical radiation which changes the resonance frequency proportionately. The probe laser is modulated in proportion to a vibration amplitude of the microbridge to form a modulated probe laser which is provided to the photodetector.

Abstract: A display device and a detection method are provided. The display device includes a display panel including an effective area and a peripheral area located around the effective area; and a cover plate attached to the display panel, the cover plate including a visible region, and the boundary of the visible region of the cover plate is located outside the boundary of the effective region of the display panel in a direction parallel to the display panel; at least one pair of light sensitive luminescent marks disposed on the display panel and located near mutually opposite edges of the display panel. Each of the at least one pair of light sensitive luminescent marks is disposed inside or outside an effective area of the display panel in a direction parallel to the display panel.

Abstract: A radiation position detection method includes: a first step of calculating a first centroid position in an incident direction regarding positions where scintillation light is detected, on the basis of electrical signals; and a second step of specifying, on the basis of a first table showing first identification regions for identifying the plurality of segments, and the first centroid position, the segment that initially generates the scintillation light. The first identification region includes a first region, a second region, and a third region. In the second step, in a case where the first centroid position is located in the first region or the third region, the first segment is specified as the segment that initially generates the scintillation light, and in a case where the first centroid position is located in the second region, the second segment is specified as the segment that initially generates the scintillation light.

Abstract: An embodiment of a method of automatically generating a background measurement in a spectrometer is described that comprises the steps of: collecting a plurality of candidate scans in the spectrometer; determining for each of the plurality of candidate scans if the candidate scan correlates to an orthonormal basis set that is associated with a recent background description; saving each candidate scan that correlates to the orthonormal basis set as a background scan in a scan cache; and generating a new background measurement from a plurality of the background scans stored in the scan cache if a current background measurement is older than a preselected time interval.

Abstract: An optically transparent electromagnetic shield assembly comprising an electrical connection device with variable electrical resistance. The electrical connection device electrically connects a conductive two-dimensional structure, which covers a transparent substrate, to a shell portion which is electrically conductive. The resistance of the connection device can be adjusted, either initially for a detection system for which the shield assembly is intended or in real time while the shield assembly is in use, according to an RF radiation intensity.

Abstract: There is disclosed methods and apparatus for detecting contamination on cold-formed steel parts prior to subsequent press-hardening in which such contamination may be problematic, and also for detecting contamination on cold-forming machinery that might be transferred to cold-formed steel parts during cold-forming. In some aspects, the disclosure also relates to methods and apparatus for detecting splits or cracks in cold-formed steel parts prior to subsequent press-hardening. The methods and apparatus make use of ultraviolet light to detect contamination or to detect splits or cracks.

Abstract: A system for biomolecule identification by terahertz sensing, an asymmetric triple split-rectangular (ATSR) metamaterial biosensor, and a method for biomolecule identification by terahertz sensing are presented. The asymmetric triple split-rectangular (ATSR) metamaterial biosensor includes three gap areas which highly confine an electric field. The biosensor includes an E-shaped structure facing an inverted E-shaped structure with gaps between the respective legs. Each leg has a specially designed extension on either side which increases the electric field. A terahertz laser interrogates an analyte upon the metamaterial structure with a plurality of frequencies. The amplitude difference is estimated by an amplitude difference referencing technique. The amplitude difference is matched to a database record to identify the biomolecule analyte.

Abstract: Improved techniques for infrared imaging and gas detection are provided. In one example, a system includes a sensor array configured to receive infrared radiation from a scene comprising a background portion and a gas. The sensor array includes a first set of infrared sensors configured with a first spectral response corresponding to a first wavelength range of the infrared radiation associated with the background portion. The sensor array also includes a second set of infrared sensors configured with a second spectral response corresponding to a second wavelength range of the infrared radiation associated with the gas. The system also includes a read out integrated circuit (ROIC) configured to provide pixel values for first and second images captured by the first and second sets of infrared sensors, respectively, in response to the received infrared radiation. Additional systems and methods are also provided.

Abstract: A light source device includes a substrate, an upper electrode layer and a lower electrode layer respectively disposed on two opposite surfaces of the substrate, a plurality of first conductive posts and second conductive posts embedded in the substrate and having the same number, a light emitter, a surrounding frame surrounding the light emitter, and a light permeable member disposed on the surrounding frame and covering the light emitter. The first conductive posts connect a first upper electrode pad of the upper electrode layer and a first lower electrode pad of the lower electrode layer. The second conductive posts connect a second upper electrode pad of the upper electrode layer and a second lower electrode pad of the lower electrode layer. The light emitter is mounted on the first upper electrode pad and is electrically connected to the second upper electrode pad.

Abstract: The present invention relates to a radioactivity measurement method and a radioactivity measurement system using data expansion. A radioactivity measurement method using data expansion according to the present invention comprises the steps of: measuring radioactivity while performing energy scanning and temporal scanning; preparing a database from a time-energy-related data set obtained in result of the scanning; expanding the database by means of random distribution fitting; and obtaining a radioactivity measurement value of desired time from the database.

Abstract: Described are methods and systems for scanning at least a portion of a patient with a gamma detector mounted on an arm extending towards the patient. One described method includes: obtaining data indicative or coordinates of points on the outer surface of the patient; determining a target position for the gamma detector based on the data indicative, of the coordinates; and causing the gamma detector to detect gamma radiation from the patient when the gamma detector is at the target position.

Abstract: The present invention relates to a system (10) and method for the volumetric and isotopic identification of the spatial distribution of ionizing radiation from point or extensive radioactive sources (3) in radioactive surroundings. More specifically, this system (10) comprises a gamma radiation detector (2) and an optical transducer (1) joined to each other and linked to a control unit to detect the absolute position of radioactive sources (3) relative to a visual reference located in the radioactive surroundings, and to determine the radioactive activity of the sources, that is to say it detects the isotope composition of the radioactive sources (3).

Abstract: The present disclosure relates to a substrate defect measuring apparatus for detecting defects inside a substrate by photoluminescence and detecting defects outside the substrate by using the scattering of incident light for generating photoluminescence, and provides an apparatus for constituting an optical system in order to measure scattered and/or reflected light together in a procedure of measuring the photoluminescence, thereby shortening a measurement time.

Abstract: A system identifying a source of radiation is provided. The system includes a radiation source detector and a radiation source identifier. The radiation source detector receives measurements of radiation; for one or more sources, generates a detection metric indicating whether that source is present in the measurements; and evaluates the detection metrics to detect whether a source is present in the measurements. When the presence of a source in the measurements is detected, the radiation source identifier for one or more sources, generates an identification metric indicating whether that source is present in the measurements; generates a null-hypothesis metric indicating whether no source is present in the measurements; evaluates the one or more identification metrics and the null-hypothesis metric to identify the source, if any, that is present in the measurements.

Abstract: In an FTIR 1, a beam splitter 12, fixed mirror 13 and movable mirror 14 are shared by a main interferometer 10 including a multiwavelength infrared light source 11 and a control interferometer 20 including a semiconductor laser 21. A first detector 16 detects infrared interference light generated by the main interferometer 10 and transmitted through or reflected by a sample. A second detector 26 detects monochromatic interference light generated by the control interferometer 20. A spectrum creator 32 determines an optical path difference between an optical path via the fixed mirror 13 and an optical path via the movable mirror 14, based on the intensity and uncalibrated oscillation wavelength of the monochromatic interference light detected by the second detector 26, and creates a spectrum by performing fast Fourier transform on an interferogram which shows a distribution of the intensity of the infrared interference light detected by the first detector 16 with respect to the optical path difference.

Abstract: Provided is a structure capable of detecting near-infrared light with good sensitivity. Also provided are a composition for forming a near-infrared transmitting filter layer used in the structure and an optical sensor capable of detecting near-infrared light with good sensitivity. This structure 101 has a support 1, a partition wall 2 provided on the support 1, and a near-infrared transmitting filter layer 11 that shields visible light and transmits at least a portion of near-infrared light, provided in a region partitioned by the partition wall 2, in which the refractive index of the partition wall 2 is smaller than the refractive index of the near-infrared transmitting filter layer 11 at at least a portion of the wavelengths of the near-infrared light transmitted by the near-infrared transmitting filter layer 11.

Abstract: The present invention relates to a neutron detector that for the first time permits the construction of large detector areas of approximately 1 m2 to 2 m2, with a spatial resolution of the neutrons of under 2 mm. It is additionally possible in the case of the modular construction in a stack arrangement to attain detection sensitivities that are comparable to 3He counter tubes (ca. 60%) or, with a greater number of detector elements, higher. By using thin substrate plates—such as aluminum sheets—and omission of the external pressure vessels, the neutron detectors are relatively lightweight despite their large dimensions and can be produced inexpensively.