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| Number | Title | Issue Date |
| 7910890 | Infrared camera system with diffractive optical array An apparatus and method for imaging incoming radiation. The apparatus includes a radiation shield unit having a cavity. A detector array is positioned at least partially within the cavity and has a planar surface with at least one infrared detector affixed on the de... | 03/22/2011 |
| 7910889 | Wavelength-conversion system with a heated or cooled wavelength-conversion target A wavelength-conversion system includes a wavelength-conversion target that radiates an energy output when an energy input of a different wavelength is incident upon the wavelength-conversion target. An input structure directs the energy input of the input-energy wa... | 03/22/2011 |
| 7755049 | Tunable microcantilever infrared sensor An electromagnetic radiation sensor that exhibits improved performance by virtue of an ability to tune its sensitivity is disclosed. The electromagnetic radiation sensor incorporates thermal actuators that act in opposition to one another, but which have a slight di... | 07/13/2010 |
| 7718967 | Die temperature sensors The invention provides a sensor array having a plurality of sensor elements formed in a first substrate and having a plurality of die temperature sensors located thereabout. Each of the die temperature sensors are configured to provide an output related to the tempe... | 05/18/2010 |
| 7388204 | Apparatus and method for analyzing relative outward flow characterizations of fabricated features An apparatus and method for characterizing gas flow through features fabricated in a hollow part. A pressurized gas is applied to an interior of the part, and this gas pressure flows outward through features fabricated in the part. At the same time, a stabilizing pr... | 06/17/2008 |
| 7354520 | Method of manufacturing optical element An optical element comprising at least a plurality of pixels formed on a substrate and partition walls arranged respectively between adjacent pixels is manufactured by a method comprising steps of forming partition walls of a resin composition on a substrate, perfor... | 04/08/2008 |
| 7335884 | Compensation circuit for compensating non-uniformity according to change of operating temperature of bolometer The present invention relates to a bolometer, and more specifically to a compensation circuit for compensating non-uniformity due to the difference of operating temperature between bolometers which exist in bolometer array using semiconductor material. A compensatio... | 02/26/2008 |
| 7335885 | Ultra low power NDIR gas sensor fire detector A fire detector and method for generating an alarm signal in response to a fire uses an NDIR sensor to generate a detector signal based upon one or more absorption bands selected from the 15.1μ absorption band of CO2, the 6.27μ absorption band of H2O and the 4.67Î... | 02/26/2008 |
| 7329869 | Camera system A camera system exhibiting reduced effects from temperature changes. The camera system includes an IR sensor; an optical arrangement adapted to focus incoming light onto the sensor; a processing arrangement adapted to process signals produced by the sensor; a heatsi... | 02/12/2008 |
| 7312452 | Mobile remote detection device and remote detection method for methane gas accumulations The invention relates to a mobile remote detection device for accumulations of methane, comprising an emitter device having a light source in order to generate light, the wavelength of said light source being tuned with the spectral signature of methane, whereby the... | 12/25/2007 |
| 7276695 | Bolometer infrared detector and afterimage reduction method A bolometer infrared detecting element has a thermal isolation structure in which a temperature detector comprising a bolometer thin film is held floating from a circuit substrate by beams. As infrared rays incident on the temperature detector or reflected by an inf... | 10/02/2007 |
| 7271899 | Millimetre-wave detection device for discriminating between different materials A detection device that can be used for detecting objects behind clothing etc including a dielectric lens and a receive element sensitive to millimetre wave radiation. Prior art systems produce an image of a scene usually using scanning optics. This can be large and... | 09/18/2007 |
| 7253396 | Cooled photodetector Cooled photosensitive cell (80) comprising a table (50), sensors (66) which are fitted on the table, a screen (80) to prevent parasitic radiation on the sensors, and at least one Joule-Thomson cooler (41, 42) to cool the table and ... | 08/07/2007 |
| 7214939 | Ultra low power NDIR carbon dioxide sensor fire detector A fire detector and method for generating an alarm signal in response to a fire uses an NDIR CO2 sensor to generate a detector signal based upon a 15μ absorption band of CO2 and generates an alarm signal when a signal processor receives the de... | 05/08/2007 |
| 7215697 | Matched impedance controlled avalanche driver Controlled avalanche driver circuits and apparatuses for gas lasers. One embodiment typically delivers short, rapid, high voltage ionizing pulses in combination with an electric field whose magnitude is too low to sustain a normal glow discharge. The plasma is typic... | 05/08/2007 |
| 7134322 | Locating one or more leaks in a power generating system while the power generating system is online In one embodiment, a method for locating one or more leaks in a power generating system while the power generating system is online includes adding a detectable gas to a cooling system of a power generating system while the power generating system is online. The det... | 11/14/2006 |
| 7075653 | Method and apparatus for laser-based remote methane leak detection A method and apparatus for remote laser-based detection of gas at levels exceeding natural background levels preferably utilizing wavelength modulated tunable diode laser absorption spectroscopy. In a preferred embodiment, background gas and noise are estimated usin... | 07/11/2006 |
| 7070832 | Sublimating process for cleaning and protecting lithography masks Spraying a surface of a reticle with carbon dioxide snow cleans the surface and removes particles. Further spraying the surface of the reticle with carbon dioxide snow at a temperature below a carbon dioxide sublimation temperature forms a solid carbon dioxide layer... | 07/04/2006 |
| 7063667 | Isotopic gas analyzer An NDIR spectrometer based on the use of wavelength specific lamp sources, whose emission spectrum consists of discrete, narrow lines characteristic of the isotope present in the lamp, and which it is desired to measure with the spectrometer. This allows very high i... | 06/20/2006 |
| 7049597 | Multi-mode optical imager A common aperture, multi-mode optical imager for imaging electromagnetic radiation bands from a field of two or more different wavelengths is described. Fore-optics are provided to gather and direct electromagnetic radiation bands forming an image into an aperture o... | 05/23/2006 |
| 7027924 | Detecting natural gas pipeline failures A method for detecting failures in a natural gas returning radiation from the pipeline; determining that there is a failure in the pipeline when the spectral or thermal signature indicates that there is a plume of escaping natural gas from the pipeline emitted from ... | 04/11/2006 |
| 7022993 | Infrared leak detector Leak detector using infrared for identifying the presence and concentration of a selected gas. For detection, radiation from an infrared emitter penetrates the sample, which is analyzed spectrally, and results in a wave length-specific signal being generated at the ... | 04/04/2006 |
| 7004909 | Diagnostic method for high sensitivity detection of component concentrations in human gas emissions A method for detecting component concentrations in human gas emissions such as breath and gas emitted from skin. A gas sample containing a specified component is collected into a gas cell using a pump and a series of valves to draw the gas sample into the cell and c... | 02/28/2006 |
| 7005643 | Infrared sensor An infrared sensor formed as a membrane on a substrate and detecting infrared rays by an infrared detector on that membrane, wherein even if an adhesive used for mounting the infrared sensor on a mounting surface creeps up to the membrane, it is made possible to pre... | 02/28/2006 |
| 7006857 | Method for determining analyte concentration using periodic temperature modulation and phase detection A method of determining the analyte concentration of a test sample is described. A temperature gradient is introduced in the test sample and infrared radiation detectors measure radiation at selected analyte absorbance peak and reference wavelengths. Reference and a... | 02/28/2006 |
| 7005645 | Apparatus and methods for launching and receiving a broad wavelength range source An apparatus and method for simultaneous detection of N gas species through laser radiation attenuation techniques is disclosed. Each of the N species has a spectral absorption band. N laser sources operate at a wavelength λN in a spectral absorption ban... | 02/28/2006 |
| 6967322 | Method and apparatus for performing rapid isotopic analysis via laser spectroscopy Method and apparatus for providing real-time data indicative of the isotopic composition of formation fluids during drilling. The method includes the steps of: (a) providing a reference fluid having a known isotopic composition in a reference cell; (b) capturing a s... | 11/22/2005 |
| 6944486 | Method and apparatus for determining analyte concentration using phase and magnitude detection of a radiation transfer function A method and apparatus of determining the analyte concentration of a test sample is described. A temperature gradient is introduced into the test sample and infrared radiation detectors measure radiation at selected analyte absorbance peak and reference wavelengths.... | 09/13/2005 |
| 6917038 | Method and apparatus for adjusting signal variation of an electronically controlled infrared transmissive window An analyte detection system non-invasively determines the concentration of an analyte in a sample generating a sample infrared signal indicative of the concentration of the analyte in the sample. The detection system includes a window assembly for receiving the samp... | 07/12/2005 |
| 6900734 | Capillary-discharge based detector for chemical vapor monitoring A handheld/portable detector for chemical vapor monitoring includes a housing and a discharge chamber that is established therein. The plasma discharge has a relatively small volume, e.g., in the micro-liter range. A first electrode and a second electrode are dispos... | 05/31/2005 |
| 6875979 | Thermal imaging calibration systems and methods A calibration assembly employs a thermoelectric cooler to provide a calibration temperature for one calibration flag and a different calibration temperature for a second calibration flag. Either calibration flag is immediately available for insertion into the optica... | 04/05/2005 |
| 6791085 | Infrared radiation detection device A device for generating an image from an IR radiation including a plurality of polarized heat detectors (2) having specific electric resistances distributed over the focal plane of a detection module so as to deliver a signal representing a detected IR radiat... | 09/14/2004 |
| 6675600 | Thermal mismatch compensation technique for integrated circuit assemblies Techniques for minimizing stress induced by temperature changes in an integrated circuit (e.g., focal plane array or processor) or other such assemblies that include materials having mismatched coefficients of thermal expansion/contraction are disclosed. ... | 01/13/2004 |
| 6636753 | Solid-state non-invasive infrared absorption spectrometer for the generation and capture of thermal gradient spectra form living tissue A solid-state spectrometer for the non-invasive generation and capture of thermal gradient spectra from human or animal tissue. The spectrometer includes an infrared transmissive thermal mass window for inducing a transient temperature gradient in the tis... | 10/21/2003 |
| 6633771 | Solid-state non-invasive thermal cycling spectrometer A solid-state device for the non-invasive generation and capture of thermal gradient spectra from sample tissue. The device includes an infrared transmissive layered window assembly, a means for inducing a thermal gradient in sample tissues. Also provided... | 10/14/2003 |
| 6580934 | Method and apparatus for determining analyte concentration using phase and magnitude detection of a radiation transfer function A method and apparatus of determining the analyte concentration of a test sample is described. A temperature gradient is introduced in the test sample and infrared radiation detectors measure radiation at selected analyte absorbance peak and reference wav... | 06/17/2003 |
| 6577885 | Method for determining analyte concentration using periodic temperature modulation and phase detection A method of determining the analyte concentration of a test sample is described. A temperature gradient is introduced in the test sample and infrared radiation detectors measure radiation at selected analyte absorbance peak and reference wavelengths. Refe... | 06/10/2003 |
| 6556850 | Method for determining analyte concentration using periodic temperature modulation and phase detection A method of determining the analyte concentration of a test sample is described. A temperature gradient is introduced in the test sample and infrared radiation detectors measure radiation at selected analyte absorbance peak and reference wavelengths. Refe... | 04/29/2003 |
| 6528316 | Control of solid catalyst alkylation process using raman spectroscopy An advanced method for controlling a solid catalyst alkylation process has been developed. At multiple locations throughout the alkylation process including multiple locations within the reaction zone, on-line Raman spectroscopy is used to measure the con... | 03/04/2003 |
| 6515285 | Method and apparatus for compensating a radiation sensor for ambient temperature variations Methods and apparatus for compensating a radiation sensor for ambient temperature variations. Ambient temperature variations may produce undesirable artifacts in electronic signals output by a radiation sensor. In some cases, such artifacts may detrimenta... | 02/04/2003 |
