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5585919 |
Error minimization apparatus and method for real-time spectral deconvolution of chemical mixtures
An apparatus and method are described for determining the relative concentrations of the N constituent chemical components of a chemical combination. The spectral response, C i , of the composite...
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5579106 |
Method and apparatus for providing astigmatism-reduced images with spectroscopic instruments
An apparatus for providing an astigmatically-reduced image with a spectroscopic instrument is disclosed which comprises a collimator which collimates electromagnetic radiation; a cylindrical mirror...
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5578818 |
LED point scanning system
An LED point imaging scanner for stimulating and for reading fluorescent and reflective signal radiation from a target sample is disclosed. The LED light source is mounted on a scan head and is...
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5565983 |
Optical spectrometer for detecting spectra in separate ranges
A spectrometer includes a pair of crossed reflective gratings to effect a spectrally dispersed beam that is focussed to an array detector. The second grating is a plural grating with a surface...
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5559597 |
Spectrograph with multiplexing of different wavelength regions onto a single opto-electric detector array
An optical spectrograph utilizes a plurality of holographic transmission optical gratings operative to receive an incoming source of light to be analyzed and diffract the light such that different...
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5557404 |
Spectrophotometer with a system for calibrating a monochromator
Irregular mechanical imperfections caused by constituent parts of a monochromator in connection with wavelength setting are compensated by calibrating the monochromator according to the present...
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5532818 |
Difference dispersive double-path monochromator having wavelength-independent imaging point
Incoming light is reflected by a first parabolic mirror for incidence as parallel rays of light on a diffraction grating, the reflected light therefrom is incident on a second parabolic mirror, and...
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5533145 |
Continuous two dimensional monitoring of thin webs of textile materials
An apparatus monitors a web of textile material which is also processed by a textile processing machine. The web is in motion relative to an imaging unit, and the imaging unit repetitively scans at...
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5528363 |
Integrated device for instantaneous detection and identification of an entity
This integrated device for instantaneously carrying out qualitative and quantitative identification of one or more physicochemical entities contained in or on a sample and capable of producing one...
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5517302 |
Multispectral reflectometer
A reflectometer for measuring absorption of light in selected regions of the light spectrum by a diffuse reflector. The reflectometer is adapted to precisely measure absorption resulting from the...
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5506149 |
Spectroanalytical system and method
A spectroanalytical system includes housing structure with vent structure open to the atmosphere; radiation dispersing apparatus in the housing structure for dispersing radiation into a spectrum...
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5504575 |
SLM spectrometer
A SLM spectrometer is provided that employs an entrance slit or a collimator to provide parallel rays of radiation to a prism which disperses the incident radiation into an associated wavelength...
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5497230 |
Spectroradiometer
Light having a wavelength equal to or less than the cut-off wavelength of a sharp-cut filter is cut off so that an output of a photo-sensitive device corresponds to a stray light component when a...
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5497231 |
Monochromator having an oscilliating mirror beam-diffracting element for spectrometers
The monochromator has, as a beam-diffracting element, a scanning mirror (3) which is fastened on a vibratory spring, preferably a spring-steel strap (8), clamped on one side. The vibratory spring...
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5495331 |
Dual-beam polychromator
The present invention refers to a dual-beam polychromator comprising a reflecting dispersion grating, a first entrance slit for a first ray bundle, a second entrance slit for a second ray bundle...
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5495332 |
Arrangement for sensing the wavelength shift of light from a polychromatic light source
An arrangement for sensing the wavelength shift of light from a polychromatic light source features a tilted concave holographic reflection grating that diffracts light from the light source and...
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5493393 |
Planar waveguide spectrograph
A spectrograph usable as a demultiplexer/detector in a wavelength division multiplexing optical system. The spectrograph comprises a planar waveguide and a detector array. The planar waveguide has...
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5491344 |
Method and system for examining the composition of a fluid or solid sample using fluorescence and/or absorption spectroscopy
A method and system for examining the composition of a fluid or solid sample using fluorescence and/or absorption spectroscopy. In one embodiment, the system is adapted for use in examining liquid...
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5489980 |
Apparatus for rapid and accurate analysis of the composition of samples
An apparatus comprising two light sources, a composite detector, a fixed grating, two independent slits and a mask with a multiplicity of slits analyzes the spectral composition of samples rapidly...
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5488474 |
Hadamard phasing in a multisource array
An apparatus and method for minimizing the amplitude range in a time domain signal incorporating a plurality of periodic electromagnetic waves. One embodiment of the invention is a...
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5485268 |
Multiplex spectroscopy
Method and apparatus for analyzing energy emanating from a source by converting energy from the source into spectral components distributed according to frequency along a flat field, combining the...
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5483339 |
Spectrophotometer and radiometric measurement apparatus
A handheld portable spectrophotometer is provided including keys for input of instructions by a user, an illuminator for illuminating a sample, and a spectral analyzer for separating light...
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5483337 |
Spectrometer with selectable radiation from induction plasma light source
An atomic emission spectrometer includes an induction coupled plasma generator and a detector system for detecting the radiation relative to spectral wavelength. A first mirror is on the...
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5477322 |
Spectrophotometer with light source in the form of a light emitting diode array
In a spectrophotometer, a light source is provided in the form of a multiplicity of light emitting diodes which transmit light through an entrance slit to irradiate an oscillating grating. The...
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5475212 |
Apparatus for imaging multiple radiation beams
A radiation imaging method and system for use in various imaging techniques includes a source of radiation at first and second wavelengths. A first radiation target array receives the radiation...
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5473427 |
Spectrophotometer
A spectrophotometer using a charge coupled device array as an image receiver characterised in that an image of its entrance slit is tilted with respect to columns of pixels in the charge coupled...
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5471321 |
Color image reading device
A color image reading apparatus is provided with a line sensor, an imaging optical system and a blazed diffraction grating. A color image is read by the line sensor through a rotatable reflective...
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5452085 |
Spectrographic astigmatism correction system
An optical input system for correcting astigmatism introduced by off-axis reflectors in a spectrograph includes an aspheric mirror producing a correcting factor which compensates for the...
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5448351 |
Echelle polychromator
An Echelle polychromator 50 has disposed upstream thereof a pre-monochromator 14 comprising a prism 20. The linear dispersion of the pre-monochromator 14 is variable by varying the angular...
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5446534 |
Broad band waveguide spectrometer
A spectrometer for analyzing a sample of material utilizing a broad band source of electromagnetic radiation and a detector. The spectrometer employs a waveguide possessing an entry and an exit for...
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5442440 |
Spectroscope
A spectroscope or spectrometer for detecting a driving position of a main wavelength dispersive device using a diffraction line produced in that light from a light source having a narrow wavelength...
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5438407 |
Spectrometer and apparatus including the spectrometer
A wavelength sub-dispersive device receives light from a standard light source producing light having a narrow bandwidth and having an intensity greater than that of light to be detected. The...
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5436723 |
Spectroscopic analysis
A spectroanalytical system with radiation dispersing apparatus for dispersing radiation into a spectrum for concurrent application to an array of exit ports; sample excitation apparatus for...
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5436720 |
Acousto-optical laser discriminator
An apparatus, using two acousto-optical tuned filters for determining the wavelength and angle of approach of a light wave.
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5434666 |
Acousto-optic spectral manipulator
A spectrometer is adapted to observe discrete wavelengths or spectral regions of a sample. The spectrometer includes a light source having spectral characteristics depending on the presence of a...
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5432334 |
Method and apparatus for imaging multiple radiation beams
A radiation imaging method and system for use in various imaging techniques includes a source of radiation at first and second wavelengths. A first radiation target array receives the radiation...
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5424827 |
Optical system and method for eliminating overlap of diffraction spectra
An optical system and a method for separating overlapping spectra from a diffraction grating and an imaging spectrometer with increased free spectral range are disclosed. The light from a...
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5424826 |
Wideband optical micro-spectrometer system
A wideband optical micro-spectrometer system for detecting the intensity of light as a function of wavelength. The device employs multiple optical micro-spectrometers generating adjacent spectra...
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5420681 |
Modular multiple spectral imager and spectral imager
A multiple spectral imager includes three modular imaging spectrometers, each having a respective collimator, dispersing element, and imaging system. Each collimator includes a pair of parabolic...
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5420682 |
Method and apparatus for compensating spectral data with a color sensor
A method and apparatus for interpreting spectral data in an optical sensor for a variety of uses, such as the manufacture of paper. A probe is inserted into paper pulp during the manufacturing...
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5416579 |
Method for determining concentration in a solution using attenuated total reflectance spectrometry
A method for analyzing fluids, particularly the solute concentration in liquids which are dense or viscous and are only slightly transparent to light, which utilizes an attenuated total reflectance...
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5416577 |
Color sensor for optically measuring consisting and brightness of materials
A method and apparatus for normalizing spectral data for an optical sensor. The sensor is comprised of a probe, a color sensor, a series of reflective targets, and a data processing means. Before...
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5412469 |
Optical spectrum analyzer and encoder using a modulated phase grating wherein said grating diffracts the wavelength as a function of the magnetic field
An apparatus and method of wavelength detection and parameter sensing uses a variable magnetic field applied to a Faraday effect thin magnetizable film to perform spectral analysis based on...
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5402227 |
High resolution multiple channel imaging spectrometer
A high resolution multiple channel imaging spectrometer employing a pair of reflective gratings to create and separate, respectively, a spectrum of discrete spectral channels having high throughput...
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5394237 |
Portable multiband imaging spectrometer
A light-weight, portable spectroradiometer provides a real-time data acquisition capability from 0.3 μm to 3.0 μm with selectable integration periods, and operates through a Centronics parallel...
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5384656 |
Astigmatism corrected gratings for plane grating and spherical mirror spectrographs
A modified diffraction grating having a predetermined amount of astigmatic power correction is substituted for the plane diffraction grating in an Ebert type spectrograph having a single concave...
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5374988 |
System for non-contact identification and inspection of color patterns
An optical inspection system which inspects for the presence of color defects in a stream of material (e.g. carpeting, fabric, wall paper, printed matter, or a series of discrete objects) traveling...
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5373359 |
Ellipsometer
To sense characteristics of a sample, an ellipsometer includes a pivotal diffraction grating positioned to receive white light from the analyzer without further focusing of the light after the...
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5371586 |
Low aberration diffraction grating system
A light analysis system is disclosed and comprises a source of substantially collimated light to be analyzed. The source comprises a sample excited by a collimated laser light source, and further...
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5369484 |
Multiple discrete analyzer test apparatus and method
A computer based system for testing an optical monitoring system includes a program having program instruction and optical monitoring system parameters, for implementing a plurality of tests of an...
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