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  • Pyser-SGI UK introduce the PNP-Mi & PNP-MCi Night Vision Devices. - Journal - Military & Law Enforcement Technologies
    Mi PNP MCi Night Vision Devices Both pieces of kit have the unique features of the PNP Night Vision Device range including C mount interchangeable lenses on the PNP MCi HOWEVER both units now incorporate the following unique beneficial ancillary features Unique to the industry incorporates a 75mW IR illuminator 4x more powerful than all other NVD s map reading illuminators The additional invisible 810nm IR illumination provides up to 20m of unseen to the naked eye luminosity a critical tactical advantage A red LED in the eyepiece illuminates when the IR illuminator is on as does a yellow LED when a low battery state occurs The unique in built safety photo sensor prevents accidental operation during daylight by terminating power to the Image Intensifier Tube which otherwise would typically irreparably damage the Tube This protection of course does not activate in darkness in the case of bright flashes vehicle headlights even at very short distances nor in street lighting or inside illuminated confines For further information please contact the author Rob MICHAEL Executive Director Military Law Enforcement Technologies on either 0411 244969 or robmblog militaryandlaw com au Welcome to our Blog The term government is intentionally generic and or

    Original URL path: http://www.militaryandlaw.com.au/blog/pyser-sgi-uk-introduce-the-pnp-mi--pnp-mci-night-vision-devices (2016-02-17)
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  • How Night Vision Works – series conclusion - Journal - Military & Law Enforcement Technologies
    The Sony Night Shot camcorder popularized this method Because of the IR sensitivity of the camcorder s CCD detector and since Sony installed an infrared light source on the camcorder infrared illumination was available to supliment otherwise low light video scenes produce reasonable image quality in low light situations The method of near infrared illumination has been used in a variety of night vision applications including perimeter protection where by integrating with video motion detection and intelligent scene analysis devices a reliable low light video security system can be developed IR Illumination HOW THEY WORK There are several different near infrared illumination devices are available today including Filtered incandescent lamps A standard high power lamp that is covered by an infrared filter designed to pass the lamp s near infrared radiation and block the visible light component These devices typically need good heat transfer properties since the intense visible light is internally absorbed and dissipated as heat LED type illuminators These illuminators utilize an array of standard infrared emitting LEDs Laser type The most efficient infrared illuminator these devices are based on an infrared laser diode that emits near infrared energy Near infrared illuminators are typically available in a range of wavelengths e g 730nm 830nm 920nm Providing supplemental infrared illumination of an appropriate wavelength not only eliminates the variability of available ambient light but also allows the observer to illuminate only specific areas of interest while eliminating shadows and enhancing image contrast The supplemental near infrared lighting not only improves the quality of image intensifier devices which have both a visible and a near infrared response but also permits the use of solid state cameras which also have the ability to convert near infrared images to visible For further information please contact the author Rob MICHAEL Executive Director Military

    Original URL path: http://www.militaryandlaw.com.au/blog/how-night-vision-works--series-conclusion (2016-02-17)
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  • How Night Vision Works – Part 4 - Journal - Military & Law Enforcement Technologies
    ambient light level independent In addition they also are able to penetrate obscurants such as smoke fog and haze There are two types of thermal imaging detectors cooled and uncooled Cooled detector infrared cameras require cryogenic cooling to very cold temperatures below 200K Uncooled detector infrared cameras are typically either temperature stabilized at room temperatures or entirely unstabilized Thermal images are normally black and white where black objects are cold and white objects are hot Some thermal cameras show images in colour This simulated colour is an excellent way to more effectively distinguish between objects at different temperatures Cooled detector Infrared Cameras HOW THEY WORK Cooled infrared detectors are typically housed in a vacuum sealed case cryogenically cooled The detector designs are similar to other more common imaging detectors and use semiconductor materials Differently it is the effect of absorbed infrared energy that causes changes to detector carrier concentrations which in turn affect the detector s electrical properties Cooling the detectors typically to temperatures below 110K a value much lower than the temperature of objects being detected greatly increases their sensitivity Without cooling the detectors would be flooded by their own self radiation Materials used for infrared detection include a wide range of narrow gap semiconductor devices where mercury cadmium telluride HgCdTe and indium antimonide InSb are the most common Uncooled detector Cameras HOW THEY WORK Unlike the cryogenically cooled detectors described above uncooled infrared detectors operate at or near room temperature rather than being cooled to extremely low temperatures by bulky and expensive cryogenic coolers When infrared radiation from night time scenes are focused onto uncooled detectors the heat absorbed causes changes to the electrical properties of the detector material These changes are then compared to baseline values and a thermal image is created Despite lower image quality than

    Original URL path: http://www.militaryandlaw.com.au/blog/how-night-vision-works--part-4 (2016-02-17)
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  • How Night Vision Works – Part 3 - Journal - Military & Law Enforcement Technologies
    Cameras HOW THEY WORK In order to overcome some of the disadvantages of image intensifiers CCD image detector manufacturers have improved the sensitivity of some CCD detectors by incorporating on chip multiplication gain technology to multiply photon generated charge above the detector s noise levels The multiplication gain takes place after photons are detected in the device s active area however before one of the detector s primary noise sources e g readout noise In a new multiplication register electrons are accelerated from pixel to pixel by applying high CCD clock voltages As a result secondary electrons are generated via an impact ionization process Gain can be controlled by varying the clock voltages Because the signal boost occurs before the charge reaches the on chip readout amplifier and gets added to the primary noise source the signal to noise ratio for this device is significantly improved over standard CCD cameras and yields low light imaging performance far superior than traditional CCD cameras However since the CCD temperature also affects the on chip gain multiplication lower temperatures yield higher gain and because other noise sources exist that occur before the multiplication i e dark noise it is prudent in these systems to temperature stabilize these detectors at temperatures about of below room temperature Another method for improving a CCD camera s sensitivity is to perform averaging to reduce noise either temporally where sequential video frames are averaged or spatially where neighboring pixels are binned or added together Part 4 coming soon For further information please contact the author Rob MICHAEL Executive Director Military Law Enforcement Technologies on either 0411 244969 or robmblog militaryandlaw com au Welcome to our Blog The term government is intentionally generic and or may refer to State and or Commonwealth Law Enforcement Defence or other agencies No

    Original URL path: http://www.militaryandlaw.com.au/blog/how-night-vision-works--part-3 (2016-02-17)
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  • How Night Vision Works – Part 2 - Journal - Military & Law Enforcement Technologies
    to maximise better vision An objective lens focuses the available ambient light photons onto the photocathode of the image intensifier The light energy causes electrons to be released from the cathode which are then accelerated by an electric field to increase their energy level speed These electrons enter holes in the microchannel plate bounce off the internal specially coated walls generating more electrons as the electrons bounce through This creates a denser cloud of electrons representing an intensified version of the original image HOW THEY WORK This method of night vision amplifies the available light to maximise the best low light vision An objective lens focuses available light photons on the photocathode of an image intensifier tube IIT The light energy creates electrons released from the cathode which are subsequently accelerated by an electric field to increase their speed energy level These electrons enter holes in the microchannel plate bounce off the internal specially coated walls which generate more electrons as the electrons bounce through This creates a denser cloud of electrons representing an intensified version of the original image The final stage of the image intensifier involves electrons striking a phosphor screen The energy of the electrons results in phosphor glow The visual light shows the desired view to the user or to an attached photographic camera or video device A green phosphor is used in these applications because the human eye can differentiate more shades of green than any other color allowing for greater differentiation of objects in the picture All image intensifiers operate in the above fashion Technological differences over the past 40 years have resulted in substantial improvements to the performance of these devices The different criterion s of technology have been commonly identified by distinct generations of image intensifiers Intensified camera systems usually incorporate an

    Original URL path: http://www.militaryandlaw.com.au/blog/how-night-vision-works--part-2 (2016-02-17)
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  • How Night Vision Works - Part 1 - Journal - Military & Law Enforcement Technologies
    2013 Posted by Administrator in Blogs How Night Vision Works Part 1 Night Vision as referenced here is that technology that provides the phenomenon of visual identification in total darkness and the improvement of general vision in low light conditions Night Vision Image Intensification technology is an culmination of several different methods each having their own advantages and disadvantages The most common methods as described below are Low Light Imaging Thermal Imaging and Near infrared Illumination The most common applications for Night Vision capabilities include but aren t limited to defence law enforcement night driving or flying night security and surveillance wildlife observation sleep lab monitoring and search rescue A wide range of Night Vision products are available to suit the various requirements that may exist for these applications Part 2 coming soon For further information please contact the author Rob MICHAEL Executive Director Military Law Enforcement Technologies on either 0411 244969 or robmblog militaryandlaw com au Welcome to our Blog The term government is intentionally generic and or may refer to State and or Commonwealth Law Enforcement Defence or other agencies No assumptions or references as to specifics should be assumed by the reader and aren t intended by

    Original URL path: http://www.militaryandlaw.com.au/blog/how-night-vision-works-part-1 (2016-02-17)
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  • Raymax Japan introduce the CATS 2000 IR Motorized Zoom Lens - Journal - Military & Law Enforcement Technologies
    Substitution Useful Links CONTACT Blog Raymax Japan introduce the CATS 2000 IR Motorized Zoom Lens 17 Apr 2013 Posted by Administrator in Blogs Raymax Japan introduce the CATS 2000 IR Motorized Zoom Lens Raymax Japan introduce the CATS 2000 IR Motorized Zoom Lens The CATS 2000 lens is truly unique in it amazing capabilities including but not limited to the capability to confirm a licence plate at 2km s BOTH DAY OR NIGHT the ability to locate a human vehicle target at 13km s BOTH DAY OR NIGHT during 24hrs operation does not require refocussing throughout the focal range no requirement to manually swap in out IR filters no longer having to operate tandem separate day night camera lens configurations For further information please contact the author Rob MICHAEL Executive Director Military Law Enforcement Technologies on either 0411 244969 or robmblog militaryandlaw com au Welcome to our Blog The term government is intentionally generic and or may refer to State and or Commonwealth Law Enforcement Defence or other agencies No assumptions or references as to specifics should be assumed by the reader and aren t intended by the author or authors Go Archives 2015 2 2014 12 2013 13 2012

    Original URL path: http://www.militaryandlaw.com.au/blog/raymax-japan-introduce-the-cats-2000-ir-motorized-zoom-lens (2016-02-17)
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  • Night Vision Rental Kit - Journal - Military & Law Enforcement Technologies
    Rental Kit At Military Law Enforcement Technologies we specialise in excess of 20 years in Night Vision rental of PNP Night Vision Devices for Camcorders dSLR s AstroScope 9323B Night Vision Modules for 2 3 B4 ENG broadcast cameras The AstroScope 9323B is state of the art not redundant discontinued or outdated technology ensuring you achieve the maximum low light imaging performance Image Intensification down to military grade 10 6 lux Image resolution to military grade 64lp mm Transparent use of Canon Fujinon B4 lenses Maintains electronic iris focus zooming facilities Powered directly from camera s battery Superior optics A rental flyer outlining our products costings is available at www militaryandlaw com au files rentals 2010s 9323b pnp combo night vision rental costings flyer pdf Our kit is utilised by all Australian media Australian Publicly Listed companies the Australian government For further information please contact the author Rob MICHAEL Executive Director Military Law Enforcement Technologies on either 0411 244969 or robmblog militaryandlaw com au Welcome to our Blog The term government is intentionally generic and or may refer to State and or Commonwealth Law Enforcement Defence or other agencies No assumptions or references as to specifics should be assumed by

    Original URL path: http://www.militaryandlaw.com.au/blog/night-vision-rental-kit (2016-02-17)
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