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4346427 Control device responsive to infrared radiation  
A device responsive to infrared radiation can control a current line to such items as interior lighting or room air conditioners in order to activate these items in response to the presence or...
4342032 Device for the detection of and defense against masked helicopters  
A device for the detection of and defense against low-flying helicopters which are masked or hidden by ground cover has a heat-sensitive sensor and an optical filter to detect heat radiation which...
4339748 Multiple range passive infrared detection system  
A passive infrared detection system which exhibits a consistent optical aperture and sensitivity over different operating ranges. The system includes a mirror assembly having a plurality of...
4325145 Thermal detection system  
A thermal detection and alarm system for indicating the irradiation of a surface by a heat source such as a laser beam has been invented. The detector element may form an integral portion of the...
4321594 Passive infrared detector  
A passive infrared intrusion detection system is provided in which one or more Fresnel lenses are employed to focus received infrared energy onto a detector element which provides an electrical...
4317998 Infra-red line-scanning target detectors  
Scanning radiation source detecting apparatus, comprising means for deriving a general response signal in response to radiation from any part of a field of view, and a central response signal in...
4318089 Infrared detector system  
An improved infrared detector system includes a pair of thin film thermopile sensing elements that receives reflected energy from aspheric reflectors that are designed to provide optimum energy...
4315150 Targeted infrared thermometer  
An apparatus for use in determining the temperature of or at a specific area by measuring the infrared radiation from that area through the use of a reflector structure to direct the radiation...
4310761 Infrared detector device for the exploration of thermal images by systems operating a scanning of the parallel series type with the relative manufacturing process  
Disclosed is a parallel/series infrared scanner for detecting thermal images. "N" infrared detecting elements are arranged in series to scan a single portion of an I.R. image. Adjacent portions of...
4309610 Method of determining the location, orientation and pattern of reinforcing members in reinforced concrete  
A method of determining location and orientation of metallic reinforcing members in reinforced concrete whereby the members are heated inductively, e.g. by a spiral coil lying in a plane parallel...
4302674 Infrared radiation detecting apparatus and method of manufacturing it  
An infrared radiation sensing device such as a pyroelectric effect device is mounted on one surface of an insulating substrate of alumina ceramic or the like. External connection leads are...
4302673 Technique for optical non-uniformity correction of an imaging system  
A technique for optical non-uniformity correction of a focal plane imaging ystem wherein incoming objective scene light rays impinging on each detector in a focal plane array is corrected on a...
4298280 Infrared radar system  
An infrared radar system. The system includes an infrared laser and associated controller which are adapted to provide a succession of transmit pulses having a relatively high intensity spike...
4290043 Method of and system for detecting marine obstacles  
A marine obstacle avoidance system for and method of alerting a helmsman of a marine vehicle to the danger of maritime collision with floating and/or submerged objects. The system includes an...
4284888 Pyroelectric detectors  
An intruder detector consists of an element of pyroelectric material having three defined regions; two being active to infra-red radiation and one being relatively inactive to infra-red radiation....
4271358 Selective infrared detector  
Infrared detectors, such as thermistors, thermocouples, thermopiles, pyroelectric detectors, and the like, are rendered insensitive to short wave radiation, such as the visible or near infrared,...
4271359 Optical arrangement for a passive infrared motion detector  
An optical arrangement for use with an infrared detector characterized by a concave mirror surrounding the infrared detector, a body having a plane reflecting surface extending perpendicular to...
4266130 Method and apparatus for detecting clear air turbulences  
An improved clear air turbulence (CAT) detector sensing infrared radiation in the 27-33 micrometer range of the water vapor rotational wavelength band. The improved clear air turbulence detector...
4263585 Intrusion detection system with a segmented radiation sensing mirror  
An intrusion detection system has an optical device for focusing radiation energy onto radiation sensing elements. Connected to the sensing elements is a circuit which produces intrusion signals...
4262199 Infra-red target detection and recognition system  
An I. R. target detection arrangement having a high-inertia line scan and a low inertia frame scan. The line scan is performed by scanning a line of I. R. detectors broadside over a section of the...
4258255 Infrared intrusion detection system  
A passive infrared intrusion detection system including a mirror assembly having an array of plane mirrors disposed at respective angular positions to provide a wide field of view. A parabolic...
4242669 Passive infrared intruder detection system  
Radiation detection apparatus is disclosed including a first detector (6) for detecting radiation at a wavelength which is preferably in the infra-red region, and a device for sensing the presence...
4238675 Optics for infrared intrusion detector  
An infrared intrusion detector has an optical system for gathering infrared radiation from discrete sensitive regions and focusing such received radiation onto an infrared radiation sensor. The...
4227077 Optical tracking system utilizing spaced-apart detector elements  
An optical tracking system in which an image of an object to be tracked is nutated about the image plane. Individual detector elements are arranged in a hexagonal array within the image plane such...
4225786 Infrared detection system  
An infrared radiation intruder detection system is disclosed which employs a unique pyroelectric detector array. The array comprises a pyroelectric plastic film having electrodes arranged on...
4221966 Infrared surveillance system  
An optical system for infrared detection in the 3 to 14 micrometer region comprising: a viewing aspheric corrector, a spherical mirror having a focal length, said spherical mirror being positioned...
4220859 Infra red radiation detector  
A detector for detecting electromagnetic radiation within the infra red region of the electromagnetic spectrum comprising a pyro-electric transducer positioned so as to intercept electromagnetic...
4213394 Spin processing active optical fuze  
An optical target detecting device and system are disclosed wherein a single lens system projects a beam of infra red radiation and a single lens system picks up target reflections of this single...
4210807 Heat imaging apparatus  
A heat imaging apparatus is used to detect and display heat radiation from target. For this purpose the apparatus has optical components with a diffusion circle of a given dimension and heat...
4209699 Infra-red detection system for detecting low-flying objects  
Method and apparatus for detecting the presence of low-flying objects including an infra-red sensor in which the electronic band width of the sensor is maintained relatively narrow during an...
4199682 Fire and explosion detection apparatus  
Fire and explosion detection apparatus comprises an ultra violet detector providing a first output signal in response to receipt of ultra violet radiation and an infra red detector providing a...
4193688 Optical scanning system  
An optical scanning system wherein infrared energy radiating from an object is directed to a Porro prism, such Porro prism being rotatable about the boresight axis of the optical scanning system...
4192372 Adjustable lever for fire detection system  
A fire detection system for rotary regenerative heat exchange apparatus having multiple detectors, each detector being mounted independently on an arcuately reciprocable scanning arm. The several...
4189747 Infrared tracking system  
A tracking system for automatically tracking a designated target in response to video signals provided by a scanning infrared imaging sensor. A gated tracker provides output signals which are...
4188531 Apparatus for scanning an air space for detecting low-flying airplanes and flying bodies  
Infra-red sensing apparatus for scanning an air space for detecting low-flying airplanes and flying bodies comprising a rotatable modulation screen arranged on a planar circular disc, and optical...
4183482 Night guiding device for self-propelled missiles  
A device for guiding by night self-propelled missiles, comprising a daylight sighting telescope and an infrared goniometer which in association are called here daylight localizing apparatus, for...
4174480 Method of detecting defective portions of metallic tank having thermally protective coating of polyurethane foam  
Defective portions of a metallic tank storing hot hydrocarbon oil therein and having a thermally protective coating of polyurethane foam adhered onto the side wall thereof, are detected by...
4168430 Process and apparatus for monitoring the quality of weld spots produced by resistance spot welding  
The invention relates to a method and apparatus for monitoring the quality of weld spots produced by resistance spot welding according to which a weld spot which has just been made is observed by...
4166955 Radiation detector and method of operating the same  
A radiation detector having at least one radiation sensitive element with more than two electrical contacts. The effects of noise occurring between pairs of contacts are substantially eliminated...
4162944 Spotting method and apparatus for coke oven batteries  
A method and apparatus for spotting a pusher machine or other door-handling machine in relation to a coke oven. The method and apparatus are particularly useful for aligning a door extractor...
4155007 Radiation scanning and detection system  
A radiation scanning-detecting and processing system having a composite detector arrangement including detector elements having mutually different sensitive areas. An information processing system...
4117327 Infrared deviation measuring device  
A deviation measuring device for localizing an infrared radiation source relative to an optical axis, comprising a focalization lens, a linear scanning device, an infrared detection device in the...
4112300 Infrared electronic countermeasures  
A device for jamming or damaging an enemy's infrared detection apparatus consists of the following equipment mounted on a tripod which is adjustable in azimuth and elevation: a multiple rod laser...
4110617 Infra-red profilometer  
An apparatus and method for determining the three-dimensional surface profile of the charge or burden in a furnace. A pair of infra-red radiation measuring instruments receives infra-red rays from...
4107530 Infrared acquisition device  
An infrared acquisition device is described which surveys a relatively large field of view in which an emissive target is likely to appear. An optical system focuses an image of the target onto a...
4100102 Composition for screening infra-red radiation  
A composition for nullifying detection with infra-red equipment consisting ssentially of a suspension of 30-40% by weight of aluminum particles in from 60 to 70% by weight of vaporizable...
4094225 Target detecting and locating system  
A system for detecting and locating a source of radiation in which an image orthicon tube, sensitive only to infrared emissions at the wavelength of the source, is scanned along first and second...
4087689 Boresighting system for infrared optical receiver and transmitter  
Accurate pointing of an infrared receiver or transmitter is provided by boresighting using a special beamsplitter and visible spectrum transmitting optics. The beamsplitter reflects the infrared...
4087688 Infrared radiation-burglary detector  
An infrared radiation-burglary detector comprising an optical system for focusing the radiation upon a radiation receiver. One or more internally reflecting prism surfaces enclose the axis of the...
4078179 Movable instrument with light emitting position indicator  
A movable instrument intended for utilization in detecting a difference which is capable of being optically detected between adjacent locations can be constructed so as to include an optical...