Class / Patent application number | Description | Number of patent applications / Date published |
250339080 | Including Fourier transform infrared spectrometry | 35 |
20080290279 | Method for Standardising a Spectrometer - The invention provides a method for standardising an infrared spectrometer based on spectral patterns of constituents of atmospheric air naturally occurring in the spectrometer. The invention also provides a spectrometer applying the method. The method selects a spectral pattern in a recorded spectrum and determines a wavelength dependent position value for a feature, such as the centre of the pattern. This value is compared to a reference value that may be obtained from a spectrum recorded by a master instrument, and a standardisation formula can be determined. The absorption peaks from CO | 11-27-2008 |
20080315103 | FOURIER TRANSFORM INFRARED SPECTROPHOTOMETER - Disclosed is a Fourier transform infrared spectrophotometer, which comprises: a main interferometer section including a beam splitter, a fixed mirror, a movable mirror, and a phase plate disposed between the beam splitter and the fixed mirror; a control interferometer section having a quadrature control system for calculating a position of the movable mirror; a center-burst-position detection section operable, based on an input of interference signals and interferograms, to subject respective intensities of the interferograms to an addition processing while correcting a positional deviation of the movable mirror, so as to obtain a cumulative interferogram, and detecting a center burst position having a maximum intensity value in the cumulative interferogram; a center-burst-position storage section operable to store the detected center burst position; and a measurement-start-position determination section operable, based on the stored center burst position, to determine a measurement start position of the movable mirror during the measurement operation. | 12-25-2008 |
20090173884 | Method and apparatus for measuring spectroscopic absorbance - An object of the present invention is to provide a spectroscopic method and an apparatus which can measure a trace element accurately with high sensitivity. In order to achieve this object, for example, in Fourier transformation infrared spectroscopy (FT-IR), a reference spectrum and a measurement spectrum including an impurity spectrum are measured in order to obtain a differential spectrum comprising the impurity spectrum and a flat baseline, correction including a frequency shift of the reference spectrum before calculating a differential spectrum, is performed on the reference spectrum. This makes it possible to remove baseline deformation due to phonon absorbance of silicon included in the conventional differential spectrum, and to obtain an infrared absorption spectrum of the substitutional carbon with high accuracy and high sensitivity. | 07-09-2009 |
20090242770 | Automatic And Continuous Quantitative Analysis Method And Apparatus For Multiple Components - An automatic and continuous quantitative analysis method and apparatus capable of accurately and quickly quantifying the concentration of each component of a plurality of known components having close infrared absorption regions and similar infrared absorption curve shapes, included in a measurement sample. As a quantification wave number for each component of the plurality of components, a wave number at a tip of one absorption peak that overlaps as little as possible with absorption peaks in infrared absorption spectra of the other components, selected as a particular absorption peak for the component, is specified. A step is repeated in which the concentration of each component of the plurality of components having a prescribed highest order in the measurement sample is quantified from an absorbance at an absorption peak corresponding to the quantification wave number of the component having the prescribed highest order, in the spectrum of the measurement sample or a difference spectrum generated immediately before and from a calibration curve generated in advance for the component having the prescribed highest order, and an infrared absorption spectrum for the component having the prescribed highest order alone, where an absorbance at the quantification wave number for the component having the prescribed highest order is set to have the same intensity as the absorbance is subtracted from the spectrum of the measurement sample or the difference spectrum generated immediately before to generate a difference spectrum. | 10-01-2009 |
20090294672 | METHOD FOR DETERMINATION OF THE TOTAL ACID NUMBER AND NAPHTHENIC ACID NUMBER OF PETROLEUM, PETROLEUM CUTS AND PETROLEUM EMULSIONS OF WATER-IN-OIL TYPE BY MID-INFRARED SPECTROSCOPY - The present invention relates to a method for the determination of the total acid number and naphthenic acid number of petroleum, petroleum cuts and petroleum emulsions of water-in-oil type by mid-infrared spectroscopy utilising correlation between data gathered by means of absorption spectrums obtained with a Fourier-transform infrared spectrophotometer operating in the mid-infrared band equipped with an attenuated total reflectance (ATR) accessory, and acidity results obtained through reference methods utilising a multivariate regression model. | 12-03-2009 |
20100012844 | IDENTIFICATION OF IMMUNOGLOBULIN (Ig) DISORDERS USING FOURIER TRANSFORM INFRARED SPECTROSCOPY - A method and a corresponding system for obtaining a serum mid-infrared spectroscopic profile using Fourier-transform infrared spectroscopy (FTIR) are described. The method comprises acquiring FTIR spectra for dried sera and preprocessing the FTIR spectra of sera by differentiation and smoothing to enhance weak spectral features and to remove baseline variations. The preprocessed FTIR spectra are normalized to a common intensity range, the normalization being performed in a spectral sub-region defined by strongest infrared (IR) absorption for a protein to obtain the serum spectroscopic profile. The serum spectroscopic profiles provide a basis to diagnose immunoglobulin disorders or to quantify serum immunoglobulin levels. | 01-21-2010 |
20100108886 | Method and apparatus for infrared spectrometry - A Fourier-Transform Infrared (FTIR) spectrometer for operation in the mid- and long-wave infrared region (about 2-15 micron wavelengths) is disclosed. The FTIR spectrometer is composed of IR-transmitting fiber and uses a broadband IR source. A fiber stretcher is provided to provide a path difference between a first path and a second path having a sample associated therewith. Stretching of the fiber provides a path difference sufficient to generate an interferogram that can subsequently be analyzed to obtain information about a sample. A method for use of the apparatus of the invention is also disclosed. The method involves stretching of an IR-transmitting fiber to create a path difference sufficient to generate an interferogram. Various aspects of these features enable the construction of compact, portable spectrometers. | 05-06-2010 |
20100108887 | PELLET FOR SPECTROMETRY, PROCESS FOR PRODUCING THE PELLET, AND METHOD FOR SPECTROMETRY USING THE PELLET - A pellet used for spectrometry is manufactured by, for example, mixing polyethylene powder having an average particle size not greater than 35 μm with powder of an analysis target, and compressing the mixture. A sample pellet (B) prepared by compacting only polyethylene powder having an average particle size not grater than 35 μm exhibits a high transmittance in the wave number range of 10-340 cm | 05-06-2010 |
20100108888 | REDUCING SCATTERING RELATED FEATURES IN TERHERTZ TIME DOMAIN SPECTROSCOPY BZ AVERAGING THE IMPULSE WAVEFORM OVER A PLURALITY OF SAMPLE POINTS - A method of investigating an object, comprising the steps of: (a) irradiating the object with an optically-generated pulse of electromagnetic radiation, said pulse having a plurality of frequencies in the range from 100 GHz to 100 THz; (b) detecting radiation transmitted and/or reflected from the object to obtain a time domain waveform; (c) repeating steps (a) and (b) for a plurality of points on the object and (d) combining data from step (c) to produce a time domain waveform for the object which has been averaged over the plurality of points. | 05-06-2010 |
20100133437 | HANDHELD INFRARED AND RAMAN MEASUREMENT DEVICES AND METHODS - 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. | 06-03-2010 |
20100243902 | INFRARED SPECTROPHOTOMETER AND AUXILIARY DEVICE THEREFOR - An infrared spectrophotometer, which is capable of preventing measurement data measured from being adversely affected by moisture vapor. An internal space of an attachment receiving therein an optical element is sealed and isolated from ambient air by providing a tube and others, and a dehumidifier is provided in the internal space of the attachment for an optical path. Thus, the dehumidifier is disposed in a relatively narrow space, so that the internal space of the attachment can be efficiently dehumidified within a short period of time so as to reduce humidity in the internal space to suppress absorption of moisture vapor which would otherwise occur on the optical path in the internal space of the attachment. This makes it possible to prevent a negative influence of moisture vapor on measurement data, while reducing a standby time due to the dehumidification. | 09-30-2010 |
20100243903 | METHOD AND SYSTEM FOR MATERIAL CHARACTERIZATION IN SEMICONDUCTOR PRODUCTION PROCESSES BASED ON FTIR WITH VARIABLE ANGLE OF INCIDENCE - During the processing of complex semiconductor devices, dielectric material systems comprising a patterned structure may be analyzed in a non-destructive manner by using an FTIR technique in combination with a plurality of angles of incidence. In this manner, topography-related information may be obtained and/or data analysis may be made more efficient due to the increased amount of information obtained by the plurality of angles of incidence. | 09-30-2010 |
20100320388 | MICROSCOPIC INFRARED ANALYSIS BY X-RAY OR ELECTRON RADIATION - An infrared (IR) emission spectroscopy and microscopy apparatus with X-ray excitation or electron excitation and an improved process for extending spatial relation of infrared (IR) microscopy and performing microscopic infrared (IR) analysis by X-ray or electron radiation are provided. By utilizing nanometer sized X-ray beams or electron beams to produce IR emission, the spatial resolution of IR microscopy is extended. Simultaneously performing X-ray or electron-based spectroscopy as well as structural studies are enabled. | 12-23-2010 |
20110024630 | System, Device, and Methods for Real-Time Screening of Live Cells, Biomarkers, and Chemical Signatures - An ATR-FTIR device and system are described that defect live-cell responses to stimuli and perturbations in real-time. The system and device can monitor perturbations resulting from exposures to various physical, chemical, and biological materials in real-time, as well as those sustained over a long period of time, including those associated with stimuli having unknown modes-of-action (e.g. nanoparticles). The device and system can also be used to identify specific chemical species or substances that profile cellular responses to these perturbations. | 02-03-2011 |
20110062338 | Methods and Systems for In-Vitro Analysis of Biological Cells and/or Microorganisms - Methods for in-vitro analysis of biological cells and/or microorganisms to determine characteristics such as: degree of differentiation, cell type, donor individuals, culture conditions, purity, lack of natural characteristic, or additional characteristics in comparison to natural characteristics. The methods include the steps of: (a) projecting infrared radiation on a sample; (b) recording spectral characteristics of the sample; (c) deriving a Fourier transform infrared spectrum (FT-IR) from the collected spectral characteristics; (d) generating a derivative transformation of the FT-IR spectrum; (e) comparing said derivative transformation with a derivative of a reference FT-IR spectrum; (f) identifying deviations of said derivative from said reference derivative; and (g) providing an analysis of said characteristics based on the presence of said deviations. In addition, the invention relates to an apparatus for carrying out the disclosed methods. | 03-17-2011 |
20110079718 | EXTERNAL/INTERNAL OPTICAL ADAPTER FOR FTIR SPECTROPHOTOMETER - A Fourier Transfer Infrared (FTIR) spectrophotometer having reduced baseline noise. The system and method include internal or external optical adapters having a moveable beamsplitter for splitting the source light beam into a reference beam and a sample beam, and may include a variable bandpass filter, variable preamplifier and reversed biased photodiodes. | 04-07-2011 |
20110079719 | EXTERNAL/INTERNAL OPTICAL ADAPTER WITH BIASED PHOTODIODES FOR FTIR SPECTROPHOTOMETER - A Fourier Transfer Infrared (FTIR) spectrophotometer having reduced baseline noise. The system and method include internal or external optical adapters having a moveable beamsplitter for splitting the source light beam into a reference beam and a sample beam, and may include a variable bandpass filter, variable preamplifier and reversed biased photodiodes. | 04-07-2011 |
20110204235 | SYSTEM AND METHOD FOR MAGNITUDE AND PHASE RETRIEVAL BY PATH MODULATION - A system includes a transmitter is configured to transmit an electromagnetic signal through a sample cell (including a sample medium) to a receiver, which is configured to receive the electromagnetic signal and another electromagnetic signal for mixing therewith. Propagation paths of the signals to the transmitter and receiver include a first propagation path of the electromagnetic signal to the transmitter, and a second propagation path of the other electromagnetic signal to the receiver. The arrangement, which is located along either or each of the propagation paths of signals to the transmitter and receiver, is configured to alter the length of a respective propagation path. And the processor configured to recover an amplitude and phase of the transmitted electromagnetic signal, and calculate a complex index of refraction of the sample medium as a function of the amplitude and phase of the transmitted electromagnetic signal. | 08-25-2011 |
20120267533 | PROCESSES FOR THE PREPARATION OF FORM I AND FORM II OF PALONOSETRON HYDROCHLORIDE - The present invention relates to processes for the preparation of Form I and Form II of palonosetron hydrochloride. The present invention further relates to a method of determining the polymorphic forms of palonosetron hydrochloride using Fourier-Transform Infra-red (FTIR) method. | 10-25-2012 |
20140110582 | SYSTEM FOR DIRECTLY MEASURING THE DEPTH OF A HIGH ASPECT RATIO ETCHED FEATURE ON A WAFER | 04-24-2014 |
20140145083 | PLASTIC IDENTIFICATION DEVICE - A plastic identification device includes a sample holding unit for holding, as a sample, a plastic to be identified, an infrared spectrophotometer including a light source for generating infrared light, an incident optical system for emitting the infrared light from the light source on the sample held by the sample holding unit, a light detector, and a receiver optical system for guiding the infrared light from the sample to the light detector, and a calculation device for identifying a type of the plastic which is the sample based on a detection result of the light detector. A focal length of the incident optical system is shorter than a focal length of the receiver optical system. | 05-29-2014 |
20140166884 | DIAGNOSIS OF CANCER - A method is provided including obtaining an infrared (IR) spectrum of a blood plasma sample by analyzing the blood plasma sample by infrared spectroscopy, and based on the infrared spectrum, generating an output indicative of the presence of a solid tumor or a pre-malignant condition. Other applications are also described. | 06-19-2014 |
20140175288 | INTERFEROMETER HAVING MULTIPLE SCAN CARRIAGES - An interferometer includes a fixed assembly including a base, a beam splitter assembly and a fixed mirror, and a movable assembly including an upper scan carriage, a lower scan carriage and a movable mirror connected to the lower scan carriage. The pair of inner bearing flexures is connected to the base and the upper scan carriage, enabling movement of the upper scan carriage relative to the base, and the pair of outer bearing flexures is connected to the upper and lower scan carriages, enabling movement of the lower scan carriage relative to the upper scan carriage. The movement of the upper and lower scan carriages enable a scan movement of the movable mirror in a scan direction restricted such that the scan movement maintains a plane containing the movable mirror parallel to planes containing the movable mirror at respective distances between the movable and fixed assemblies during the scan movement. | 06-26-2014 |
20140209803 | METHODS, ELECTRICAL POWER CONTROL SYSTEM, AND POWER CONTROL CIRCUIT FOR MAINTAINING OR PROVIDING CONSTANT OR SUBSTANTIALLY CONSTANT POWER, FOR REDUCING AND/OR MINIMIZING POWER DECAY, AND FOR IMPROVING AN INFRARED SOURCE DRIVER, AND METHODS OF USING SAME - A power system, power circuit, and methods for maintaining or providing a constant or substantially constant power source and for reducing and/or minimizing power decay of a predetermined component are provided. Such improvement of power delivery and minimization of power loss is important for precision instrumentation applications. One such application is the infrared (“IR”) source driver for a Fourier Transform Infrared Spectrometer (“FTIR”). The power system and/or circuit may include two integrated circuits in a novel way to make an efficient constant power IR source driver. The method may include having a switching regulator comparing a sample of output voltage with a reference voltage, a second element computing, calculating and/or creating a voltage that is a product of another voltage and a current to obtain a signal proportional to delivered power, and operating a closed loop regulator to provide a constant delivered power to the source. | 07-31-2014 |
20140239181 | FILM THICKNESS MEASUREMENT METHOD - A measurement target including a semiconductor substrate, and a first epitaxial layer and a second epitaxial layer stacked in this order on the semiconductor substrate and having no difference in refractive index of a real part from the semiconductor substrate is subjected to reflection interference analysis using a Fourier transform infrared spectroscopy. The thickness of the first epitaxial layer is used as a fitting parameter so as to prevent shift between an interference waveform of a resultant reflection interference pattern containing distortion appearing in a wave number range near an abnormal dispersion range of a refractive index caused by phonon absorption and an interference waveform of a numerically calculated reflection interference pattern in the same wave number range. The thickness of the first epitaxial layer determined during the fitting of the numerically calculated reflection interference pattern is defined as a measured value of the thickness of the first epitaxial layer. | 08-28-2014 |
20140246591 | SPECTROSCOPIC ANALYSER - An analyser | 09-04-2014 |
20140264032 | TERAHERTZ TIME-DOMAIN SPECTROSCOPIC ELLIPSOMETRY SYSTEM - A terahertz time-domain spectroscopic ellipsometry system includes a sample stage, a terahertz emitter configured to provide pulses of terahertz radiation with preselected polarization components to illuminate a sample on the sample stage along an incident direction, and a coherent terahertz detection system arranged to coherently detect pulses of terahertz radiation from the terahertz emitter along an emerging direction after at least one of reflecting from or passing through the sample. The sample stage is rotatable to vary a relative angle between the incident direction and the emerging direction, and the coherent terahertz detection system substantially maintains alignment for amplitude and polarization detection as the relative angle is varied. | 09-18-2014 |
20150083916 | INTERFEROMETER HAVING MULTIPLE SCAN CARRIAGES - An interferometer includes a first assembly having a base, a beam splitter assembly to split light into first and second portions, and a fixed mirror for reflecting the first portion of light; and a second assembly movable with respect to the first assembly, and having first and second scan carriages, and a movable mirror connected to the second scan carriage for reflecting the second portion of light. The beam splitter assembly combines the reflected first and second portions of light into a recombined radiation beam. Inner bearing flexures enable movement of the first scan carriage relative to the base, and outer bearing flexures enable movement of the second scan carriage relative to the first scan carriage, such that a plane containing the movable mirror is maintained parallel to multiple planes containing the movable mirror at respective distances between the second and first assemblies during scan movement of the movable mirror. | 03-26-2015 |
20150144792 | Vibrational Spectroscopic Techniques for Classifying Chronic Pain States - Methods and systems for diagnosing a chronic pain syndrome in a subject are provided. The methods and systems include approaches for identifying a diagnosis based on the vibrational spectra of biological samples. | 05-28-2015 |
20150300950 | METHOD FOR DETECTING AN ETCHING RESIDUE - A method for detecting an etching residue is provided, comprising fitting a boundary of a pattern in a position to be detected by color difference of film layers, and positioning the pattern in the position to be detected, and acquiring the pattern in the position to be detected; testing the pattern in the position to be detected by an infrared spectroscopy, and obtaining an infrared spectrogram; and determining whether there exists the residue according to the infrared spectrogram. | 10-22-2015 |
20160003676 | FOURIER TRANSFORM INFRARED SPECTROMETER - A Fourier transform infrared spectrophotometer that is free from an effect of interference condition change resulting from an accessory being mounted and has a high measurement accuracy is provided. A Fourier transform infrared spectrophotometer according to the present invention is a Fourier transform infrared spectrophotometer including a common base on which a sample chamber | 01-07-2016 |
20160033390 | Motorized Variable Path Length Cell for Spectroscopy - The present invention is thus directed to an automated system and method of varying the optical path length in a sample that a light from a spectrophotometer must travel through. Such arrangements allow a user to easily vary the optical path length while also providing the user with an easy way to clean and prepare a transmission cell for optical interrogation. Such path length control can be automatically controlled by a programmable control system to quickly collect and stores data from different path lengths as needed for different spectrographic analysis. Such a methodology and system, as presented herein, is able to return best-match spectra with far fewer computational steps and greater speed than if all possible combinations of reference spectra are considered. | 02-04-2016 |
20160131600 | APPARATUS AND TECHNIQUES FOR FOURIER TRANSFORM MILLIMETER-WAVE SPECTROSCOPY - Examples herein include apparatus and techniques that can be used to perform rotational spectroscopy on gas-phase samples. Such techniques can include using a spectrometer providing frequency synthesis and pulse modulation to provide excitation (e.g., pump or probe pulses) of a gas-phase sample at mm-wave frequencies. Synthesis of such mm-wave frequencies can include use of a frequency multiplier, such as an active multiplier chain (AMC). A free induction decay (FID) elicited by the excitation or other time-domain information can be obtained from the sample, such as down-converted and digitized. A frequency domain representation of the digitized information, such as a Fourier transformed representation, can be used to provide a rotational spectrum. | 05-12-2016 |
20160153835 | COMB RESOLVED FOURIER TRANSFORM SPECTROSCOPY | 06-02-2016 |
20160377482 | SOLID STATE WIDEBAND FOURIER TRANSFORM INFRARED SPECTROMETER - A compact, low cost FTIR spectrometer with no moving parts includes an interferometer having optical paths through silicon waveguides. The optical path lengths are varied by changing the temperature and/or carrier density of at least one of the waveguides. In embodiments, the interferometer is a Mach-Zehnder interferometer. Embodiments vary both optical path lengths in opposite directions. In embodiments, a germanium or InGaAs IR detector is grown on the same wafer as the waveguides. Embodiments include a laser pump, such as a COT CW diode laser, and wavelength mixer, such as an OPGaAs or OPGaP converter, for up and/or down converting measured IR wavelengths into a range compatible with the waveguide and detector materials. The wavelength mixer can be a waveguide. Embodiments include a sample compartment and an IR source such as a glowbar. In embodiments, the sample compartment can be exposed to ambient atmosphere for analysis of gases contained therein. | 12-29-2016 |