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5066855 Infrared intrusion detector  
An improved infrared intrusion detector is provided which conveniently and expeditiously monitors two fields of view by use of a single sensor. In a preferred embodiment, the improved intrusion...
5059796 Infrared monitoring system  
An infrared monitoring system includes a histogram calculation circuit which detects an alarm area having a plurality of pixels more than a threshold number of pixels and having a temperature...
5059953 Infrared overheat and fire detection system  
A system for detecting an overheat condition in aircraft preferably includes two control units each connected to eight thermal imaging modules. The thermal imaging modules monitor the cargo by for...
5055685 Infrared detecting apparatus  
An infrared detecting apparatus which includes an infrared filter which intercepts visible light and transmits infrared rays having at least two infrared detecting elements for receiving infrared...
5055689 Horizon sensor apparatus and method therefor  
A horizon sensor for spacecraft utilizes two or three telescopes, each imaging upon a linear array of pyroelectric elements. The telescopes are pointed at the earth's horizon and the transition or...
5051591 Reflective chopper for infrared imaging systems  
A chopper, in an infrared imaging system, is used to scatter infrared radiation from a viewed scene. This scattered radiation is detected with an infrared detector and used to produce a reference...
5049756 Method and system for detecting forest fires  
A method of detecting a heat source in an area to be watched consists of disposing a detector on a support elevated with respect to the area to effect a sweeping motion at least in a horizontal...
5045702 Infrared intrustion detector  
A passive infrared intrusion detector provides improved intruder detection while using a single signal evaluation channel. Pyroelectric sensor element configurations include a diamond pattern with...
5026989 System for monitoring material dispensed onto a substrate  
A system for monitoring energy radiant from a material dispensed onto a substrate. As disclosed, an infrared sensor is positioned to receive infrared energy radiated by a substrate and by a heated...
5026990 Method and apparatus for installing infrared sensors in intrusion detection systems  
Apparatus and a method for previewing the field of coverage of an infrared sensor and, accordingly, adjusting its position for use in an intrusion detection alarm system. A mirror can be mounted...
5025149 Integrated multi-spectral boresight target generator  
An integrated multi-spectral target generator for use with electro-optical systems that comprise visible and infrared sensors and a laser designator. A pinhole is illuminated with a multiband...
5021663 Infrared detector  
Preferred embodiments include a monolithic uncooled infrared detector array of bolometers fabricated over a silicon substrate (142); the bolometers include a stack (144) of oxide (146) TiN (148),...
5017783 360 degree field of view optical sensing device  
A 360° pattern field of view optical system for passive infrared detection device is disclosed. The optical system uses a combination of a fresnel lens and a fresnel prism to gather infrared...
5015994 Security light controlled by motion detector  
A novel illumination device is provided which is small, inexpensive, and conveniently plugs into a standard power outlet, thereby allowing easy installation and deinstallation by nontechnical...
5012099 Intrusion detection and identification arrangement for land vehicles  
The arrangement (201) comprises an optical narrow detection beam (203) focussing system for a passive infrared radiation in accordance with a reference plane (U). A filter selects the spectral...
5008522 Device for the selective detection of objects  
A device for the selective detection of objects, such as aircraft, missiles, helicopters and the like, by detecting outgoing rays emitted from the objects, preferably infrared rays, comprises at...
5008543 System for determining the position of at least one target by triangulation  
A system is disclosed for determining the position of at least one target by triangulation, comprising two passive sighting devices which measure the intensity of radiation received along a...
5006712 Catoptric differential sensing device  
A radiation detector comprising a first pair of flat reflective surfces parallel to one another and connected by a second pair of flat rectangular reflective surfaces converging toward one another...
5003293 Billboard with audio message spreading function  
A message spreading apparatus is disclosed to generate an audio message output in response to the presence of a heat radiation generated by body heat. A housing has a front wall provided with an...
4999499 Method of inspecting solder joints with a laser inspection system  
A method of inspecting solder joints of a circuit card assembly with a laser inspection system having a laser adapted to be operated at a high power in watts to produce a laser beam for a...
4999610 Multi-range infrared detector  
An infrared detection system having a detector which includes elements of different sizes which are electrically selectable to change the operational range of the system without any change in the...
4996426 Device for subsurface flaw detection in reflective materials by thermal transfer imaging  
Apparatus for nondestructive detection of subsurface defects in a continuously moving workpiece of sheet material by using an infrared thermal imager. The temperature of a portion of the surface...
4993049 Electronic management system employing radar type infrared emitter and sensor combined with counter  
An infrared sensitive system which maintains an inventory of the number of occupants within a monitored room for controlling certain electronic equipment in response to the presence of occupants...
4990783 Range insensitive infrared intrusion detector  
An infrared detector is described for monitoring a corridor like room having a plurality of focusing means for the collection of infrared radiation emitted by an intruder. The field of view of...
4987305 Infra-red sensing system  
An IR sensing system wherein the focal area is located outside the casing at holds a detector array and a bundle of optical fibres leads from the focal area to the detector array in the array such...
4983837 Forward looking infrared imaging system  
Apparatus and methods for modifying existing forward looking infrared systems and for forming new forward looking infrared systems. Generally, the system comprises a Galilean afocal system in...
4982094 Passive type crime-preventing infrared sensor provided with a mechanism of monitoring an obstruction for the visual field  
The disclosure relates to a crime-preventing infrared sensor of a passive type in which the infrared detecting element 6 detects the energy of infrared rays radiated from an object in a...
4982176 Solar powered lighting and alarm systems activated by motion detection  
Solar powered outdoor lighting and/or alarm systems are provided and include a light source or alarm, a passive infrared (PIR) sensor in conjunction with a battery recharged via solar cells, and a...
4975573 Optical test bench  
An optical test bench for testing the technical characteristics of electromagnetic wave sensors and emitters of an air and ground surveillance electro-optical module mounted on a missile firing...
4970494 Radio controlled home security system  
A security system has a wall mounted assembly for installation adjacent an entry door and includes a motion detector for sensing intruders, an alarm for sounding a warning, an alarm circuit, a...
4965453 Multiple aperture ir sensor  
A multi-aperture, non-imaging sensing system is disclosed, for guiding a moving projectile toward a source of infrared energy. The detectors are arranged peripherally about a forward portion of...
4964735 Apparatus for indicating the power and position of a laser beam  
An apparatus (12) for providing information about the power and position of a high laser beam includes a heat absorbing body (46) having a target area within which the laser beam is directed....
4963749 Quad element intrusion detection  
A dual channel intrusion detection system comprising first and second radiation sensors. Each sensor has a pair of elements viewing adjacent zones of the protected area, the zones being slightly...
4958077 Method and apparatus for displaying moving objects  
The present invention is concerned with displaying moving objects (targets) wherein two time-shifted object signatures are imaged on a detector. Target scanning is with a prismatic rotating wheel,...
4955728 Method and apparatus of distinguishing between live and dead poultry eggs  
The invention is an apparatus for using infrared radiation to distinguish between live and dead poultry eggs. The apparatus comprises a plurality of infrared sensors, means for moving a fixed...
4955236 Method for observation of vibration mode  
Method for observation of vibration mode in which a substance inclusive of structures and materials to be observed in vibration mode is vibrated, heat generated by giving vibration is held at the...
4952809 Imaging system  
An infra-red imaging system is operable selectively in wide and narrow field of view modes. Radiation from the object is imaged onto an infra-red CCD staring focal plane array (SFPA) which...
4950076 Alternate approach for obtaining dynamic range in monopulse guidance systems  
A system for improving the dynamic range of guidance systems for missiles d bombs by replacing pseudo-logarithmic amplifiers in the processing circuits with transimpedance amplifiers having feed...
4948973 Nonlinear optical interrogation system  
A method and means for detecting the presence of infrared radiation and/or he presence of an optical dielectric transmitting element, such as a lens or window, is provided. By correlating the...
4947044 Method and apparatus for covertly viewing a target using infrared radiation  
A method and apparatus for covertly viewing a target using transmission of infrared radiation through an atmosphere having given atmospheric conditions. The target is illuminated with only a...
4944588 System for detecting laser radiation  
An alarm system for military objects of a laser-radiating hostile weapon system. A plurality of units for detecting impinging laser radiation are mounted on an airplane, for example. Each...
4943800 Intrusion detection system using three pyroelectric sensors  
The intrusion detection system of the invention, in which three pyroelectric detectors are disposed in line with a interval and an adjoining two of the three pyroelectric detectors are...
4939359 Intrusion detection system with zone location  
An intrusion detection system includes housing structure with a radiation entrance aperture, a sensor responsive to infrared radiation mounted in the housing structure. Optical system structure in...
4933560 Pyroelectric infrared sensors  
An infrared radiation sensor is provided comprising an infrared optical system and a pyroelectric radiation detector for receiving infrared radiation from the optical system and generating an...
4930864 Domed segmented lens systems  
An improved optical assembly which provides a panoramic field of view for infrared motion detection. In one form of the invention the optical assembly comprises a spherical section having an inner...
4929833 Feedback stabilized digital infrared detector circuit  
A digital infrared detector circuit which converts changes in detector current to time varying pulses and uses feedback to adjust the coincidence of a reference signal with the trigger signal to...
4920268 Passive infrared detection system with substantially uniform sensitivity over multiple detection zones  
A passive infrared detection system includes a reflective optical system comprising a focusing element (e.g. an elliptical or parabolic reflector) having an apparent focal length dependent upon...
4917490 Boresight alignment measuring apparatus and method for electro-optic systems  
An apparatus and method are provided for static and dynamic testing of the boresight alignment of an electro-optic system, the system having a line-of-sight sensor responsive to first radiation...
4914298 Infrared detector with direction identification capability  
An infrared detector includes process and circuitry for detecting the direction of movement of a radiation source with a predetermined resolution. Four radiation-sensitive elements defining a...
4912748 Infrared intrusion detector with a plurality of infrared ray detecting elements  
A personal body detecting device makes it possible to determine the presence and absence of a personal body in a detecting zone by sensing infrared rays in the zone with a plurality of infrared...