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6614528 |
Simultaneous double grating spectrometer with solid-state sensors or photomultiplier tubes
In order to extend the available spectral range and to optimize spectral resolution while retaining a compact spectrometer setup, two diffraction gratings are operated with congruent focal curves...
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6608679 |
Spectrophotometric analysis of input light
A micro spectrophotometer is monolithically constructed on a silicon substrate. The spectrophotometer includes a concave grating, which is used for dispersing optical waves as well as focusing...
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6606156 |
Spectrometer
A spectrometer is provided having a carrier, a light input for measurement light disposed on the carrier, a diffraction grating disposed on the carrier for dispersing the measurement light received...
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6603549 |
Convolution method for measuring laser bandwidth
A simple, reliable, easy to use method for calculating bandwidth data of very narrow band laser beams based on bandwidth data obtained with a spectrometer in circumstances where the laser...
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6601767 |
Ambient light sensing apparatus and method for a produce data collector
An ambient light sensing apparatus and method for a produce data collector which minimize false triggering of produce data collection. The apparatus includes an image capture device which has a...
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6603550 |
Device, kit and method for selecting personalized color cosmetics
A skin color measuring device is provided for use with a kit and method to measure skin shades at point-of-sale. The device includes a hand holdable housing encompassing a...
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6597452 |
Compact littrow-type scanning spectrometer
A Littrow-type spectrometer or monochromator using a folded light path to provide a compact optical instrument is disclosed. Light enters the instrument through an inlet aperture on a planar...
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6597763 |
Spectrometer arrangement
A spectrometer arrangement is disclosed for the determination of a radiation wavelength of radiation emitted from a radiation source to be measured. The arrangement includes a diffraction grating...
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6597451 |
Spectrometry measuring apparatus
In a spectrographic type spectrometry measuring apparatus employing a concave holographic diffraction grating or a replica thereof, a small-size and light-weight spectrometry measuring apparatus...
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6590648 |
Apparatus for measuring light
A measuring device for emitted, remitted or transmitted light from a measuring object is provided having an optical detector for capturing light to be measured, said light being radiated from the...
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6590649 |
Spectrophotometer
A spectrophotometer, comprising a housing in which a measuring system is arranged, which housing has a measuring opening, via which light is passed to the measuring system. The measuring system...
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6587198 |
Compact, solar spectrometer with sub-one-third angstrom resolution, faint-light compensation, and infrared and ultraviolet suppression
A compact, grating spectrometer ( 1 A) particularly adapted for visual observation of the sun's spectrum, from the Calcium K line to the Fraunhofer B line, at very high dispersion. The numerical...
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6583874 |
Spectrometer with holographic and echelle gratings
A spectrometer has higher resolving power without enlarging a size of the apparatus. This spectrometer has a slit board, a mirror, a collimator lens, a holographic grating, an Echelle grating, a...
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6583866 |
Spectrometric apparatus and method for measuring optical characteristics of an object
Optical characteristic measuring systems and methods such as for determining the color or other optical characteristics of teeth are disclosed. Perimeter receiver fiber optics preferably are spaced...
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6580509 |
High speed high resolution hyperspectral sensor
A high speed high resolution spectral sensor is formed by placing a cascade of chained wide field-of-view Mach-Zender interferometers inside a dispersive sensor between the sensor's grating and the...
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6580935 |
Method and system for stabilizing reflected light
A light stabilizing interface operatively linked to a collection wave guides for combining and stabilizing reflected light into a substantially even spatial distribution of light energy with a...
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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...
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6573990 |
Optical system providing concurrent detection of a calibration signal and a test signal in an optical spectrum analyzer
An optical system having a first order spectral range that is usable in an optical spectrum analyzer receives an broadband optical test signal and a optical calibration signal and couples the...
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6573989 |
Spectrometer
A spectrometer measures a spectrum of a light beam supplied from a light source so as to obtain fine information and coarse information of the spectrum easily. This spectrometer has a holographic...
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6570652 |
Athermalization and pressure desensitization of diffraction grating based spectrometer devices
A device for monitoring wavelength division multiplexed optical signals for use in an optical network and in an optical performance monitor. A device has a structure for supporting components of...
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6563854 |
Integrated external diode laser module particularly suited to Raman spectroscopy
An external cavity diode laser system which finds utility in many application areas, is particularly suited to fiber-coupled Raman Spectroscopy. A holographic transmission grating is disposed in...
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6552338 |
Ion photon emission microscope
An ion beam analysis system that creates microscopic multidimensional image maps of the effects of high energy ions from an unfocussed source upon a sample by correlating the exact entry point of...
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6552788 |
Hyperspectral imaging using linear chromatic aberration
An image acquisition system employs a spectral imaging system whose focusing optics provide a linear dispersion of color along a tilted focal plane which intercepts each spectral component at the...
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6549279 |
Method and apparatus for optical endpoint calibration in CMP
The invention provides calibrated spectrometers in a multi-spectrometer system, where chemical mechanical polishing endpoint detection is an issue. In one aspect of the invention, a spectrometer is...
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6538736 |
Concentric spectrometer with mitigation of internal specular reflections
Concentric spectrometers are plagued with internal reflections due to inherent nature of more than one optical surface possessing a common center of curvature. Reflections from optical surfaces...
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6525814 |
Apparatus and method for producing a spectrally variable radiation source and systems including same
An apparatus and method for producing a spectrally variable radiation source and systems including same is disclosed. An embodiment of a spectrally variable radiation source is disclosed including...
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6525815 |
Miniaturized Talbot spectrometer
A transform spectrometer determines the spectrum of light based on the Talbot effect. Light to be analyzed is passed through a spatially periodic object, thereby generating a series of Talbot...
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6522404 |
Grating based communication switching
An optical communication channel switch includes an aberration corrected spectrometer adapted for receiving plural channels of communication in a one dimensional array of sites where each site...
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6522403 |
Computed tomography imaging spectrometer (CTIS) with 2D reflective grating for ultraviolet to long-wave infrared detection especially useful for surveying transient events
The optical system of this invention is an unique type of imaging spectrometer, i.e. an instrument that can determine the spectra of all points in a two-dimensional scene. The general type of...
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6509968 |
Spectroscopic detection
In embodiments, spectroscopic monitor monitors modulated light signals to detect low levels of contaminants and other compounds in the presence of background interference. The monitor uses a...
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6507398 |
Czerny-turner spectroscope
A Czerny-Turner spectroscope according to the present invention includes: a collimator mirror having a toroidal surface for reflecting a beam of light passing through an entrance slit to a plane...
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6507022 |
Optical apparatus
An optical apparatus ( 10 ) is provided for non-destructive examination of characteristics of an object ( 102 ). The apparatus has a light source ( 28 ) for directing a beam of NIR Light towards...
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6501547 |
Hand-held produce recognition system and produce data collector
A hand-held produce data collector which captures wavelength information from a produce item. The produce data collector includes a light emitter for illuminating a produce item, collecting optics...
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6486948 |
Apparatus and methods relating to high speed Raman spectroscopy
Systems and methods for rapid Raman spectroscopy. The speed is improved by providing light from a sample to a light-dispersive element, such as a holographic grating, in a pattern that inversely...
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6483583 |
Near infrared spectrometry for real time analysis of substances
An apparatus and method for utilizing NIR spectrography for measuring major constituents of substances in real time includes a monochromator or other sensor having no moving optical parts. At least...
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6483581 |
Raman system for rapid sample indentification
A hand-held material identification apparatus 10 uses a spectrograph and detector array detecting a Raman spectrum produced by a sample illuminated by a laser source to recognize a variety of...
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6480275 |
High resolution etalon-grating monochromator
A high resolution etalon-grating monochromator. A preferred embodiment presents an extremely narrow slit function in the ultraviolet range and is very useful for measuring bandwidth of narrow band...
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6469785 |
Optical detection device based on semi-conductor laser array
The invention relates to an optical detection device for chemical analyses, comprising at least one light source, at least one photoelectric detection unit and at least one measuring cell, one or...
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6457644 |
Item checkout device including a bar code data collector and a produce data collector
An item checkout device which combines a produce data collector with an optical bar code data collector. The item checkout device includes a housing, a bar code data collector within the housing,...
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6455842 |
Micromonochromator and method for producing same
A micromonochromator is formed on a substrate and includes a diffraction device ( 6 ) associated with an entry that includes at least one entry point and an exit that includes at least one exit...
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6452675 |
Thin-film spectrometer with transmission grid
A spectrometer fitted with a thin light guide layer in a stratification manufactured by thin-film technology, said light guide being sandwiched between two cover layers of lower index of...
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6452674 |
In-situ wave correction apparatus
A wavelength correction apparatus automatically corrects a deviation of a testing wavelength from a reference spectrum analyzer installed on-site. The apparatus is constructed of a reference light...
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6433869 |
Wavelength measurement by dispersion timing
A novel wavelength measurement method wherein an optical pulse is launched into a dispersive medium with known dispersion properties, such as a dispersion compensating fibre or a dispersion...
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6424416 |
Integrated optics probe for spectral analysis
Percentage concentrations of constituents or color components of a sample are determined using a spectral analyzer with a wide illumination spot size and detector. The analyzer irradiates the...
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6421990 |
Measuring device for measuring components in and/or properties of crop material
A self-propelled crop harvester or one of the train of towing vehicle and towed implement for processing harvested crop are equipped with a measuring device for the measurement of components in...
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6414753 |
Low stray light czerny-turner monochromator
A monochromator is provided which reduces the amount of stray light striking the detector of the monochromator. A light source is provided which directs light to a source mirror. The source mirror...
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6411382 |
Monochromator and spectrometric method
The monochromator and the spectrometric method are disclosed wherein the measured beam converted into a parallel beam by a first collimator is diffracted by a plane diffraction grating, then the...
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6404492 |
Light source apparatus and measurement method
An acousto-optic tunable filter 4 including: an acousto-optic crystal 41 ; an acoustic wave driver 42 ; and a piezoelectric transducer 43 , is provided in front of a light source section 2 ...
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6398914 |
Method and device for process control in cellulose and paper manufacture
In the production of de-inked pulp, measuring devices are used to register spectral and/or physical characteristic values of a starting material. These values are then fed to a neural network, by...
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6400396 |
Displaced-beam confocal-reflection streak lindae apparatus with strip-shaped photocathode, for imaging very small volumes and objects therein
An imaging system for detecting the contents of a turbid medium which is at least partially transmissive of light. The system includes a light source for producing a series of discrete pulse beams...
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