Matches 401 - 450 out of 868 < 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 >
Match Document Document Title
5844681 Spectral densitometer  
A spectral densitometer system reads dosimeter cards. The cards contain bar codes with information for calibration of the system and for identification of the cards (serial numbers for each card)....
5844124 Method and apparatus for measuring odorant concentration and oderant adding system  
A method, an apparatus, and an integrated system using the apparatus for measuring a concentration of odorant in odorized gas which is produced by adding the odorant to un-odorized gas comprised...
5841533 Intracavity laser spectroscopy for high sensitivity detection of contaminants in gas  
Contaminants are detected optically at concentrations below 1 part-per-million (ppm) and extending to a level approaching 1 part-per-trillion (ppt) by using intracavity laser spectroscopy (ILS)...
5835210 Multi-pass spectrometer  
A multi-pass spectrometer. Light from a source is expanded and collimated with a collimating optic into a collimated beam. The collimated beam illuminates a dispersing optic such as a grating from...
5831729 Spectrometer  
It is the objective of the present invention to provide a spectrometer of which the modulation transfer function (MTFs) in a spectral direction and in a direction perpendicular to the spectral...
5828452 Spectroscopic system with a single converter and method for removing overlap in time of detected emissions  
A spectroscopic system that processes spatially dispersed electromagnetic emissions at a number of wavelengths from a test material. The spectroscopic system includes a converter that generates an...
5828451 Spectral imaging system and method employing an acousto-optic tunable filter for wavelength selection with increased field of view brightness  
An acousto-optic tunable filter (AOTF) has one or more optical wavelength passbands dependent on the frequency or frequencies of a radio frequency signal applied thereto. A radio frequency...
5828061 Apparatus for detecting a rotation angle of a diffraction grating  
In order to improve the accuracy of the absolute value of a wavelength of diffraction light in a diffraction grating, a gas absorption line resulting from an absorption cell 8 is used as a...
5825486 Electro-optic module especially suitable for use in a spectrophotometer  
A spectrophotometer which is highly manufacturable at minimum cost nevertheless provides precision of measurement of spectra components of light which is projected therein by maintaining precise...
5822060 Method of detecting sample substances and fluorescence spectrometer using the method  
A method of detecting sample substances separated by an analytical separation technique, for example liquid chromatography or capillary electrophoresis, using electromagnetic radiation, and a...
5817007 Method and an apparatus for determining the content of a constituent of blood of an individual  
A method and an apparatus for determining the content of a constituent of blood of an individual are disclosed. In the method a whole blood stream is extracted from a blood vessel of said...
5815261 Correlation spectrometer with high-resolution, broad-band optical characteristics  
A spectrometer that determines a spectral correlation between an optical signal and a reference spectra over a broad spectral range while maintaining a relatively high resolution. The spectrometer...
5812262 Waveguide for radiation detection system  
An ultra violet radiation detector comprises a slice of silica (10) having an entrance slit (18) from which radiation diverges to a curved reflective face (20, 22) which reflects it to a planar...
5801826 Spectrometric device and method for recognizing atomic and molecular signatures  
Complex atomic or molecular spectral signatures embedded in interfering background spectra are very rapidly recognized by a spectrometric device that employs precise sweep rate control with signal...
5796479 Signal monitoring apparatus for wavelength division multiplexed optical telecommunication networks  
A detector array spectrometer simultaneously monitors wavelength, power, and signal-to-noise ratio of wavelength division multiplexed (WDM) channels in telecommunication networks. A spectrometer...
5796096 Fabrication and applications of long-lifetime, holographic gratings in photorefractive materials  
Substantial improvements in photorefractive device lifetimes are provided by control of electron migration which results in the decay of gratings in photorefractive materials due to diffusion and...
5793486 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...
5792049 Spectroscopic system with disposable calibration device  
A disposable calibration device is used to calibrate a spectroscopic measurement system which transmits radiation to a material or tissue in order to effect measurements such as bilirubin...
5784159 Optical spectrum measuring apparatus  
An optical spectrum measuring apparatus is disclosed that is able to take measurements at high speed. An encoder is connected to the rotational axis of a motor. A counter counts the number of...
5784158 Broad spectrum spectrometer apparatus  
This invention is for a broad spectrum apparatus that provides a substantially uniform spectral response from a spectrometer by introducing one or more elements whose combined response or...
5777733 Spectrometer with wavelength calibration  
The present invention refers to a spectrometer device comprising a monochromator means, a light-measuring means receiving light from said monochromator means, and a calibration means comprising a...
5774209 Transmittance cell for spectrophotometer  
A hand-held portable spectrophotometer that is contained in an enclosed housing and includes a source of illumination and a spectrograph, along with a transmittance cell and a reflectance cell. The...
5771094 Film measurement system with improved calibration  
The pixel position-to-wavelength calibration function of film measurement devices such as spectroscopic ellipsometers and spectroreflectometers may shift due to temperature and humidity changes and...
5768040 Wide field-of-view imaging spectrometer  
The invention provides an imaging spectrometer that provides a wide field-of-view camera and spectrometer for spectral imaging of a large two-dimensional area of the Earth's surface from an...
5767966 Optical spectrum measuring device  
Light source 1 emits light composed of various wavelength components from an emission end 1a. An optical fiber 2 receives the light from one end portion 2a and emits the light from the other end...
5767965 Apparatus and method for driving diffraction gratings  
A grating drive apparatus for use in a multiple-grating spectrometer is provided. The spectrometer has an entrance slit, an exit port, an optical path between the entrance slit and the exit port,...
5764352 Process and apparatus for spectral reflectance and transmission measurements  
Optical measuring apparatus for determining chromaticity of thin films on a substrate includes a light source for illuminating the substrate and a measuring apparatus for dispersing light into...
5757483 Dual beam optical spectrograph  
A dual beam optical spectrograph includes a housing defining an internal chamber that is divided into two subchambers with a partition. A liner array detector such as a charge coupled detector...
5754290 Monolithic spectrometer  
A monolithic spectrometer is disclosed for use in spectroscopy. The spectrometer is a single body of translucent material with positioned surfaces for the transmission, reflection and spectral...
5751421 Near infrared spectrometer used in combination with a combine for real time grain analysis  
An apparatus and method for combining NIR spectography with a combine for measuring major constituents of harvested grain in real time includes a monochromator having no moving optical parts. The...
5751420 Spectropotometer with a field restrictor and its application to a colorimeter  
A zoom lens is provided between the sample and the slit of a spectrophotometer to change the size of the image of the sample on the slit plane. The picture of the sample is taken by the zoom lens...
5751415 Raman spectroscopy apparatus and method for continuous chemical analysis of fluid streams  
Apparatus and methods for analyzing the chemical composition of fluid streams using Raman spectroscopy are disclosed. The invention is particularly useful in continuously analyzing a fluid stream...
5748310 Optical spectrum separation apparatus  
A high-precision spectrum separation apparatus enables to generate an output beam having a specific wavelength from a multi-wavelength input beam. The input beam is focused on a diffraction grating...
5748308 Programmable standard for use in an apparatus and process for the noninvasive measurement of optically absorbing compounds  
The present invention provides a programmable filter for use as a standard in correlation spectrometers. Also provided is the use of the programmable standard in a process for determining the...
5748296 Method and device for in situ quantification, by reflectometry, of the morphology of a localized region during etching of the surface layer of a thin-film structure  
An illumination beam is sent onto a localized region of the surface layer of a thin-film structure which is being etched in a vacuum processing chamber. The reflective light beam is sent through a...
5747807 Diode laser-pumped laser system for ultra-sensitive gas detection via intracavity laser spectroscopy (ILS)  
Contaminants are detected optically at concentrations below 1 part-per-million (ppm) and extending to a level approaching 1 part-per-trillion (ppt) by using intracavity laser spectroscopy (ILS)...
5747247 Spectroscopic helicase assay  
The invention provides spectroscopic methods for detecting helicase activity and inhibitors of helicase activity. Samples are assayed for helicase activity by: (a) incubating a mixture of the...
5742389 Spectrophotometer and electro-optic module especially suitable for use therein  
A spectrophotometer which is highly manufacturable at minimum cost nevertheless provides precision of measurement of spectra components of light which is projected therein by maintaining precise...
5739905 Spectrophotometer with electronic temperature stabilization  
In order to preclude unreliable or inaccurate spectrophotometric measurements which can be caused by thermal effects (expansion/contraction) of components of the spectrophotometer, such as the...
5737076 Method and apparatus for determining substances and/or the properties thereof  
The invention relates to a procedure for determining an identification of a sample of material, or its properties. Electromagnetic radiation from a radiation source (1) is reflected or transmitted...
5731874 Discrete wavelength spectrometer  
A diffraction grating, diffraction structure or Fresnel zone device is formed on a first substrate for diffracting light components of different wavelengths. An array of detectors is formed on a...
5724135 Hyper-spectral imaging using rotational spectro-tomography  
A rotational hyper-spectral imager is disclosed. The rotational hyper-spectral imager collects substantially all available photon flux emitted by an object being detected and analyzed and allows...
5723864 Linear cavity laser system for ultra-sensitive gas detection via intracavity laser spectroscopy (ILS)  
Contaminants are detected optically at concentrations below 1 part-per-million (ppm) and extending to a level approaching 1 part-per-trillion (ppt) by using intracavity laser spectroscopy (ILS)...
5721614 Optoelectronic camera with anti-reflective coating having a continuously variable thickness and method of making same  
A spectral imager or spectrophotometer-type optoelectronic camera including an optical system, a CCD-type set of photosensitive elements (3) at the focus of the optical system, a transparent...
5719672 Echelle spectrometer with a shaped oriented slit  
An improved echelle spectrometer comprises a slit in light blocking plate, an echelle grating, and a detector array. The slit is shaped and oriented to align an image of a light beam projected...
5717487 Compact fast imaging spectrometer  
A spectrometer construction incorporates a single lens system (11) to both focus light input to the spectrometer on a diffraction grating (9) and to focus the light dispersed by the diffraction...
5714392 Rapid thermal anneal system and method including improved temperature sensing and monitoring  
A broadband pyrometer is used for sensing temperature of a semiconductor wafer in an RTA system in association with a monochromator to cancel the backside characteristics of the semiconductor...
5710627 Wavelength-scanning mechanism and method for spectrometer  
A wavelength-scanning mechanism for a spectrometer utilizes an eccentric disc cam driven by a pulse motor to pivot a diffraction grating with a contact bar fixed thereto. A light source supplies...
5706083 Spectrophotometer and its application to a colorimeter  
A spectrophotometer for measuring a two-dimensional area or a spot area in a rather broad surface of a sample, where the spectrophotometer is provided with a camera for taking the picture of the...
5684582 Spectrophotometry  
A robust spectrophotometer (also known as a color spectrometer or colorimeter) is self contained in a housing which is adapted to be held-held and has all of the electrical, optical and electro...
Matches 401 - 450 out of 868 < 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 >