Abrégé

Methods and systems for predicting signal quality. One analytical instrument support system receives preliminary sample data collected from a short scan of a sample. The analytical instrument support system determines a bright-max intensity level based on preliminary sample data. The analytical instrument support system determines a performance class based on, at least, the bright-max intensity level. The analytical instrument support system determines an intensity-to-time model, the intensity-to-time model includes a plurality of intensity to levels and a plurality of exposure times based on, at least, one or more deviations from an intensity linear model, the one or more deviations associated with the determined performance class. The analytical instrument support apparatus determines a first maximum intensity level based on, at least, a first corresponding exposure time and the intensity-to-time model, or a first parameter exposure time based on, at least, a first corresponding intensity level and the intensity-to-time model.

Abrégé

Methods and systems for predicting signal quality. One analytical instrument support system receives preliminary sample data collected from a short scan of a sample. The analytical instrument support system determines a bright-max intensity level based on preliminary sample data. The analytical instrument support system determines a performance class based on, at least, the bright-max intensity level. The analytical instrument support system determines an intensity-to-time model, the intensity-to-time model includes a plurality of intensity to levels and a plurality of exposure times based on, at least, one or more deviations from an intensity linear model, the one or more deviations associated with the determined performance class. The analytical instrument support apparatus determines a first maximum intensity level based on, at least, a first corresponding exposure time and the intensity-to-time model, or a first parameter exposure time based on, at least, a first corresponding intensity level and the intensity-to-time model.

Classes IPC  ?

• G01J 3/44 - Spectrométrie Raman; Spectrométrie par diffusion
• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives
• G01J 3/28 - Etude du spectre

Abrégé

A sample clamp as well as systems incorporating the sample clamp with a spectrometer and methods of using these systems are described. The sample clamp includes a first jaw connected to a second jaw by a hinge oriented in the direction of a first axis. The sample claim also includes a substantially cylindrical space oriented longitudinally in the direction of the first axis, defined by a first inner surface of the first jaw and a second inner surface of the second jaw, and configured for clamping a cylindrical object therein. Additionally, the sample clamp includes a conduit oriented in the direction of a second axis and optically connecting the cylindrical space to a first outer surface of the first jaw.

Classes IPC  ?

• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives
• G01J 3/44 - Spectrométrie Raman; Spectrométrie par diffusion

Abrégé

A sample clamp as well as systems incorporating the sample clamp with a spectrometer and methods of using these systems are described. The sample clamp includes a first jaw connected to a second jaw by a hinge oriented in the direction of a first axis. The sample claim also includes a substantially cylindrical space oriented longitudinally in the direction of the first axis, defined by a first inner surface of the first jaw and a second inner surface of the second jaw, and configured for clamping a cylindrical object therein. Additionally, the sample clamp includes a conduit oriented in the direction of a second axis and optically connecting the cylindrical space to a first outer surface of the first jaw.

Classes IPC  ?

• G01N 21/01 - Dispositions ou appareils pour faciliter la recherche optique
• G01N 21/65 - Diffusion de Raman
• G01N 21/03 - Dispositions ou appareils pour faciliter la recherche optique - Détails de structure des cuvettes

Abrégé

A holder is described. The holder is for a sample vial and includes a base and a cap, where the holder and cap include one or more materials that are opaque or optically black. The holder includes an interior space for placement of the vial in a light-tight environment, where the holder cap includes an opening for insertion of a probe therethrough and into the sample vial. The disclosure also includes systems and methods using the holder.

Classes IPC  ?

• A61J 1/16 - Supports pour récipients

Abrégé

A holder is described. The holder is for a sample vial and includes a base and a cap, where the holder and cap include one or more materials that are opaque or optically black. The holder includes an interior space for placement of the vial in a light-tight environment, where the holder cap includes an opening for insertion of a probe therethrough and into the sample vial. The disclosure also includes systems and methods using the holder.

Classes IPC  ?

• G01N 21/01 - Dispositions ou appareils pour faciliter la recherche optique
• G01N 21/65 - Diffusion de Raman

Abrégé

Disclosed herein are scientific instrument support systems, as well as related methods, computing devices, and computer-readable media. For example, in some embodiments, a scientific instrument support system may be an autochemometric system that automatically trains machine-learning models with spectroscopy data. The trained models can then be used to identify and/or authenticate the presence of particular substances in a sample under test.

Classes IPC  ?

• G01N 21/65 - Diffusion de Raman

Abrégé

Disclosed herein are scientific instrument support systems, as well as related methods, computing devices, and computer-readable media. For example, in some embodiments, a scientific instrument support system may be an autochemometric system that automatically trains machine-learning models with spectroscopy data. The trained models can then be used to identify and/or authenticate the presence of particular substances in a sample under test.

Classes IPC  ?

• G01N 21/65 - Diffusion de Raman
• G06N 3/08 - Méthodes d'apprentissage

Produits et services

Downloadable computer software for use in providing data compliance services, and for use in chemometric model building

Abrégé

A modular accessory for orienting a light path at different angles to an optical axis of a spectrometer is described. The modular accessory includes an attachment module configured to couple to a Raman spectrometer. The attachment module attaches to a base module which includes a visible light imager. An objective module couples to the base module and includes an objective configured to provide an optical path for the sample light beam travelling from a sample along a light path to an objective lens of the objective, through the objective, and to the input for the sample light beam of the base module. The modules can provide tilt and swivel angles to orient the light path at different angles. Portable Raman systems including the modular accessory and a Raman spectrometer are also described as well as methods for using the systems.

Classes IPC  ?

• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives
• G01J 3/44 - Spectrométrie Raman; Spectrométrie par diffusion
• G01N 21/65 - Diffusion de Raman

Abrégé

A personal radiation and density meter system includes a housing, a radiation detection subsystem and a radiation emitting sub-system. The housing includes an interior portion configured as an interior space, and a slot. The radiation detection sub-system includes a personal radiation dosimeter positioned in the slot. The radiation emitting sub-system includes a shield assembly, a source, an actuator, a trigger, and an aperture.

Classes IPC  ?

• G01N 9/00 - Recherche du poids spécifique ou de la densité des matériaux; Analyse des matériaux en déterminant le poids spécifique ou la densité
• G01T 1/02 - Dosimètres
• G01T 7/12 - Dispositions pour actionner un signal d'alarme

Abrégé

Provided are systems and methods for dynamically tracking radiation exposure and dose history. Various methods and embodiments can be implemented on dosimeters, wearable devices, and radiation measurement systems. In accordance with embodiments, the present invention can include a sensor configured to measure a radiation level, at least one memory storing dosage rates, and a processor in communication with the memory and the sensor. The processor can be configured to at least: determine a dosage rate based on a plurality of radiation level measurements taken over a period of time; determine a sample frequency based on a function of the dosage rate; continuously measure the radiation levels using the sample frequency and update the dosage rate; and dynamically adjust the sample frequency based on the updated dosage rate.

Classes IPC  ?

• G01T 1/02 - Dosimètres

Abrégé

Provided are systems and methods for dynamically tracking radiation exposure and dose history. Various methods and embodiments can be implemented on dosimeters, wearable devices, and radiation measurement systems. In accordance with embodiments, the present invention can include a sensor configured to measure a radiation level, at least one memory storing dosage rates, and a processor in communication with the memory and the sensor. The processor can be configured to at least: determine a dosage rate based on a plurality of radiation level measurements taken over a period of time; determine a sample frequency based on a function of the dosage rate; continuously measure the radiation levels using the sample frequency and update the dosage rate; and dynamically adjust the sample frequency based on the updated dosage rate.

Classes IPC  ?

• G01T 1/02 - Dosimètres

Abrégé

Provided are systems and methods for dynamically tracking radiation exposure and dose history. Various methods and embodiments can be implemented on dosimeters, wearable devices, and radiation measurement systems. In accordance with embodiments, the present invention can include a sensor configured to measure a radiation level, at least one memory storing dosage rates, and a processor in communication with the memory and the sensor. The processor can be configured to at least: determine a dosage rate based on a plurality of radiation level measurements taken over a period of time; determine a sample frequency based on a function of the dosage rate; continuously measure the radiation levels using the sample frequency and update the dosage rate; and dynamically adjust the sample frequency based on the updated dosage rate.

Classes IPC  ?

• G01T 1/02 - Dosimètres

Produits et services

Laboratory instrument, namely, a raman spectrometer.

Produits et services

Laboratory instrument, namely, a raman spectrometer

Produits et services

Laboratory instrument, namely, a dosimeter.

Abrégé

An embodiment of a system is described that comprises a light source configured to produce a light beam; a collimating lens disposed on a movable mount, wherein the collimating lens is configured to capture the light beam and produce a substantially collimated beam; and an aspheric diffuse ring optic configured to receive the collimated beam and produce a spot on a surface that comprises a non-uniform radial intensity distribution.

Classes IPC  ?

• G01N 21/65 - Diffusion de Raman
• G02B 7/10 - Montures, moyens de réglage ou raccords étanches à la lumière pour éléments optiques pour lentilles avec mécanisme de mise au point ou pour faire varier le grossissement par déplacement axial relatif de plusieurs lentilles, p.ex. lentilles d'objectif à distance focale variable
• G02B 27/09 - Mise en forme du faisceau, p.ex. changement de la section transversale, non prévue ailleurs
• G02B 27/30 - Collimateurs

Abrégé

An embodiment of a system is described that comprises a light source configured to produce a light beam; a collimating lens disposed on a movable mount, wherein the collimating lens is configured to capture the light beam and produce a substantially collimated beam; and an aspheric diffuse ring optic configured to receive the collimated beam and produce a spot on a surface that comprises a non-uniform radial intensity distribution.

Classes IPC  ?

• G02B 27/00 - Systèmes ou appareils optiques non prévus dans aucun des groupes ,
• G02B 27/09 - Mise en forme du faisceau, p.ex. changement de la section transversale, non prévue ailleurs
• G02B 7/02 - Montures, moyens de réglage ou raccords étanches à la lumière pour éléments optiques pour lentilles

Abrégé

A pot core transformer assembly includes a multiplier comprising a pair of single layer capacitors connected by a pair of high voltage diodes. A pot core transformer is connected in series with the multiplier, and includes a first core half having a first projection, and a second core half having a second projection spaced from the first projection by a first gap. A primary winding is wrapped about the first projection, and a secondary winding wrapped about the second projection. A magnetic shunt is positioned between the first core half and the second core half, and includes a central aperture receiving a portion of the first projection and a portion of the second projection. A second gap is formed between an outer peripheral surface of the magnetic shunt and an interior surface of the first core half and an interior surface of the second core half.

Classes IPC  ?

• H01F 17/04 - Inductances fixes du type pour signaux avec noyau magnétique
• H05G 1/10 - Dispositions de l'alimentation en énergie pour alimenter le tube radiogène à rayons X
• H05G 1/20 - Dispositions de l'alimentation en énergie pour alimenter le tube radiogène à rayons X avec des trains d'impulsions
• H05G 1/32 - Commande de la tension d'alimentation de l'appareil ou du tube à rayons X

Abrégé

Devices and methods are disclosed for identifying compounds using spectra generated by X-rays at two different voltage levels.

Classes IPC  ?

• G01N 23/223 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en mesurant l'émission secondaire de matériaux en irradiant l'échantillon avec des rayons X ou des rayons gamma et en mesurant la fluorescence X

Abrégé

Devices and methods are disclosed for identifying compounds using spectra generated by X-rays at two different voltage levels.

Classes IPC  ?

• G01N 15/02 - Recherche de la dimension ou de la distribution des dimensions des particules
• G01N 23/223 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en mesurant l'émission secondaire de matériaux en irradiant l'échantillon avec des rayons X ou des rayons gamma et en mesurant la fluorescence X
• G01N 23/207 - Diffractométrie, p.ex. en utilisant une sonde en position centrale et un ou plusieurs détecteurs déplaçables en positions circonférentielles

Produits et services

Laboratory instrument, namely, a dosimeter

Abrégé

An embodiment of a laser induced breakdown system is described that comprises a portable device that includes: a laser configured to produce a beam comprising a plurality of repeating pulses; a processor configured to open a data acquisition window after a delay period, wherein the delay period begins upon production of one of the pulses; one or more optical elements configured to direct the beam at a sample and collect emitted light from a plasma continuum; and an optical detector configured to produce a plurality of signal values from the emitted light from the plasma continuum collected during the data acquisition window, wherein the processor is configured to identify an element from the signal values.

Classes IPC  ?

• G01N 21/71 - Systèmes dans lesquels le matériau analysé est excité de façon à ce qu'il émette de la lumière ou qu'il produise un changement de la longueur d'onde de la lumière incidente excité thermiquement
• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives
• G01J 3/10 - Aménagements de sources lumineuses spécialement adaptées à la spectrométrie ou à la colorimétrie
• G01J 3/443 - Spectrométrie par émission

Produits et services

Laboratory apparatus, namely, an x-ray fluorescent analyzer; downloadable computer software for utilizing x-ray fluorescent technology to analyze raw materials

Produits et services

Downloadable mobile application for transmitting data regarding situational awareness to be used in connection with a handheld radiation monitor used by public safety and security organizations

Abrégé

In the operation of analytical devices, and particularly laser induced breakdown spectroscopy (LIBS) devices, a number of advantages may be obtained by the use of complementary safety mechanisms, such as those that govern the operation or firing of a laser. Such complementary safety mechanisms, compared to the individual safety mechanisms acting alone, prevent operation of the laser under a greater number of unsafe circumstances (even if one or more detected conditions are safe, based on not activating the associated safety mechanism) and permits operation under a greater number of safe circumstances (even if one or more detected conditions are unsafe, based on activating the associated safety mechanism).

Classes IPC  ?

• G01J 3/10 - Aménagements de sources lumineuses spécialement adaptées à la spectrométrie ou à la colorimétrie
• G01J 3/443 - Spectrométrie par émission
• G01N 21/71 - Systèmes dans lesquels le matériau analysé est excité de façon à ce qu'il émette de la lumière ou qu'il produise un changement de la longueur d'onde de la lumière incidente excité thermiquement
• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives

Abrégé

In the operation of analytical devices, and particularly laser induced breakdown spectroscopy (LIBS) devices, a number of advantages may be obtained by the use of complementary safety mechanisms, such as those that govern the operation or firing of a laser. Such complementary safety mechanisms, compared to the individual safety mechanisms acting alone, prevent operation of the laser under a greater number of unsafe circumstances (even if one or more detected conditions are safe, based on not activating the associated safety mechanism) and permits operation under a greater number of safe circumstances (even if one or more detected conditions are unsafe, based on activating the associated safety mechanism).

Classes IPC  ?

• G01N 21/01 - Dispositions ou appareils pour faciliter la recherche optique
• G01N 21/71 - Systèmes dans lesquels le matériau analysé est excité de façon à ce qu'il émette de la lumière ou qu'il produise un changement de la longueur d'onde de la lumière incidente excité thermiquement
• G01J 3/10 - Aménagements de sources lumineuses spécialement adaptées à la spectrométrie ou à la colorimétrie
• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives
• G01J 3/443 - Spectrométrie par émission

Abrégé

An embodiment of an X-ray tube is described that comprises an outer cylinder; a window positioned on an end of the outer cylinder; an electron gun comprising an emission orifice, wherein the electron gun is coupled to a side of the outer cylinder at an angle that orients the emission orifice toward the window; and a rod centrally positioned within the outer cylinder, wherein the rod comprises a concave geometry at a distal end proximal to the electron gun and a target surface configured at an angle that orients the target surface towards the emission orifice, wherein the concave geometry is configured to position the target surface to have a focal spot size of an electron beam from the emission orifice in range of about 2-6 μm.

Classes IPC  ?

• H01J 35/18 - Fenêtres
• H01J 35/08 - Anodes; Anticathodes

Abrégé

Devices and methods are disclosed that allow for analysis with simplified sample preparation. Of particular relevance is the analysis of wire samples (e.g., weld wires) using laser induced breakdown spectroscopy (LIBS) or optical emission spectrometry (OES). Representative devices can isolate a sample, such as in a sealed, inert environment in an analytical instrument. These devices may include first and second sample end attachments connected to a body, which has a connecting portion that may be configured for alignment with the face of the instrument. The body may also include a rotatable cap, and the sample end attachments may be joined to this cap (e.g., at opposite ends thereof) to allow adjustment of the angular position of the sample, relative to the connecting portion, which in use may be affixed to the instrument.

Classes IPC  ?

• G01N 21/71 - Systèmes dans lesquels le matériau analysé est excité de façon à ce qu'il émette de la lumière ou qu'il produise un changement de la longueur d'onde de la lumière incidente excité thermiquement
• G01N 21/13 - Transport des cuvettes ou des échantillons solides vers ou à partir de l'emplacement de recherche
• G01N 21/67 - Systèmes dans lesquels le matériau analysé est excité de façon à ce qu'il émette de la lumière ou qu'il produise un changement de la longueur d'onde de la lumière incidente excité électriquement, p.ex. par électroluminescence en utilisant des arcs électriques ou des décharges électriques
• G01J 3/443 - Spectrométrie par émission

Produits et services

Portable spectroscopic instruments using light sources and light detectors for detecting and identifying chemical substances; portable spectroscopic instruments using light sources and light detectors for detecting and identifying biological substances.

Abrégé

An embodiment of a device for producing x-rays is described that comprises an x-ray tube and a high-voltage power supply electrically coupled to the x-ray tube, where the high-voltage power supply comprises a first stack of D shaped capacitors arranged in an opposed relationship with a second stack of D shaped capacitors.

Classes IPC  ?

• H05G 1/10 - Dispositions de l'alimentation en énergie pour alimenter le tube radiogène à rayons X
• H05G 1/02 - Appareils à rayons X utilisant des tubes à rayons X; Circuits pour ces appareils - Détails de structure
• G01N 23/223 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en mesurant l'émission secondaire de matériaux en irradiant l'échantillon avec des rayons X ou des rayons gamma et en mesurant la fluorescence X
• H02M 7/10 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge sans électrode de commande ou des dispositifs à semi-conducteurs sans éléctrode de commande agencés pour la marche en série, p.ex. pour la multiplication de tension
• H05G 1/12 - Dispositions de l'alimentation en énergie pour alimenter le tube radiogène à rayons X avec du courant continu ou du courant alternatif redressé
• H05G 1/06 - Tube à rayons X et au moins une partie de l'appareil d'alimentation de puissance montés à l'intérieur de la même gaine

Abrégé

A spectrometer system comprising a housing configured as a handheld device with a screen; a source of narrow band illumination; a sensor that detects Raman scattering signals; a source of wide band illumination; an optical element that detect Fourier transform infrared (FTIR) signals; a memory device comprising a library of information with Raman scattering reference information and FTIR reference information; and a processor configured to execute software instructions, wherein the software instructions are configured to: direct the narrow band illumination to the sample; detect the Raman scattering signals; direct the wide band illumination to the sample; detect the FTIR signals; determine a composition of the sample from a similarity between the Raman scattering spectral information and the Raman scattering reference information, and from a similarity between the FTIR spectral information and the FTIR reference information; and display the composition of the sample on the screen.

Classes IPC  ?

• G01N 21/00 - Recherche ou analyse des matériaux par l'utilisation de moyens optiques, c. à d. en utilisant des ondes submillimétriques, de la lumière infrarouge, visible ou ultraviolette
• G01J 3/44 - Spectrométrie Raman; Spectrométrie par diffusion
• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives
• G01N 21/65 - Diffusion de Raman
• G01N 21/35 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique en utilisant la lumière infrarouge
• G01J 3/453 - Spectrométrie par interférence par corrélation des amplitudes
• G01J 3/45 - Spectrométrie par interférence
• G01J 3/28 - Etude du spectre

Abrégé

A hand-held spectrometer includes at least one indicator light and a processor configured to control the at least one indicator light to indicate a state of the hand-held spectrometer selected from a group consisting of a background scanning state, a ready-to-scan-sample state, a signal strength state, a fluorescence intensity state, a sample match state, a sample classification state, an error state, a data transfer state, a battery charge state, and a memory capacity state. The sample match state can be, for example, one of a positive match state, a mixture match state, a negative match state, and a match error state. In some embodiments, the error state can be at least one of a background error state, a user error state, and an instrument error state, or any combination thereof.

Classes IPC  ?

• G01J 3/12 - Production du spectre; Monochromateurs
• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives
• G01J 3/42 - Spectrométrie d'absorption; Spectrométrie à double faisceau; Spectrométrie par scintillement; Spectrométrie par réflexion
• G01J 3/44 - Spectrométrie Raman; Spectrométrie par diffusion
• G01N 21/552 - Réflexion totale atténuée
• G01J 3/28 - Etude du spectre
• G01J 3/10 - Aménagements de sources lumineuses spécialement adaptées à la spectrométrie ou à la colorimétrie
• G01N 21/65 - Diffusion de Raman
• G01N 21/71 - Systèmes dans lesquels le matériau analysé est excité de façon à ce qu'il émette de la lumière ou qu'il produise un changement de la longueur d'onde de la lumière incidente excité thermiquement
• G01N 21/35 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique en utilisant la lumière infrarouge
• G01N 21/39 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique en utilisant des lasers à longueur d'onde réglable
• G01N 21/359 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique en utilisant la lumière infrarouge en utilisant la lumière de l'infrarouge proche

Abrégé

The embodiments of the present invention are directed to applying intimate contact pressures to samples while undergoing ATR infrared interrogation. As a general mode of operation, after a solid sample is placed on the ATR element, a force actuator moves an anvil arm to apply a contact force to the sample against the ATR. Thereafter, when the scan is over, the user can see the result of the one or more scans. The force actuator may be a motor or a solenoid or other type of force actuator. The applied contact force may be a fixed force or may be a user-selectable force or may be automatically controlled through feedback from the spectrometer based on the spectroscopic signature of the sample material.

Classes IPC  ?

• G01J 5/02 - Pyrométrie des radiations, p.ex. thermométrie infrarouge ou optique - Détails structurels
• G01N 21/552 - Réflexion totale atténuée
• G01N 21/3563 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique en utilisant la lumière infrarouge pour l'analyse de solides; Préparation des échantillons à cet effet
• G02B 21/26 - Platines; Moyens de réglage pour celles-ci
• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives

Abrégé

An apparatus (100) for laser induced breakdown spectroscopy (LIBS), comprising a sample chamber (112), a laser source (115) connected to an excitation optics assembly (120), the excitation optics assembly (120) connected to a first port (132) on the sample chamber (112), a collimator assembly (125) connected to a spectrometer (130), the collimator assembly (125) connect to a second port (135) on the sample chamber (112), and a first lens tube (150) positioned on the first port (132) and a second lens tube (155) positioned on the second port (135), the first lens tube (150) protecting the first port (132) connected to the excitation optics assembly (120) and the second lens tube (155) protecting the second port (135) connected to the collimator assembly (125) from particles emitted when a laser pulse from the laser source (115) ablates a surface of a target sample (145) and generates a plasma. The protection can alternatively be provided by a transparent partition (260) positioned between the first port (132) and the target sample (145).

Classes IPC  ?

• G01N 21/15 - Prévention de la souillure des éléments du système optique ou de l'obstruction du chemin lumineux
• G01N 21/71 - Systèmes dans lesquels le matériau analysé est excité de façon à ce qu'il émette de la lumière ou qu'il produise un changement de la longueur d'onde de la lumière incidente excité thermiquement

Abrégé

An apparatus (100) for laser induced breakdown spectroscopy (LIBS), comprising a sample chamber (112), a laser source (115) connected to an excitation optics assembly (120), the excitation optics assembly (120) connected to a first port (132) on the sample chamber (112), a collimator assembly (125) connected to a spectrometer (130), the collimator assembly (125) connect to a second port (135) on the sample chamber (112), and a first lens tube (150) positioned on the first port (132) and a second lens tube (155) positioned on the second port (135), the first lens tube (150) protecting the first port (132) connected to the excitation optics assembly (120) and the second lens tube (155) protecting the second port (135) connected to the collimator assembly (125) from particles emitted when a laser pulse from the laser source (115) ablates a surface of a target sample (145) and generates a plasma. The protection can alternatively be provided by a transparent partition (260) positioned between the first port (132) and the target sample (145).

Classes IPC  ?

• G01N 21/15 - Prévention de la souillure des éléments du système optique ou de l'obstruction du chemin lumineux
• G01N 21/71 - Systèmes dans lesquels le matériau analysé est excité de façon à ce qu'il émette de la lumière ou qu'il produise un changement de la longueur d'onde de la lumière incidente excité thermiquement

Abrégé

Methods and apparatus for laser induced breakdown spectroscopy (LIBS) sample chamber. An apparatus includes a sample chamber, a laser source connected to an excitation optics assembly, the excitation optics assembly connected to a first port on the sample chamber, a collimator assembly connected to a spectrometer, the collimator assembly connected to a second port on the sample chamber, and a first lens tube positioned on the first port and a second lens tube positioned on the second port, the first lens tube protecting the first port connected to the excitation optics assembly and the second lens tube protecting the second port connected to the collimator assembly from particles emitted when a laser pulse from the laser source ablates a surface of a target sample and generates a plasma.

Classes IPC  ?

• G01J 3/30 - Mesure de l'intensité des raies spectrales directement sur le spectre lui-même
• G01J 3/443 - Spectrométrie par émission
• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives
• G01N 21/15 - Prévention de la souillure des éléments du système optique ou de l'obstruction du chemin lumineux
• G01N 21/71 - Systèmes dans lesquels le matériau analysé est excité de façon à ce qu'il émette de la lumière ou qu'il produise un changement de la longueur d'onde de la lumière incidente excité thermiquement

Abrégé

An apparatus (10) includes a single laser source (20) configurable to produce laser pulses (35) directable towards a target substance (30), a focusing lens (25) optically positionable between the single laser source (20) and the target substance (30), the focusing lens (25) focusing a first laser pulse (35) to ablate at least a portion of the target substance (30) when in a first focusing lens position to generate a plasma plume, the plume emitting atomic emission lines characteristic of elements including the target substance, the focusing lens (25) focusing a second laser pulse (35) in the target substance (30) when in a second focusing lens position, resulting in Raman scattering, a collection optics assembly (45) to detect signals representing the atomic emission lines characteristic of the target substance (30) and the Raman scattering, and a spectrometer (40) to detect signals received from the collection optics assembly (45).

Classes IPC  ?

• G01N 21/65 - Diffusion de Raman
• G01N 21/71 - Systèmes dans lesquels le matériau analysé est excité de façon à ce qu'il émette de la lumière ou qu'il produise un changement de la longueur d'onde de la lumière incidente excité thermiquement
• G01J 3/44 - Spectrométrie Raman; Spectrométrie par diffusion
• G01J 3/443 - Spectrométrie par émission

Abrégé

A device for producing x-rays includes: a housing that includes a folded high-voltage multiplier coupled to a filament transformer, the transformer coupled to an x-ray tube for producing the x-rays. A method of fabrication and an x-ray source are disclosed.

Classes IPC  ?

• H05G 1/10 - Dispositions de l'alimentation en énergie pour alimenter le tube radiogène à rayons X
• H05G 1/08 - Appareils à rayons X utilisant des tubes à rayons X; Circuits pour ces appareils - Détails électriques
• H05G 1/02 - Appareils à rayons X utilisant des tubes à rayons X; Circuits pour ces appareils - Détails de structure
• H01J 35/16 - Enceintes; Récipients; Blindages associés
• G21G 4/08 - Sources radioactives autres que les sources de neutrons caractérisées par des aspects de leur structure spécialement adaptées aux applications médicales
• H02M 7/25 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs agencés pour la marche en série, p.ex. pour la multiplication de la tension
• H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu; Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
• H02M 3/28 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire
• H01J 35/02 - Tubes à rayons X - Détails
• H02M 7/10 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge sans électrode de commande ou des dispositifs à semi-conducteurs sans éléctrode de commande agencés pour la marche en série, p.ex. pour la multiplication de tension
• H05G 1/06 - Tube à rayons X et au moins une partie de l'appareil d'alimentation de puissance montés à l'intérieur de la même gaine
• H05G 1/12 - Dispositions de l'alimentation en énergie pour alimenter le tube radiogène à rayons X avec du courant continu ou du courant alternatif redressé

Abrégé

A method of identifying the presence of heroin in an impure heroin composition which contains heroin and at least one fluorescent contaminant which interferes with a Raman signal from the heroin. The method may include contacting the mixture with a solvent such as an alcohol, then contacting the resulting alcohol composition with a SERS surface. The surface may then be exposed to laser light from a hand-held Raman spectrometer to detect a Raman signal from the heroin. An apparatus for performing the method is also provided.

Classes IPC  ?

• G01J 3/44 - Spectrométrie Raman; Spectrométrie par diffusion
• G01N 21/65 - Diffusion de Raman
• G01N 21/94 - Recherche de souillures, p.ex. de poussières
• G01N 33/94 - Analyse chimique de matériau biologique, p.ex. de sang ou d'urine; Test par des méthodes faisant intervenir la formation de liaisons biospécifiques par ligands; Test immunologique faisant intervenir des narcotiques
• G01N 21/84 - Systèmes spécialement adaptés à des applications particulières
• G01N 21/64 - Fluorescence; Phosphorescence

Produits et services

Software for analyzing raw data from spectroscopic instruments to compute and display quantitative information about the presence of particular chemical substances.

Abrégé

Featured is a method for reducing frequency of taking background spectra in FTIR or FTIR-ATR spectroscopy. Such a method includes determining if there is a pre-existing reference spectrum available and if such a reference spectrum is available, acquiring a present reference scan before acquiring a sample scan. The method also includes comparing the present reference scan with the pre-existing reference spectrum to determine if there is one or more non-conformities therebetween and if there is/are one or more nonconformities, determining if the one or more non-conformities are resolvable or not. If the one or more non-conformities are resolvable; resolve each non-conformity in a determined manner and thereafter acquiring a scan of the sample, and if the non¬ conformities are not resolvable, then acquiring a new reference sample and thereafter acquiring a scan of the sample.

Classes IPC  ?

• G01J 3/45 - Spectrométrie par interférence
• G01N 21/15 - Prévention de la souillure des éléments du système optique ou de l'obstruction du chemin lumineux
• G01N 21/359 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique en utilisant la lumière infrarouge en utilisant la lumière de l'infrarouge proche
• G01N 21/552 - Réflexion totale atténuée

Abrégé

A spectrometer configurable for field analyses of chemical properties of a material is provided. The spectrometer includes: at least one sensor adapted for providing Fourier transform infrared spectroscopy (FTIR) surveillance and at least another sensor for providing Raman spectroscopy surveillance. The spectrometer can be provided with a user accessible instruction set for modifying a sampling configuration of the spectrometer. A method of determining the most likely composition of a sample by at least two technologies using the spectrometer is also provided.

Classes IPC  ?

• G01N 21/00 - Recherche ou analyse des matériaux par l'utilisation de moyens optiques, c. à d. en utilisant des ondes submillimétriques, de la lumière infrarouge, visible ou ultraviolette
• G01J 3/44 - Spectrométrie Raman; Spectrométrie par diffusion
• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives
• G01J 3/28 - Etude du spectre
• G01J 3/45 - Spectrométrie par interférence
• G01N 21/35 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique en utilisant la lumière infrarouge
• G01N 21/65 - Diffusion de Raman
• G01J 3/453 - Spectrométrie par interférence par corrélation des amplitudes

Produits et services

(1) Software for analyzing raw data from spectroscopic instruments to compute and display quantitative information about the presence of particular chemical substances.

Abrégé

Featured is a method for reducing frequency of taking background spectra in FTIR or FTIR-ATR spectroscopy. Such a method includes determining if there is a pre-existing reference spectrum available and if such a reference spectrum is available, acquiring a present reference scan before acquiring a sample scan. The method also includes comparing the present reference scan with the pre-existing reference spectrum to determine if there is one or more non-conformities therebetween and if there is/are one or more nonconformities, determining if the one or more non-conformities are resolvable or not. If the one or more non-conformities are resolvable; resolve each non-conformity in a determined manner and thereafter acquiring a scan of the sample, and if the non-conformities are not resolvable, then acquiring a new reference sample and thereafter acquiring a scan of the sample.

Classes IPC  ?

• G01N 21/35 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique en utilisant la lumière infrarouge
• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives

Abrégé

a hand-held spectrometer (100) includes at least one indicator light (170) and a processor configured to control the at least one indicator light (170) to indicate a state of the hand-held spectrometer selected from a group consisting of a background scanning state, a ready-to- scan-sample state, a signal strength state, a fluorescence intensity state, a sample match state, a sample classification state, an error state, a data transfer state, a battery charge state, and a memory capacity state. The sample match state can be, for example, one of a positive match state, a mixture match state, a negative match state, and a match error state. In some embodiments, the error state can be at least one of a background error state, a user error state, and an instrument error state, or any combination thereof.

Classes IPC  ?

• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives

Abrégé

A spectrometer configurable for field analyses of chemical properties of a material is provided. The spectrometer includes: at least one sensor adapted for providing Fourier transform infrared spectroscopy (FTIR) surveillance and at least another sensor for providing Raman spectroscopy surveillance. The spectrometer can be provided with a user accessible instruction set for modifying a sampling configuration of the spectrometer. A method of determining the most likely composition of a sample by at least two technologies using the spectrometer is also provided.

Classes IPC  ?

• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives
• G01J 3/28 - Etude du spectre
• G01J 3/44 - Spectrométrie Raman; Spectrométrie par diffusion
• G01J 3/45 - Spectrométrie par interférence

Produits et services

Software for analyzing raw data from spectroscopic instruments to compute and display quantitative information about the presence of particular chemical substances

Abrégé

A method of detecting an explosive material, and an analyzer (100) and computer program products that may perform such methods. A method may include illuminating at least a portion of the material with light (200), and monitoring the temperature of the illuminated portion (210, 220a, 230a, 330). The power or location of the illuminating light may be altered (240, 340) in response to the monitored temperature. Raman spectral data are produced (250, 300) in response to Raman radiation emitted from the portion in response to the light. The composition of the material may be analyzed (250, 360) based on the Raman spectral data or generating an indication to an operator that the material cannot be safely analyzed (230a).

Classes IPC  ?

• G01N 21/65 - Diffusion de Raman

Abrégé

A Raman spectrometer including a laser excitation source, edge filters, and detection optics that direct light into a spectrograph. A spectrograph containing a dispersive element and optics that directs various wavelengths of light onto a segmented diffractive MEMS light modulator array. The MEMS array, depending on actuation state, directs light either to or away from a single detector. Control electronics drive the MEMS light modulator for either sequential wavelength measurement or multiplexed wavelength measurement (Hadamard for example).

Classes IPC  ?

• G01J 3/44 - Spectrométrie Raman; Spectrométrie par diffusion
• G01J 3/32 - Mesure de l'intensité des raies spectrales directement sur le spectre lui-même en étudiant des bandes d'un spectre successivement à l'aide d'un détecteur unique
• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives
• G01N 21/65 - Diffusion de Raman

Abrégé

A method of detecting an explosive material, and an analyzer and computer program products that may perform such methods. A method may include illuminating at least a portion of the material with light, and monitoring the temperature of the illuminated portion. T power or location of the illuminating light may be altered in response to the monitored temperature. Raman spectral data are produced in response to Raman radiation emitted from the portion in response to the light. The composition of the material may be analyzed based on the Raman spectral data or generating an indication to an operator that the material cannot be safely analyzed.

Classes IPC  ?

• G01N 33/22 - Combustibles; Explosifs
• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives
• G01N 21/65 - Diffusion de Raman

Abrégé

In an embodiment, an apparatus may include a light source, a beam manipulator, an optical component, an analyzer, and a detector. The light source may generate an incident light at a first frequency. The beam manipulator may include one or more polyhedron- shaped prisms that may deflect the incident light for focus at a plurality of points on a sample. The optical component may collect the deflected incident light, focus the collected deflected incident light at the plurality of points on the sample, and collect scattered light from the sample. The scattered light may include elastic scattered light and/or inelastic scattered light. The inelastic scattered light may have a second frequency that is shifted up or down from the first frequency. The detector may detect the inelastic scattered light and the analyzer may identify a substance contained in the sample based on the detected inelastic scattered light.

Classes IPC  ?

• G01N 21/65 - Diffusion de Raman

Abrégé

In an embodiment, an apparatus may include a light source, a beam manipulator, an optical component, an analyzer, and a detector. The light source may generate an incident light at a first frequency. The beam manipulator may include one or more polyhedron-shaped prisms that may deflect the incident light for focus at a plurality of points on a sample. The optical component may collect the deflected incident light, focus the collected deflected incident light at the plurality of points on the sample, and collect scattered light from the sample. The scattered light may include elastic scattered light and/or inelastic scattered light. The inelastic scattered light may have a second frequency that is shifted up or down from the first frequency. The detector may detect the inelastic scattered light and the analyzer may identify a substance contained in the sample based on the detected inelastic scattered light.

Classes IPC  ?

• G01J 3/44 - Spectrométrie Raman; Spectrométrie par diffusion
• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives
• G01N 21/65 - Diffusion de Raman

Abrégé

Disclosed are apparatus, kits, methods, and systems that include a radiation source configured to direct radiation to a sample; a detector configured to measure radiation from the sample; an electronic processor configured to determine information about the sample based on the measured radiation; a housing enclosing the source, the detector, and the electronic processor, the housing having a hand-held form factor; an arm configured to maintain a separation between the sample and the housing, the arm including a first end configured to connect to the housing and a second end configured to contact the sample; and a layer positioned on the second end of the arm, the layer being configured to contact the sample and to transmit at least a portion of the radiation from the sample to the detector.

Classes IPC  ?

• G01N 21/17 - Systèmes dans lesquels la lumière incidente est modifiée suivant les propriétés du matériau examiné
• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives
• G01J 3/44 - Spectrométrie Raman; Spectrométrie par diffusion
• G01N 21/47 - Dispersion, c. à d. réflexion diffuse
• G01N 21/65 - Diffusion de Raman
• G01J 3/42 - Spectrométrie d'absorption; Spectrométrie à double faisceau; Spectrométrie par scintillement; Spectrométrie par réflexion
• G01N 21/55 - Réflexion spéculaire
• G01N 21/59 - Transmissivité
• G01N 21/35 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique en utilisant la lumière infrarouge

Abrégé

A side-looking optical probe for a Raman spectroscopy system is provided. The probe includes: a base for mounting the probe to an optical assembly of the system; and a prism mounted to the base, the prism configured for receiving signal light from a sample and providing the signal light to the system. A method of fabrication and a spectrometer are provided.

Classes IPC  ?

• G01N 21/65 - Diffusion de Raman
• G01J 3/44 - Spectrométrie Raman; Spectrométrie par diffusion
• G02B 6/36 - Moyens de couplage mécaniques
• G02B 6/38 - Moyens de couplage mécaniques ayant des moyens d'assemblage fibre à fibre
• G02B 6/00 - OPTIQUE ÉLÉMENTS, SYSTÈMES OU APPAREILS OPTIQUES - Détails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p.ex. des moyens de couplage

Abrégé

The embodiments of the present invention are directed to applying intimate contact pressures to samples while undergoing ATR infrared interrogation. As a general mode of operation, after a solid sample is placed on the ATR element, a force actuator moves an anvil arm to apply a contact force to the sample against the ATR. Thereafter, when the scan is over, the user can see the result of the one or more scans. The force actuator may be a motor or a solenoid or other type of force actuator. The applied contact force may be a fixed force or may be a user-selectable force or may be automatically controlled through feedback from the spectrometer based on the spectroscopic signature of the sample material.

Classes IPC  ?

• G01N 21/55 - Réflexion spéculaire

Abrégé

A device for producing x-rays includes: a housing (101) that includes a folded high-voltage multiplier (104) coupled to a filament transformer (108), the transformer coupled to an x-ray tube (106) for producing the x-rays. A method of fabrication and an x-ray source are disclosed.

Classes IPC  ?

• H01J 35/02 - Tubes à rayons X - Détails
• H05G 1/06 - Tube à rayons X et au moins une partie de l'appareil d'alimentation de puissance montés à l'intérieur de la même gaine
• H02M 7/10 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge sans électrode de commande ou des dispositifs à semi-conducteurs sans éléctrode de commande agencés pour la marche en série, p.ex. pour la multiplication de tension
• H05G 1/12 - Dispositions de l'alimentation en énergie pour alimenter le tube radiogène à rayons X avec du courant continu ou du courant alternatif redressé

Abrégé

A device for producing x-rays includes: a housing that includes a folded high- voltage multiplier coupled to a filament transformer, the transformer coupled to an x-ray tube for producing the x-rays. A method of fabrication and an x-ray source are disclosed.

Classes IPC  ?

• H01J 35/02 - Tubes à rayons X - Détails
• H01J 9/00 - Appareils ou procédés spécialement adaptés à la fabrication de tubes à décharge électrique, de lampes à décharge électrique ou de leurs composants; Récupération de matériaux à partir de tubes ou de lampes à décharge
• H02M 7/10 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge sans électrode de commande ou des dispositifs à semi-conducteurs sans éléctrode de commande agencés pour la marche en série, p.ex. pour la multiplication de tension
• H05G 1/06 - Tube à rayons X et au moins une partie de l'appareil d'alimentation de puissance montés à l'intérieur de la même gaine
• H05G 1/10 - Dispositions de l'alimentation en énergie pour alimenter le tube radiogène à rayons X
• H05G 1/12 - Dispositions de l'alimentation en énergie pour alimenter le tube radiogène à rayons X avec du courant continu ou du courant alternatif redressé

Abrégé

In one embodiment, a protective shield for a spectrometer is provided. The shield includes a body configured to substantially protect a front of the spectrometer, the body including an aperture that includes a protective mesh. The protective mesh includes a high-strength, low-Z material, such as an arrangement of carbon fibers. A method of fabrication, a spectrometer and a method of using the spectrometer are disclosed.

Classes IPC  ?

• G01N 23/223 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en mesurant l'émission secondaire de matériaux en irradiant l'échantillon avec des rayons X ou des rayons gamma et en mesurant la fluorescence X

Abrégé

A spectrometer includes: a collimating element configured for collimating a beam of light into a first one of a cross-dispersing element and an echelle grating, the grating in optical communication with the cross-dispersing element; a focusing element for receiving the light from a second one of the cross-dispersing element and the echelle grating and focusing wavelengths of the light onto a spatial light modulator; the spatial light modulator configured for selectively directing the wavelengths onto a detector for detection. A method of use and the method of fabrication are provided.

Classes IPC  ?

• G01J 3/28 - Etude du spectre
• G01J 3/18 - Production du spectre; Monochromateurs en utilisant des éléments diffractants, p.ex. réseaux
• G01J 3/44 - Spectrométrie Raman; Spectrométrie par diffusion
• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives

Abrégé

A spectrometer includes: a collimating element configured for collimating a beam of light into a first one of a cross-dispersing element and an echelle grating, the grating in optical communication with the cross-dispersing element; a focusing element for receiving the light from a second one of the cross-dispersing element and the echelle grating and focusing wavelengths of the light onto a spatial light modulator; the spatial light modulator configured for selectively directing the wavelengths onto a detector for detection. A method of use and the method of fabrication are provided.

Classes IPC  ?

• G01J 3/28 - Etude du spectre
• G01J 3/18 - Production du spectre; Monochromateurs en utilisant des éléments diffractants, p.ex. réseaux

Abrégé

A device for producing x-rays includes: a housing that includes a folded high-voltage multiplier coupled to a filament transformer, the transformer coupled to an x-ray tube for producing the x-rays. A method of fabrication and an x-ray source are disclosed.

Classes IPC  ?

• H01J 35/16 - Enceintes; Récipients; Blindages associés
• H05G 1/06 - Tube à rayons X et au moins une partie de l'appareil d'alimentation de puissance montés à l'intérieur de la même gaine
• G21G 4/08 - Sources radioactives autres que les sources de neutrons caractérisées par des aspects de leur structure spécialement adaptées aux applications médicales
• H02M 7/19 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs agencés pour la marche en série, p.ex. pour la multiplication de la tension
• H01J 35/02 - Tubes à rayons X - Détails
• H02M 7/10 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge sans électrode de commande ou des dispositifs à semi-conducteurs sans éléctrode de commande agencés pour la marche en série, p.ex. pour la multiplication de tension
• H05G 1/12 - Dispositions de l'alimentation en énergie pour alimenter le tube radiogène à rayons X avec du courant continu ou du courant alternatif redressé

Abrégé

An optical emission spectroscopic (OES) instrument includes a spectrometer, a processor and an adjustable mask controlled by the processor. The adjustable mask defines a portion of an analytical gap imaged by the spectrometer. The instrument automatically adjusts the size and position of an opening in the mask, so the spectrometer images an optimal portion of plasma formed in the analytical gap, thereby improving signal and noise characteristics of the instrument, without requiring tedious and time-consuming manual adjustment of the mask during manufacture or use.

Classes IPC  ?

• G01J 3/04 - Systèmes de fentes
• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives
• G01J 3/443 - Spectrométrie par émission
• G01J 3/06 - Systèmes de balayage

Abrégé

A sample cell for a spectrometer, and a spectrometer using such a sample cell. The sample cell may include a housing having a reflective inner surface which is at least a section of a spheroid bounding a cavity. A lens system receives electromagnetic radiation from a source and directs a converging beam through a port in the cavity to a focal point inside the cavity, such that the beam undergoes multiple reflections on the inner surface before exiting the cavity. Arrangements for adjusting beam cross-sectional area and angle are optionally provided. Methods which can be performed on such an apparatus and computer program products for performing such methods are further provided.

Classes IPC  ?

• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives
• G01J 3/42 - Spectrométrie d'absorption; Spectrométrie à double faisceau; Spectrométrie par scintillement; Spectrométrie par réflexion
• G01N 21/03 - Dispositions ou appareils pour faciliter la recherche optique - Détails de structure des cuvettes

Abrégé

An x-ray beam control system includes a feedback control loop circuit (12) having a modulation circuit (16). The feedback control loop circuit generates a control signal. A x-ray tube (18) has a filament response profile of tube current versus filament temperature that is non-linear. A compensation circuit (14) receives the control signal and modifies the control signal according to a compensating function that is matched to the filament response profile. The modulation circuit receives the modified control signal and generates a drive signal. The x-ray tube receives the drive signal at a filament thereof, and outputs a tube current signal having a linear response to the control signal. The feedback control loop circuit receives the tube current signal.

Classes IPC  ?

• H05G 1/34 - Commande du courant anodique, du courant de chauffage ou de la tension de chauffage de tube à rayons X

Abrégé

An x-ray beam control system includes a feedback control loop circuit having a modulation circuit. The feedback control loop circuit generates a control signal. A x-ray tube, has a filament response profile of tube current versus filament temperature that is non-linear. A compensation circuit receives the control signal and modifies the control signal according to a compensating function that is matched to the filament response profile. The modulation circuit receives the modified control signal and generates a drive signal. The x-ray tube receives the drive signal at a filament thereof, and outputs a tube current signal having a linear response to the control signal. The feedback control loop circuit receives the tube current signal.

Classes IPC  ?

• H05G 1/32 - Commande de la tension d'alimentation de l'appareil ou du tube à rayons X
• G01N 23/02 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau
• H05G 1/30 - Commande
• H05G 1/34 - Commande du courant anodique, du courant de chauffage ou de la tension de chauffage de tube à rayons X

Produits et services

Portable spectroscopic instruments using light sources and light detectors for detecting and identifying chemical substances; portable spectroscopic instruments using light sources and light detectors for detecting and identifying biological substances

Abrégé

A method, apparatus and computer program product for tagging reference materials of interest in spectroscopic searching applications is presented. A reference list of materials to be considered as part of a final analysis of a spectroscopic analysis of a sample material is generated. A watchlist of at least one material to be retained for a final analysis of the spectroscopic analysis of a sample material is provided. A final analysis of the sample material is preformed using the watchlist of at least one material and the reference list of materials. A determination is then made regarding whether a spectrum of the sample material matches at least one spectrum of materials on the watchlist and on the reference list.

Classes IPC  ?

• G01R 33/46 - Spectroscopie RMN
• G06K 9/00 - Méthodes ou dispositions pour la lecture ou la reconnaissance de caractères imprimés ou écrits ou pour la reconnaissance de formes, p.ex. d'empreintes digitales
• G01N 24/08 - Recherche ou analyse des matériaux par l'utilisation de la résonance magnétique nucléaire, de la résonance paramagnétique électronique ou d'autres effets de spin en utilisant la résonance magnétique nucléaire
• G01N 21/35 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique en utilisant la lumière infrarouge
• G01N 21/65 - Diffusion de Raman

Abrégé

A method, apparatus and computer program product for tagging reference materials of interest in spectroscopic searching applications is presented. A reference list of materials to be considered as part of a final analysis of a spectroscopic analysis of a sample material is generated. A watchlist of at least one material to be retained for a final analysis of the spectroscopic analysis of a sample material is provided. A final analysis of the sample material is preformed using the watchlist of at least one material and the reference list of materials. A determination is then made regarding whether a spectrum of the sample material matches at least one spectrum of materials on the watchlist and on the reference list.

Classes IPC  ?

• G06F 17/00 - TRAITEMENT ÉLECTRIQUE DE DONNÉES NUMÉRIQUES Équipement ou méthodes de traitement de données ou de calcul numérique, spécialement adaptés à des fonctions spécifiques
• G01N 24/08 - Recherche ou analyse des matériaux par l'utilisation de la résonance magnétique nucléaire, de la résonance paramagnétique électronique ou d'autres effets de spin en utilisant la résonance magnétique nucléaire
• G06F 17/18 - Opérations mathématiques complexes pour l'évaluation de données statistiques
• G01R 33/46 - Spectroscopie RMN
• G01N 21/64 - Fluorescence; Phosphorescence
• G07D 7/12 - Lumière visible, rayonnement infrarouge ou ultraviolet
• G05B 23/02 - Test ou contrôle électrique

Abrégé

An analyzer for analyzing a composition of a sample, and methods of operating an analyzer. The analyzer may include an optical illuminator and a Raman spectrometer to produce Raman spectral data representative of Raman radiation emitted from the sample in response to the illuminating light. Features to reduce background fluorescence are optionally provided. An x-ray illuminator may be provided to illuminate the sample with x-rays, and also an x-ray spectrometer may be present to produce x-ray spectral data representative of fluorescence radiation emitted from the sample in response to the illuminating x-rays. A processor receives the Raman spectral data and any x-ray spectral data and provides an analysis of a compound in the sample.

Classes IPC  ?

• G01N 23/223 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en mesurant l'émission secondaire de matériaux en irradiant l'échantillon avec des rayons X ou des rayons gamma et en mesurant la fluorescence X
• G01N 21/65 - Diffusion de Raman

Abrégé

An analyzer for analyzing a composition of a sample, and methods of operating an analyzer. The analyzer may include an optical illuminator and a Raman spectrometer to produce Raman spectral data representative of Raman radiation emitted from the sample in response to the illuminating light. Features to reduce background fluorescence are optionally provided. An x-ray illuminator may be provided to illuminate the sample with x-rays, and also an x-ray spectrometer may be present to produce x-ray spectral data representative of fluorescence radiation emitted from the sample in response to the illuminating x-rays. A processor receives the Raman spectral data and any x-ray spectral data and provides an analysis of a compound in the sample.

Classes IPC  ?

• G01N 23/223 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en mesurant l'émission secondaire de matériaux en irradiant l'échantillon avec des rayons X ou des rayons gamma et en mesurant la fluorescence X
• G01N 21/65 - Diffusion de Raman

Abrégé

An analyzer for analyzing a composition of a sample, and methods of operating an analyzer. The analyzer may include an optical illuminator and a Raman spectrometer to produce Raman spectral data representative of Raman radiation emitted from the sample in response to the illuminating light. Features to reduce background fluorescence are optionally provided. An x-ray illuminator may be provided to illuminate the sample with x-rays, and also an x-ray spectrometer may be present to produce x-ray spectral data representative of fluorescence radiation emitted from the sample in response to the illuminating x-rays. A processor receives the Raman spectral data and any x-ray spectral data and provides an analysis of a compound in the sample.

Classes IPC  ?

• G01N 21/00 - Recherche ou analyse des matériaux par l'utilisation de moyens optiques, c. à d. en utilisant des ondes submillimétriques, de la lumière infrarouge, visible ou ultraviolette
• G01N 21/65 - Diffusion de Raman

Abrégé

A Raman spectrometer including a laser excitation source, edge filters, and detection optics that direct light into a spectrograph. A spectrograph containing a dispersive element and optics that directs various wavelengths of light onto a segmented diffractive MEMS light modulator array. The MEMS array, depending on actuation state, directs light either to or away from a single detector. Control electronics drive the MEMS light modulator for either sequential wavelength measurement or multiplexed wavelength measurement (Hadamard for example).

Classes IPC  ?

• G01J 3/44 - Spectrométrie Raman; Spectrométrie par diffusion
• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives
• G01J 3/32 - Mesure de l'intensité des raies spectrales directement sur le spectre lui-même en étudiant des bandes d'un spectre successivement à l'aide d'un détecteur unique

Abrégé

A Raman spectrometer including a laser excitation source, edge filters, and detection optics that direct light into a spectrograph. A spectrograph containing a dispersive element and optics that directs various wavelengths of light onto a segmented diffractive MEMS light modulator array. The MEMS array, depending on actuation state, directs light either to or away from a single detector. Control electronics drive the MEMS light modulator for either sequential wavelength measurement or multiplexed wavelength measurement (Hadamard for example).

Classes IPC  ?

• G01J 3/32 - Mesure de l'intensité des raies spectrales directement sur le spectre lui-même en étudiant des bandes d'un spectre successivement à l'aide d'un détecteur unique
• G01J 3/44 - Spectrométrie Raman; Spectrométrie par diffusion
• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives

Abrégé

In an embodiment, an apparatus includes a module assembly and a main assembly. The module assembly includes a module assembly housing, a first faceplate and an analysis unit attached to the first faceplate. The main assembly includes a main assembly housing, a second faceplate and an engine unit rigidly attached to the second faceplate. The engine unit generates a light that passes to the analysis unit via a first lens assembly and a second lens assembly. The first lens assembly is attached to the first faceplate and the second lens assembly is attached to the second faceplate. The module assembly when attached to the main assembly causes the first and second faceplates to act as a single mechanical unit that moves independent of movement of the module assembly housing and/or the main assembly housing.

Classes IPC  ?

• G01J 5/02 - Pyrométrie des radiations, p.ex. thermométrie infrarouge ou optique - Détails structurels
• G01N 21/35 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique en utilisant la lumière infrarouge

Abrégé

In an embodiment, an apparatus includes a module assembly and a main assembly. The module assembly includes a module assembly housing, a first face plate and an analysis unit attached to the first face. The main assembly includes a main assembly housing, a second face plate and an engine unit rigidly attached to the second face plate. The engine unit generates a light that passes to the analysis unit via a first lens assembly and a second lens assembly. The first lens assembly is attached to the first face plate and the second lens assembly is attached to the second face plate. The module assembly when attached to the main assembly causes the first and second face plates to act as a single mechanical unit that moves independent of movement of the module assembly housing and/or the main assembly housing.

Classes IPC  ?

• G01N 21/35 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique en utilisant la lumière infrarouge
• G01N 21/47 - Dispersion, c. à d. réflexion diffuse
• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives
• G01J 3/453 - Spectrométrie par interférence par corrélation des amplitudes
• G01N 21/55 - Réflexion spéculaire

Abrégé

An electrically heated planar cathode for use in miniature x-ray tubes may be spiral design laser cut from a thin tantalum alloy ribbon foil (with grain stabilizing features). Bare ribbon is mounted to an aluminum nitride substrate in a manner that is puts the ribbon in minimal tension before it is machined into the spiral pattern. The spiral pattern can be optimized for electrical, thermal, and emission characteristics.

Classes IPC  ?

• H01J 17/04 - Tubes à décharge en atmosphère gazeuse à cathodes solides - Détails Écrans

Abrégé

An electrically heated planar cathode for use in miniature x-ray tubes may be spiral design laser cut from a thin tantalum alloy ribbon foil (116) with grain stabilizing features. Bare ribbon is mounted to an aluminum nitride substrate (110) in a manner that is puts the ribbon in minimal tension before it is machined into the spiral pattern (118). The spiral pattern can be optimized for electrical, thermal, and emission characteristics.

Classes IPC  ?

• H01J 35/06 - Cathodes

Abrégé

A sampling accessory coupled to a hand-held reflectance spectrometer provides expanded sampling area which in turn provides better signal averaging from agricultural products which are often inhomogeneous. The sampling accessory includes a sample site repositioning means and a "sample cup" having a base that is transparent to near IR wavelengths. The hand-held reflectance spectrometer includes a shutter responsive to control signals from the control circuitry. When the shutter is closed, a reference measurement may be made. When the shutter is open, a sample measurement is taken. Sample repositioning and data acquisition within the cup may be performed by several means. Fresh sample regions may be exposed through either manual or motor driven sample cup rotation. Alternatively, the sample may be vibrated to induce fresh sample exposure at the window. A further embodiment includes illumination and/or detection paths that may be altered through electrically driven steering optics.

Classes IPC  ?

• G01J 3/02 - Spectrométrie; Spectrophotométrie; Monochromateurs; Mesure de la couleur - Parties constitutives
• G01J 3/06 - Systèmes de balayage
• G01J 3/10 - Aménagements de sources lumineuses spécialement adaptées à la spectrométrie ou à la colorimétrie

Abrégé

An electrically heated planar cathode for use in miniature x-ray tubes may be spiral design laser cut from a thin tantalum alloy ribbon foil (with grain stabilizing features). Bare ribbon is mounted to an aluminum nitride substrate in a manner that is puts the ribbon in minimal tension before it is machined into the spiral pattern. The spiral pattern can be optimized for electrical, thermal, and emission characteristics.

Classes IPC  ?

• H01J 17/04 - Tubes à décharge en atmosphère gazeuse à cathodes solides - Détails Écrans

Abrégé

Techniques disclosed herein include systems and methods for identifying counterfeit gold jewelry and other counterfeit gold items. Techniques include determining—using a non-destructive mechanism—whether an item of interest (such as an article represented as true gold) is solid gold or a gold-plated object. Techniques include using an X-ray fluorescence (XRF) analyzer to differentiate true gold from gold plating. The XRF analyzer can distinguish between gold plating and bulk gold material by comparing a ratio of L-alpha and L-beta x-ray lines of gold. The analyzer measures a ratio of intensities of characteristic L-lines of gold using X-ray fluorescence (XRF) spectroscopy. When implemented using an XRF analyzer, the system nondestructively determines whether a test object is made of solid gold/gold alloy or has gold plating only.

Classes IPC  ?

• G01N 23/223 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en mesurant l'émission secondaire de matériaux en irradiant l'échantillon avec des rayons X ou des rayons gamma et en mesurant la fluorescence X

Abrégé

A processing application receives peak information associated with multiple known references samples. The processing application partitions a spectrum into multiple different sized range bins such that a substantially equal number of the peaks associated with the known reference samples reside into each of the multiple different sized range bins. To identify a set of candidate reference samples in a library of reference samples that potentially are a good match an unknown sample under test, the processing application compares peaks associated with the unknown sample to the multiple different sized range bins. The greater the number of range bin matches based on peaks in the unknown sample and peaks in a corresponding reference sample, the greater the likelihood that the unknown sample matches the corresponding reference sample.

Classes IPC  ?

• G06K 9/00 - Méthodes ou dispositions pour la lecture ou la reconnaissance de caractères imprimés ou écrits ou pour la reconnaissance de formes, p.ex. d'empreintes digitales
• G06F 19/24 - pour l'apprentissage automatique, l'exploration de données ou les bio statistiques, p.ex. détection de motifs, extraction de connaissances, extraction de règles, corrélation, agrégation ou classification
• G06K 9/38 - Quantification du signal image analogique
• G06K 9/62 - Méthodes ou dispositions pour la reconnaissance utilisant des moyens électroniques

Abrégé

A processing application receives peak information associated with multiple known references samples. The processing application partitions a spectrum into multiple different sized range bins such that a substantially equal number of the peaks associated with the known reference samples reside into each of the multiple different sized range bins. To identify a set of candidate reference samples in a library of reference samples that potentially are a good match an unknown sample under test, the processing application compares peaks associated with the unknown sample to the multiple different sized range bins. The greater the number of range bin matches based on peaks in the unknown sample and peaks in a corresponding reference sample, the greater the likelihood that the unknown sample matches the corresponding reference sample.

Classes IPC  ?

• G06K 9/62 - Méthodes ou dispositions pour la reconnaissance utilisant des moyens électroniques
• G06F 19/24 - pour l'apprentissage automatique, l'exploration de données ou les bio statistiques, p.ex. détection de motifs, extraction de connaissances, extraction de règles, corrélation, agrégation ou classification
• G06K 9/00 - Méthodes ou dispositions pour la lecture ou la reconnaissance de caractères imprimés ou écrits ou pour la reconnaissance de formes, p.ex. d'empreintes digitales
• G06K 9/38 - Quantification du signal image analogique

Produits et services

(1) Spectroscopic instruments comprising lasers, light sources and light detectors, used for chemical detection and identification purposes.

Abrégé

A thermal neutron monitor includes at least one neutron scintillator sheet interposed between light guides. Scintillation light emitted in opposite transverse directions is captured by the light guides and conveyed to a common detector. The sandwiched geometry of the monitor avoids the need to provide multiple detectors and permits construction of a relatively inexpensive, compact monitor.

Classes IPC  ?

• G01T 3/06 - Mesure de flux de neutrons avec des détecteurs à scintillation

Abrégé

A method of identifying the presence of heroin in an impure heroin composition which contains heroin and at least one fluorescent contaminant which interferes with a Raman signal from the heroin. The method may include contacting the mixture with a solvent such as an alcohol, then contacting the resulting alcohol composition with a SERS surface. The surface may then be exposed to laser light from a hand-held Raman spectrometer to detect a Raman signal from the heroin. An apparatus for performing the method is also provided.

Classes IPC  ?

• G01J 3/44 - Spectrométrie Raman; Spectrométrie par diffusion
• G01N 33/94 - Analyse chimique de matériau biologique, p.ex. de sang ou d'urine; Test par des méthodes faisant intervenir la formation de liaisons biospécifiques par ligands; Test immunologique faisant intervenir des narcotiques
• G01N 21/65 - Diffusion de Raman
• G01N 21/84 - Systèmes spécialement adaptés à des applications particulières
• G01N 21/94 - Recherche de souillures, p.ex. de poussières
• G01N 21/64 - Fluorescence; Phosphorescence

Abrégé

An apparatus and method are disclosed for localizing an element of interest in a sample by comparing XRF spectra acquired from at least two distinct but overlapping inspection volumes. The inspection volumes are varied by changing the geometry of the exciting x-ray and/or fluoresced x-ray beam(s), which may be accomplished by repositioning multi-apertured collimators. Comparison of the XRF spectra acquired from different inspection volumes provides an indication as to whether the element of interest (e.g., lead) is present in a coating layer, in the underlying bulk material, or in both.

Classes IPC  ?

• G01N 23/223 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en mesurant l'émission secondaire de matériaux en irradiant l'échantillon avec des rayons X ou des rayons gamma et en mesurant la fluorescence X

Abrégé

Disclosed herein are methods and systems for scanning objects and associated substances, where the methods include: (a) using a first electronic device to scan a feature of an object and provide reference information about the object based on the scanned feature, where the feature identifies the object or a substance associated with the object; (b) using a second electronic device to measure electromagnetic radiation emitted from the object and provide sample information about the object based on the measured electromagnetic radiation; and (c) comparing the sample information and the reference information to determine whether the object includes the substance associated with the object.

Classes IPC  ?

• G01N 21/00 - Recherche ou analyse des matériaux par l'utilisation de moyens optiques, c. à d. en utilisant des ondes submillimétriques, de la lumière infrarouge, visible ou ultraviolette

Abrégé

We disclose apparatus that includes: (a) an enclosure including an aperture; (b) a prism mounted in the enclosure so that a surface of the prism is exposed through the aperture; (c) an optical assembly contained within the enclosure, the optical assembly including a radiation source and a radiation detector, the source being configured to direct radiation towards the prism and the detector being configured to detect radiation from the source reflected from the exposed surface of the prism; and (d) an electronic processor contained within the enclosure, the electronic processor being in communication with the detector. The apparatus can be configured so that, during operation, the electronic processor determines information about a sample placed in contact with the exposed surface of the prism based on radiation reflected from the exposed prism surface while it is in contact with the sample.

Classes IPC  ?

• G01N 21/25 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes

Abrégé

Methods and apparatus for adapting the shaping time and/or other pulse processing parameters of an x-ray detector (114) in accordance with the elemental composition of a sample and/or energy resolving requirements. X-rays (104) are directed from a source (102) onto a sample (110) and the radiation (108) responsively emitted from the sample (e.g., fluoresced radiation characteristic of the sample's elemental composition) and detected by an x-ray detector (114) that generates pulses representative of the energy and intensity of the incident radiation. Based upon initial analysis of elemental composition, the shaping time and/or other pulse processing parameter (s) are set to optimize count rate subject to constraints of energy resolution in a spectral region of interest.

Classes IPC  ?

• G01N 23/223 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p.ex. rayons X ou neutrons, non couvertes par les groupes , ou en mesurant l'émission secondaire de matériaux en irradiant l'échantillon avec des rayons X ou des rayons gamma et en mesurant la fluorescence X