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4786170 |
Apparatus for the graphic representation and analysis of fluorescence signals
An apparatus for the graphic representation and analysis of fluorescence signals that can be employed for the analysis of the decay behavior of pulses in fluorometry. The object of providing an...
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4779982 |
Spectrofluorophotometer with monitor detector for light source
A spectrofluorophotometer enabling spectrum correcting treatment to be done highly accurately, including an intercepter the incident light in a fluorescence detecting system, and an interceptor...
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4768513 |
Method and device for measuring and processing light
A method and device for measuring and processing light whereby laser light is irradiated onto positions of an organism which has been injected with a fluorescent substance having a strong affinity...
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4768390 |
Instrument for measuring the photosynthetic activities of plants
An instrument (2) for simultaneously measuring a plurality of parameters indicative of photosynthetic activity of a leaf in vivo comprises: (a) a gas tight chamber (4) for enclosing the leaf...
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4768879 |
Method for measuring the size of objects in a fluid medium
A method for determining the size of moving objects present in a transparent or translucent fluid medium comprises illuminating a zone of the suspension with monochromatic light, collecting...
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4755049 |
Method and apparatus for measuring the ion implant dosage in a semiconductor crystal
A technique for measuring the ion implant dosage involves method and apparatus for directing pulses of coherent radiation from a laser to the surface of a semiconductor that has been subjected to...
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4753530 |
Analytical optical instruments
An optical measuring system for measuring in situ by means of one or more fiber-optic probes reflection absorption fluorescence, phosphorescence and turbidity of a fluid or (for all but the last...
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4750837 |
Fluorometer with reference light source
There is disclosed herein a reference system for a fluorometer designed to detect very low levels of materials tagged with fluorophores. There is also disclosed an optical system for use in such a...
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4745285 |
Multi-color fluorescence analysis with single wavelength excitation
A method for determining one or more characteristics of particles using multiple fluorescence analysis comprises directing an incident light beam at the particles under analysis. The particles...
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4724326 |
Off-chip time-delayed integration area array Fraunhofer line discriminator
An apparatus for determining the fluorescence of materials in a scene which includes optical means to collect radiation from the scene. Means are provided to divide the collected radiation into...
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RE32598 |
Feature extraction system for extracting a predetermined feature from a signal
A fluorescence spectrophotometer in which the optical system for the excitation monochromator includes an arrangement for forming an image of the exit slit of the monochromator adjacent a first...
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4718761 |
Instrument for concurrently measuring ultra-high-speed light signals on a plurality of channels
An instrument concurrently measuring the ultra-high-speed light signals on a plurality of channels, and consisting of a streaking tube, optical means, deflection voltage generation means, a...
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4717828 |
Laser communication system
A laser communication system in which a filter-detector is provided which has a high acceptance angle and a narrow bandwidth. The filter-detector contains vaporized selected atomic species or a...
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4715708 |
Particle analyzing apparatus with index projecting optical system for detecting a focusing state of the measuring system
In an apparatus for analyzing a particle flowing in a flow section of a flow cell, at least two non-parallel index beams are projected onto the flow cell to detect a focusing state of a measuring...
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4710635 |
Dual laser excitation from single laser source
A dual laser excitation apparatus comprises a first laser for providing a first beam of light with a plurality of energy lines. A filter or wavelength disperser is included for dividing the first...
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4699512 |
Device for measuring fluorescence polarization
This invention relates to a device for measuring fluorescence polarization, which permits to measure the degree of fluorescence polarization in a short time and also its variations in time. In...
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4693377 |
Diamond separation using raman scattering
A method for separating diamonds from gangue in which discrete units of gangue are passed through a beam of laser radiation capable of causing Raman spectral activation. The scattered radiation is...
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4691110 |
Laser spectral fluorometer
In order to improve the sensitivity and the spectral resolution in measuring the luminescence of diverse sample materials, adapted optical imaging relationships at variable excitation output are...
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4690558 |
Method of laser emission spectroscopical analysis and apparatus therefor
In a method of laser emission spectroscopical analysis, wherein a light emitted from the surface of a sample when a laser beam is irradiated onto the surface of the sample is spectroscopically...
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4686371 |
Apparatus for measuring fluorescence decay characteristics of materials
The invention provides an apparatus for measuring fluorescence characteristics of a sample material located at a sample station (3) comprising a fluorescence photon-event receiving means (9), an...
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4681444 |
Automatic wavelength calibration apparatus
A self-contained automatic computer controlled system for checking and recalibrating the wavelength scale of both monochromators of a fluorescence spectrophotometer is described. No operator...
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4676640 |
Fluctuation analysis for enhanced particle detection
An improvement is disclosed in a method for measuring intensity fluctuations of an electromagnetic signal of wavelength between about 350 nm to 1200 nm from a liquid medium. The improvement...
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4675529 |
Fluorescent spectral analysis apparatus
A fluorescent spectral analysis apparatus comprises a source of a laser beam, and first and second optical fibers to be inserted in an endoscope with forward ends extended from a distal end of the...
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4675300 |
Laser-excitation fluorescence detection electrokinetic separation
An electrokinetic process and apparatus employing coherent radiation-excited fluorescence for detection is disclosed. In a preferred embodiment, the support liquid is a chiral liquid and the...
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4673289 |
Optical device with a high collection efficiency and cytofluorimeter making use of the same
Optical device with a high collection efficiency and cytofluorimeter using the same. This device permits the light excitation of a flow of material directed along an axis and able to emit light...
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4659921 |
Ultrafast gated light detector
A light detector which can be gated on and off over an ultrashort time window, such as in picoseconds or femtoseconds, is disclosed. The light detector includes, in one embodiment, an input slit...
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4652128 |
Method of performing continuous on-line laser emission spectroscopic analysis on a flowing fluid sample by laser and apparatus therefor
A focusing lens having a focal length f is provided at a position spaced a distance L apart from a substance to be measured in the fluid state, the relationship between L and f is controlled, so...
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4647199 |
Automatic shutter system
A software controlled automatic shutter is described which minimizes ultraviolet irradiation damage to optical components from a high intensity spectrophotometric light source. The shutter...
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4647202 |
Spectrophosphorimetry
A spectrophosphorimeter with a single spectrometer so as to obviate the need of a couple of spectrometers of conventional spectrophosphorimeters, wherein one spectrometer is operated as an...
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4645342 |
Method of laser emission spectroscopic analysis of steel and apparatus therefor
When a light emitted during the irradiation by a laser beam onto the surface of steel is spectrally separated and elements contained in the steel are analyzed quantitatively: an infrared pulse...
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4643571 |
Current control system for spectrophotometers
It has been shown that the use of a shutter to cut off the light beam entering the optical system of a fluoresence spectrophotometer will reduce UV deterioration of the components in the optical...
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4641032 |
Process for the determination of traces of uranium in solution by time resolution spectrofluorimetry
Process for the determination of traces of uranium in solution by the spectrofluorimetry method. The fluorescence of the uranium molecules in the solution is excited by a pulsed laser shot. The...
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4630925 |
Compact temporal spectral photometer
A temporal spectral photometer for use in obtaining spectral and temporal information simultaneously of an ultrafast pulse of luminescent light emitted from a sample upon excitation thereof...
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4626684 |
Rapid and automatic fluorescence immunoassay analyzer for multiple micro-samples
An apparatus uses a rapid and efficient method for conducting fluorescence measurements, such as immuno assay, of a plurality of samples of a substance using pulsed or continuous light energy,...
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4625114 |
Method and apparatus for nondestructively determining the characteristics of a multilayer thin film structure
Nondestructive characterization of each of the layers (d n ) of a multilayer thin film structure (25) is obtained by directing a first beam of radiation (40) into an optical coupler (37) having a...
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4609991 |
Automated system for determining the molecular weight and/or concentration of macromolecules via sedimentation equilibrium
An automated system for measuring the concentration gradient of centrifuged solute and directly calculating the molecular weight and/or sedimentation coefficient of an optically absorbing solute....
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4609286 |
Dispersion prism for separation of wavelengths of spectrally rich light in a flow cytometry apparatus
A flow cytometry apparatus for determining one or more characteristics of particles or the like flowing in a liquid stream includes a nozzle for generating a liquid flow stream for moving particles...
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4606636 |
Optical apparatus for identifying the individual multiparametric properties of particles or bodies in a continuous flow
Apparatus for identifying multiparametric properties of particles, comprising: a non-divergent quadric reflector, a transparent capillary tube passing through the focus of said reflector, ...
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4601537 |
Apparatus and methods for forming images and for optical demultiplexing
An apparatus for illuminating and forming an image of a specimen has a transparent specimen-supporting surface and a fiber-optic bundle divided into illumination fibers which illuminate the surface...
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4599512 |
Laser induced phosphorescence uranium analysis
A method is described for measuring the uranium content of aqueous solutions wherein a uranyl phosphate complex is irradiated with a 5 nanosecond pulse of 425 nanometer laser light and resultant...
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4597392 |
Arrangement for measuring diffusing particles
An arrangement for measuring diffusing particles has at least one monochromatic radiation source and a light measuring device, as well as at least one material limited particle-permeable indicator...
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4597933 |
Radiative opacity and emissivity measuring device
An apparatus for measuring the emissivity and opacity coefficients of a test plasma. The apparatus includes a target comprising a support structure of a carrier material with an asymmetrical sample...
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4594511 |
Method and apparatus for double modulation spectroscopy
A spectroscopic technique in which the sample under investigation is probed with a generally monochromatic beam of light which has been modulated at two distinct modulation frequencies. The double...
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4586819 |
Laser Raman microprobe
A laser Raman microprobe separates a laser beam reflected by a sample and a Raman scattered light generated by the sample by a filter which transmits or reflects a light in a predetermined...
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4585344 |
Discharge cell for optogalvanic spectroscopy having orthogonal relationship between the probe laser and discharge axis
Disclosed is a method and apparatus for an optogalvanic spectroscopy system. Orthogonal geometry exists between the axis of a laser probe beam and the axis of a discharge created by a pair of...
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4573796 |
Apparatus for eliminating background interference in fluorescence measurements
The disclosure is directed to an apparatus for eliminating background interference during fluorescence measurements in a multiple laser flow cytometer. A biological particle stained with...
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4572668 |
Apparatus and method for photoluminescent analysis
An optical system is disclosed which significantly enhances the throughput of a grating spectrometer intended to determine impurity concentrations on the surface of semiconductor materials (usually...
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4572667 |
Fluorescent air data measurement device
Induced fluorescence of air molecules is used to determine air data parameters such as barometric altitude. The air molecules at a sample location are caused to fluoresce by means of a suitable...
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4569592 |
Plasma monitor
A plasma monitor which measures the distribution of particular chemical species (atom, molecule, ion) in plasma generated inside an instrument making use of the plasma. Laser light having a...
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4564598 |
Limited volume method for particle counting
A method and apparatus for determining the presence of particles in a fluorescent dispersion which exceed either a predetermined fluorescence intensity or size are disclosed. The method and...
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