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6081619 Movement pattern recognizing apparatus for detecting movements of human bodies and number of passed persons  
A movement pattern recognizing apparatus has a movement signal detection device including a sensor for detecting a mobile body in a detection region and for providing a movement signal indicating...
6078050 Fire detector with event recordation  
A process and system for flame detection includes a microprocessor-controlled detector with at least three sensors. A wide band infrared sensor is used as the primary detector, with near band and...
6072572 Common aperture multi-sensor boresight mechanism  
A boresight mechanism 10 incorporating internal boresight target generator 28 to generate a boresight target signal for properly aligning first and second sensors 22, 24. Beam splitter 52 and...
6066850 Satellite attitude sensor using thermal imaging  
The present invention provides a method for distinguishing a boundary of an object, and the object itself, from its background. In the method electromagnetic radiation is detected from at least...
RE36706 Microstructure design for high IR sensitivity  
A microstructure design for high IR sensitivity having a two level infrared bolometer microstructure, the lower level having a reflective metal film surface such as Pt, Au, or Al to reflect IR...
6064067 High-gain infrared collector and data node  
An infrared collector employs a concentrator formed of a plurality of spatially related gradient-indexed (GRIN) lenses and a photodetector, interconnected by optical fibers. Since the GRIN lenses...
6051836 Low-profile dome-shaped multi-lens system  
A multi-lens system provides a plurality of sensitive areas of even size over a wide panoramic field of view and reduces an exposure height of the system above an installation plane, yet assuring...
6037593 Catoptric optical system for detecting motion of a radiant source  
A catoptric optical system enhances the ability of a radiation sensor to detect motion of a radiant source within a region of a three-dimensional space without need for a polyethylene lens array....
6007020 Missile for detecting and combatting enemy helicopters  
A missile for detecting and combatting enemy helicopters has an infrared homing head with an infrared lens and infrared sensor that will emit electrical signals, depending on incident infrared...
5986265 Infrared object detector  
Two pairs of pyroelectric devices are each mounted on a cone-shaped substrate to precisely control their alignment. Each cone-shaped substrate is a part of a sensor module which also supports an...
5929444 Aiming device using radiated energy  
An aiming device (or method) which monitors rotational and angular displacement changes with high precision. The detected changes in rotation and/or angular displacement are then used in various...
5929777 Radio activated personal infrared distress beacon  
A personal infrared beacon unit capable of being worn as an adornment of clothing, incorporated into a part of a person's attire, or embodied within a personal pager, a cellular phone or a 2-way...
5923250 Size discriminating dual element PIR detector  
A dual element PIR detector for a security system uses a series of beams in selected areas to limit the amount of radiation received from small domestic pets. A series of alternating beams define...
5903007 Method and apparatus compensating for radiance variations in horizon sensing  
A multiple detector array is positioned in a satellite orbiting the earth for determining the attitude of the satellite with respect to the earth by detecting the earth's horizon. The multiple...
5886821 Lens assembly for miniature motion sensor  
A motion sensor has a pyroelectric detector, a Fresnel lens array, a reducing lens, and a housing. The detector has two elements located side-by-side and the lens array has a plurality of lenslets...
5886632 Passive infrared motion detection circuit having four comparators  
A simplified analog passive infrared motion detection circuit operates using only four operational amplifiers. A first amplifier is used as part of a bandpass amplifier circuit, a second is used...
5877499 Composite fresnel lens having array of lens segments providing long narrow detection range  
A composite Fresnel lens useful in an infrared passive detection system includes an array of Fresnel lens segments having a given vertical centerline and a curvature of a given radius. The Fresnel...
5877855 Arrangement for the detection of targets  
An arrangement for detecting targets with an infrared sensor. The number of false alarms can be reduced by comparing image matrices generated by a detector in one revolution on the basis of...
5854713 Reflection type angle of view transforming optical apparatus  
In a reflection type angle of view transforming optical apparatus for transforming an angle of view in an image apparatus and so forth, sufficient strength can be provided and process is...
5844240 Infrared sensing device and method  
An infrared sensing device includes a condensing lens for gathering an infrared ray from a human body, a guide unit for dividing a room to be monitored into a plurality of lateral and vertical...
5844520 Surveillance apparatus  
In an infra-red surveillance system, a digital memory (1) has a storage location for each of a number of zones, defined by azimuth and elevation co-ordinates, the zones together covering 360° in...
5831391 Timer controlled outdoor ground lighting system with intruder detection  
An outdoor ground lighting system that includes one or more low voltage lamp units, provided from a step down transformer connectable to a high voltage AC power supply and an on/off timer...
5826820 Homing device system for missile  
A guidance system for guiding a missile to a target including an array of photosensitive elements arranged orthogonally to the axis of the missile, a scanning arrangement for enabling scanning of...
5818337 Masked passive infrared intrusion detection device and method of operation therefore  
A passive infrared intrusion detection device uses a dual element pyroelectric detector and a housing for surrounding and containing the dual element pyroelectric detector. The housing has a...
5789622 Focal plane array calibration method  
A method of calibrating gains and offsets for a two-dimensional detector array 10 comprising individual detector elements 14, including: (a) focusing a first incoming image signal at a first power...
5786644 Two wire PIR occupancy sensor utilizing a rechargeable energy storage device  
A two wire detection device includes a relay switch setable to a high and a low impedance state and electrically coupled between a first terminal of an AC source and a first leg of a load, a...
5786889 Method of monitoring coalignment of a sighting or surveillance sensor suite  
A method of monitoring the coalignment of a sighting or surveillance sensor suite including a coaligned laser (18) and sensor (12) includes the steps of: modifying the beam from the laser (18) to...
5775806 Infrared assessment system  
A process and system for determining the integrity of an object by analyzing its dynamic heat properties is disclosed. A properly functioning reference object is heated and an infrared camera is...
5753915 Arrangement and method for the detection of targets  
The invention relates to an arrangement and a method for suppressing spurious targets, particularly those caused by birds, in an infrared search device. Potential targets that show comparatively...
5744801 Earth horizon sensor with staggered array of sensors  
The earth horizon sensor apparatus uses first and second linear sensor arrays of sensor elements, the first and second linear sensor arrays being staggered with respect to each other. The sensor...
5739753 Detector system with adjustable field of view  
A sensor system to turn on room lights when a person enters such room but avoids nuisance tripping of the system when a person passes near but outside of the region to be monitored. The inclusion...
5734466 Alignment, code and power test of airborne laser designators  
This invention relates to laser guided weapon systems and in particular to boresighting a designator laser to a forward looking infrared (FLIR) sighting system that is at a wavelength other than...
5726451 Scan type fire detecting apparatus  
A scan type fire detecting apparatus is provided with a scanning unit which stepwise scans a monitoring area in a horizontal direction and vertically scans at each step of the horizontal scan to...
5703367 Human occupancy detection method and system for implementing the same  
A primary object of the invention is to provide a method and system for detecting humans present in a restricted space, particularly, in a commuter train, a building, etc., by using an infrared...
5693943 Passive infrared intrusion detector  
An intrusion detector for supervising a region including a sensor which views a plurality of fields-of-view of the region and provides an output responsive to motion of an infrared radiation...
5686889 Infrared sniper detection enhancement  
Firing of small arms results in a muzzle flash that produces a distinctive ignature conducive to automated or machine-aided detection with an IR (infrared) imager. The muzzle flash is intense and...
5678924 Power meter head for laser power measurement apparatus  
Apparatus for measuring laser power includes a target disc of a predetermined thickness located within, and in thermal contact with, a heat-sink. The heat-sink has an opening therein for directing...
5677533 Apparatus for detecting abnormally high temperature conditions in the wheels and bearings of moving railroad cars  
A method and apparatus are disclosed for sensing the temperature of bearings of vehicles traveling along a track, the apparatus including a linear-array infrared detector positioned adjacent to...
5661370 Multi-positionable motion activated light switch  
A multi-positionable motion activated light switch including a male/female adaptor assembly having a male plug portion that is mechanically and electrically mateable with an existing light bulb...
5646406 Stroboscopic photometer  
An apparatus for collecting photons emitted by hot spots in an integrated circuit. Means are provided for intermittently energizing the circuit. A photon receptor detects the photons emitted by...
5644386 Visual recognition system for LADAR sensors  
A visual recognition system is disclosed for detecting a target within a scene. A LADAR system and method is employed for scanning laser light signals across a scene having a target to be...
5641963 Infrared location system  
An improved IR detector system is described which uses a plurality of IR detection modules coupled to a central computer to determine the location of an intrusion to the system. Each IR detection...
5638164 Apparatus and method for laser imaging  
This invention discloses a laser imager for imaging a scene having targets comprising a laser scanner operative to scan the scene at a given spacing with a laser beam, a receiver which receives...
5631654 Ballistic projectile trajectory determining system  
A computer controlled system determines the three-dimensional trajectory of a ballistic projectile. To initialize the system, predictions of state parameters for a ballistic projectile are...
5627375 Circuit arrangement for a sanitary apparatus  
A circuit arrangement for controlling a sanitary device in a non-contact manner includes a pyroelectric sensing circuit for detecting a temperature in a predetermined location and outputting a...
5592151 Fire monitoring system  
A fire monitoring system for waste bunkers includes a pair of infrared cameras, which are arranged on an axis of rotation. The axis of rotation is connected to a controllable drive motor and to an...
5578825 Infrared ray sensor driving circuit  
An improved infrared ray sensor driving circuit capable of advantageously controlling an amplifying level and a cut-off frequency of a filter by separating the functions of an amplifier and a...
5578828 Flame sensor window coating compensation  
Intensity of optical emission from a combustion flame within a gas turbine combustor is monitored through an optical window in the combustor wall by a primary detector. Because the window is...
5574225 Apparatus and a method for detecting the position of a laser beam  
In a method of detecting the spatial position of a laser beam relative to a body locatable in the path of the laser beam by detecting an acoustic signal produced by the beam in the body, wherein...
5565683 Heat source detector  
A heat source detector includes an infrared sensor 1 wherein plural infrared ray sensing elements 7 on which an infrared image is formed by an infrared lens 10 are arranged into an array form; and...