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4561777 |
Apparatus and method for quantitative determination of materials contained in fluids
Apparatus and method for near real-time in-situ monitoring of particulates and vapors contained in fluids. Initial filtration of a known volume of the fluid sample is combined with laser-induced...
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4555177 |
Method and apparatus for detecting singlet state resonance fluorescence
A method and apparatus for detecting the wavelength of singlet state resonance fluorescence of a sample, wherein the sample is illuminated sequentially with various incident wavelengths. For each...
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4553840 |
Double monochrometer
A double monochrometer comprises a main monochrometer including a plane grating and an auxiliary monochrometer including a concave grating. The concave grating is disposed on the entrance or exit...
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4549807 |
Process for measuring fluorescence
Fluorescent measurements are taken utilizing a Raman enhancing surface by a method which allows reduction or essentially complete elimination of interference by fluorescence quenchers. In...
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4548498 |
Laser induced fluorescence detection in modern liquid chromatography with conventional and micro columns
In a method and a device for laser induced fluorescence detection in liquid chromatography a light beam (1) is directed from a laser source (2) towards a liquid flowing in a chosen flow direction...
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4548499 |
Arrangement for measuring fluorescence polarization
Arrangement for measuring the fluorescence polarization of cells or particles which are aligned individually along a flow stream illuminated by means of an illumination field wherein the cells are...
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4537861 |
Apparatus and method for homogeneous immunoassay
Apparatus and method for an immunoassay of a binding reaction between a ligand and an antiligand which are typically an antigen and an antibody, including a spatial pattern formed by a spatial...
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4531834 |
Fluorimeter
A fluorimeter comprises an excitation optical system projecting the excitation light having a selected wavelength for a sample to said sample, a sample cell for accommodating the sample;...
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4515476 |
Device for the ocular determination of any discrepancy in the luminescence capacity of the surface of a tooth for the purpose of identifying any caried area on the surface to the tooth
A device for the ocular determination of any discrepancy in the luminescence capacity of the surface of a tooth (4) for the purpose of assessing the extent of any part (4a) of the surface of the...
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4506979 |
Compact radiation fringe velocimeter for measuring in three dimensions
A uniquely configured radiation fringe velocimeter is used to measure all three components of velocity remotely from a single point. The device is particularly intended for utilization aboard an...
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4501970 |
Fluorometer
A sensitive frontal approach fluorometer which is suitable for measuring the fluorescence of samples in open top microtest wells and which has an optical system for (a) directing an exciting light...
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4500641 |
Flow cytometer for identifying algae by chlorophyll fluorescence
Identification of algae in water samples is carried out with a flow cytometer having at least one high intensity light source to provide a light path such as a laser, means for passing the algae...
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4500204 |
Scanning-type lithographic and image-pickup device using optical fiber
A scanning-type lithographic and image-pickup device causes the terminal face of either a projecting optical fiber or a picking-up optical fiber to scan a given object in the plane of real image of...
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4498766 |
Light beam focal spot elongation in flow cytometry devices
A flow cytometry apparatus comprises a nozzle for flowing particles in a stream of fluid. A source of light, such as from a laser, is adapted to direct a beam of light at the flowing particles. A...
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RE31815 |
Method and apparatus for detecting the presence of caries in teeth using visible luminescence
A method and apparatus for detecting the presence of caries in human teeth using visible luminescence. A region to be examined is excited with a beam of monochromatic light. The intensity of the...
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4490040 |
Spectralfluorometer arrangement
The invention relates to a spectral fluorometer arrangement including at least one laser light source, particularly for use in measuring the luminescence in the course of a qualitative and...
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4483614 |
Optical air data measurement system
A radiation fringe velocimeter subsystem and a subsystem for determining air density related parameters, are combined into a single optical system (20) which permits various important parameters...
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4462686 |
Laser isotope detection and measurement
The present invention relates to an apparatus for laser isotope detection and concentration measurement (LIDAM). A test sample containing first and second isotopes of a specific material or...
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4461572 |
Instrument for measuring light emission induced by repetitive stimulation of the same type
Light emission to be observed is repeatedly started by starting means when each timing interval is maintained much longer than the sustaining time of the light emission. An image initiated by the...
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4461573 |
Spectrafluorometer arrangement
The invention relates to a spectral fluorometer arrangement including a laser light source, particularly for use in measuring the luminescence in the course of a qualitative and quantitative...
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4460274 |
Process for the luminescense-spectroscopic examination of coatings and coating profiles
The invention relates to a process for luminescence-spectroscopic examination and determination of coatings and coating profiles of solid and liquid layers and layer assembles whereby the...
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4451149 |
Polarization fluoroimmunoassay apparatus
Fluoroimmunoassay of fluorescently tagged species using a fiber optical light guiding system, and single or paired fluorescent detectors, and polarizing the activating radiation and both...
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4448524 |
Reflective containment of electromagnetic radiation in matrix isolation thin films
Efficient transmission of light through a matrix isolation thin film is obtained despite the fact that the index configuration of the thin film is not appropriate for classical waveguides. The...
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4444317 |
Observation of immunofluorescene for distinguishing between specific and nonspecific binding of conjugates
Disclosed are a method and a device for distinguishing particles or regions therein to which fluorochrome-labeled antibodies or antigens, termed conjugates, are bound by the specific immune...
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4443072 |
Purged window apparatus utilizing heated purge gas
A purged window apparatus utilizing tangentially injected heated purge gases in the vicinity of electromagnetic radiation transmitting windows, and a tapered external mounting tube to accelerate...
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4440497 |
Combination absorbance fluorescence aspirating thermal cuvette
A flow cell is described comprising a solid liquid tight body having axial and radial optical paths. Absorbance and fluoroescence characteristics of a fluid sample in the cell may be measured...
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4421860 |
Homogeneous fluoroimmunoassay involving autocorrelation processing of optically sensed signals
In the course of a reaction in which one of the reactants is on the surface of carrier particles in a solution and another of the reactants is tagged with a fluorescent substance, some of the...
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4419583 |
Polarization fluoroimmunoassay with pulsed light source
Fluroroimmunoassay of fluoroescently tagged species using pulsed high intensity light, and single or paired fluorescent detectors, and polarizing the activating radiation and both fluorescent...
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4415265 |
Method and apparatus for aerosol particle absorption spectroscopy
A method and apparatus for determining the absorption spectra, and other properties, of aerosol particles. A heating beam source provides a beam of electromagnetic energy which is scanned through...
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4411525 |
Method of analyzing an object by use of scattering light
A light beam having a limited diameter impinges upon and transmits through an object and scattering light carrying information regarding the internal structure or composition of the sample is...
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4410271 |
Multiple-reflection optical gas cell
A multiple-reflection optical cell for Raman or fluorescence gas analysis consists of two spherical mirrors positioned transverse to a multiple-pass laser cell in a confronting plane-parallel...
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4407964 |
Homogeneous fluoroimmunoassay involving sensing radiation for forward and back directions
In the course of a reaction in which one of the reactants is on the surface of carrier particles in a solution and another of the reactants is tagged with a fluorescent substance, some of the...
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4407008 |
Method and apparatus for light-induced scanning-microscope display of specimen parameters and of their distribution
The invention contemplates scanning-microscope display of plural observed parameters of an examined specimen, where the parameters derive from flying-spot light-exposure of the specimen, and where...
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4402606 |
Optogalvanic intracavity quantitative detector and method for its use
The disclosure relates to an optogalvanic intracavity detector and method for its use. Measurement is made of the amount of light absorbed by atoms, small molecules and ions in a laser cavity...
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4394237 |
Spectroscopic monitoring of gas-solid processes
A method for accurately monitoring and adjusting gas phase processes such as gas etching and chemical vapor deposition has been found. This method relies on the use of induced fluorescence. The...
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4351611 |
Monitoring of a detection zone utilizing zero order radiation from a concave reflecting grating
Disclosed is an optical flow system wherein individual particles, which are sequentially suspended in a fluid flow, are irradiated at a detection zone with an excitation source to generate...
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4350892 |
X'-, Y'-, Z'- axis multidimensional slit-scan flow system
A cytofluorometer for simultaneously obtaining multidimensional slit-scan type fluorescence contours of particles, particularly biological cells, in flow. It is recognized that a cell may be...
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4330207 |
Fluorescence spectrophotometer
A fluorescence spectrophotometer comprising a light source, an excitation side monochromator which makes light from the light source be subjected to spectroscopic analysis for illuminating as...
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4330208 |
Process and apparatus for regulating the impact of a light beam on a target
Process and apparatus for regulating the impact on a target of a light beam emitted by a source. The position and dimension of the impact are regulated by respectively using two beams, whose...
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4327155 |
Coated metal structures and method for making
Dual coated erosion resistant metal or ceramic structures are provided having an interior adherent indicating metallic or ceramic layer containing a UV sensitive phosphor and an exterior ceramic or...
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4327120 |
Method for coating a metal substrate
A plasma or flame spraying method is provided for applying a ceramic or metallic UV sensitive indicating coating onto a metal substrate. Particle size control of the ingredients used in the plasma...
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4311387 |
Flow-through sample cell and collecting and illuminating optics for liquid chromatography
The present invention includes an apparatus for measuring radiation from a sample. The apparatus includes means for axially focusing radiation from an excitation monochromator at the sample. The...
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4305660 |
Recording transmission and emission spectra
A first monochromator includes a diffraction grating that is adapted for occlusion by a mirror. When the mirror occludes the grating, a white light input is transmitted through the first...
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4299229 |
Method of observing the aim or effect of a laser beam on a target
A method of observing the aim or effect of a laser beam on a target which fluoresces upon irradiation with a laser beam uses the laser beam to provide light for observing the target, but shields...
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4293221 |
Multidimensional slit-scan flow system
Flow systems for photometric analysis of particles, such as biological cells, particularly for obtaining multidmensional slit-scan type contours, as well as other images. In one broad approach,...
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4284354 |
Sensitive nonlinear optical spectroscopy
Saturation spectroscopy involving synchronous phase-sensitive detection and measurement of the intensity of the output when one of the input beams is chopped has a drawback that scattered light and...
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RE30712 |
System and apparatus for contour plotting the total luminescence spectrum of a sample
A system for plotting the total luminescence spectrum of a sample comprises a spectrofluorometer including excitation and emission monochromator stages having operating wavelengths dependent on...
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4281924 |
Reflector for the laser beam of a particle analyzer
An apparatus and method for illuminating particles, wherein a source of illumination provides a beam of illuminating radiation which perpendicularly intersects a stream of liquid having the...
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4262205 |
Fluorometer with high sensitivity and stability
The present inventive fluorometer provides a rapid means for accurate sample quantitative measurements by making instrumental calibration measurements during sample equilibration time. Increased...
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4255053 |
Photometer including auxiliary indicator means
An apparatus for an optical measurement of the concentration of substances ncluding at least one monochromator means, one photometer means and one optometric means. A further reference indicator...
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