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7354770 |
Sensing device and method using photo-induced charge movements
A device and method which comprises a sensing surface on a membrane, solid surface or electrode, where the sensing surface contains a dye or chromophore chosen in relation to a particular target...
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7351975 |
Sensor system for identifying and tracking movements of multiple sources
A system identifies a human being from the movement of the human being. The system includes a dual element pyroeleetric detector, a Fresnel lens array, and a processor. The dual element...
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7326936 |
Photodetector and photodetecting device
An infrared detector includes a silicon substrate, an infrared reflecting film, a diaphragm including a bolometer thin film, disposed above the silicon substrate across a gap, and a signal line...
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7312450 |
Infrared detecting device
An infrared detecting device for reducing current consumption while maintaining performance is disclosed. The device includes a drive power supply circuit which comprises a current generating...
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7180063 |
Thermal infrared detector having a small thermal time constant and method of producing the same
In an area of a diaphragm 5 as an infrared photosensitive portion of a thermal infrared detector, a fourth dielectric protective film 8 c is etched and reduced in thickness to form a fifth...
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7164131 |
High fidelity electrically calibrated pyroelectric radiometer
Using biased, electrical power feedback to an electrical heater, the output signal from a pyroelectric detector is made to follow the waveform of incident electromagnetic radiation. The feedback...
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7161152 |
Method and apparatus for reducing false alarms due to white light in a motion detection system
A motion detection system includes a first sensor sensitive to infrared light in at least one detection zone and generating a first output signal representative of the detected level of infrared...
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7157709 |
Infrared sensor package
An infrared sensor package has a dielectric support which is molded from a plastic material to have a sensor mount for securing a pyroelectric element as well as an IC mount for securing an IC chip...
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7129487 |
Infrared detecting circuit and an infrared detector
An infrared detecting circuit is provided with a current-to-voltage converting circuit including a capacitor connected with an inverting input terminal and an output terminal of an operational...
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7105819 |
Infrared ray sensor using silicon oxide film as infrared ray absorption layer and method of fabricating the same
The present invention relates to a pyroelectric infrared ray sensor fabricated by using MEMS processes, wherein an infrared ray absorption layer disposed on the most top portion of the infrared ray...
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7064330 |
Infrared defect detection via broad-band acoustics
A method of detecting defects in structures, comprising the steps of inducing mechanical energy in a structure via the emission of a broad-band acoustic signal, and capturing over a time interval a...
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7026618 |
Highly-sensitive, pyroelectric infrared sensing method and apparatus
A highly-sensitive, pyroelectric infrared sensing method and apparatus that can detect infrared temperature with high sensitivity throughout the entire electromagnetic wave range including...
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7022991 |
Active regulator for maximizing pyroelectric sensitivity
A pyroelectric sensor having an active regulation for maximizing pyroelectric sensor sensitivity is disclosed. The pyroelectric sensor comprises a ferroelectric transducer, and a regulator. The...
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7019295 |
Digitally-controlled pyroelectric signal sampling circuit
A digitally-controlled pyroelectric signal sampling circuit is proposed, which is designed to process the alternating current (AC) signal from a pyroelectric device, such as a pyroelectric infrared...
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6888141 |
Radiation sensor with photo-thermal gain
A thermal sensor for low level radiation with built-in photo-thermal gain utilizing a thin film of pyro-optical material to modulate the reflectivity and/or transmission of a photonic carrier beam....
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6881957 |
Passive infrared device for detection of boundary crossings
A passive low power device for detection of boundary crossings includes a dual element pyro-electric infrared (PIR) sensor. The sensor is designed with a lens that provides a very narrow field of...
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6863438 |
Microstructured thermosensor
A micropatterned thermosensor, e.g., an infrared sensor, includes a supporting body and at least one thermocouple arranged thereon. The thermocouple also has a first material and a second material,...
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6818892 |
System and method for infra-red detection
A thermal detector comprises a rigid, frame-shaped support structure which supports a flexible, thin and substantially planar membrane of pyroelectric material. The major surfaces of the...
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6815681 |
Electron beam lithography apparatus using a patterned emitter
An electron beam lithography apparatus, which uses a patterned emitter, includes a pyroelectric plate emitter that emits electrons using a patterned metal thin layer formed on the pyroelectric...
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6800854 |
Passive infrared detector
A passive infrared detector has a first sensor ( 1 ) for generating an infrared signal, representative of the difference in temperature between a heat source and the background environment of the...
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6765210 |
Infrared sensor with hysteresis and driving method thereof
A bolometer-type infrared sensor using a resistor with a hysteresis in its thermal characteristic of resistance increases the sensitivity. A first temperature controller raises or drops the...
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6744049 |
Detection of obstacles in surveillance systems using pyroelectric arrays
Arrays of pyroelectric elements are used in surveillance systems by focusing the radiation from a scene on to them and examining the output from the array. If an object is moved into the scene and...
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6693279 |
Dynamic offset correction in detector arrays
A signal processing technique applied to the readout of two-dimensional detector arrays provides a dynamic correction mechanism for the varying offsets of the different elements of the array. The...
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6677589 |
Object detecting device with a pyroelectric sensor
An object detecting device utilizes a pyroelectric sensor providing a sensing current, a voltage amplifier providing an amplified voltage proportional to the sensing current, and a level monitor...
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6661010 |
Microbolometer operating system
A method for reading a microbolometer array that is arranged into a number of rows and columns. Preferably, the method includes deselecting all columns in the microbolometer array for a period of...
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6630671 |
Domain engineered ferroelectric optical radiation detector having multiple domain regions for acoustic dampening
A pyroelectric detector with significantly reduced microphonic noise sensitivity that includes a pyroelectric detector element constructed from a z-cut LiNbO 3 or LiTaO 3 electret. Selective...
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6586738 |
Electromagnetic radiation detectors having a micromachined electrostatic chopper device
The present invention provides for an improved electromagnetic radiation detector having a micromachined electrostatic chopping device. The MEMS flexible film chopping device provides reliability,...
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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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6580077 |
Infrared sensor
An infrared sensor comprises: a stem; a pyroelectric element arranged on one side of the stem; a conversion circuit for changing electric charge generated in the pyroelectric element into a signal;...
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6563118 |
Pyroelectric device on a monocrystalline semiconductor substrate and process for fabricating same
High quality epitaxial layers of monocrystalline materials can be grown overlying large silicon wafers by first growing an accommodating buffer layer ( 104 ) on a silicon wafer ( 102 ). The...
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6539137 |
Thermo-electric signal coupler
A signal coupler is comprised of a transmitting section and a receiving section. The receiving section includes a polymer pyroelectric film element having a greater than 1% by volume of a high...
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6528792 |
Gas detection apparatus using a combined infrared source and high temperature bolometer
An apparatus for detecting a gas having distinct infrared radiation absorption characteristics. The apparatus includes a spectral source/bolometer for conducting an electrical current and for...
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6495828 |
Ferroelectric/pyroelectric infrared detector with a colossal magneto-resistive electrode material and rock salt structure as a removable substrate
A ferroelectric/pyroelectric infrared detector includes a lattice matched substrate material and a colossal magneto-resistive electrode material. In a second embodiment, the...
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6469303 |
Non-dispersive infrared gas sensor
An NDIR sensor includes a cylindrical metallic tube, a printed circuit board platform that fits into one end of the tube, a diffusion filter that fits into the opposite end of the tube, and an...
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6465784 |
Infrared solid-state imaging sensing device
Infrared solid-state imaging elements include an infrared absorbing section formed as to correspond to each pixel aligned in a two-dimensional pattern for absorbing incident infrared radiation and...
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6452136 |
Monitoring and control system and method for sensing of a vessel and other properties of a cooktop
An apparatus that determines properties of a cooktop is provided. The cooktop includes a cooktop surface and a vessel that is selectively placed on the cooktop surface. The apparatus comprises a...
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6448557 |
Thermal infrared detector provided with shield for high fill factor
An infrared photosensitive area is constituted by an infrared ray absorbing part that is heated by infrared rays, a thermal detector that detects the temperature change of the infrared ray...
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6441374 |
Thermal type infrared ray detector with thermal separation structure for high sensitivity
A thermal type infrared ray detector with a thermal separation structure includes a plurality of picture elements. Each of the plurality of picture elements includes a circuit formed in a substrate...
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6437331 |
Bolometer type infrared sensor with material having hysterisis
An infrared ray sensor includes two electrode lines, a heat sensing section and a control unit. The heat sensing section is connected between the two electrode lines, and includes a film formed of...
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6429428 |
Radiation detectors
A thermal imaging device comprises an array of microbridges( 10 ) disposed on a silicon readout circuit substrate ( 12 ). Each microbridge ( 10 ) is supported above the substrate ( 12 ) by...
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6403959 |
Infrared detector element, and infrared sensor unit and infrared detecting device using it
The present invention relates to an infrared detector element to detect infrared rays by means of a pyroelectric material, and an infrared sensor unit and an infrared detecting device using the...
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6399947 |
Infrared ray receiving element and infrared ray sensor using the same
An infrared ray receiving element includes a substrate made of a pyroelectric material and having at least one cantilever portion surrounded by a slit, in which at least a part of the cantilever...
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6392234 |
Infrared optical gas sensor
An infrared optical gas sensor is improved with respect to the quality of the measured signal. The infrared radiation detectors ( 4, 6 ) used as the reference radiation and measuring radiation...
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6388256 |
Thermal detector array
A thermal detector device comprising an array of thermal detector elements, an array of microbridge structures comprising the array of thermal detector elements, readout silicon integrated...
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6340816 |
Pyroelectric detector with feedback amplifier for enhanced low frequency response
A pyroelectric detector circuit comprises a pyroelectric sensor element connected to a load resistor and to an input of a buffer amplifier having a feedback path for multiplying the resistance of...
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6339221 |
Ferroelectric thermometry and pyrometry by active operation
A ferroelectric/pyroelectric sensor that employs a technique for determining a charge output of a pyroelectric element of the sensor by measuring the hysteresis loop output of the element several...
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6329656 |
Ferroelectric ceramics
A ferroelectric ceramic for use as a pyroelectric is provided. In a disclosed embodiment, the ceramic has the composition: Pb 1 + δ {[(Mg 1 /3 Nb 2 /3) y (Zr 1 -x Ti x ) 1 -y ] 1 -z A z }O 3...
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6326621 |
Infrared radiation detector and method of manufacturing the same
The invention provides a compact and high performance infrared radiation detector. The infrared radiation detector contains: a substrate; and at least two infrared radiation detector units selected...
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6313462 |
Infrared-rays detector
In an infrared-rays detector, a pyroelectric element detects existence or movement of a human body, and the output signal of the pyroelectric element is converted to a voltage signal. Then, the...
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6294784 |
Pyroelectric sensor sensitivity enhanced by active hysteresis excitation
A ferroelectric/pyroelectric sensor that employs a technique for determining a charge output of a pyroelectric element of the sensor by measuring the hysteresis loop output of the element several...
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