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7403292 Fluid analysis element and fluid analysis apparatus  
A fluid analysis element includes: a semi transmissive/semi reflective first reflector; a transmissive apertured member, having a plurality of apertures, with diameters sufficiently smaller than...
7388676 Image processing apparatus and refractive index distribution measuring apparatus  
An image processing apparatus is disclosed which can produce refractive index distribution data with high accuracy without limiting directions in which transmitted wavefronts are measured. The...
7388669 Method of generating interferometric information  
The present invention provides methods for generating interferometric information. Interferometric information from refractively scanned interferometers can contain errors due to...
7330276 Optical interference substrate, target detecting substrate, target detecting apparatus, and target detecting process  
Provided are target detection substrate for target detecting apparatuses capable of detecting various targets such as pathogens, biological substances and toxic substances without using a costly...
7286243 Beam profile complex reflectance system and method for thin film and critical dimension measurements  
Device and method for measuring complex reflectance using a light source for generating a light beam with known polarization state, a lens for focusing the beam onto a sample surface such that...
7268888 Compensation of refractivity perturbations in an interferometer path  
In general, in one aspect, the invention features a method that includes directing a first measurement beam along a first path contacting a measurement object to determine a first interferometric...
7206078 Non-destructive testing system using a laser beam  
A noninvasive testing system using a method of testing a device under test by providing a beam of light from a light source having a first wavelength, and in a first beam instance imposing the beam...
7164480 Compensation for effects of mismatch in indices of refraction at a substrate-medium interface in non-confocal, confocal, and interferometric confocal microscopy  
An interferometric microscope for making interferometric measurements of locations within an object that is in a medium, there being a mismatch between indices of refraction of said object and said...
7130060 Refractive index determination by micro interferometric reflection detection  
A method and an apparatus for absolute refractive index measurements are disclosed, wherein a beam of spatially coherent laser light is directed perpendicularly on to a side of a capillary tube (...
7103276 Optical band scanning monitor system and method  
A scanning optical monitoring system and method are appropriate for high speed scanning of a WDM signal band. The system and method are able to identify dropped channels or, more generally,...
7094595 Label-free high-throughput optical technique for detecting biomolecular interactions  
Methods and compositions are provided for detecting biomolecular interactions. The use of labels is not required and the methods can be performed in a high-throughput manner. The invention also...
7062110 Sensor device  
The present invention relates to a sensor device and method for measuring a property associated with the introduction of or changes in a chemical, biological or physical stimulus in a localized...
7050176 Sensor assembly  
The present invention relates to a sensor assembly and method for measuring changes in dimension and/or composition of a sensor component (and associated factors) caused by the introduction of or...
7046373 Interferometric system for the simultaneous measurement of the index of refraction and of the thickness of transparent materials, and related procedure  
Interferometric system for the simultaneous measurement of the index of refraction and of the thickness of transparent materials with a single measurement operation. The system employs an...
7042574 Compensating for effects of non-isotropic gas mixtures in interferometers  
Methods and apparatus for reducing the effects of non-isotropic gas distributions on interferometry measurements are disclosed.
7025800 Methods of measuring the diffusion rate and partition coefficient of an analyte into a polymer and methods of forming a filter media  
A method of determining the diffusion rate of a given analyte into a polymer film using an optical waveguide interferometer is disclosed. A method of forming a filter media by selecting a polymer...
7019847 Ring-interferometric sol-gel bio-sensor  
A biosensor embodying the invention includes a sensing volume having an array of pores sized for immobilizing a first biological entity tending to bind to a second biological entity in such a...
6992777 Birefringent Mach-Zehnder interferometer  
An interferometer uses birefringent elements for splitting and combining beams of orthogonal polarization, and for changing the relative phase between the orthogonally polarized beams. A...
6970249 Plasmon resonance phase imaging  
A device for measuring simultaneously the phase at each point of an image formed by light reflected from a sample in which the phase has been modified by plasma resonance in a thin conducting...
6940601 Method and apparatus for estimating chromatic dispersion in fibre bragg gratings  
The present invention provides a method and apparatus for obtaining a measure of the chromatic dispersion of a fibre bragg grating, the method comprising: disposing the grating in a reflection arm...
6924895 Sensor for optically sensing air borne acoustic waves  
The present invention relates to an optical sensor of air borne acoustic waves. The sensor comprises means for producing mutually coherent optical sampling and reference beams, which may be...
6856384 Optical metrology system with combined interferometer and ellipsometer  
An interferometer and ellipsometer are combined in a metrology tool to measure the step height of a sample, which may include transparent layers. The metrology tool includes a shared light source...
6842256 Compensating for effects of variations in gas refractivity in interferometers  
Methods and system for compensating for effects of changes and variations of gas refractivity in a measurement and/or reference beam path of an interferometer are disclosed.
6836337 Non-invasive blood glucose monitoring by interferometry  
The glucose concentration in the bloodstream is directly correlated to the concentration of glucose in the aqueous humor. Furthermore, variation in the glucose concentration in the aqueous humor...
6809828 Universal detector for biological and chemical separations or assays using plastic microfluidic devices  
An on-chip interferometric backscatter detector (OCIBD) makes use of plastic substrates in which a rectangular sample channel is formed. While any plastic material can be used to form the channel...
6806962 Tilted interferometer  
The invention comprises methods and apparatus for reducing sub-harmonic cyclic errors by rotating by a small angle an interferometer or elements thereof. The rotation of the interferometer or...
6801321 Method and apparatus for measuring lateral variations in thickness or refractive index of a transparent film on a substrate  
A method or apparatus for measuring lateral variations of a property such as thickness or refractive index of a transparent film on a semiconductor, in a region of repeated patterning comprises:...
6785001 Method and apparatus for measuring wavelength jitter of light signal  
An apparatus for detecting wavelength change of a first light signal comprises an amplitude splitting interferometer and a detector. The amplitude splitting interferometer comprises first and...
6771376 Sensor platform, apparatus incorporating the platform, and process using the platform  
A sensor platform for use in sample analysis comprises a substrate ( 30 ) of refractive index (n 1 ) and a thin, optically transparent layer ( 32 ) of refractive index (n 2 ) on the substrate, (n 2...
6741362 Method, system, and computer program product for determining refractive index distribution  
The present invention provides a method and system for determining three-dimensional refractive gradient index distribution. The method and system of the present invention determine inhomogeneity...
6714306 Sensor for optically sensing air borne acoustic waves  
The present invention relates to an optical sensor of air borne acoustic waves. The sensor comprises means for producing mutually coherent optical sampling and reference beams, which may be...
6710865 Method of inferring optical parameters outside of a measurement spectral range  
The present invention provides a method for inferring optical parameters of a sample in a predictive spectral range by use of the known values of the optical parameters in a predetermined...
6678056 Jamin-type interferometers and components therefor  
A retroreflector has three mutually-orthogonal reflective surfaces arranged around an optical axis. The reflective surfaces stop short of the optical axis to provide a central region of the...
6657731 Coated optical microcavity resonator chemical sensor  
A miniaturized chemical sensor features an optical microcavity coated with a surface layer, and a waveguide that evanescently couples light into the microcavity. The surface layer is adapted to...
6576430 Detection of ligands by refractive surface methods  
Methods for detection and analysis of allosteric receptor/ligand binding by changes in surface refractive index are provided. When analyzed by surface plasmon resonance, binding of such allosteric...
6559951 Air refractometer  
An optical measuring light path formed by a vacuum-side laser beam (Pa) as a reference standard and an optical measuring light path formed by a gas-side laser beam (Pb) as a dimension to be...
6556306 Differential time domain spectroscopy method for measuring thin film dielectric properties  
A non-contact, free-space method for determining the index of refraction of a thin film at a desired angular frequency. The method includes generating an input desired-frequency pulse and an...
6545763 Method for measuring a thickness profile and a refractive index using white-light scanning interferometry and recording medium therefor  
A method and a recording medium for measuring three-dimensional thickness profile and refractive index of transparent dielectric thin-film with some patterns or not, which is fabricated in the...
6538746 Method and device for measuring absolute interferometric length  
A single laser is stabilized sequentially in time with respect to different wavelengths in conjunction with a continuous, preferably linear, wavelength transition for absolute optical...
6529279 Interferometer and method for measuring the refractive index and optical path length effects of air  
Apparatus and methods particularly suitable for use in electro-optical metrology and other applications to measure and monitor the refractive index of a gas in a measurement path and/or the change...
6525826 Interferometer and method for measuring the refractive index and optical path length effects of air  
Apparatus and methods particularly suitable for use in electro-optical metrology and other applications to measure and monitor the refractive index of a gas in a measurement path and/or the change...
6525825 Interferometer and method for measuring the refractive index and optical path length effects of air  
Apparatus and methods particularly suitable for use in electro-optical metrology and other applications to measure and monitor the refractive index of a gas in a measurement path and/or the change...
6525820 Rayleigh scattering optical flux monitor  
A device for in situ real time monitoring of atomic and molecular fluxes by use Rayleigh scattering. The flux can be generated by an effusion cell during molecular beam epitaxy. The present device...
6512588 Method and system for correcting an interferometric angle measurement for the effects of dispersion  
A method and system for correcting an angle θ l indicative of a relative angular orientation of a measurement object for the effects of dispersion caused by gas along a measurement path...
6501550 Method for improving the accuracy of measurements made using a laser interferometer  
The object of this invention is to provide a method for improving the accuracy of measurements, distance measurements in particular, made using a laser interferometer ( 1, 2 ). The method according...
6441907 High accuracy ring laser interferometer using an external cavity ring laser  
An optical sensing apparatus for use in a ring laser interferometer measuring a physical quantity of an object includes a ring laser cavity formed by several internal mirrors, of which at least two...
6417927 Method and apparatus for accurately compensating both long and short term fluctuations in the refractive index of air in an interferometer  
Methods and apparatus that combine dispersion interferometry with refractometry to compensate for refractive index fluctuations in the measurement path of a dispersion interferometer over both...
6407816 Interferometer and method for measuring the refractive index and optical path length effects of air  
Apparatus and methods particularly suitable for use in electro-optical metrology and other applications to measure and monitor the refractive index of a gas in a measurement path and/or the change...
6404505 Positioning stage system and position measuring method  
A positioning stage system includes a first stage movable at least in one of a rotational direction and a tilt direction, a second stage movable at least in X and Y directions, a measurement mirror...
6381025 Interferometric detection system and method  
An optical detection scheme for on-chip, high sensitivity refractive index detection is based on micro-interferometry, and allows for picoliter detection volumes and universal analyte sensitivity....
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