Abstract: Laser light pulses are reflected off a scanning mirror. A time-of-flight distance measurement device receives reflected light pulses and determines distances. The light pulses have abrupt changes in amplitude. Reflected pulses are differentiated to reduce sensitivity to amplitude variations. Differentiated pulses may be compressed to keep the receiver from saturating. Distance measurements are combined with location information to produce a 3D image of a surface.

Abstract: Provided is a 3D eyeglass of a shutter type. In the 3D eyeglass, a case in which infrared ray shielding surface is formed is provided on a front surface of a 3D eyeglass sensor, and a telephoto lens for telescoping and collecting light is provided on an inner-front surface of the case wherein a diameter of the telephoto lens is 1.5 times great as or greater than a diameter of the sensor to increase a collecting capability of infrared ray to 1.5 times as a prior art, and a focal point distance of the telephoto lens is 2-40 mm and is movable for the sensor to be focused on a screen at remote distance. Accordingly, infrared ray interference from an external light can be avoided and 3D signal on a specific picture can be amplified and sensed, and thereby viewing a clear 3D images.

Abstract: A method and apparatus for the photo-acoustic identification and quantification of one or more analyte species present in a gaseous or liquid medium in low concentration utilizing a laser and a resonant optical cavity containing the medium and having within the cavity at least two partially transparent mirrors, one of which is a cavity coupling mirror and one of which is moveably mounted on an assembly responsive to an input signal.

Abstract: A human body sensing device comprises: an infrared sensor which detects a human body; a rotatable group of lenses having a plurality of lenses arranged around the sensor, the lenses being configured to: generate unit sensing zones defined by a sensing distance extending radially outwardly from the group and a small width extending in a rotation direction of the group; and form a plurality of alternating layers of a regional sensing zone including one or more than one of the unit sensing zones and a non-sensing zone not including any of the unit sensing zones, in a rotation direction of the group; a rotary drive which rotates the group; a rotation position sensor which detects a rotation position of the group; and a recognizer which recognizes the location and/or movement of a human body based on the output level indicated by the infrared sensor and the rotation position.

Abstract: One or more embodiments of the invention provide for a lens package comprising a housing having a vacuum compatible interior space, a base coupled to the housing, a lens coupled to the housing, and an infrared detector within the housing for providing infrared images representative of infrared energy received through the lens. The housing, base, and lens are adapted to form an infrared detector vacuum package assembly. The housing may include a focal alignment feature that allows for focal adjustment of the lens relative to the infrared detector by applying pressure to at least a portion of the housing.

Abstract: A heating cooker including an infrared ray detection device is disclosed. The heating cooker includes a body, an inner case disposed within the body, and provided therein with a cooking chamber to cook food, a detection hole formed at one side wall of the inner case, to allow an infrared ray generated in the cooking chamber to exit outwardly from the cooking chamber, a path change unit disposed in the vicinity of the detection hole, to change a path of the infrared ray passing through the detection hole, and an infrared sensor disposed to be spaced apart from the path change unit, to receive the infrared ray, the path of which has been changed. The path change unit is rotatable to enable the infrared sensor to receive infrared rays having different paths while being generated in different regions in the cooking chamber.

Abstract: According to some embodiments, an apparatus having a first sensor having a first adjustable lens and a second sensor having a second adjustable lens is disclosed. A controller is coupled to the first sensor and the second sensor. The controller is to cause the first sensor and the second sensor to operate independently in a first mode and is to cause the first motion sensor and the second motion sensor to operate interdependently in a second mode.

Abstract: According to one embodiment of the present invention, a system for viewing an area includes a dewar and an optical system positioned within the dewar. The dewar permits operation of the flux detector at cryogenic temperatures, in some embodiments. The optical system includes an infrared radiation system capable of focusing one or more light beams. The inclusion of the optical system within the cryogenic space of the dewar allows reduction of the overall system length and weight, if desired.

Abstract: In a terahertz imaging system, a scanning component for scanning a field of view is tracked by an optical beam to obtain positional information. The optical tracking beam can be steered by the scanning component for example by reflection, refraction or diffraction. The steered tracking beam can then be detected by a spatially sensitive detector such as a charge-coupled device array. In a preferred embodiment, the output of a terahertz detector receiving terahertz radiation from the scanned field of view is used to modulate the tracking beam. This means that the spatially sensitive detector can provide an image directly derived from the scanning of the field of view by the terahertz radiation.

Abstract: A portable infrared (IR) detection system can be used to scan an adjacent terrain and detect an IR source, such as a person or animal, by detecting heat emitted therefrom. Humans, animals and other sources emit IR radiation which can be detected by an IR detector. The emitted radiation is captured by a tube and reflected onto a sensor using a parabolic or other reflector. The sensor is connected to a display component for producing an audible, visual, or vibrational alert. Activities such as hunting, boating, and camping, often accompany situations where detection of a human, animal, or other heat source can be a valuable tool. This invention provides a portable IR detection system for use in these and other activities, the portable detection system being collapsible, portable and cost-efficient.

Abstract: A THz radiation probe (1) for examining an object (8), the probe comprising a first portion configured to be inserted into an opening of said object in a first direction (5), said probe further comprising at least one THz emitter (15), directing means (7) for directing THz radiation emitted from said emitter to said object via an aperture (2) located at said first portion and subsequently from said object to at least one THz detector (17) and, means for scanning said emitted THz radiation across said object in a scan direction, said scan direction having a component in said first direction (5).

Abstract: The invention relates to a device and method for communicating with a thermal detector module and an appropriate thermal detector for a use with such a control device. The device for communicating with a thermal detector module comprises a means for providing a collimated beam of thermal infrared radiation and means for modulating the intensity of the collimated beam of thermal infrared radiation. The intensity modulated thermal infrared beam, when directed on to the thermal detector module from a position within the module's field of view, is suitable for triggering a response from the thermal detector module. The intensity modulated thermal infrared beam may also be encoded with a digital signal to control the function of the thermal detector.

Abstract: A terahertz time-domain spectrometer scanning sensor system includes a transmitter and a receiver that are secured to a mobile scanner head. Optical pump light, in the form of short pulses launched from a stationary laser located remotely from the scanner head, is delivered to the transmitter and receiver through a controlled fiber optic cable arrangement so that variations in temporal pulse relays that are associated fiber optic transmission are minimized. In this fashion, the movement of the fiber optic cable is maneuvered along a defined path so as to control the bends in the cable and thus minimize variations in temporal delays that can otherwise arise as the pulses of light are transmitted through the fiber. Pulses of laser light launched from the laser into the optical fiber will exit the cable with consistent (i) time of arrival, (ii) phase duration, and (iii) polarization state and energy.

Abstract: The invention provides a spatially-selective reflective structure for the detection of submillimeter electromagnetic waves and systems and methods incorporating spatially-selective reflective structures. One aspect of the invention provides a spatially-selective reflective structure including a partially-conducting slab and a modulating reflector disk adjacent to the partially-conducting slab. The modulating reflector disk includes a plurality of modulations. Another aspect of the invention provides a submillimeter imaging device including submillimeter wave optics, a spatially-selective reflective structure located in the focal plane of the submillimeter wave optics, a submillimeter wave receiver positioned to capture waves reflected from the spatially-selective reflective structure, and a motor configured to rotate the spatially-selective reflective structure.

Abstract: An apparatus for enabling and disabling a lookdown zone mask in an intrusion detector unit. The unit may include a passive infrared motion detector, a lens assembly, and a mask or cover which selectively enables and disables a lookdown zone associated with the detector. The lens assembly provides a lens proximate the detector. The lens provides the lookdown zone. When the mask substantially covers the lens, the lookdown zone is disabled because the path of radiant energy to the detector is blocked and prevents the detector from detecting any motion in the lookdown zone. When the mask does not cover the lens, the lookdown zone is enabled because the lens permits the path of radiant energy to the detector through the lens and allows the detector to detect any motion in the lookdown zone.

Abstract: Provided are a terahertz wave transmission and reception (Tx/Rx) module package and method of manufacturing the same. The complete and separate terahertz wave Tx/Rx module package is implemented by simply aligning a silicon ball lens, a photoconductive antenna and a focusing lens, and thus facilitates generation or measurement of a terahertz wave. The terahertz wave Tx/Rx module package and method can remarkably reduce time and cost required to build a terahertz wave generation and measurement system, and simplify and miniaturize the terahertz wave generation and measurement system. In addition, characteristics of a terahertz wave generated by the photoconductive antenna can be simply measured. Furthermore, the terahertz wave Tx/Rx module package can be stored and transported with a photoconductive antenna, a silicon ball lens and a focusing lens kept aligned as they are, and also it is possible to minimize pollution of terahertz wave devices caused by surroundings.

Abstract: An apparatus and method for imaging incoming radiation. The apparatus includes a radiation shield unit having a cavity. A detector array is positioned at least partially within the cavity and has a planar surface with at least one infrared detector affixed on the detector array. A diffractive optical array is positioned within the cavity and is in thermal communication with the radiation shield unit. The diffractive optical array is configured to diffract and direct the spectral components of the incoming radiation onto the detector array. The apparatus is in an external environment having a predetermined ambient temperature. The radiation shield unit, diffractive optical array and detector array may be temperature-controlled to a temperature that is within a few degrees of the ambient temperature. The radiation shield unit, diffractive optical array and detector array may be temperature-controlled to cryogenic temperatures.

Abstract: This invention relates generally to the field of motion detection sensors, and in particular to a system and method for adjusting the position of a printed circuit board relative to a focusing element. The invention includes a housing having a front opening and an interior cavity. A focusing element is located within the front opening and the detector is coupled to a printed circuit board located within the interior cavity. A cover is coupled to the printed circuit board and disposed within the interior cavity. A cam is operatively coupled with the cover and the printed circuit board for adjusting the position of the printed circuit board such that the detector's position is adjusted relative to the focusing element.

Abstract: Reflective movable mirrors are used to reflect an image from a desired direction into the lens of a camera. This apparatus is preferably used with infrared (IR) cameras. To capture images from different directions, the orientations of the mirrors are modified. The mirrors are light, requiring only miniature motors and actuators for moving them. The mirrors are also much smaller than the focal plane electronics and the IR lens, requiring much less space for moving them than would be required for moving the camera. This provides a pointing capability for an airframe-fixed IR camera and this capability is provided with minimum additional payload, space and power requirements. The apparatus and method can be used for IR and electro-optical (EO) cameras.

Abstract: A laser beam steering module includes an optics assembly that directs a first portion of a laser beam through an output aperture and a second portion of through a sensing path. The optics assembly adjusts a position of the laser beam through the output aperture and sensing path responsive to position control signals. A sensor array in the sensing path receives the second portion of the laser beam and in response thereto generates electrical beam position signals indicating a position of laser beam through the output aperture. The electrical beam position signals have values that are a function of a temperature of the sensor array and are used in generating the position control signals to adjust the position of the laser beam as a function of the values of the electrical beam position signals. A thermal stabilization circuit stabilizes the temperature of the sensor array responsive to thermal control signals.

Abstract: A sun detection sensor assembly for attachment to a thermal imaging device, comprising an elongated tubular body having two ends and a sensor, characterized as Sun TECT sensor, attached to one end, the Sun TECT sensor having a tubular body, an IR window positioned at one end of the tubular body, and a photo a infrared photo transistor positioned within the tubular body, opposite the IR window, the infrared photo transistor having a photo sensitive surface for detecting the exposure from sun when the sun is within a field of view of the Sun TECT Sensor, and an automatic ON/OFF mechanism which is activated by the infrared photo transistor and protecting the thermal imaging device from undesired and harmful infrared radiation.

Abstract: A motion-activated decorative lighting fixture with a PIR motion detector hidden behind a decorative slotted wall of the fixture body. The motion-activated decorative lighting fixture includes a motion detector housing that forms an integral part of the lighting fixture body. The housing includes a slotted vertically extending exterior wall around the housing with an array of elongate vertically extending slots horizontally spaced apart from one another and extending along at least a portion of the wall. One or more PIR sensors are disposed within the housing, and a segmented Fresnel lens array is disposed within the housing behind the slots to direct infra-red energy from a monitored field of view to a sensor. The lens array includes a plurality of columns of lenslets, at least a portion of which have at least two lenslets disposed one above the other. Each column is aligned with a corresponding slot so as to direct infra-red energy from a monitored zone passing through the corresponding slot to a sensor.

Abstract: A micromechanical device including an improved sensing element and improved bending elements is described. Sensing elements include multi-layered structures which are thinner, lighter, and flatter than structures presently known within the related arts. Bending elements include structures which separately respond to illumination by an infrared source so as to twist a sensing element. Micromechanical pixels may be arranged to form two-dimensional arrays of infrared sensitive pixels. Arrays of micromechanical pixels are applicable to imaging devices for use within the fields of security and surveillance, firefighting, automotive safety, and industrial monitoring.

Abstract: A motion-activated decorative lighting fixture with a PIR motion detector having an adjustable field of view hidden behind a decorative slotted wall of the fixture body. The lighting fixture includes a motion detector housing that forms an integral part of the fixture body. The housing includes a slotted vertically extending exterior wall around the housing with an array of elongate vertically extending slots horizontally spaced apart from one another and extending along at least a portion of the wall. One or more PIR sensors are disposed within the housing, and a segmented Fresnel lens array is disposed within the housing behind the slots to direct infra-red energy from a monitored field of view to a sensor. The lens array includes a plurality of columns of lenslets, which are divided into at least two sets of columns, the columns of the first set alternating with the columns of the second set so as to form an alternating sequence of columns.

Abstract: An imaging apparatus uses focusing and collecting optics in combination with steering optics for efficient and speedy imaging of a target using an extended terahertz electro-magnetic range challenged by weak sources and low sensitivity of detection. This invention addresses efficient detection of this wave in combination with a speedy imaging speed. By proper location of optics to utilize angular conversion of the beam to a lateral scan, a rastering imaging apparatus is demonstrated without moving target or entire imaging system. A mirror-lens set is used to steer the terahertz (THz) beam along and (or) to collect the THz beam from each point of the target. The target is imaged with a much higher speed than when moving the target or the entire imaging system. A THz wave image can be taken at video frequency for practical usage of the apparatus in diverse application areas, where it has not been considered to be feasible.

Abstract: A thermal infrared camera may be used under a wide variety of target-scene radiation conditions, with interchangeable or zoom lenses requiring matching or different size cold stops. A variable aperture assembly of a thermal infrared camera integrates a rigid open truss-like framework that's capped by an aperture ring and bottomed by a driving ring, and a radiation shield, located inside the framework, that contains an aperture ring at an upper side. A plurality of blades that collectively define an aperture positioned between the upper aperture rings. Opposite blade ends are coupled to respective ones of the two aperture rings, permitting pivotal movement in one ring and radial movement in the other ring, when the rings are rotated relative to one another, to change the size of the formed aperture. Both refractive and reflective infrared telescopes may be retro-fitted with variable aperture devices to enhance infrared imaging performance.

Abstract: An analysis apparatus and analysis method are provided for obtaining information on a sample from change in propagation state of a magnetic wave caused thereby, with less influence of frequency characteristics on the detection unit side. The analysis apparatus comprises a generating unit for generating a terahertz wave, a signal-making unit for making a code pattern, a delaying unit for delaying the code pattern produced by the signal-making unit, a band-diffusing unit for diffusing a band of the terahertz wave by modifying the phase of the terahertz wave generated by the generating unit in accordance with the code pattern produced by the signal-making unit, a detecting unit for detecting the terahertz wave, and a band-restoring unit for restoring the band by modulating the phase of the terahertz wave in accordance with the code pattern being output from the delaying unit before detection by the detecting unit.

Abstract: A Scanning Time-Resolved Emission (S-TRE) microscope or system includes an optical system configured to collect light from emissions of light generated by a device under test (DUT). A scanning system is configured to permit the emissions of light to be collected from positions across the DUT in accordance with a scan pattern. A timing photodetector is configured to detect a single photon or photons of the emissions of light from the particular positions across the DUT such that the emissions of light are correlated to the positions to create a time-dependent map of the emissions of light across the DUT.

Abstract: Embodiments include an imaging system that includes a collimator support base and a detector assembly. The collimator support base is configured to interchangeably accept a slit aperture collimator and a pinhole aperture collimator. The slit aperture collimator has either a corresponding septa assembly or a corresponding crossed-slit collimator. The detector assembly is configured to detect collimated gamma rays emanating from a subject in a field of view of the imaging system and generate one or more signals in response to the detected gamma rays. Methods of adjusting performance of imaging systems are also provided.

Abstract: Methods and apparatus for screening diverse arrays of materials using infrared imaging techniques are provided. Typically, each of the individual materials on the array will be screened or interrogated for the same material characteristic. Once screened, the individual materials may be ranked or otherwise compared relative to each other with respect to the material characteristic under investigation. According to one aspect, infrared imaging techniques are used to identify the active sites within an array of compounds by monitoring the temperature change resulting from a reaction. This same technique can also be used to quantify the stability of each new material within an array of compounds. According to another aspect, identification and characterization of condensed phase products is achieved, wherein library elements are activated by a heat source serially, or in parallel.

Abstract: A radiation surveillance sensor system includes a radiation responsive sensor, a lightweight, radiation reflective member for selectively adjusting the incident radiation path to the sensor, and power means for controlling the position of the reflective member to achieve pan, tilt, or zoom functions for obtaining predetermined selectable view locations of the sensor. Similarly, a method for selectively controlling deflection of radiation from a field to be monitored by generating a 360 degree panoramic field of view includes the steps of fixedly positioning a radiation sensor for receiving radiation from a field to be observed, movably positioning a mirror-like surface for selectively reflecting radiation from the field to be observed towards the sensor, and rotatably driving the reflective mirror to selectively reflect radiation from the mirror to the fixedly mounted sensor to achieve up to a 360 degree panoramic view.

Abstract: A non-destructive inspection device has an infrared sensor for infrared thermography inspection of a structure or surface. A rotatable reflector reflects infrared light from an inspected surface to an infrared sensor. An inspecting portion of a non-destructive device is magnetically coupled to an actuating portion of the device for concerted movement of the portions. An inspection device includes both an infrared sensor for infrared imaging and an optical device such as a camera for visible light imaging.

Abstract: A system and method for detecting radiation indicative of fire, such as forest fire. In one embodiment, a threshold energy level is determined based on ambient sensor conditions. A sensor unit may be setup to scan a predetermined area for electromagnetic radiation. Any detected electromagnetic radiation may then be band pass filtered to a wavelength range centered about a predetermined frequency associated with the presence of fire. The resulting energy level signal may then be further filter to pass only those signals which exhibit a “flicker” frequency. If the resulting filtered signal exceeds the threshold signal, a fire notification signal may then be generated.

Abstract: A method of inspecting a DNA chip and an apparatus therefor that allow a picture to be reconstructed in the following steps: A plurality of irradiation spots are formed on a DNA probe array mounted on a stage. Then, the stage is displaced in X, Y directions so as to execute a scanning, thereby irradiating substantially all the entire surface of the DNA probe array. Next, a plurality of emitted fluorescent lights, which are generated from the plurality of irradiation spot portions on the DNA probe array, are converged and are then detected simultaneously by multi detectors. Finally, a data processing apparatus processes the detected signals, thereby reconstructing the picture.

Abstract: A continuously variable diaphragm or swappable fixed aperture for use in thermal infrared cameras, which aperture or diaphragm can be cooled to cryogenic temperatures. The invention contemplates mounting aperture control means, if necessary, in a vacuum or extending the control mechanism through a vacuum in a thermally isolated manner to avoid radiation load on the photocell. The inventive method implements such a diaphragm and control system. The invention makes possible the object of using a single thermal infrared camera under a wide variety of target-scene radiation conditions that may be rapidly changing, with interchangeable or zoom camera lenses requiring matching or different size cold stops, and under other such dynamic situations.

Abstract: A radiation sensitive sensor (1) which detects electromagnetic radiation within a narrow band of the electromagnetic spectrum using a single, fixed infrared detector (12) to cover a 360° area in a plurality of segmented sectors obtained by rotation of a mirror (19) for each of the sectors with detection of the radiation from each sector providing an indication of the presence of a physical phenomena (50) such as a forest fire. The use of a single fixed detector and the mirror rotation allows for a solar powered unit which is able to be employed either singularly or in a system of grid locations to cover a wide sensor area in order to provide continuous operation and reliable alarm indications.

Abstract: A method and apparatus for integrating photovoltaic cells into a ground plane of satellite and terrestrial antenna systems is disclosed. The system provides an increase in available surface area for power generation without increasing the overall size. In one embodiment, a substrate has both photovoltaic cells and a conductive spacer formed on one side, where the conductive spacer has a thickness substantially equal to the thickness of the photovoltaic cells. In another embodiment, an antennae element may be formed on the top side of the conductive spacer, where the photovoltaic cells form a ground plane for the antenna element.

Abstract: A driver vision enhancing system having a variable field of regard and a method of controlling the field of regard of a driver vision enhancing system. The system includes a housing, a movable sensor assembly located within the housing, a radiation detector connected to one end of the sensor assembly, and an actuator connected to the housing and able to contact the sensor assembly to move the sensor assembly in the housing and thereby move the radiation detector. The method includes moving a radiation detector as part of a driver vision enhancing system in a vertical direction within an image plane of the driver vision enhancing system.

Abstract: A deflector which makes multilayered wiring possible and prevents contamination during the manufacture includes an electrode substrate (400) having a plurality of through holes, and an electrode pair made up of first and second electrodes which oppose the side walls of each through hole in order to control the locus of a charged particle beam passing through the through hole, and a wiring substrate (500) having connection wiring pads connected to the electrode pairs of the electrode substrate to individually apply voltages to the electrode pairs. This deflector is formed by bonding the electrode substrate and wiring substrate via the connection wiring pads of the wiring substrate.

Abstract: Mirror elements are selectively interposable in the beam paths in a dual aperture microspectrometer system to selectively bypass the aperture element in transmission or reflection modes to increase optical throughput and field of view. The system may be operated in a dual aperture transmission mode or reflection mode and in modes in which the aperture is bypassed before or after the infrared beam reaches the sample. The system may be operated to bypass the aperture both before and after the sample, which may be utilized with an array detector having multiple detector elements in which an image of the sample is formed on the array detector.

Abstract: An efficient approach to exploit hyperspectral imagery and detect target of interest is disclosed. This approach uses proximity pixels as reference signatures to detect potential discontinuity that represents material of unknown existing on the terrain. By incorporating signature of a chosen material of interest, this approach provides an effective way for target detection and identification. An evolutionary algorithm is employed to estimate the abundance of material of interest.

Abstract: The present invention provides an analysis of displacement by calculating the phase variance image P? (k, l) between Fourier transformed images of paired images S1 (n, m) and S2 (n, m) to determine the center of gravity of ? peak appearing on the invert Fourier transform image of the images. The present invention provides numerous advantages such as a precision of displacement analysis of a fraction of pixel to thereby allow to improve the precision of focal analysis, or reduced number of pixels required to achieve the same precision, evaluation of reliability of the analysis by using the ? peak intensity, influence of varying background reduced by using a phase variance component. The improved performance by the present invention allows any operator skilled or not to achieve a best focusing.

Abstract: A radiation sensitive sensor (1) which detects electromagnetic radiation within a narrow band of the electromagnetic spectrum using a single, fixed infrared detector (12) to cover a 360° area in a plurality of segmented sectors obtained by rotation of a mirror (19) for each of the sectors with detection of the radiation from each sector providing an indication of the presence of a physical phenomena (50) such as a forest fire. The use of a single fixed detector and the mirror rotation allows for a solar powered unit which is able to be employed either singularly or in a system of grid locations to cover a wide sensor area in order to provide continuous operation and reliable alarm indications.

Abstract: A presence sensing system provides one or more visible indicators useful for indicating a relative location of objects sensed within the scanning field of view. For example, the system may have an indicator array or an integrated display assembly in which individual indicators or indicator positions correspond to defined portions of the system's field of view. In this manner, the presence sensing system can indicate where one or more sensed objects lie within its field of view. The system may monitor or otherwise scan an angular field of view and may have an indicator array comprising a plurality of individual indicators, each one corresponding to a portion of the monitored area. With this configuration, the system selectively illuminates or otherwise activates those indicators in the array corresponding to the relative angles of detected objects within its field of view.

Abstract: 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 left stationary, it will hinder the subsequent operation of the system by masking part of the scene from the field of view of the array; this fault condition may be detected by the following procedure. At intervals arrangements are made to move the image of the scene to and from across the array using a suitable transducer and the outputs from the array are examined. The outputs from the array when the scene is in its normal condition and the image is moved across the array comprise a set of signals corresponding to a reference image, which may be compared with the corresponding outputs from the array when the image is moved across the array on a subsequent occasion.

Abstract: Apparatus for improving the sensitivity, angular resolution and range of motion detectors, occupancy sensors and similar systems include an improved infrared input section which employs at least one additional lens, possibly segmented, before a lens array. This pre-focusing lens collects and at least partially focuses incident infrared radiation onto at least one element of the lens array. The lens array focuses the radiation onto a detector.

Abstract: An improved detector assembly 10 having decreased sensitivity both to Narcissism and to stray light ghosting is disclosed herein. The improved detector assembly 10 of the present invention includes a housing 70 having an input aperture 142 in communication with a chamber within said housing. A detector 130 for sensing electromagnetic energy passing through the input aperture 142 within a first field of view is mounted within the chamber. Also mounted within the chamber is a detector mirror 100 for reflecting energy passing through the input aperture 142 within a second field of view outside of the first field of view. The improved assembly 10 of the present invention further includes a second mirror 110 mounted within the chamber for reflecting energy reflected by the first mirror 100 through the input aperture 142.

Abstract: An intrusion detector for detecting an intrusion into a protected space overlying a predetermined surface is provided. In one embodiment, the intrusion detector includes a housing to be mounted over the surface and including an infrared radiation sensor for sensing moving infrared radiation sources, and a transparent window thereover, a plurality of lens elements formed in the transparent window each oriented to receive infrared radiation from a moving infrared radiation source within a predetermined viewing zone of the protected space and to transmit infrared radiation from said source to the sensor; an alarm; and a control system for receiving the electrical output of the sensor and for outputting an alarm signal to the alarm when an infrared radiation source is detected simultaneously within at least two of the predetermined viewing zones.

Abstract: To correct the gray levels or pixel intensities of images provided by a digital infrared camera having a two-dimensional array of detector elements with non-sensitive areas therebetween, correction coefficients respectively allocated to the detector elements are stored in a memory of an image processing system. The gray levels of image pixels are corrected by the respective corresponding correction coefficients. The correction coefficients are progressively updated and improved by means of a dynamic correction process. To distinguish stationary features in a scene being viewed from non-uniformities among the detector elements so that such stationary features do not influence the updating of the correction coefficients, the image of the scene incident on the detector is moved relative to the detector, by means of a microscanner deflecting the image beam incident, on the detector.

Abstract: An infrared imaging device includes a board which is movable inside the infrared imaging device, plural kinds of magnification lenses, and plural kinds of infrared light radiation parts which radiate infrared lights having respective radiation temperatures, wherein the lenses and the infrared light radiation parts are situated on the board.