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5680209 |
Spectroscopic systems for the analysis of small and very small quantities of substances
A spectroscopic system for the analysis of small and very small quantities of substances makes use for the purposes of energy transfer of cone-shaped aperture changers (14, 15) which are arranged...
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5677769 |
Optical sensor utilizing rare-earth-doped integrated-optic lasers
An integrated-optic sensor includes a waveguide made from a substrate that is doped with rare-earth elements. A beam of light propagating along the waveguide excites these elements, causing them to...
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5675411 |
Broad-band spectrometer with high resolution
A spectrometer provides a substantially simultaneous electronic output over a broad spectral range while maintaining a relatively high resolution. The spectrometer uses a fiber-optic transformer...
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5673109 |
System and method for increasing the efficiency of a raman gas analysis system
A Raman gas analysis system uses a half-wave plate to match the polarization of Raman scattered light emitted from a gas analysis cell to a preferred polarization orientation of a diffraction...
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5657121 |
Spectrum measuring device eliminating polarization dependency
A spectrum measuring device for measuring optical spectrum of input light includes first and second double-image elements which separate input light to be measured into two polarized wave...
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5657116 |
Ocular lens measuring apparatus
An apparatus for measuring the optical characteristics of an ocular lens includes a first measuring system for detecting light transmitted through the ocular lens and through a predetermined...
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5652681 |
Grism (grating-prism combination)
A dispersive optical element called a "grism" (50) which has characteristics of both a prism (56) and a grating (62). The grism (50) consists of a prism (56) with a grating (62) disposed adjacent...
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5644396 |
Spectrograph with low focal ratio
A spectrograph having a collimating lens unit, a reflective diffraction grating, a focusing lens unit, and a light detector is provided. The collimating lens unit has at least one optical element...
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5642192 |
Dual spectrometer color sensor
Disclosed is an apparatus for measuring on-line the color and color-related properties of a moving sheet. Contrast ratio reflectance measurements are made for providing opacity corrections...
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5642189 |
Color sensor simulating standard source illuminant
Disclosed is an apparatus for measuring on-line the color and color-related properties of a moving sheet. Contrast ratio reflectance measurements are made for providing opacity corrections...
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5638173 |
Spectrum splitting spectroscopic apparatus
In a Raman spectrometer having a charge-coupled device (CCD) detector (24), an incoming beam (36) containing a spectrum of Raman scattered light is dispersed by a diffraction grating (44)....
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5615010 |
Diode array spectrophotometer
A diode array spectrophotometer has an entrance slit apparatus, a diffraction grating, a diode array and a casing to define the relative positions of these elements. The casing and the holder for...
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5615008 |
Optical waveguide integrated spectrometer
An analytical system uses a waveguide having embedded Bragg gratings to redirect light from the waveguide outwardly for analytical determination by detectors. The analytical system can be a...
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5608521 |
Polarization compensated imaging spectrometer
A polarization compensated imaging spectrometer and method are set forth which include a compensating mirror. The mirror is selected to have a surface coating and angle of incidence to impart...
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5606413 |
Real time spectroscopic imaging system and method
To dramatically reduce image data processing requirements in spectroscopic imaging systems, an optical filter is alternatingly tuned to a pair of selected passband wavelengths related to an...
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5604589 |
Diode array spectrophotometer
A diode array spectrophotometer has an entrance slit apparatus, a diffraction grating, a diode array and a casing to define the relative positions of the elements. The casing and the holder for...
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5596411 |
Integrated spectroscopic ellipsometer
An optical inspection apparatus is disclosed for generating an ellipsometric output signal at a plurality of wavelengths, each signal being representative of an integration of measurements at a...
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5596407 |
Optical detector for echelle spectrometer
A solid-state detector for use in an atomic spectrometer comprises a plurality of arrays of sensing elements, or pixels, each of the arrays being positioned along and on the locations of spectral...
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5596406 |
Sample characteristic analysis utilizing multi wavelength and multi angle polarization and magnitude change detection
An optical measurement device is disclosed for evaluating the parameters of a sample. The device includes a polychromatic source for generating a probe beam. The probe beam is focused on the sample...
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5592291 |
Spectrophotometer
In a spectrophotometer according to the present invention, electric signal from a photo-detector is converted into digital data by an A/D convertor and stored in a memory. In the process of...
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5589717 |
Compact spectrum analyzer module
A compact spectrum analyzer module suitable as a subsystem in optoelectronic instrumentation is disclosed which analyzer module employs two mirror surfaces to provide a folded optical path to and...
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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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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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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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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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5502560 |
Analytical sensor using grating light reflection spectroscopy
A optical analytical method and apparatus for measuring concentrations of materials in liquids and gases is described. The method is based upon measurements of light reflection from diffraction...
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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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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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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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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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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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5483335 |
Multiplex spectroscopy
Analysis of energy emanating from a source having a focal plane by converting the energy from the source into modulated spectral components simultaneously distributed according to frequency along a...
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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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