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5345081 |
Pit detector and method
A method and apparatus for detecting the presence of an impurity within a substantially spherical object, such as a pit within a piece of stone fruit as it passes through an inspection zone. An...
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5344518 |
Pyroelectric IR-sensor
A pyroelectric IR-sensor in which a pyroelectric light receiving element is mounted on a MID substrate or a ceramic substrate having a thermal conductivity less than 0.02 cal/cm.sec.°C. Both ends...
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5340395 |
Material for efficient masking in the infrared region
The technical field of the invention is concerned with smoke-generating devices and with powdered materials scattered by dispersion means in order to produce a camouflaging cloud which is effective...
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5339255 |
Method of controlling synthesis reaction
A method for controlling synthesis reaction of a synthetic high molecular resin, the method measuring continuously an infrared spectral absorption of a reaction intermediate product of...
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5331162 |
Sensitive, low-noise superconducting infrared photodetector
A superconducting infrared photodetector employing SQUID (Superconducting Quantum Interference Device) measurement of fluxon flow in thin superconducting granular films to provide sensitive,...
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5326172 |
Multiwavelength pyrometer for gray and non-gray surfaces in the presence of interfering radiation
A method and apparatus for detecting the temperature of gray and non-gray bodies in the presence of interfering radiation. A gray body has a constant emissivity less than 1 and a non-gray body has...
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5326171 |
Pyrometer apparatus and method
A method for sensing the temperature of a remote object within a chamber that is heated from outside the chamber, includes sensing radiation from the object within the chamber through a window in...
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5324979 |
Method and means for generating synthetic spectra allowing quantitative measurement in near infrared measuring instruments
A method and means for generating synthetic spectra allowing quantitative measurement utilizes dual chip alternatively energized IREDs with optical bandpass filter(s) passing two optical bands...
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5324937 |
Target for calibrating and testing infrared devices
An improved target for testing and calibrating a detection device. The target (10) includes a metal substrate (12) with a first layer (14) of high emissivity material and a second layer (16) of low...
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5323025 |
Pyroelectric IR-sensor having a low thermal conductive ceramic substrate
A pyroelectric IR-sensor in which a pyroelectric light receiving element is mounted on a MID substrate or a ceramic substrate of which thermal conductivity is less than 0.02 cal/cm.sec.° C. in a...
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5323005 |
Method and apparatus for monitoring energy radiant from a dispensed heated material
The monitoring of energy radiating from a heated material, such as a hot melt adhesive, dispensed onto a substrate may be accomplished by an infrared sensor. The wand of the infrared sensor is...
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5316385 |
Correction-free pyrometry in radiant wall furnaces
A method and apparatus to produce correction-free pyrometry is described. The method determines the optimum position for a pyrometer that "views" a specular, spherical or near-spherical target in a...
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5315115 |
Optical apparatus and method for sensing particulates
The present invention relates to an apparatus and method of determining particulate integrated properties consisting of integrated volume concentration, integrated surface area concentration and...
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5315434 |
Infrared-transmissive lens and human body detecting sensor using the same
An infrared-transmissive lens formed by using glass including germanium and selenium or germanium and sulfur as main components and a human body detecting device including the lens and a...
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5308984 |
Method of operating a dual mode tracking system
A method of processing IR signals from a repetitively scanned array of photovoltaic cells is shown to consist of the steps of: (a) subtracting IR signals received on successive scans to produce...
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5304805 |
Optical-heterodyne receiver for environmental monitoring
A GaAs/AlGaAs multiple-quantum-well (MQW) is used as an optical mixer for environmental monitoring of atmospheric emission or absorption signals in the infrared (IR) region. The atmospheric signals...
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5304804 |
Turns count anomaly detector
A turns count anomaly detector for detecting any irregularities in the pat count of a fiber optic able from fiber optic dispensers. The detector receives an input from an infrared source and...
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5296705 |
Imaging system with integrated measuring of the wear of its optical elements working in transmission mode and optronic imaging equipment comprising an imaging system such as this
An imaging system is provided with integrated measurement of wear in at least one of the system's optical elements working in the transmission mode, in a given spectral band. The system includes a...
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5296641 |
Communicating between the infrared and midi domains
A system for receiving and subsequently either transforming or transceiving signals between the MIDI domain and the IR domain. MIDI devices are cable connected to a transceiver which translates...
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5285396 |
Device for evaluating race horse performance based on temperature
A device for evaluating a plurality of race horses' readiness for a race by quantitatively assessing the horses' temperatures without contacting the horses, the evaluation being made prior to the...
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5280335 |
Fiber-optical testing system having a detection circuit
A system for testing a fiber-optic component with infrared radiation is provided. The testing system has a source of infrared radiation, an optic coupler, a detecting circuit, and an analog tape...
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5270555 |
Pyroelectric IR-sensor with a molded inter connection device substrate having a low thermal conductivity coefficient
A pyroelectric IR-sensor in which a pyroelectric light receiving element is mounted on a MID substrate or a ceramic substrate having a thermal conductivity less than 0.02 cal/cmsec°C. Both...
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5260574 |
Infrared densitometer
A high resolution infrared densitometer system is described which comprises an intense thermal light source, an optical system for projecting first and second images of the light source along...
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5258619 |
Pulsed bias radiation detector
Methods and apparatus are disclosed for broadening the bandwidth of a radiation detector and diminishing heat generated noise generated within the detector in order to enhance detectivity. The...
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5255286 |
Multi-point pyrometry with real-time surface emissivity compensation
A multi-point non-invasive, real-time pyrometry-based temperature sensor (200) for simultaneously sensing semiconductor wafer (22) temperature and compensating for wafer emissivity effects. The...
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5247176 |
Infrared laser polarimeter
An infrared laser polarimeter system for measuring the Mueller matrix of a sample is described which comprises, a infrared laser source for projecting a beam of preselected wavelength (preferably...
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5245408 |
Electro-optic coherent light detector
An apparatus is described which detects the presence or absence of coherent light and provides an estimate of the coherent light's wavelength. The apparatus employs a common-path "polarization...
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5245196 |
Infrared flame sensor responsive to infrared radiation
An infrared flame sensor apparatus useful for detecting a flame in the combustion chamber of a water heater or boiler is disclosed. An infrared phototransistor with narrow light frequency response...
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5243192 |
Infrared sensor
An infrared sensor comprises a substrate, a sensing unit formed on the substrate, and a signal processing circuit formed on the substrate. At least the signal processing circuit is covered with a...
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5231289 |
Thermal photodetector and method of manufacturing the same
A thermal photodetector includes a thermal photodetector element and a support stand for supporting the thermal photodetector element. The support stand is made of a material of which heat...
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5226732 |
Emissivity independent temperature measurement systems
An improved contactless temperature measurement system is provided which includes a workpiece, a chamber containing the workpiece with the walls thereof being substantially transmissive to...
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5227631 |
Infrared detector of the type used in infrared spectrometers
An infrared detector assembly for infrared spectrometers includes a circuit board on which electronic components and an infrared detector and cooler unit are mounted. The detector unit includes a...
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5218345 |
Apparatus for wide-area fire detection
In fire detector apparatus for monitoring an extended area from an elevated location, and especially for detecting forest fires, a scanning assembly (1) has azimuthal freedom of movement. A row of...
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5213830 |
Method of detecting worms in meat
Method for quality control of meat products, especially fish flesh, with regard to the presence of worms. The product to be subjected to quality control, or a sample thereof, is exposed to...
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5209567 |
Apparatus for measuring the radiation capacity of lasers
Apparatus for measuring the radiation power of lasers, particularly infrared lasers, with a thermal detector, which supplies a power-caused measurement signal. In order to be able to measure rapid...
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5210417 |
Modulated high sensitivity infrared polarimeter
A modulated Faraday rotation signal is produced by passing a linearly polarized laser beam through a semiconductor wafer sample in a modulated magnetic field that is induced in an electromagnet by...
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5208528 |
Method for inspecting a populated printed circuit board, particularly for inspecting solder joints on the board and a system for working this method
The invention relates to a method for inspecting a populated printed circuit board, particularly for inspecting the solder joints on the board, and advantageously usable for boards populated with...
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5208643 |
Method of and apparatus for non-contact temperature measurement
The temperature and radiant energy emissivity of a semiconductor substrate or wafer undergoing processing are monitored by combining indications derived from an interferometer and the intensity of...
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5200623 |
Dual integration circuit
A dual integration circuit is disclosed for extending the dynamic range of on focal plane signal processor used in a space based infrared detection system. The circuit comprises an input port in...
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5194734 |
Apparatus and method for indicating a contour of a surface relative to a vehicle
An apparatus and method for indicating a contour of a surface relative to a vehicle, in which a first electromagnetic radiation source projects a first beam to create a first reflection pattern on...
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5188459 |
Protective shield accessory for measurement instrument
A measuring instrument for receiving radiation through an opening in a housing and having a protective shield member across the opening. The protective shield member is sealed against the housing...
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5189305 |
Timing apparatus particularly for racing vehicles
A timing apparatus for providing timing information to a moving person (11) moving past a datum line (13). A radiation source (15) located at the datum line (13) emits modulated radiation in a...
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5178464 |
Balance infrared thermometer and method for measuring temperature
A sensor includes two thermal energy detectors thermally insulated from one another. The first detector is warmed or cooled by radiation between it and the object being measured. The second...
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5166525 |
Through the wafer optical transmission sensor
A device for the optical measurement of light transmitted through silicon wafers and other media during the manufacture of electronic components and particularly during processing within a spray...
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5165796 |
Bichannel radiation detection apparatus
Apparatus for optically determining the temperature of an object in an environment at elevated temperature provides enhanced measurement accuracy by sensing radiation from the object in two or more...
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5160842 |
Infrared fire-perimeter mapping
A fire-perimeter, temperature-differentiating mapping system for creating a temperature-level-differentiated, visually readable outline of a ground fire, which outline is suitable for in-scale...
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5145257 |
Infrared fiber-optical temperature sensor
A temperature sensor comprising a probe, infrared fibers, super-cooled detors and their associated electronics, and a computer for determining the temperature from the output of the electronics....
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5133605 |
Monitoring system employing infrared image
An infrared image monitoring system according to the present invention includes an infrared camera and a visible light camera, both viewing the same scene to be monitored. The visible light camera...
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5128548 |
Monitoring and recording device for large game animals and other objects
A microprocessor based device for monitoring a location and recording the time and date of each event involving the presence of an object such as a deer at the monitored location. A transmitter of...
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5126568 |
Magnetometer input circuit for infrared detectors
A method and an input circuit are disclosed for interfacing infrared detector elements to signal processing circuitry. The input circuit comprises a current loop for generating a magnetic field and...
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