Abstract:
본 발명은 하기 일반식에 해당하는 반복 단위를 하나 이상 포함하는 폴리아미드에 관한 것이다: XY (식 중, X 은 시클로지방족 디아민을 나타내고, Y 는 도데칸이산 (C 12 ), 테트라데칸이산 (C 14 ) 및 헥사데칸이산 (C 16 ) 으로부터 선택되는 지방족 디카르복실산을 나타내고, 상기 디카르복실산은 표준 ASTM D6866 에 따라 결정되는 재생가능한 기원의 유기 탄소를 포함하는 것을 특징으로 함). 또한, 본 발명은 상기 폴리아미드를 포함하는 조성물 및 또한 상기 폴리아미드의 용도 및 상기 조성물의 용도에 관한 것이다.
Abstract:
A system for determining a calibrated spectral measurement includes a tunable Fabry-Perot etalon, a detector, and a processor. The tunable Fabry-Perot etalon has a settable gap. The detector measures light intensity. The processor is configured to determine the calibrated spectral measurement. The calibrated spectral measurement is based at least in part on a measurement set of detected light intensities for a plurality of settable gaps and a reconstruction matrix. The reconstruction matrix is based at least in part on calibration measurements. For a calibration measurement, a settable gap is selected and a set of input monochromatic source wavelengths is used to measure responses at a detector after transmission through the Fabry-Perot etalon. Each input monochromatic source wavelength is also measured using a radiometer to scale detector measurements.
Abstract:
A self-referencing mobile-compatible spectrophotometric system, including at least one light source, at least one spectral detection unit, and at least one reference sample. The system is configured to apply light from the at least one light source to a sample and receive a reflected light from the sample, and apply light to the at least one reference sample, and receive a reference reflected light from the at least one reference sample.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren und eine Vorrichtung zur Kalibration eines optischen Resonators. Dabei umfasst das Verfahren die folgenden Schritte: Erzeugen von Lichtpulsen einer bekannten Pulsfrequenz mittels einer Lichtpulserzeugungseinheit; Einkoppeln der Lichtpulse in den Resonator (20); Detektieren von aus dem Resonator (20) austretendem Licht mittels einer Detektionseinrichtung zur Erzeugung eines Detektionssignals, wobei die Detektionseinrichtung ausgelegt ist, das Detektionssignal mit Hilfe eines Modulators als ein mit einer Modulationsfrequenz moduliertes Signal zu erzeugen, wobei die Modulationsfrequenz im Wesentlichen gleich der Pulsfrequenz der erzeugten Lichtpulse ist oder wobei die Modulationsfrequenz im Wesentlichen ein ganzzahliges Vielfaches der Pulsfrequenz der erzeugten Lichtpulse beträgt oder wobei die Pulsfrequenz der erzeugten Lichtpulse im Wesentlichen ein ganzzahliges Vielfaches der Modulationsfrequenz beträgt; und Kalibrieren des optischen Resonators (20) auf Basis des Detektionssignals. Ferner betrifft die vorliegende Erfindung eine Verwendung der erfindungsgemäßen Vorrichtung, eine Verwendung eines schaltbaren Detektors oder eines optischen Modulators sowie ein Computerprogrammprodukt.
Abstract:
Die Erfindung betrifft ein Verfahren zur Verbesserung des Dynamikbereichs einer Vorrichtung zum Detektieren von Licht, vorzugsweise zur Anwendung in einem Mikroskop, mitmindestens zwei Detektionsbereichen (8, 9), wobei die Detektionsbereiche (8, 9) jeweils aus einer Anordnung (Array) (8, 9) aus mehreren Single-Photon-Avalanche-Dioden (SPAD) gebildet werden und wobei die Detektionsbereiche (8, 9) jeweils zumindest einen Signal- Ausgang (10, 11) aufweisen, wobei für jeden der Detektionsbereiche (8, 9) eine Kennkurve (12, 13) ermittelt wird und wobei die Kennkurven (12, 13) zum Erhalt einer Korrekturkurve (15) und/oder eines Korrekturfaktors (17) miteinander kombiniert und/oder verrechnet werden. Des Weiteren betrifft die Erfindung eine Vorrichtung zum Detektieren von Licht, insbesondere zur Anwendung in einem Mikroskop. Ferner betrifft die Erfindung ein entsprechendes Mikroskop.
Abstract:
This invention relates to a system and method to improve the signal to noise ratio (SNR) of optical spectrometers that are limited by nonrandom or fixed pattern noise. A signal from a sample is collected using a short test exposure, a total observation time to maximize SNR is calculated, and the total observation time is achieved by averaging multiple exposures whose time is selected based on the time dependent noise structure of the detector. Moreover, with a priori knowledge of the time dependent noise structure of the spectrometer, this method is easily automatable and can maximize SNR for a spectrum of an unknown compound without any user input.
Abstract:
A method for analyzing the condition of a spectrometer is provided. In one embodiment, the method includes acquiring optical data from a spectrometer of a downhole tool during flushing of a flowline and selecting a data set from the acquired optical data. The method can also include estimating light scattering and optical drift for the spectrometer based on the selected data set and determining impacts of the estimated light scattering and optical drift for the spectrometer on measurement accuracy of a characteristic of a downhole fluid determinable through analysis of the downhole fluid using the spectrometer. Additional methods, systems, and devices are also disclosed.
Abstract:
An approach to noninvasively and remotely detect the presence, location, and/or quantity of a target substance in a scene via a spectral imaging system comprising a spectral filter array and image capture array. For a chosen target substance, a spectral filter array is provided that is sensitive to selected wavelengths characterizing the electromagnetic spectrum of the target substance. Elements of the image capture array are optically aligned with elements of the spectral filter array to simultaneously capture spectrally filtered images. These filtered images identify the spectrum of the target substance. Program instructions analyze the acquired images to compute information about the target substance throughout the scene. A color-coded output image may be displayed on a smartphone or computing device to indicate spatial and quantitative information about the detected target substance. The system desirably includes a library of interchangeable spectral filter arrays, each sensitive to one or more target substances.
Abstract:
The invention relates to an optical sensor device which measures in a spatially resolving manner. In order to devise such a sensor device with which a contacting measurement of the article to be measured can be carried out and which can be mass-produced, the sensor device is designed such that a transfer of the calibration onto individual sensor devices is possible with high accuracy. According to certain embodiments of the design of the sensor device and of the evaluation methods, interferences with the measurement of the amount of the target substance are minimized.