Matches 251 - 300 out of 360 < 1 2 3 4 5 6 7 8 >
Match Document Document Title
4769545 Motion detector  
A miniature passive infrared motion detector consists of an optical system, a pyroelectric polymer film and an electronic circuit. The optical system is made of a curved Fresnel lens and an...
4755707 Input device  
An input device such as a keyboard or a tablet for input of pattern employing a piezoelectric material/polymer 1-3 composite of the structure in which a number of rods of piezoelectric material are...
4751356 Temperature detecting device, microwave cooking apparatus using the same, and data correcting method thereof  
A temperature detecting device detects infrared rays from an object to be measured and determines the temperature of the object based on the detection result. To avoid the influence of...
4751388 Sensor element in a retaining frame for a pyrodetector and method for the manufacture thereof  
A sensor element arrangement for a pyrodetector has a concave mirror with a sensor element arranged at a focus of the concave mirror and further sensor elements arranged laterally therefrom....
4745284 Infrared ray detector  
A pyroelectric infrared ray detector of the so-called dual structure for detecting an intruder or the like through differential output of two pyroelectric infrared ray detecting elements connected...
4740700 Thermally insulative and electrically conductive interconnect and process for making same  
A pyroelectric focal plane array useful for thermal imaging applications comprises a detector (10), comprises a reticulated and aluminized pyroelectric chip (12) interfaced with a signal processor...
4714832 Photometer  
Photometer with at least one measuring beam traversing a space that contains measuring gas is improved by a solid state detector made of a foil which is specifically made of...
4701619 Pyroelectric detectors  
A pyroelectric detector element having defined on a major surface two spaced areas exhibiting radiation absorbing and/or reflecting properties. A mirror-like area comprising a dielectric material...
4697081 Infra-red radiation detector devices  
An infrared radiation detector device, for example, for an intruder alarm, comprises two dual detectors. Each dual detector constitutes a separate detection channel and has two pyroelectric...
4695149 Light measuring device  
A light measuring device for a camera, having a pyroelectric sensor for heat ray detection having substantially the same optical axis as that of a light measuring element for spot light...
4692619 Pyroelectric type detecting device  
A pyroelectric type detecting device including a converging mirror, a pyroelectric type sensor element for detecting light converged by the converging mirror, an amplifier for amplifying an output...
4691104 One-dimensional pyroelectric sensor array  
A one-dimensional pyroelectric sensor array comprises (1) a base plate made of a pyroelectric material; a plurality of strip elements made of pyroelectric material having a heat-sensitive region at...
4682030 Infrared radiation detector with integral fresnel lens window  
An infrared radiation detector comprises a pyroelectric detector element in a hermetically sealed housing. The housing comprises a base and cover with an aperture. A Fresnel lens, for example made...
4663529 Thermal imaging device and a method of manufacturing a thermal imaging device  
A thermal imaging device comprising a ferroelectric or pyroelectric slab bearing an infrared-permeable common electrode on one main surface and a signal electrode structure on the opposite main...
4631406 Infrared ray detector  
An infrared ray detector comprises an infrared ray detecting member (25), a pair of opposing members (32, 33) each having a plurality of infrared ray transmitting portions (34, 35) and infrared ray...
4626687 Infrared sensor  
In an infrared sensor having a pyroelectric element and a FET in a high frequency electric field and infrared radiation shielding case, a capacitor is located in the case and connected to at least...
4616136 Infra-red radiation detector  
A pyroelectric infrared radiation detector which is particularly suited to automated assembly comprises a pyroelectric detector element mounted in a housing having a window transparent to infrared...
4598163 Pyroelectric detector  
A pyroelectric detector comprising a functional portion in which opposed electrodes 111 to 118 are formed on both surfaces of a pyroelectric type substrate 101 and four light receiving electrode...
4595832 Thermal sensor with an improved coating  
The disclosure is directed to an apparatus for detecting radiation having wavelengths from about 0.4 μm to about 5.6 μm. An optical coating is applied to a thermal sensor that is normally...
4593456 Pyroelectric thermal detector array  
A thermal detector array includes a substrate layer with a pyroelectric layer attached to the substrate, a plurality of detector regions being defined in the pyroelectric layer by openings through...
4593197 Gas analyzer  
A gas analyzer has a generally cylindrical cell having cell windows closing the opposite ends thereof and which are infrared passing materials and pipes for passing a sample gas through the cell, a...
4575633 Pyroelectric infrared radiation detector  
An infrared radiation detector for an intruder alarm has a pyroelectric element comprising a pyroelectric body sandwiched between two electrodes. The element is supported above a header by two...
4556796 Infrared radiation detector  
An infrared radiation detector comprises two differentially connected pyroelectric detector elements in parallel-opposition. The detector elements are formed in a single body of pyroelectric...
4542294 Infrared detector and method of producing the same  
A method of producing a pyroelectric type infrared detector comprising the steps of arranging two pyroelectric elements 25A and 35A polarized in opposite directions on support blocks 21A, and...
4516027 Infrared detector  
Contactlessly operating detectors which are accommodated in a casing provided with a window and which exploit the pyroelectric effect (FIG. 1) are being increasingly used for radiation and...
4501967 Broad band pyroelectric infrared detector  
An infrared thermal detector includes an infrared thermal sensing element, a load resistor, and a voltage supply means. The infrared thermal sensing element is a pyroelectric material whose...
4493563 Pyroelectric detector  
A pyroelectric detector with an optimized quality factor, having a dielectric material inserted between two parallel electrodes, the material being a monodomain ferroelectric monocrystal. The faces...
4492857 Pyroelectric detector and vidicon  
The invention relates to an ammonium phosphotellurate pyroelectric vidicon and detector. The pyroelectric detector comprises a dielectric material inserted between two parallel electrodes, said...
4489238 Infrared radiation detector  
The detector has a pyroelectric element sandwiched between two electrodes which are transparent to the wavelength of radiation to be detected. The pyroelectric element is maintained in spaced...
4475040 Pyroelectric infrared detector  
A pyroelectric infrared detector of the dual element type has its two elements connected in parallel but with opposite polarities. The dual elements are arranged such that the detector element...
4469943 Pyroelectric detector  
A pyroelectric detector comprises an element (1) of pyroelectric material that responds to variations with time in the intensity of radiation incident on an operative surface region of the detector...
4467202 Photoelectric detector  
The photoelectric detector contains a photosensor or light-sensing element of a pyroelectric polymer film interposed by two disturbance-preventive chambers such that the two disturbance-preventive...
4459484 Radiation detector for a flame alarm  
A radiation detector contains a sensor element constituted by a pyroelectrical element, for instance formed of lithium-tantalate, lead-zirconate-titanate, lead-zirconate-iron-niobate or...
4445034 Compound infrared detector  
A compound infrared detector, having a thermopile detector which is constructed on one face of a pyroelectric insulating thin film and a pyroelectric detector which is constructed by installing...
4441023 High output differential pyroelectric sensor  
A dual pyroelectric crystal sensor suitable for infrared intruder alarms and the like having two separate closely spaced identical pyroelectric crystal detectors connected in parallel opposition....
4437002 Pyroelectric infrared sensor  
A pyroelectric infrared sensor for use in intrusion alarm systems, including a pyroelectric ceramic element provided with two pairs of electrodes, of which the front electrodes are so configured as...
4437003 Differential pyroelectric sensor with static discharge  
A dual pyroelectric crystal sensor, connected electrically in series opposition to provide ambient temperature compensation, drives a single ended amplifier. The load resistor for the sensor is a...
4425502 Pyroelectric detector  
In order to reduce microphony due to the piezoelectric nature of a pyroelectric element (9) in a pyroelectric detector, the detector comprises one or more flexible films resiliently supporting the...
4425504 Bolometric detector  
A bolometric detector comprising an optical immersion lens and a pyroelectric detector element mounted so as to be spaced from the lens. The detector may be mounted spaced from the lens by an air...
4418335 Infrared intrusion detector with pyroelectric sensor and charge amplifier  
An infrared intrusion detector, utilizing as a sensor element a pyroelectric detector element, accomplishes evaluation of the output signal of the detector element with a charge amplifier, for...
4404468 Pyrodetector  
A pyrodetector is disclosed which has a sharply limited directional range of detection sensitivity for the detection of a body entering into its directional range at a distance from the detector,...
4384207 Differential pyroelectric detector  
A pyroelectric detector comprising a body of pyroelectric material having a front surface for receiving radiation, a rear surface, a relatively thin coating of radiation absorbing and transmitting...
4383174 Pyroelectric detector and method for manufacturing the same  
A device for detecting infrared rays using the pyroelectric effect, namely a pyroelectric detector, and methods for manufacturing the pyroelectric detector, are disclosed. The pyroelectric detector...
4379970 Pyroelectric detector arrays  
A pyroelectric detector array and the method for using it. A series of holes 13 formed through a silicon dioxide layer 12 on the surface of a silicon substrate 11 forms the mounting fixture for the...
4379971 Pyroelectric sensor  
An improved, selective, radiation sensing device is provided which includes a thin strip of pyroelectric material. One side of the material is coated with a continuous layer of metallic material to...
4367408 Pyroelectric type infrared radiation detecting device  
A pyroelectric pellet made of a Z cut plane of lithium tantalate, for example, is fixed onto an electrically conductive supporting base made of copper, for example, by means of an adhesive agent...
4354109 Mounting for pyroelectric detecctor arrays  
A mounting means for apparatus useful for processing infrared signals including a pyroelectric detector array with a plurality of detector elements, a plurality of electrically conductive epoxy...
4348611 Ferroelectric or pyroelectric sensor utilizing a sodium nitrite layer  
A pyroelectric or ferroelectric sensing element consists of a substrate with a thin layer of sodium nitrite. Electrodes may be applied to both sides of the sodium nitrite layer, or, alternatively,...
4336452 Radiation detector circuits which inhibit depoling of the detector  
In a pyroelectric detector circuit arrangement in which a pair of capacitive detector elements (C 1 and C 2 ) formed of polarized pyroelectric material are electrically connected in series with...
4317063 Pyroelectric detectors  
A reticulated pyroelectric target, for the detection of infra red radiation, comprising a plurality of closely packed islands of pyroelectric material separated by a plurality of relatively narrow...
Matches 251 - 300 out of 360 < 1 2 3 4 5 6 7 8 >