Class 356/306 - With internal standard comparison

Subclass of Class 356 - Optics: measuring and testing
Definition: Subject matter which includes means to detect and measure
No. of patents: 33
Last issue date: 07/08/2008

Number	Title	Issue Date
7398119	Assessing blood brain barrier dynamics or identifying or measuring selected substances, including ethanol or toxins, in a subject by analyzing Raman spectrum signals A non-invasive method for analyzing the blood-brain barrier includes obtaining a Raman spectrum of a selected portion of the eye and monitoring the Raman spectrum to ascertain a change to the dynamics of the blood brain barrier. Also, non-invasive methods for...	07/08/2008
7359804	System and method for calibrating remote emissions sensing instruments A system and method is provided for obtaining calibration curves for CO and CO2 during laboratory calibration of one or more remote emissions sensing (RES) instruments, and for self-calibration of on-road RES instruments to compensate for changes in backg...	04/15/2008
7336352	Position detection apparatus An apparatus for detecting a position of a target mark out of a plurality of marks in a region of an object to obtain a position of the region of the object. The apparatus includes a scope configured to sense a first image of the object at a first magnification and ...	02/26/2008
7280204	Multi-spectral detector and analysis system A multi-spectral detection and analysis system detects and classifies a targeted sample. The system may include a light source that causes the targeted sample to luminesce. A light dispersion element disperses the luminescence to a photodetector in a photodetector a...	10/09/2007
7265824	Method and device for obtaining a low-noise optical signal The invention relates to a method and a device for obtaining a low-noise optical signal. According to the method, a luminous beam is injected through two apertures and after detection respectively a basic optical signal (21) and a corrective optical si...	09/04/2007
7254490	Marking system and method A methodology for facilitating the identification, authentication or quality control of packaged products is described comprising a marking and an authentication phase. In the marking phase the method involves obtaining an analytical specification, and for example a...	08/07/2007
7248357	Method and apparatus for optically measuring the heating value of a multi-component fuel gas using nir absorption spectroscopy A method and system for measuring heat energy of a combustible fluid in which light having wavelengths in the near-infrared is directed into a test cell containing the combustible fluid and portions of the light not absorbed by the combustible fluid and passing out ...	07/24/2007
7241569	Method and a device for the evaluation of biopolymer fitness A Method for identifying one or a small number of molecules, especially in a dilution of ≦1 μM, using laser excited FCS with measuring times ≦500 ms and short diffusion paths of the molecules to be analyzed, wherein the measurement is performed in small volume ...	07/10/2007
7110096	Method for determing optical characteristics through a protective barrier Color/optical characteristics measuring systems and methods are disclosed. Perimeter receiver fiber optics/elements are spaced apart from a central source fiber optic/element and received light reflected from the surface of the object is measured. Light from the per...	09/19/2006
6751012	Method and apparatus for measuring noise figure in optical amplifiers An apparatus for measuring the noise figure in optical amplifiers employed for large bandwidth applications such as dense wavelength division multiplexing systems. A booster amplifier coupled to a light source increases the average power associated with a plurality ...	06/15/2004
6582903	Method and a device for the evaluation of biopolymer fitness A method for identifying one or a small number of molecules, especially in a dilution of ࣘ1 μM, using laser excited FCS with measuring times ࣘ500 ms and short diffusion paths of the molecules to be analyzed, wherein the measurement is performed in sm...	06/24/2003
5991031	Optical density measuring apparatus An optical system for measuring an optical density of a sample in which homogeneity of light employed for measuring the density thereof is secured by including optical information upon a light source uniformly inside a measurement space about an optical a...	11/23/1999
5920385	Optical energy transfer method A method of collecting optical energy which allows the use of short focal length mirrors of relatively small physical size and in particular the use of the standard collecting mirrors usually employed in such spectrophotometers, for a wide range of sample...	07/06/1999
5894343	Passive rangefinder A passive rangefinder for determining the range to an object such as an aircraft, rocket or missile which emits electromagnetic radiation makes use of spectral measurements over a broad band of frequencies. The rangefinder includes means 202 for forming a...	04/13/1999
5891314	Method and apparatus for correcting lens non-uniformities in an electrophoresis apparatus A method and apparatus for correcting non-uniformities in the lens assembly of an electrophoresis apparatus is provided. Assuming a detector with a uniform responsivity as well as a uniform illumination source, correcting for lens non-uniformities allows ...	04/06/1999
5854491	Method and apparatus for electro optically determining the dimension, location and attitude of objects A method and apparatus for optically determining the dimension of part surfaces. Particular embodiments describe optical triangulation based coordinate measurement machines capable of accurate measurement of complex surfaces, such as gear teeth and turbin...	12/29/1998
5742525	Method for eliminating the fluctuation and drift of spectral line intensities This invention is a method for improving the quality of analytical measurement data by eliminating the fluctuation and drift of spectral line intensities obtained by an atomic emission spectrometer or a mass spectrometer. Carrying out this method needs me...	04/21/1998
5738997	Method of assay of enzymatic activity and apparatus therefor Method of assay of enzymatic activity, comprising projecting excitation light to a sample containing an enzyme, a substrate which forms a product by action of the enzyme, and a reference substance which is insensitive to the action of the enzyme but emits...	04/14/1998
5738992	Multiple output referencing system for evanescent wave sensor An evanescent wave system and method including an optical sensor for use in assaying a reference material and at least one molecular species or analyte in a test medium or test sample for diagnostic and other applicable purposes. The sensor includes a wav...	04/14/1998
5663050	Sensor for antigen-antibody reactions A multi-purpose on-line or field-portable system and method for monitoring the presence and concentration of selected antigen-antibody reactions singly or in combination that result from the presence of specific microorganisms or free antigens present or ...	09/02/1997
5633313	Method and apparatus for in situ, non-invasive polymer cure determination A method and apparatus (10) for detection of the degree of cure of a polymer in situ and non-invasively. The method and apparatus uses a solvatochromic probe molecule which upon curing produces a shift in the fluorescence emission spectrum as compared to ...	05/27/1997
5626714	Method for detecting etching endpoint and etching apparatus and etching system using the method thereof A method for detecting an etching endpoint and a plasma etching apparatus and a plasma etching system using such a device are disclosed, in which time series data of a signal corresponding to the amount of light of the plasma light generated during the pl...	05/06/1997
5543329	Sensor for antigen-antibody reactions A multi-purpose on-line or field-portable system and method for monitoring the presence and concentration of selected antigen-antibody reactions singly or in combination that result from the presence of specific microorganisms or free antigens present or ...	08/06/1996
5525466	Multiple output referencing system for evanescent wave sensor An evanescent wave system and method including an optical sensor for use in assaying a reference material and at least one molecular species or analyte in a test medium or test sample for diagnostic and other applicable purposes. The sensor includes a wav...	06/11/1996
5412468	Grouping of spectral bands for data acquisition in a spectrophotometer Spectral bands are grouped for data acquisition in a spectrophotometer with a charge-coupled detector having a plurality of pixels. Preliminary data is generated on time-integrated radiation to the pixels for a sample. Maximum permitted exposure times for...	05/02/1995
5363189	Spectroscopic analysis method and analyzing system A plurality of elements in a sample are specified as monitoring elements. Each time at a exciting the sample, the light intensity of the line of the monitoring elements and the measured elements is detected and memorized. From the memorized data, the dist...	11/08/1994
4391523	Scannable detector system for echelle grating spectrometers A scannable detector system for echelle grating spectrometers is disclosed in which a photodetector is positioned behind an aperture plate having a plurality of apertures corresponding to focal positions of the spectral array eminating from the grating. T...	07/05/1983
4306877	Optical measurement of concentration The concentration of a substance of interest is measured by exposing a peable-membrane face of an indicator chamber containing an indicator to the substance, monochromator radiation being incident upon the indicator through a transparent wall of the indi...	12/22/1981
4255051	Apparatus for emission spectrochemical analysis Apparatus for emission spectrochemical analysis wherein the sample to be analyzed is excited by repeated spark discharge to emit light, which is dispersed to produce a spectrum containing emission lines characteristic of the elements in the sample. The in...	03/10/1981
4214835	Spectrometer sequential readout system A spectrometer readout system with storage capacitors for temporarily storing output signals generated by a series of photomultiplier tubes that are positioned to monitor selected spectral lines. A voltage-time converter sequentially discharges the capaci...	07/29/1980
4140394	Spectrometer sequential readout system A spectrometer readout system with storage capacitors for temporarily storing output signals generated by a series of photomultiplier tubes that are positioned to monitor selected spectral lines. A voltage-time converter sequentially discharges the capaci...	02/20/1979
4111556	Control system for alloy tester A workpiece is positioned in contact with a contact electrode and spaced by a gap from a counter electrode. A unipolar electrical pulse is passed across this gap during a first time period. Thereafter during a second time period the light from the spark d...	09/05/1978
4063094	Gas analyzer Presence of a substance in a gaseous medium is detected by introducing a sample of the gaseous medium under consideration into a variable volume cavity formed by the walls of a cylinder and the operating face of a piston reciprocable in the cylinder, the ...	12/13/1977

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Class 356/306 - With internal standard comparison