Abstract: The invention provides a method of estimating an input count rate of a radiation pulse detector from a detector signal where some individual signal pulses making up the detector signal are closely spaced in time less than a minimum reliable detection gap. In one aspect, the individual signal pulses are detected using a detection algorithm and a plurality of interval start times are defined each interposed with at least one of the detected individual signal pulse arrival times, each interval start time being later by at least the minimum reliable detection gap than a corresponding most recent detected individual signal pulse arrival time. A corresponding plurality of individual signal pulse arrival intervals are calculated between each of the interval start times and a corresponding next detected individual signal pulse arrival time.

Abstract: A compact and miniaturized Fourier transform photoluminescence (PL) spectrometer is provided comprising five functional modules, which are all mounted on a same baseplate: (i) a sample placement module for positioning and spatially adjusting the sample to be tested, which includes a 3-axis stage (10) and a position mark (11) for the expected front surface of the sample being tested. The stage is employed for positioning the sample directly or a low-temperature optical cryostat that contains the sample (said sample and cryostat being not parts of the spectrometer), the position mark indicates the pre-aligned position for the projection of the sample's front surface in the horizontal plane; (ii) a built-in pump light source module for generating PL signal, which includes two lasers (20) and (21) with different laser wavelengths, the lasers' output can be selected on request in the wavelength range from ultraviolet to near-infrared.

Abstract: The invention relates to a process for manufacturing a microbolometer (10) comprising a sensitive material (15) based on vanadium oxide (VOx) comprising an additional chemical element chosen from among boron (B), carbon (C), with the exception of nitrogen (N), comprising the following steps: i. determining a non-zero effective amount of the additional chemical element (B, C) starting from which the sensitive material (15), having undergone exposure to a temperature Tr for a duration ?tr, has an electrical resistivity ?a|r at ambient temperature greater than or equal to 50% of the native value ?a of said sensitive material (15); ii. producing the sensitive material (15) in a thin layer having an amount of the additional chemical element (B, C) greater than or equal to the effective amount determined beforehand, the sensitive material being amorphous and having an electrical resistivity of between 1 and 30 ?·cm; iii.

Abstract: A method for manufacturing a near-infrared sensor cover includes a film setting step. The film setting step includes setting a heater film on a first molding die and setting a hard coating film on a second molding die. The method for manufacturing a near-infrared sensor cover further includes a base molding step for molding a base including clamping a mold, injecting molten plastic into a gap between the heater film and the hard coating film, and curing the molten plastic.

Abstract: A shield around an x-ray tube, a voltage multiplier, or both can improve the manufacturing process by allowing testing earlier in the process and by providing a holder for liquid potting material. The shield can also improve voltage standoff. A shielded x-ray tube can be electrically coupled to a shielded power supply.

Abstract: The present disclosure discloses an infrared sensor, an infrared gas detector and an air quality detection device. The infrared sensor includes electrodes, a substrate, an isolation layer and a graphene film. The graphene film has a periodical nanostructure. The infrared sensor enhances the absorption of infrared light, and is capable of only absorbing specific infrared wavelengths, thus improving the selective performance of the infrared gas detector.

Abstract: A calibration device for precise calibration of a microwave radiometer is described. The calibration device has a housing that partially encompasses a calibration chamber. The housing includes a microwave transparent portion that is provided at a wall of the housing. The microwave transparent portion defines an entry for microwaves into the calibration chamber. The microwave transparent portion is made by a microwave transparent material that is insulating. An absorber at a defined temperature is provided within the calibration chamber. An interface between the microwave transparent portion and the absorber is provided, which ensures a substantially reflection free entry of the microwaves into the calibration chamber. The substantially reflection free entry of the microwaves corresponds to capturing at least 3 orders of reflection of the microwaves. Further, a method of calibrating a microwave radiometer is described.

Abstract: A control system (30) for a laser projector (10), a terminal (100) and a control method for the laser projector (10) are provided. The control system (30) includes a first driving circuit (31), a microprocessor (35) and an application processor (33). The first driving circuit (31) is connected with the laser projector (10). The first driving circuit (31) is configured to drive the laser projector (10) to project laser. The microprocessor (35) is connected with the first driving circuit (31). The application processor (33) is connected with the microprocessor (35). The application processor (33) is configured to send a control signal to the microprocessor (35) according to a distance between a human eye and the laser projector (10). The microprocessor (35) controls the first driving circuit (31) according to the control signal to enable the laser projector (10) to project laser according to a predetermined parameter.

Abstract: One embodiment of the present invention provides an optical imaging apparatus using a metamaterial including a metamaterial array sensor which includes a plurality of unit cells made of a metamaterial and is positioned adjacent to an observation object, an imaging beam providing unit which provides an imaging beam toward the metamaterial array sensor, a control beam providing unit which controls a control beam provided to the unit cell to block the imaging beam incident on the unit cell, and an imaging beam measuring unit which measures a unit cell imaging beam transmission amount passing through the unit cell by measuring an imaging beam transmission amount of the metamaterial array sensor when the imaging beam passes through the unit cell and an imaging beam transmission amount of the metamaterial array sensor when the control beam is focused on the unit cell to block the imaging beam incident on the unit cell.

Abstract: In an embodiment, a photodetector is provided that provides a sensitizing medium adapted to receive electromagnetic radiation creating a junction with a transport channel, wherein the transport channel is adapted to exhibit a change in conductivity in response to reception of electromagnetic radiation by the sensitizing medium.

Abstract: Methods, systems, and program products of inspecting solar panels using unmanned aerial vehicles (UAVs) are disclosed. A UAV can obtain a position of the Sun in a reference frame, a location of a solar panel in the reference frame, and an orientation of the solar panel in the reference frame. The UAV can determine a viewing position of the UAV in the reference frame based on at least one of the position of the Sun, the location of the solar panel, and the orientation of the solar panel. The UAV can maneuver to the viewing position and point a thermal sensor onboard the UAV at the solar panel. The UAV can capture, by the thermal sensor, a thermal image of at least a portion of the solar panel. A server onboard the UAV or connected to the UAV can detect panel failures based on the thermal image.

Abstract: The present invention discloses a multi-mode imaging optical system. The multi-mode imaging optical system includes a stage configured to hold a to-be-tested sample. An imaging unit implements in-situ imaging of the to-be-tested sample. An absorption and forward scattering illumination unit irradiates the to-be-tested sample, and forms absorption imaging or forward scattered light imaging in the imaging unit. A side scattering illumination unit performs a first oblique illumination on the to-be-tested sample, so that scattered light of microparticles in the to-be-tested sample forms side scattered light imaging in the imaging unit. A fluorescent illumination unit performs a second oblique illumination on the to-be-tested sample, and excites the microparticles in the to-be-tested sample to emit fluorescence, where the fluorescence forms fluorescence imaging in the imaging unit.

Abstract: A method for altering paths of optical photons that pass through a scintillator. The scintillator includes a plurality of vertical sides. The method includes forming a reflective belt inside the scintillator by creating a portion of the reflective belt inside the scintillator on a vertical plane parallel with a vertical side of the plurality of vertical sides. Creating the portion of the reflective belt includes generating a plurality of defects on the vertical plane.

Abstract: A solution for reading detector arrays is disclosed. The solution comprises generating (400) an excitation signal, varying (402) the frequency of the excitation signal in time, supplying (404) the excitation signal to a detector array comprising a set of thermal detectors. The number of detectors corresponds to the frequencies of the excitation signal. In the solution, the signal is demodulated (406) at the output of the detector array and time-multiplexed base band signal is obtained. An analogue to digital conversion is performed (408) to the time-multiplexed base band signal and the base band signal is demultiplexed (410) to obtain a set of detector signals.

Abstract: An infra-red imaging device comprising: a cryostat (4), an infra-red detector (6) arranged inside the cryostat (4) to receive an optical signal coming from outside the imaging device, a linear polarizer configured to polarize the optical signal along a variable direction of polarization, before the optical signal reaches the infra-red detector (6), the linear polarizer comprising: a first polarizing element (22) arranged outside the cryostat (4) and movable in rotation with respect to the cryostat (4), and a second polarizing element (24) arranged inside the cryostat (4) between the first polarizing element (22) and the infra-red detector (6) and fixed with respect to the cryostat (4).

Abstract: A microbolometer read-out circuit includes an extraction circuit configured to detect a voltage signal of a temperature variation; an analog-to-digital converter coupled to the extraction circuit and configured to digitalize the voltage signal of the temperature variation; an image processing circuit coupled to the analog-to-digital converter; and wherein the image processing circuit is coupled to a gain digital-to-analog converter and an offset digital-to-analog converter.

Abstract: Provided are a terahertz wave detection device and a terahertz wave detection system to execute checking at high speed with high sensitivity and accuracy and to execute omnidirectional inspection without requiring a large checking system. A flexible array sensor (30) includes: a terahertz wave detection element (10) having a flexible single-walled carbon nanotube film (11), and a first electrode (12) and a second electrode (13) disposed to face each other on a two-dimensional plane of the single-walled carbon nanotube film (11); and a flexible substrate (20) having flexibility to support the terahertz wave detection element (10) so as to be freely curved. The flexible substrate (20) is preferably formed in a curved or cylindrical shape, so that the terahertz wave detection elements (10) are arrayed on the flexible substrate 20 formed in a curved or cylindrical shape.

Abstract: A millimeter wave molecular sensor system is provided. The system includes a physics cell configured to contain a sample, a directional coupler configured to receive input millimeter waves, partition the input millimeter waves into a pump signal and a probe signal for transfer to the physics cell, a receiver configured to receive millimeter waves exiting the physics cell, a Faraday rotator coupled between a pump transmitter and the physics cell, and a coupling iris coupled between the Faraday rotator and the physics cell, configured to pass millimeter waves having a first polarization into the physics cell. The Faraday rotator includes a Faraday material, and an electronic device configured to apply a magnetic field to the Faraday material parallel to a propagation direction of the millimeter waves such that when the electronic device is activated, the Faraday material rotates a polarization of the millimeter waves passing through the Faraday rotator.

Abstract: A detector module is disclosed. In one example, the detector module is for a photo-acoustic gas sensor and comprises a first substrate made of a semiconductor material and comprising a first surface and a second surface opposite to the first surface, a second substrate comprising a third surface, a fourth surface opposite to the third surface, and a first recess formed in the fourth surface. The second substrate is connected with its fourth surface to the first substrate so that the first recess forms an airtight-closed first cell which is filled with a reference gas and a pressure sensitive element comprising a membrane disposed in contact with the reference gas. The detector module is further configured such that a beam of light pulses passes through the first substrate and thereby enters the first cell.

Abstract: The present invention relates to a sensor wiring substrate in which a decrease in detection accuracy is suppressed, a sensor package, and a sensor device. A gas sensor wiring substrate includes a substrate having a first accommodation recessed portion for accommodating a microphone element and a second accommodation recessed portion for accommodating an infrared light emitting element, and connection wiring. In the gas sensor wiring substrate, thermal resistance of a heat transfer path between a bottom surface of the first accommodation recessed portion and a bottom surface of the second accommodation recessed portion is greater than thermal resistance in any position of an imaginal heat transfer path in case of a depth of the first accommodation recessed portion identical with a depth of the second accommodation recessed portion. For example, the depth of the second accommodation recessed portion is deeper than the depth of the first accommodation recessed portion.