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6664539 |
Methods for evaluating gamma detectors and gamma detector instrument response, particularly for use in investigation emissions from spent nuclear fuel rods
A method of investigating the response of an instrument to gamma emissions using a source package includes providing a source package on one side of a collimator including an aperture and a...
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6661963 |
System and method for calibrating and operating a semiconductor variable optical attenuator
A method and apparatus for controlling the attenuation level of a semiconductor VOA relative to an absolute temperature of the VOA without the use of a power monitor is provided. The method...
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6657189 |
Maintaining measurement accuracy in prompt gamma neutron activation analyzers with variable material flow rates or material bed depth
A method of maintaining measurement accuracy of specific constituents in prompt gamma neutron activation analyzers in a flow of bulk material having a known range of flow rates. The method...
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6651481 |
Method and apparatus for characterizing pressure sensors using modulated light beam pressure
Embodiments of apparatuses and methods are provided that use light sources instead of sound sources for characterizing and calibrating sensors for measuring small pressures to mitigate many of the...
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6653634 |
Method of measuring length with scanning type electron microscope
A method of measuring length with a scanning type electron microscope (SEM) includes the steps of: performing length measurement with the SEM of an already know pattern provided in advance in a...
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6629041 |
Methods to significantly reduce the calibration cost of multichannel measurement instruments
The prior art knows two different approaches to calibration of multichannel instruments, viz., the so-called physical and statistical calibration methods. The new methods translate the difficult...
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6626569 |
Quality assurance system for a medical linear accelerator
An image-based quality assurance (IBQA) system is provided for performing quality assurance testing of a medical linear accelerator photon beam. The IBQA system includes an imaging phantom...
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6621078 |
Ion trapping device
When ions are introduced from outside into the ion trap space, a static electric field having equi-voltage surfaces concave to the entrance hole is formed in the ion trap space. For ions obliquely...
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6621574 |
Dual function safety and calibration accessory for raman and other spectroscopic sampling
This invention relates to an accessory for incorporation into Raman and other spectroscopic instruments for combining shuttering and spectroscopic calibration functions. The accessory is comprised...
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6617574 |
Apparatus for in-situ thickness and stoichiometry measurement of thin films
An apparatus and method for using α-particle energy loss to measure the thickness and stoichiometry of films grown by molecular beam epitaxy and other methods. The apparatus for measuring the...
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6617599 |
Apparatus and method for automated indexing of a nuclear gauge
The invention provides a method and apparatus for facilitating calibration of a nuclear gauge by automating the movement of a source rod between a plurality of source rod positions. The apparatus...
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6614527 |
Spectral bandwidth calibration of an optical spectrum analyzer
In an optical spectrum analyzer, the respective wavelength bandwidths of the optical spectrum analyzer are determined at the wavelengths of the reference lines and used as calibration data for...
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6608302 |
Method for calibrating a Fourier transform ion cyclotron resonance mass spectrometer
A method for improving the calibration of a Fourier transform ion cyclotron resonance mass spectrometer wherein the frequency spectrum of a sample has been measured and the frequency (f) and...
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6603119 |
Calibration method for quantitative elemental analysis
The present invention provides a method of calibrating an analytical tool. The method, in a illustrative embodiment, includes preparing a calibration standard having a known concentration of an...
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6600805 |
Method and apparatus for determination of properties of food or feed
Properties of a medium of food or feed, such as the fat content of meat, are determined by the use of dual X-ray absorptiometry with dual energy levels. Substantially, the entire medium is scanned...
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6591021 |
Method and apparatus for correcting the gray levels of images of a digital infrared camera
To correct the gray levels or pixel intensities of images provided by a digital infrared camera having a two-dimensional array of detector elements with non-sensitive areas therebetween, correction...
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6585410 |
Radiant temperature nulling radiometer
A self-calibrating nulling radiometer for non-contact temperature measurement of an object, such as a body of water, employs a black body source as a temperature reference, an optomechanical...
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6576892 |
Infrared imaging device
An infrared imaging device includes a board which is movable inside the infrared imaging device, plural kinds of magnification lenses, and plural kinds of infrared light radiation parts which...
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6573498 |
Electric measurement of reference sample in a CD-SEM and method for calibration
The present invention relates to a system and method for calibrating a scanning electron microscope (SEM). The method comprises measuring an electrical characteristic of a calibration standard...
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6573497 |
Calibration of CD-SEM by e-beam induced current measurement
The present invention relates to a system and method for calibrating a scanning electron microscope (SEM). The method comprises measuring an electrical characteristic of a calibration standard...
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6570150 |
Image processing apparatus
An image processing apparatus includes a sensor including a sensing region which senses the image of an object, and a correcting circuit which performs first processing which corrects image data...
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6570157 |
Multi-pitch and line calibration for mask and wafer CD-SEM system
The present invention relates to a system and method for calibrating a scanning electron microscope (SEM). The method comprises using a reference having multiple features of different dimensions...
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6559655 |
System and method for analyzing agricultural products on harvesting equipment
A system for analyzing agricultural products on harvesting equipment includes a test chamber and a near infrared spectrometer disposed within a housing capable of being mounted on the harvesting...
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6559440 |
Method for calibrating a radiation detection system
An automatic and intuitive calibration method is provided for calibrating a radiation detection system for processing counts from a known radiation source. A probe is positioned near the radiation...
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6559447 |
Lightweight infrared camera
A lightweight camera or detector that does not require a shutter, chopper or thermoelectric stabilizer. Lightweight materials and lightweight packaging techniques are used, and in some embodiments,...
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6555832 |
Determining beam alignment in ion implantation using Rutherford Back Scattering
A back scattered ion receiver is mounted on the process chamber of an ion implanter to receive beam ions back scattered from a wafer mounted on the wafer holder in the chamber. Minima in the...
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6541763 |
Semiconductor gamma-ray camera and medical imaging system
A high-energy photon imaging system including an imaging head, a signal processor, a data acquisition system and an image processing computer. The imaging head includes a detector comprising a...
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6538250 |
Microbolometer focal plane array with controlled bias
A method and apparatus for controlling bias for an microbolometer focal plane array which includes use of one thermally-shorted microbolometer detector thermally shorted to the substrate upon which...
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6531285 |
Automated detection apparatus with a conveying means for test columns
An apparatus and method for detecting the presence of at least two predetermined known materials in a test sample are disclosed. The apparatus includes a sample addition station for adding a sample...
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6528803 |
Automated calibration adjustment for film dosimetry
The present invention provides a method of correcting errors in film dosimetry measurements arising from variations in radiographic film processing and manufacturing. The method includes: (1)...
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6521886 |
Method of monitoring changes in the detective quantum efficiency of an x-ray detector
Automated measurement of changes in detective quantum efficiency (DQE) within an x-ray detector. The calculation of relative DQE changes is limited to the measurement of two quantities, namely...
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6521893 |
Method and apparatus for improving image quality in positron emission tomography
A method and apparatus for improving the image quality of positron emission tomography is disclosed. This is achieved by analyzing individual photomultiplier tubes for true events. The apparatus...
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6512232 |
Method and apparatus for improving the sensitivity of a gamma camera
A method and apparatus for improving the sensitivity of a position sensitive gamma ray detector and gamma camera. To obtain good position resolution, small effective detector elements are required....
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RE37970 |
Pulse oximetry testing
A method and apparatus for testing a pulse oximeter which is based on the concept of an electrical interface between the testing instrument and the oximeter rather than an optical interface. The...
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6507018 |
Ditherless non-uniformity compensation for infrared detector arrays with recursive spatial low pass filtering
A non-dither spatio-temporal low pass filter method for compensating non-uniformity of the responses of detector elements of an infrared detector array. The methods can be used for one-dimensional...
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6502448 |
Chromatography detection system and method
A chromatography detection system can handle the flow from a chromatography column. The chromatography detection system has an injection valve and a detector for detecting emissions from a flowing...
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6498340 |
Method for calibrating mass spectrometers
A method whereby a mass spectra generated by a mass spectrometer is calibrated by shifting the parameters used by the spectrometer to assign masses to the spectra in a manner which reconciles the...
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6498041 |
Optical sensors for rapid, sensitive detection and quantitation of bacterial spores
Bacterial spores can be rapidly and sensitively detected and quantified based upon molecular recognition of unique chemicals in the spore coat. Spores can be detected and assayed based upon the...
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6490336 |
Phantom for measuring slice thicknesses, slice sensitivity profiles and the axial modulation transfer function in an X-ray computed tomography apparatus
A phantom for measuring slice thicknesses, slice sensitivity profiles and the axial modulation transfer function in an X-ray computed tomography apparatus contains a foil of a material that highly...
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6473205 |
Image sensor module adjustable in six degrees of freedom for use with an image acquisition device
An image sensor sub-assembly for a scanner or other image acquisition device includes an image sensor array that detects light imaged by a scanner optical system and an image sensor module that...
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6472659 |
Method for measuring ionic currents, and a catching device therefor
The invention relates to a novel method for measuring ionic currents when determining isotope ratios and suing a mass spectrometer. Two or more ionic currents are measured in parallel, that is to...
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6471916 |
Apparatus and method for calibration of a microarray scanning system
A microarray scanning system for conducting microarray experiments on a planar substrate includes an excitation radiation source, a detection system, and a computational device, the planar...
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6467952 |
Virtual blackbody radiation system and radiation temperature measuring system
A virtual blackbody radiation system ( 10 ) includes a light-emitting unit ( 1 ) including an LED driven by a fixed current, a light-receiving unit ( 2 ) including a sapphire rod, and an optical...
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6459482 |
Grainless material for calibration sample
The present invention provides SEM systems, SEM calibration standards, and SEM calibration methods that improved accuracy in critical dimension measurements. The calibration standards have features...
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6452164 |
Apparatus and method for calibrating gamma cameras
An apparatus and method used to calibrate a gamma camera include an energy source and intensity selector and an energy weighting device. The energy source provides an energy output, such as an...
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6437345 |
Sensing unit provided with separated detection light guiding
An optical sensing unit is provided which comprises at least one sample measurement cell, at least one excitation light source acting upon the or each measurement cell to provide one or more sensor...
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6437325 |
System and method for calibrating time-of-flight mass spectra
A time-of-flight mass spectra calibration technique uses time-of-flight mass spectrometer instrument operational parameters and known mass and measured time-of-flight data pairs to optimize values...
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6437347 |
Target locking system for electron beam lithography
An e-beam lithographic system capable of in situ registration. The system has an optics section such as a VAIL lens. A controllable stage moves a substrate with respect to the beam axis to place...
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6433333 |
Infrared sensor temperature compensated response and offset correction
A system and method are provided for use with an uncooled infrared sensor. The system and method include a temperature compensated performance algorithm which is utilized to provide temperature...
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6429425 |
Method for forming a calibation standard to adjust a micro-bar of an electron microscope
The invention relates to a method for adjusting a micro-bar of an electron microscope to increase the accuracy of the micro-bar. The method entails first forming a photo-resist layer on a...
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