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6157032 |
Sample shape determination by measurement of surface slope with a scanning electron microscope
The shape of a sample is determined with a scanning electron microscope ("SEM") by using electron emission from a surface to measure its slope. A surface of a sample is placed in the SEM's electron...
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6145368 |
Method for calibrating rotary encoder with multiple calibration points
One embodiment of the present invention provides a method for calibrating a rotary encoder including a rotatable disk including at least two index points located along a circumferentially extending...
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6144031 |
Infrared video camera system with uncooled focal plane array and radiation shield
An infrared video camera system comprises an uncooled infrared sensor mounted and a thermally conductive thin walled radiation shield for shielding radiation from reaching an active surface of the...
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6142006 |
Method and apparatus for calibrating a glide head and detection system for a magnetic disk drive
A method and apparatus for calibrating a glide head and detector system performs a pre-screening to ensure the quality of the glide head and the piezoelectric sensor in the detection system. The...
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6141572 |
Process and system for simultaneously simulating arterial and non-arterial blood oxygen values for pulse oximetry
A problem in pulse oximetry is discriminating between arterial and non-arterial oxygen. Non-arterial oxygen can become detectable by an oximeter when a patient moves, obscuring the oximeter's...
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6127679 |
Thermal sensing system having a fast response calibration device
A thermal sensing system (10) including an array of photon detectors (14) produces a detector-dependent response to irradiation. Variations in individual detector characteristics produce a fixed...
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6125335 |
Wide field calibration of a multi-sensor array
A method has been developed to calibrate the relative radiation response of sensors in an array by substitutional analysis of the sensor outputs caused by a radiation field wider than the array....
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6104026 |
System for parallelizing the axes of a thermal image apparatus
In a system for parallel alignment of the axes of a thermal image apparatus, the IR beam path and the visual beam path extend along the same optical elements. A luminous point/four-quadrant sensor...
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6087656 |
Radiation detector system and method with stabilized system gain
A closed-loop stabilization system and method for a radiation detector system including a scintillator and a light sensing device for detecting the scintillation light produced in the scintillator...
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6080984 |
Semiconductor gamma-ray camera and medical imaging system
A high-energy photon imaging system includes an imaging head, a signal processor, a data acquisition system and an image processing computer. The imaging head includes a detector that includes a...
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6078042 |
Calibration standard for infrared absorption gauge
A calibration standard for use with an infrared optical absorption measurement gauge having an assembly with an optical interference filter (22) and one or more optical elements. The interference...
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6078388 |
Calibration system for spectroscopic detectors
A standardization device for calibrating a spectroscopic apparatus. The spectroscopic apparatus includes a light source, an optical device to be standardized, and a sensor. The standardization...
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6078390 |
Scanning system and method of operation for automatically setting detection sensitivity
An optical scanning system uses a low-resolution scanning operation, to automatically adjust the sensitivity of the system. The system performs a low-resolution scanning operation by scanning a...
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6072177 |
Gamma camera for PET and SPECT studies
A gamma camera is modified to perform PET studies as well as SPECT studies by utilization of the camera's SPECT electronics to likewise generate triggering pulse signals for photons indicative of a...
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6066847 |
Procedure for verifying the accuracy of non-invasive blood glucose measurement instruments
A procedure for verifying the accuracy of a non-invasive blood glucose measurement instrument utilizes in vitro or invasive measurement instruments, the accuracy of which is independently...
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6067156 |
Wavelength calibration and tracking methods and apparatus
Calibration wavelengths are injected into an optical detection system preferably at a point after laser rejection filtration, enabling the known spectral content of the calibration radiation to...
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6064068 |
System and method for monitoring the stability of a scintillation detector
A system for on-line monitoring the stability of a scintillation detector, comprises means providing two beams of gamma rays from a subsidiary source which are distinguishable because of their time...
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6064066 |
Bolometer autocalibration
A sensor (1400) with radiation detectors (1421-1422) with two or more bolometer or photoconductor elements and bias polarity switching of one element to emulate mechanical chopping of input...
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6061128 |
Verification device for optical clinical assay systems
A device and method for verifying correct performance of an optical clinical assay system is provided.
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6056433 |
Method and apparatus for infrared pyrometer calibration in a thermal processing system
A calibration instrument for calibrating a temperature probe, such as pyrometer, uses a stable light source and a filter to simulate a blackbody of a known temperature. An alignment tool aligns a...
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6054710 |
Method and apparatus for obtaining two- or three-dimensional information from scanning electron microscopy
A system for determining one or more critical dimension(s) of a semiconductor structure comprising a scanning electron microscope and a parallel distributed process operationally connected to an...
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6050725 |
Validation and calibration apparatus and method for nuclear density gauge
A cost effective, field-usable validation and calibration apparatus and method for nuclear density gauges comprises an absorption element, where the absorption element is capable of simulating at...
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6051830 |
Method for stabilizing a scintillation detector
A method for calibrating a logging tool that is exposed to an external energy spectrum, comprising the steps of: (a) providing a stabilization source that emits a stabilization signal having a...
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6049081 |
Subsurface thermal gradient spectrometry
Spectrometric methodology for non-invasively obtaining optical spectra from heterogeneous material for the identification and quantification of constituent compounds. There is provided a transient...
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6048743 |
Using a submicron level dimension reference
A submicron level dimension reference for use with a scanning electron microscope in a semiconductor device fabrication apparatus. The reference has a first insulating layer with a first pattern...
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6043486 |
Absolute standard reference materials for low-level concentration measurements
A concentration measurement device is calibrated for a target element by performing a concentration measurement on a reference standard sample which includes a number of atoms of a radioactive...
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6028309 |
Methods and circuitry for correcting temperature-induced errors in microbolometer focal plane array
Correction for temperature-induced non-uniformities in the response characteristics of the microbolometers in an infrared focal plane array (FPA) is performed by applying a non-uniform corrective...
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6028314 |
Method for correcting image errors in an x-ray image, and x-ray diagnostic apparatus and solid-state radiation detector operating in accordance with the method
In a method for correcting the image errors arising during an x-ray diagnostic measurement from the memory effect of a radiation-sensitive structure, particularly in the form of a photodiode array,...
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6023061 |
Miniature infrared camera
A miniaturized IR camera mounts within a vehicle such as an airborne reconnaissance airplane. The camera includes a two dimensional uncooled FPA, a compound lens for imaging IR radiation onto the...
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6016684 |
Certification of an atomic-level step-height standard and instrument calibration with such standards
An atomic-level step-height standard with step heights less than about 100 Å is in the form of a silicon wafer die with a generally smooth reflective surface but with a periodic pattern of...
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6011257 |
Bolometer infrared image sensor with an improved compensation circuit for compensating fixed pattern noise
An image sensor includes a plurality of pixels, each of which includes a bolometer infrared image sensor; a feed back circuit connected to the infrared image sensor for controlling at a constant...
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5998798 |
Ion dosage measurement apparatus for an ion beam implanter and method
An ion implanter includes an dosage control apparatus for measuring and controlling ion beam dosage applied to workpieces disposed in an implantation station of the implanter. The dosage control...
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5994701 |
Infrared sensor device with temperature correction function
A shutter 3 which can be momentarily held open and immediately closed, is disposed adjacent to an aperture stop 4 in an optical system, and a temperature sensor 5 is provided for measuring the...
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5994693 |
Gamma camera quality test pattern
A gamma camera quality test pattern having a substrate which is substantially transparent to gamma radiation, the substrate having four quadrants, each quadrant containing a set of spaced L-shaped...
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5990482 |
Method and apparatus for performing correction of transmission self-contamination in a medical imaging system
A method of acquiring transmission self-contamination data for correcting transmission scan data in a nuclear camera system including two transmission radiation sources and two scintillation...
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5988874 |
Black body reference for RTA
A method for calibrating an optical pyrometer to an external reference point. By changing the focus of the optical pyrometer without physically moving the pyrometer, calibration of the optical...
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5986266 |
Method of calibrating multi-crystal single block radiation detectors
A method of calibrating multi-crystal, single block radiation detectors for use in positron emission tomography and other devices with multi-crystal, single block radiation detectors that are used...
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5978053 |
Characterization of collimation and beam alignment
An apparatus and method for characterizing light beam collimation and alignment. A liquid crystal device receiving a light beam from a collimation lens has a lenslet array generated thereon. A...
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5966676 |
Calibration-inability warning method in analyzing apparatus
A calibration-inability warning method in an analyzing apparatus determines in advance when the analyzing apparatus approaches a calibration-inability condition prior to entering calibration...
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5952218 |
Container holder reflectance flag
A bottle retaining mechanism holds a culture bottle in place in a cell in an incubating apparatus which agitates the culture bottle and detects the growth of microorganisms in the culture bottle....
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5932877 |
High performance side stream infrared gas analyzer
An side stream infrared gas analyzer for detecting the concentration of a gaseous component of a substantially gaseous flow stream such as the expired air of a patient under anesthesia. The...
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5933792 |
Method of standardizing a spectrometer
A method for standardizing a spectrometer generating an optical spectrum from a sample, comprising generating at least one optical spectrum from at least one standardization sample each having a...
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5925880 |
Non uniformity compensation for infrared detector arrays
Methods of calculating gain correction values and offset correction values for detector elements of an infrared detector array. The methods can be adapted for one-dimensional scanning arrays or for...
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5920066 |
Real-time adaptive thermal reference control for night vision systems
A system for normalizing an infrared detector has two control loops, each of which includes a thermal source and a command system. Each command system controls the temperature of the associated...
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5912825 |
Gated base line restorer system
A digital gated base line restorer system for an ionizing radiation spectroscopy device includes a gated base line restorer circuit, responsive to pulses passing through the device, for generating...
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5910656 |
Adjustment of the sample support in time-of-flight mass spectrometers
A time-of-flight mass spectrometers, in which the ions are generated by ionization of analyte substances on a sample support, by matrix-assisted laser desorption (MALDI). The time-of-flight mass...
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5905808 |
Method and apparatus for calibrating imaging systems for analyzing agglutination reactions
A method, and a calibration device, for calibrating a system for analyzing aqueous solutions and that includes a pixel array and a variable focus line for focusing onto the pixel array illuminated...
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5905195 |
Method for analyzing total reactive sulfur
The invention relates to a method for determining total reactive sulfur in a crude oil or fraction thereof using a mass spectrometer or gas chromatograph and mass spectrometer. Selecting fragment...
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5886345 |
Accurate mass determination with maldi time-of-flight mass spectrometers using internal reference substances
The invention relates to the exact mass determination of analyte ions in time-of-flight mass spectrometers with ionization of analyte substances on sample supports by matrix-assisted laser...
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5872357 |
Mass spectrometry calibration using homogeneously substituted fluorinated triazatriphosphorines
Calibrant compositions are provided for use in either electrospray or APCI mass spectrometry, and can be used in either positive-ionization or negative-ionization modes. The compositions contain a...
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