Abstract:
L'invention concerne un dispositif de chauffage pour appareil de mesure par spectrométrie, se caractérisant par le fait qu'il se présente sous la forme d'un article optique souple (1), lequel article comprend un support flexible souple (10) présentant une face supérieure (10a) et une face inférieure (10b), la face supérieure (10a) étant recouverte d'un matériau réfléchissant (11) pour former une couche de réflexion optique, un élément chauffant (13) flexible étant disposé sur au moins une desdites faces du support.
Abstract:
In a method for performing a refractive index based measurement of a property of a fluid such as chemical composition or temperature, a chirp in the local spatial frequency of interference fringes of an interference pattern is reduced by mathematical manipulation of the recorded light intensity in the interference pattern or by the physical positioning and arrangement of a detector used for capturing the interference pattern.
Abstract:
The device (102) for detecting trace gases comprises, in a closed casing (104): an analysis cell (112) equipped with means allowing air samples to enter and exit; a laser light source (106) that emits a laser beam intended for said analysis cell; a main photosensitive sensor (156) positioned to receive the laser beam output from said analysis cell and designed to emit a signal that is representative of the light intensity received by said sensor; and a temperature regulating means (144 to 150) designed to keep at a predefined constant temperature, jointly: the laser light source; the air entering into the analysis cell; an optical bench (118) supporting the cell and the laser light source and; the contents of the closed casing.
Abstract:
Thermally controlled enclosures that can be used with gas analyzers are described. The enclosures incorporate one or more phase changing materials that buffer ambient and internal heat loads to reduce the power consumption demand of mechanical or electronic heating apparatus. Maintenance of gas analyzer equipment at a consistent temperature can be important to achieving stable and reproducible results. Related systems, apparatus, methods, and/or articles are also described.
Abstract:
The present technology relates to a light detection device capable of receiving light from an object to be measured without interference. The light detection device includes a Peltier element configured of a P-type semiconductor and an N-type semiconductor disposed between a first substrate and a second substrate, and a light receiving part configured to receive light from the object having been subjected to temperature modulation by the Peltier element, in which the first substrate is provided on the object side, the second substrate is provided on the light receiving part side, and at least parts of the first substrate and the second substrate are configured to transmit light from the object. The present technology can be applied to, for example, a detection device that detects a predetermined material by receiving and analyzing light from an object to be measured.
Abstract:
A method and system are presented for use in measuring one or more characteristics of patterned structures. The method comprises: performing measurements on a patterned structure by illuminating the structure with exciting light to cause Raman scattering of one or more excited regions of the pattern structure, while applying a controlled change of at least temperature condition of the patterned structure, and detecting the Raman scattering, and generating corresponding measured data indicative of a temperature dependence of the detected Raman scattering; and analyzing the measured data and generating data indicative of spatial profile of one or more properties of the patterned structure.
Abstract:
Disclosed are a system and method for active stabilization of parasitic fringes in optical spectrometers, wherein the spectrometer obtains the transmission spectrum, and a signal processor extracts the etalon drift from the spectral signatures of parasitic fringes. The disclosed approach improves spectrometer accuracy, minimizes drift, and increases time between calibrations.
Abstract:
The present invention is directed to a gas detector configured to improve response speed of a gas sensor. A gas detector includes a housing, a gas sensor main body installed in the housing, and a partition wall provided in the housing and limiting the surrounding of the gas sensor main body to separate from the other area. The housing or the partition wall includes an opening portion directly connected from the outside to an area inside the partition wall.