Abstract:
It is an object of the present invention to provide a data acquiring method in an infrared imaging apparatus comprising an FTIR device of a continuous scan type for detecting a signal by a multi-element detector. A method of acquiring data from a multi-element detector in an infrared imaging apparatus comprising the steps of scanning each element of the multi-element detector in order synchronously with a sampling signal (12) generated by a reference signal (10) of an interferometer and repeating a series of scanning operations after completely scanning all the elements, thereby carrying out scan, shifting a starting point of sampling in next scan by one element from the starting point of the previous scan, thereby carrying out the same scanning, and repeating the scan at the number of times corresponding to the number of all the elements and then extracting data for each element from storing sampling data, thereby acquiring a data sequence of all the sampling points for each element.
Abstract:
It is an object of the present invention to provide a method capable of acquiring data at a high speed while holding proper precision in measurement in an infrared imaging apparatus comprising an FTIR device of a continuous scan type for detecting a signal by a multi-element detector. A method of acquiring data from a multi-element detector in an infrared imaging apparatus comprising the steps of starting to scan a element of the said multi-element detector synchronously with a sampling signal (12) based on a reference signal (10) of an interferometer, scanning the element at a higher frequency than a sampling frequency of the sampling signal (12), completing the scanning of all the elements before a next sampling signal to the sampling signal starting the element scanning is generated, and repeating a series of operations every time the sampling signal is generated.
Abstract:
Optical transmitter 2 is equipped with transmitted pulse modulator 23. at which a plurality of optical transmission patterns have previously been stored. The respective stored optical transmission patterns have mutually different ratios between infrared pulse ON times and OFF times. Optical output of infrared signal(s) transmitted from optical transmitter 2 is made variable as a result of the fact that infrared pulse(s) output during infrared output period(s) is or are output in accordance with an optical transmission pattern selected from among the plurality of optical transmission patterns.
Abstract:
A flame detection device for detecting a flame caused by a fire, including a light attenuation filter for attenuating 90% or greater of light with wavelengths in a visible to near-infrared band radiated from the flame. The flame detection device further includes an imager for photographing an image of the attenuated light incident thereon, and a processing section for deciding the flame from the image obtained by the imager.
Abstract:
A compact, wide field of view, infrared imaging system with two Mid-Wave Infrared (MWIR) and, optionally, an additional one Long-Wave Infrared (LWIR) band, has a single, color corrected lens element embedded within the detector/dewar assembly. The lens element has two aspherical surface profiles and utilizes a holographic optical element to manipulate and detect bands of energy that are harmonic components of each other. The infrared imaging system simplifies and shrinks the MWIR/LWIR imager while maintaining all of the required functionality. An exemplary infrared imaging apparatus performs at an F-stop (F/null) of at least 1.4 with a square field of view of 90null90 degrees.
Abstract:
Method of controlling an evaporative light scattering detector comprising: a nebulizer which is associated with a nebulization chamber, an evaporation chamber, and a detection chamber, characterized in that at least one parameter influencing the nebulization conditions upstream of the aerosol evaporation chamber is adjusted in such a way as to fix the response coefficient b of the evaporative light scattering detector at a regulating value likely to facilitate the analyses and/or to increase the precision and the reliability thereof, the slope b of the calibration curve being determined by the equation: Log Anullb LogmnullLoga in which A represents the surface of the signal measuring the intensity scattered by one of the compounds to analyze and m represents the mass or the concentration of this compound in the sample.
Abstract translation:控制蒸发光散射检测器的方法,包括:与雾化室,蒸发室和检测室相关联的喷雾器,其特征在于,在气溶胶蒸发室上游的影响雾化条件的至少一个参数被调节 一种将蒸发光散射检测器的响应系数b固定在可能有助于分析和/或提高其精度和可靠性的调节值的方法,校准曲线的斜率b由下式确定:Log A = b Logm + Loga,其中A表示测量被分析化合物之一散射的强度的信号的表面,m表示样品中该化合物的质量或浓度。
Abstract:
An infrared thermometer includes: a thermal-mass sleeve concentrically mounted in a probe of the thermometer main body having a flat front rim of the probe, an infrared sensor thermally conductively secured to a bottom portion of the thermal-mass sleeve and connected to a printed circuit board fixed in the main body, and a disposable hygienic cap covering the probe, with the thermal-mass sleeve defining a conical hole tapered inwardly from an outer larger opening of the sleeve towards the bottom portion of the sleeve for passing the infrared radiation waves from a larger target surface of a patient's forehead artery sensing area, whereby the flat front rim of the probe will be planarly rested upon the patient's forehead surface for a comfortable reliable body-temperature measurement.
Abstract:
A microelectronic system includes a substrate that is preferably silicon and a microelectronic device supported on the substrate. The microelectronic device may be a light sensor that include a readout integrated circuit formed in the silicon substrate, and a light detector supported on and electrically interconnected with the readout integrated circuit. A cryocooler formed in and integral with the substrate includes a gas inflow channel formed in the substrate, an expansion nozzle formed in the substrate and receiving a gas flow from the gas inflow channel, and a gas outflow channel that receives the gas flow from the outlet of the expansion nozzle. The gas inflow channel and the gas outflow channel may be countercurrent spirals.
Abstract:
An apparatus used for an epitaxial vapor growing arrangement and for detecting whether a wafer is properly seated within a susceptor contained therein. The apparatus includes a semiconductor laser element that generates a laser beam which irradiates the wafer's surface. The apparatus, further, includes a combination of a stop mechanism, a condenser lens and a photo diode, which detects the laser beam reflected from the wafer surface and an operation circuit, which determines the wafer's posture on the susceptor. During operation, the reflected laser beam focuses on a receiving surface of the photo diode through the condenser lens. The operation circuit then compares the output signal from the photo diode with a preset reference value for discriminating the slope of the wafer.
Abstract:
A radiation detector employs a thermopile having a potentiometer for calibrating the thermopile output to best suit a particular output meter and sensing application. A thermocouple may be connected in series with the thermopile. The output of the thermopile is calibrated to best match a linear function which intersects the thermopile output function at a temperature in the center of a temperature range of interest. A total output signal of the detector is the sum of the thermopile signal and the thermocouple signal, and is indicative of the temperature of a target emitting radiation sensed by the thermopile. The series connection of the thermopile and the thermocouple allow the thermopile hot junction temperature to be referenced to the cold junction temperature of the thermocouple. Thus, the reference temperature may be remote from the thermopile sensor. A filtering lens may be used to prevent short wavelength radiation from reaching the thermopile sensor, improving the linearity of the thermopile response. To improve the response to low emissivity targets, long wavelength radiation may be filtered out at a loss of linearity. Two detectors may be connected differentially to provide a differential output indicative of the temperature difference between two targets. Additionally, a temperature dependent variable resistor may be coupled to the thermopile, providing a variable resistance that combines with the thermopile output response to produce a linearized thermopile output response. Then, the total output signal of the detector for a particular target temperature is independent of fluctuations in local temperature.