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  • Blog - Military & Law Enforcement Technologies
    Download Tube Substitution Useful Links CONTACT Blog 18 Jul 2002 Posted by Administrator in Blogs Gen IV Night Vision discontinued Due to issues regarding life longevity of Gen IV filmless Image Intensifier tubes 5 000 hrs life Gen IV is no longer produced due to not meeting the US government s requirements for long term use as compared with the current Gen III filmed tubes 10 000 hours Read More 9 Jul 2002 Posted by Administrator in Blogs Pyser SGI announce the release of an advanced version of the popular EV3 Image Enhancer Pyser SGI of the UK has announced the release of an advanced version of the popular EV3 Image Enhancer the EV9 Similar functionality and results of it s very popular predecessor the EV3 the next generation enhancer has 9 windows rather than 4 and is even more ideally suited for situations where there is low light smoke haze fog or rain It Read More 26 Jun 2002 Posted by Administrator in Blogs Pyser SGI of the UK release a portable day night thermal observation system Pyser SGI of the UK has released a portable day night thermal observation system The DANOS system provides the operative with a temporary or permanent perimeter surveillance system which when employed in a temporary configuration can be placed in various locations and linked via their proprietary Multi Sensor Modular System MSMS microwave apparatus Read More Showing 1 3 of 3 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 3 2010 1 2009 1 2008

    Original URL path: http://www.militaryandlaw.com.au/app/articles/articles?search_custom_start_date=2002 (2016-02-17)
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  • FAQ | Night Vision - Military & Law Enforcement Technologies
    sensitivity and clarity in extremely low light conditions Gen 3 units can see in nearly pitch black surroundings Gen 3 units see more in the near infrared spectrum than the visible light spectrum which makes the Gen 3 units more specially adapted to the extremely dark rural settings where the near infrared light from the night sky starlight can illuminate the landscape for viewing These are the current State of the Art The typical Gen 3 intensifier tube life is rated between 10 000 and 12 500 hours Image Intensifiers How They Work Part 1 Passive Night Vision Viewers have only a few components An Objective Lens collects minute amounts of ambient light that are undetectable to the naked eye and then directs that light into the Image Intensifier Tube tube for short The Intensifier Tube has a photo cathode which absorbs the light directed into it by the objective lens and converts the light energy photons into electric energy electrons Then the electrons are multiplied many thousands of times as they pass down the tube where the highly electrified electron image strikes a phosphor screen emitting light that is seen as a image An Ocular Lens then allows magnification focusing and viewing of the phosphor screen image with the eye A fourth component would be an IR infrared Illuminator used to illuminate objects in total absence of ambient light such as inner rooms caves or deep forests Image Intensifiers How They Work Part 2 An Image Intensifier is a vacuum tube that amplifies a low light level scene to observable levels The object lens collects light and focuses it onto the Image Intensifier At the photocathode of the Image Intensifier the incoming light is converted into photo electrons These photo electrons are accelerated in an electric field and multiplied by a Micro Channel Plate MCP An MCP is a very thin plate of conductive glass containing millions of small holes An electron entering a channel strikes the wall and creates additional electrons which in turn create more electrons secondary electrons again and again Subsequently the highly intensified photo electrons strike the phosphor screen and a bright image is emitted that you can see Visualisation of image intensifier with Micro Channel Plate Image Intensifiers What Are The Different Generations Generation I It started with electrostatically focused Generation I tubes featuring high image resolution a wide dynamic range and low noise Generation II introduced the Micro Channel Plate for much higher gain in the 1980 s The original image resolution was less than that of the first generation intensifiers but the gain was much higher up to 30000 fL fc Generation III In the late 1980 s an Image Intensifier with a GaAs photocathode was developed showing an enhanced sensitivity in the Near Infrared In the late 1990 s Gen III tubes with greatly improved performance appeared on the market These types are called Gen III Omni III and Gen III Omni IV or Gen IV Infrared What is it Infrared is an often confusing term The reference applies to electromagnetic waves of certain frequencies that are above the visible spectrum ie what we can see naturally Our eyes see only a small part of the overall radiation in our environment which ranges from Gamma Rays on the lower end of the spectrum to Radio Waves on the upper end The human eye spectral sensitivity extends only from about 0 4 um 4 micron to approximately 0 7 um The colour blue falls within the approximate range of 0 4 to 0 5 um the colour green falls between 0 5 to 6 um and red falls within 0 6 to 0 7 um Adjoining the red end of the visible spectral region is the Infrared which can be broken down into three overlapping categories Near IR from 7 to 1 3 um which is reflective Mid IR from 1 3 to 3 0 um which is reflective Thermal IR from 3 um to microwave which emits rather than reflects Of these three categories only Thermal IR is associated with the sensing emitting of heat which occurs at frequencies of 3 0 um and up Near IR and Mid IR are sensed as reflective rather than as emitting and these frequencies are found below 3 0 um down to the upper red regions of the visible spectrum 0 7 um Near IR energy reflective IR can be seen with certain CCD and CCTV cameras and Camcorders as the chips used in these cameras have some sensitivity to IR light in the Near IR spectrums Image Intensifier devices commonly known as night vision devices NVD s also are sensitive to the Near IR regions below 1 000nm 1 micron NVD s CCD CCTV cameras and camcorders all supplement their night time capability by adding IR lights These are diodes of various configurations that emit IR light in frequencies that the NVD or camera can see An IR light supplements ambient light in really dark conditions and enables photography or viewing in total absence of light Thermal IR emitted IR is heat energy emitted from objects at a frequency of 3 0 um and up This emitted energy is seen with a thermal imaging camera which will be tuned to sense thermal IR heat frequencies in the 3 0 to 5 0 um short wave or 7 0 to 14 0 um range long wave which are the two ranges with offer nearly 100 emission values All objects emit energy in these frequencies EXAMPLE A common hot plate when turned on will emit energy in the Thermal IR region as it heats but no Near or Mid IR light nor any visible light will be seen As the plate heats and the heating element gets hotter the plate will begin to emit Mid IR energy because as the plate heats the frequency of the energy released decreases So the hotter the plate gets it will start to glow red a lower frequency which

    Original URL path: http://www.militaryandlaw.com.au/faq.html (2016-02-17)
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  • Thermal Imaging Monoculars - Military & Law Enforcement Technologies
    RESOURCES Glossary of Terms How Night Vision works Night Vision Range Calculator Product Catalogue Download Tube Substitution Useful Links CONTACT Thermal Imaging Monoculars Sort by Default Latest Name A Z Name Z A PNP MTHDE Miniature Thermal Imaging Monocular with 32GB DVR Recording PNP MTHDE Miniature Thermal Imaging Monocularwith 32GB DVR Recording State of the art world beating product with 640 x 480 pixel array High Definition 17 micron pixel

    Original URL path: http://www.militaryandlaw.com.au/shop/category/thermal-imaging-monoculars (2016-02-17)
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  • 9323B for 2/3" ENG Broadcast Cameras | AstroScope - Military & Law Enforcement Technologies
    so they are easily viewed and recorded by the host camera The AstroScope is easy to use and requires no set up calibration or training The module maintains full electronic control of the lens iris and zoom and draws minimal power from the camera s rechargeable battery via the lens cable connection Overview The Night Vision Module provides professional broadcasts with the highest quality night time video images With the AstroScope mounted between the camera and the lens the module amplifies low light scenes so they are easily viewed and recorded by the host camera No batteries are required as the energy efficient AstroScope 9323 Night Vision Module draws minimal power from the camera s rechargeable battery vis the lens cable connection The heart of the 9323B Night Vision Module is the Gen III light amplifier an electro optical device with communication electronics that ensure proper interface between the camera and the lens This light amplifier transforms dark moonlit or starlit nights into bright high resolution scenes easily recorded by the camera s daylight sensor The AstroScope 9323B Night Vision Module extends the camera s usable light range without any drawbacks Electronic News Gathering Major networks around the globe have been capturing images under the most extreme conditions Imbedded news crews are required by their news directors to provide images day and night time The AstroScope professional night vision modules for ENG cameras is used by most networks in the world s hot spots to capture combat images Entertainment Program Production Night vision has supported the military and law enforcement communities for years Today night vision finds applications in US feature film and entertainment program productions delivering image quality that is required for broadcast production Special scenes can be created that delight and captivate audiences with spectacular low light imaging

    Original URL path: http://www.militaryandlaw.com.au/9323b_for_23_eng_broadcast_cameras.html (2016-02-17)
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  • Clip on Thermal Imagers - Military & Law Enforcement Technologies
    RESOURCES Glossary of Terms How Night Vision works Night Vision Range Calculator Product Catalogue Download Tube Substitution Useful Links CONTACT Clip on Thermal Imagers Sort by Default Latest Name A Z Name Z A COTI Small Clip On Thermal Imager COTI SMALL CLIP ON THERMAL IMAGER The COTI small clip on thermal imager provides a thermal overlay for NVD s NVG s Improve visibility in no low light situations including

    Original URL path: http://www.militaryandlaw.com.au/shop/category/clip-on-thermal-imagers (2016-02-17)
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  • IP Ratings | Night Vision - Military & Law Enforcement Technologies
    dust water and impact afforded by electrical equipment and enclosures Details of a third IP numeral are also shown this figure is used in corresponding international standards to indicate degrees of resistances to impact IP FIRST NUMBER Protection Against Solid Objects IP SECOND NUMBER Protection Against Liquids IP THIRD NUMBER Protection Against Mechanical Impacts 0 No Protection 0 No Protection 0 No Protection 1 Protected against solid objects over 50 mm eg accidental toach by hands 1 Protected against vertically falling drops of water 1 Impact 0 225 joule 2 Protected against solid objects over 12 mm eg fingers 2 Protected against direct sprays of water up to 15 from vertical 2 Impact 0 375 joule 3 Protected against solid objects over 2 5 mm tools wires 3 Protected against sprays to 60 from vertical 3 Impact 0 50 joule 4 Protected against solid objects over 1 mm tools wires small wires 4 Protected against water sprayed from all directions limited ingress permitted 5 Impact 2 00 joule 5 Protected against dust limited ingress no harmful deposit 5 Protected against low pressure jets of water from all directions limited ingress permitted 7 Impact 5 00 joule 6 Totally protected against

    Original URL path: http://www.militaryandlaw.com.au/ip_ratings.html (2016-02-17)
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  • NIM Night Intensification Module | Night Vision Intensification Modules - Military & Law Enforcement Technologies
    which is extremely sensitive to bright light The NIM simply requires the addition of an 1 auto iris lens to operate effectively Light intensifiers in general are normally operated only at night less than 0 01 lux conditions therefore the life of the NIM depends on the ability of the 1 auto iris lens to limit the light input on the faceplate of the light intensifier for both day and night conditions When used according to the operator s manual the NIM has a life of 1 to 3 years The NIM should not be used in the daytime NIM Night Intensification Module NIM Night Intensification Module on CCTV DOWNLOADS Datasheet APPLICATION NOTES Covert surveillance Law Enforcement Police Security Customs Defence 24 7 Observation SPECIFICATIONS Image Intensifier Tubes Choice of 7 Night Vision Image Intensification Tube options available XR5 non autogated XR5 autogated XR5 ONYX XD 4 SuperGen Gen II Plus Gen III see tube specifications for more information System compatibility Compatible with 1 2 1 3 1 4 1 cameras Compatible with all COT off the shelf objective lenses C mount 1 32 TPI Power 12v DC Magnification 1x Dimensions Size 73mm L 44mm dia Weight 216g INTERNATIONAL MOVEMENTS

    Original URL path: http://www.militaryandlaw.com.au/nim_night_intensification_module.html (2016-02-17)
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  • MNV K Night Vision Device | Night Vision Scopes - Military & Law Enforcement Technologies
    Photo Sensor auto shut off automatically shuts down the NVD when exposed to the excessive bright light over 40lx for 60 seconds or more thus protecting the Image Intensifier Tube IIT from catastrophic failure The auto gating option is designed to enhance the integrity of image resolution contrast wise that the operator observes in dynamic lighting conditions such as observing a vehicle with headlights on or entering an illuminated enclosure at night Without auto gating the user would only see an image saturated with light green colour similar to flaring or blooming an image without any detail With auto gating even under dynamic lighting conditions the perfect image The included as standard ABC Automatic Brightness Control ensures the observed image isn t over exposed Available with camera dSLR camcorder adaptors for low light image gathering Optional 3x 5x screw on 3x afocal snap on magnification lenses available Low battery indicator IR on indicator in viewfinder field of view Tube MTBF 10 000hrs The monocular is corrosion resistant ensuring long service life in the field Water immersion 0 5m for 30 minutes 10m for 1 hour upgrade available Operating mode switch and battery compartment cover are easy to use even when operating in gloves Corrosion proof and water proof construction ensuring long service fife in the field Can be used on either right or left eye Can be utilised with a head mountable hands free lightweight headmount MNV K Night Vision Scope DOWNLOADS MNV K datasheet download JSC Katod Corporate Katod info download 1 Katod info download 2 FEATURES AND SPECIFICATIONS High resolution high sensitivity Ultra compact design Optional safety photo sensor prevents accidental operation during daylight Low battery indicator in eyepiece IR illuminator on in eyepiece Available with 56 different image intensification night vision tube options Immersion 0 5m 30

    Original URL path: http://www.militaryandlaw.com.au/mnv_k_night_vision_device.html (2016-02-17)
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