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7620276 |
Optimized grating based biosensor and substrate combination
A grating-based biosensor is disclosed where the biosensor is constructed and arranged such that the grating lines of the sensor align with an optical axis of a birefringent substrate, so as to...
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7616309 |
Device for the positioning of optical elements with retractable stop
The invention relates to a device for the positioning of optical elements with retractable stop enabling accurate positioning of an optical element selected among a plurality of optical elements,...
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7616306 |
Compressive sampling and signal inference
An optical wavemeter includes a slit, a diffraction grating, a mask, a complementary grating, and a detector. A monochromatic source is incident on the slit. The diffraction grating produces an...
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7609381 |
Compact, high-throughput spectrometer apparatus for hyperspectral remote sensing
A spectrometer apparatus includes a refractor element, a slit, a detector, a diffraction grating, and a corrector lens. The refractor element includes a rear surface and a front surface. The slit...
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7609370 |
Single detector based dual excitation wavelength spectra display
A single detector based spectroscopy system using FAST (fiber array spectral translator) fibers and two excitation sources in conjunction with a holographic spectrum analyzer (HSA) to obtain...
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7605917 |
Spectrometer
A spectrometer 1 A is made up of: an optical body 10 within which a light separation path is set along which an object light to be separated propagates; a light entry slit 16 through which the...
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7605370 |
Microspectrometer gas analyzer
A robust, compact spectrometer apparatus for determining respective concentrations or partial pressures of multiple gases in a gas sample with single as well as multiple and even overlapping,...
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7604984 |
Spatially scanned optical reader system and method for using same
An optical reader system is described herein that uses a scanned optical beam to interrogate a biosensor to determine if a biomolecular binding event occurred on a surface of the biosensor. In one...
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7595877 |
Low profile spectrometer and raman analyzer utilizing the same
A spectrometer comprising a collimating element for receiving input light and collimating the same, a dispersive optical element for receiving light from the collimating element and dispersing the...
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7595876 |
Method and apparatus for estimating a property of a fluid downhole
A method for estimating a property of a fluid downhole is disclosed, the method including but not limited to exposing the fluid to light downhole; directing different wavelengths of light that have...
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7595875 |
Alignment systems for spectrometers
A spectrometer having a housing, where the housing also includes a structure located within the housing, the structure being adapted to hold a reflective dispersive element and being movable in a...
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7586596 |
Field folding optical method for imaging system
Apparatus for inspecting a surface of a sample, including a detector and folding optics. The folding optics are configured to receive radiation arising from a first region of the surface and from a...
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7583378 |
Spectrograph calibration using known light source and Raman scattering
A method is provided for calibrating a spectrometer device used for Raman scattering analysis. A predetermined dispersion curve for a diffraction grating or spectrograph of the spectrometer device...
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7579601 |
Spectrometer with moveable detector element
An optical spectroscopy tool is provided. In one embodiment a highly efficient means by which moderate resolution spectroscopy may be performed in the vacuum ultraviolet (VUV) is described. In one...
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7576856 |
Method and apparatus for estimating a property of a fluid downhole
A method and apparatus are provided for determining a property of a fluid downhole by using a tunable optical grating to collect a fluid's spectrum over a wavelength region of interest. A property...
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7564547 |
Spectroscopy system
Systems and techniques for improved spectroscopy. In some embodiments, mechanical and/or optical zoom mechanisms may be provided for monochromator systems. For example, movable detector systems...
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7561266 |
Calibrated spectroscopy instrument and method
A calibrated spectroscopy instrument and a method for calibrating a spectroscopy instrument are disclosed. The spectroscopy instrument includes a monochromator having a drive mechanism comprising a...
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7554667 |
Method and apparatus for characterizing hyperspectral instruments
A method and apparatus for characterizing the spectral response function of hyperspectral electro-optical instruments or imaging spectrometers are provided. The system includes a test instrument...
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7551276 |
Method and apparatus for detecting optical spectra
In a method and apparatus for detecting optical spectra, two or more partial beams are generated from an incident beam, each of said partial beams being assigned to a different spectral region. The...
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7548313 |
Compact and rugged imaging Raman spectrograph
A compact and robust imaging Raman spectrograph has a collimating input lens assembly, a spectral filter assembly, a transmission diffraction grating, a focusing lens assembly, and a light...
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7541600 |
Lithographic and measurement techniques using the optical properties of biaxial crystals
A method and apparatus for accurately retrieving the position of an optical feature. The method uses the optical properties of biaxial crystals to conically refract the optical feature and...
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7518722 |
Multi-channel, multi-spectrum imaging spectrometer
A multi-spectrum, multi-channel imaging spectrometer includes two or more input slits or other light input devices, one for each of two or more input channels. The input slits are vertically and...
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7515319 |
Lens-less spectrometer
A lens-less system for analyzing an optical spectrum includes a sophisticated volume hologram for separating an incident diffuse optical signal into wavelength channels without aid of an external...
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7515262 |
Crystal grating apparatus
Apparatus for analyzing light having at least one wavelength, the apparatus comprising: (a) a light deflector for deflecting the light so as to provide a deflected light beam characterized by at...
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7511813 |
Downhole spectral analysis tool
Spectral analysis system for downhole applications is provided utilizing an inorganic replica-type grating that is configured to operate as a diffractive element that provides broad spectral...
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7508508 |
Device and method for inspecting a hair sample
A device for inspecting a hair sample. The device comprises a measuring area configured to accommodate a hair sample and an imaging unit for receiving light flux reflected from the measuring area....
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7508506 |
Method and apparatus for performing spectroscopy downhole within a wellbore
An analysis system, tool, and method for performing downhole fluid analysis, such as within a wellbore. The analysis system, tool, and method provide for a tool including a spectroscope for use in...
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7505130 |
Static two-dimensional aperture coding for multimodal multiplex spectroscopy
A class of aperture coded spectrometer is optimized for the spectral characterization of diffuse sources. The instrument achieves high throughput and high spatial resolution by replacing the slit...
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7502109 |
Optical micro-spectrometer
An optical spectrometer having a multi-wafer structure. The structure may be fabricated with MEMS technology. The spectrometer may be integrated with a fluid analyzer. A reflective grating such as...
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7502108 |
Assembly and method for identifying coatings lying on the surface of components and for determining their characteristics
The invention is directed to an arrangement for detecting coatings which are arranged on surfaces of structural component parts or objects and for determining the chemical characteristics and...
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7495762 |
High-density channels detecting device
A high-density channels detecting device for detecting a sample is provided. The high density detecting-device has a light source for emitting a light beam, a collimator, a beam splitter, and a...
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7495761 |
Array detector coupled spectroanalytical system and graded blaze angle grating
A spectroanalytical system for receiving radiation to be analyzed along a first path includes a grating in the first path with periodic faceted grooves for spatially separating the radiation as a...
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7492453 |
Method and apparatus for detecting embedded material within an interaction region of a structure
A system and method processes a structure comprising embedded material. The system includes a laser adapted to generate light and to irradiate an interaction region of the structure. The system...
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7489398 |
Spectrophotometer
A spectrophotometer, for online non-destructive optical examination of fruit or vegetables or the like avoids saturation of the data level, or the data level being too small, due to changes in rate...
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7483135 |
Confocal spectrometer with astigmatic aperturing
A confocal spectrometer provides astigmatic optics which supply a monochromator or spectrograph with the image of a sample, with the astigmatic optics thereby providing separate first and second...
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7483134 |
Scanning monochromator with direct drive grating
A novel scanning monochromator uses a PM stepper-motor to directly drive a diffraction grating. By employing interpolated encoder feedback in combination with the PM stepper-motor feedback, a...
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7480048 |
Monochromator employing single grating volume holograms and method of use
The present invention is directed to a monochromator device which uses single grating volume holograms. The holograms collect light of varying wavelengths such as polychromatic light, and separate...
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7477381 |
Optical system and method for optically analyzing light from a sample
An optical system for analyzing light from a plurality of samples is provided. The optical system includes a plurality of holders adapted to have samples located therein, a collection lens, a...
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7471389 |
System and method for fiber array spectral translator based polymorph screening
The present disclosure describes methods and systems that combine Raman spectroscopy performed in a manner that utilizes one or more of widefield illumination, simultaneous multipoint Raman...
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7471386 |
System and method for spectral unmixing in a fiber array spectral translator based polymorph screening system
The disclosure relates generally to methods and apparatus for using a fiber array spectral translator-based (“FAST”) spectroscopic system for performing spectral unmixing of a mixture...
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7466410 |
Photonic-based sensors and methods for detecting analytes
Various embodiments of the present invention are directed to analyte detection methods and to photonic-based sensors that employ photonic crystal gratings to detect analytes. In one embodiment of...
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7458691 |
Holographic combiners for illumination of spatial light modulators in projection systems
Described is an optical device for combining multiple light sources in an optical projection system. One embodiment of the optical device includes at least two light sources having first and second...
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7456958 |
***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Method and apparatus for estimating a property of a fluid downhole
A method and apparatus are provided for determining a property of a fluid downhole by using a tunable optical grating to collect a fluid's spectrum over a wavelength region of interest. A property...
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7456957 |
Littrow spectrometer and a spectral domain optical coherence tomography system with a Littrow spectrometer
A compact conical diffraction Littrow spectrometer is disclosed. The distortion of the conically diffracted spectral component beams is compensated and as a result, the diffracted spectral beams...
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7456940 |
Methods and apparatus for locating and classifying optical radiation
Disclosed are methods and systems for locating and classifying optical sources. In one aspect, a pair of imaging spectrometers is orthogonally oriented relative to an optical axis to accommodate...
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7454094 |
Optical reader system and method that uses non-coherent illumination and angular filtering to interrogate a label independent biosensor
An optical reader system and method are described herein that directs a non-coherent light towards a biosensor, collects the non-coherent light which is reflected (or transmitted) from (or through)...
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7450230 |
Multi-channel imaging spectrometer
A multi-channel imaging spectrometer, comprising an image acquiring unit, an optical detection element, a dispersion element and a lens module comprising a collimating lens module and a focusing...
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7450018 |
Temperature warning device by deformation or expansion of a bolt and the device structure
Temperature sensor device that allows changes of temperature ( 14 ) to be detected, as the materials that form said device ( 1 ) are deformed, that consists of a body formed by two valves ( 2 ) and...
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7444196 |
Optimized characterization of wafers structures for optical metrology
A patterned structure in a wafer is created using one or more fabrication treatment processes. The patterned structure has a treated and an untreated portion. One or more diffraction sensitivity...
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7440158 |
Direct optical image projectors
An apparatus includes a reconfigurable spatial light modulator, a light source, and a transmission filter. The reconfigurable spatial light modulator is capable of producing spatially varying...
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