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6075593 |
Method for monitoring and controlling laser shock peening using temporal light spectrum analysis
A method for quality assurance of a laser shock peening process of workpieces includes measuring and recording or temporal light intensity data over a short period during the duration of a plasma...
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6075592 |
Fiber-optics based micro-photoluminescence system
Spatially resolved photoluminescence (PL) apparatus is used for the non-destructive characterization of a semiconductor sample. PL excitation from a diode laser is transmitted through a dichroic...
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6075607 |
Method for estimating durability of optical member against excimer laser irradiation and method for selecting silica glass optical member
A method is provided for estimating durability of an optical member against pulsed excimer laser beam irradiation. The method includes the steps of (a) irradiating a test sample for the optical...
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6071748 |
Light detection device
A high-throughput light detection instrument and method are described. Confocal optics structure enables exclusive light detection from a sensed volume in a composition.
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6069688 |
Method for producing continuous in-like kappa measurements for papermaking pulps
A method for the continual, real-time, in-situ generation of a Kappa number used by a process control system to control the delignification of papermaking pulps is disclosed. The method converts a...
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6069695 |
Process and arrangement for laser-induced spectral analysis
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6069689 |
Apparatus and methods relating to optical systems for diagnosis of skin diseases
Apparatus for diagnosis of a skin disease site using spectral analysis includes a light source for generating light to illuminate the disease site and a probe unit optically connected to the light...
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6067156 |
Wavelength calibration and tracking methods and apparatus
Calibration wavelengths are injected into an optical detection system preferably at a point after laser rejection filtration, enabling the known spectral content of the calibration radiation to...
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6061641 |
Method for improving instrument response
This invention pertains generally to a method for improving the accuracy of particle analysis under conditions of discrete particle loading and particularly to a method for improving...
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6055051 |
Method for determining surface properties of microparticles
Second harmonic generation (SHG), sum frequency generation (SFG) and difference frequency generation (DFG) can be used for surface analysis or characterization of microparticles having a...
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6052177 |
Apparatus used in determining the degree of completion of a processed medium
An apparatus is disclosed that develops output signals representing the degree of finished state of a processed medium during a process operation, such as the lignin content of wood pulp during...
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6038363 |
Fiber-optic spectroscopic probe with reduced background luminescence
A fiber-optic spectroscopic probe minimizes unwanted sources of luminescence through the use of one or more non-luminescing beam-redirecting elements operative to aperture share the optical...
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6025202 |
Self-assembled metal colloid monolayers and detection methods therewith
A biosensor based on complexes between biomolecule receptors and colloidal Au nanoparticles, and more specifically, colloid layers of receptor/Au complexes that can be used to detect biomolecule...
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6015479 |
Thin-layer spectroelectrochemical cell
An electrochemical cell comprises a cell body having a sample chamber, a working electrode fitted through the cell body and extending into the sample chamber; a counter electrode extending through...
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6008896 |
Method and apparatus for spectroscopic analysis of heterogeneous materials
A method and apparatus for rapid in-situ spectroscopic analysis of unknown heterogeneous materials is disclosed. The apparatus uses a high power pulsed laser whose beam is focused on the material,...
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6008897 |
Method and apparatus for materials analysis by enhanced laser induced plasma spectroscopy
A method and apparatus is disclosed for enhanced laser-induced plasma spectroscopic analysis of unknown heterogeneous materials. The apparatus has high power pulsed lasers with their beams focused...
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6008894 |
Remote adjustable focus Raman spectroscopy probe
A remote adjustable focus Raman spectroscopy probe allows for analyzing Raman scattered light from a point of interest external probe. An environmental barrier including at least one window...
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6008889 |
Spectrometer system for diagnosis of skin disease
Apparatus for diagnosis of a skin disease site using spectral analysis includes a light source for generating light to illuminate the disease site and a probe unit optically connected to the light...
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6002478 |
System and method of determining trace elements in high viscosity liquids, and powders, utilizing laser-ablation
Disclosed are a laser ablation system and method for determining the presence of trace elements in liquid samples such as oils, and/or in powder samples. A sample containing microporous membrane is...
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6002471 |
High resolution scanning raman microscope
A method of obtaining high-resolution spectroscopic information from a scanning microscope. An optical beam is directed at a sample and light emitted from the sample (e.g., from Raman scattering or...
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5999250 |
System for detecting fluorescing components in aerosols
An electro-optical aerosol characterizing system includes a continuous wave laser for generating two beams in the red wavelength range, intersecting a particle stream at slightly spaced apart...
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5994150 |
Optical assaying method and system having rotatable sensor disk with multiple sensing regions
An optical assaying method and system having a movable sensor is described. In one aspect, the present invention is a sensing system having a rotating sensor disk coated with indicator dyes...
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5990484 |
Method and apparatus for measuring fluorescence
The present invention relates to a method and apparatus for efficiently measuring the lifetime of the fluorescence emitted from a fluorescent material in response to pulsed light. The measuring...
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5991020 |
Method for determining the concentration of atomic species in gases and solids
Method for determining the concentration of atomic species in gases and solids. Measurement of at least two emission intensities from a species in a plasma containing the species after a sufficient...
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5986756 |
Spectroscopic probe with leak detection
An optical probe assembly, which may be used with or without optical fibers for remote operation, incorporates a leak-detecting capability. A source such as a laser is used for optically exciting...
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5986757 |
Correction of spectral interferences arising from CN emission in continuous air monitoring using inductively coupled plasma atomic emission spectroscopy
Introduction of sample stream air into argon inductively coupled plasma permits continuous monitoring of hazardous air pollutant metals in combustion flue gases. In addition to entrained...
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5979423 |
Fiber-optic gas composition sensor for exhaust gases
An on-board gas composition sensor is disclosed for monitoring oxygen content levels in the exhaust gas (24) of an internal combustion engine (4). The gas composition sensor includes a sensor body...
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5978083 |
Imaging and characterisation of the focal field of a lens by spatial autocorrelation
Method and system for realizing a correlation, at least in space, of the focal fields of at least two electromagnetic beams at the focus of an optical focusing element, wherein a specific spatial...
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5974860 |
Oil detecting system
An oil detecting system for detecting a leakage oil by optical fluorescence measurement means even in the presence of external fluorescent light, for example, from parts and equipments of a vehicle...
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5973779 |
Fiber-optic imaging probe
A fiber-optic imaging probe is disclosed for use in dynamic light scattering applications. The probe includes two monomode optical fibers and two GRIN lenses to form a pair of identical fiber-lens...
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5956138 |
Multiple-zone emission spectra collection
The collection of spectral information is enhanced through the formation of multiple zones of excitation and emission. In one embodiment, a plurality of the zones are located within a sample...
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5953119 |
Optical shutter assembly for trace element detector
A shutter assembly for a trace element detector includes a shutter wheel having at least one window, and a drive mechanism coupled to the shutter wheel, wherein the drive mechanism rotates the...
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5949532 |
Method and apparatus for Raman correlation spectroscopy
A method and an apparatus for determining diffusion parameters, concentration, size or flow behavior of particles in a sample, exciting light of a light source being directed into the sample, Raman...
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5948272 |
System and method for detecting and neutralizing microorganisms in a fluid using a laser
A system and method is disclosed for detecting and neutralizing disease producing organisms in a body fluid of a patient or in any fluid used for biological experimentation, testing, or production....
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5946089 |
Plasma spectrometer with shutter assembly
Apparatus for optical analysis of a sample, including an energy source, which generates a pulse of energy that is incident on the sample, causing the sample to emit radiation characteristic of the...
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5946090 |
Spectrometric method and apparatus for spectrometry
A spectrometric method is disclosed which uses a novel tunable laser as a monochromatic light source to carrying out spectrometry efficiently. As the tunable laser, a tunable laser is used which...
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5946431 |
Multi-functional photometer with movable linkage for routing light-transmitting paths using reflective surfaces
A multi-functional photometer includes a scanning mechanism having a housing that bears a movable linkage. The linkage is coupled to an optical scanning head and incorporates light-transmitting...
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5943129 |
Fluorescence imaging system
A fluorescence imaging system for epi-illumination wherein the usual dichroic beamsplitter is replaced by a polarizing beamsplitter (PBS). The sample is excited with light that is linearly...
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5943128 |
Grating-based optical probe
A dispersive grating, preferably in the form of a volume-phase holographic optical element, or HOE, is used as a beam combiner in an optical measurement probe of the type used to analyze induced...
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5936728 |
Flash photolysis method and apparatus
Flash photolysis is carried out in a microscope imaging system while maintaining continuous and superimposed imaging of the target area to which the flash is directed as well as its surroundings....
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5933233 |
Method and device for the determination of material-specific parameters of one or a few molecules by means of correlation spectroscopy
A method for the determination of material-specific parameters of one or a few molecules by means of correlation spectroscopy wherein the molecule or molecules in a sample in which the molecule(s)...
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5929985 |
Multispectral imaging probe
A multispectral imaging probe delivers a range of wavelengths of excitation light to a target and collects a range of expressed light wavelengths. The multispectral imaging probe is adapted for...
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5926271 |
Laser-induced fluorescence detector having a capillary detection cell and method for identifying trace compounds implemented by the same device
A laser-induced fluorescence detector comprises a laser beam emitting device, a dichroic mirror to deviate the laser light orthogonally, a lens with a small numerical aperture, a ball lens, a...
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5926270 |
System and method for the remote detection of organic material in ice in situ
A system for remotely detecting organic material in a volume, such as an layer, in situ, includes a light source, an optical receiver and a control subsystem. The light source generates a laser...
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5920399 |
Multispectral imaging method and apparatus
A multispectral imaging method and apparatus adapted for use in determining material properties, especially properties characteristic of abnormal non-dermal cells. A target is illuminated with a...
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5919710 |
Optical method for quantitating dissolved oxygen in fuel
A method for the quantitative determination of dissolved oxygen in a liquid fuel includes the steps of doping a sample of the fuel with a preselected concentration of a probe material including a...
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5917607 |
Surface plasmon sensor for multiple channel analysis
A surface plasmon sensor includes a prism, a metal film which is formed on one face of the prism and is brought into contact with a sample, a light source emitting a light beam, an optical system...
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5914247 |
Method and system for detecting fecal and ingesta contamination on the carcasses of meat animals
A method and apparatus for detecting ingesta or fecal contamination on an animal carcass using fluorescent spectroscopy is disclosed. The surface of the carcass is illuminated with UV or visible...
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5909278 |
Time-resolved fluorescence decay measurements for flowing particles
Time-resolved fluorescence decay measurements for flowing particles. An apparatus and method for the measurement and analysis of fluorescence for individual cells and particles in flow are...
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5905570 |
Remote electro-optical sensor system for water quality monitoring
An improved water quality monitoring system and method. The system utilizes reflectance radiometers to provide multiple wavelength measurement of downwelling irradiance and/or upwelling radiance....
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