UNCLASSIFIEDUNCLASSIFIEDThis Presentation is Classified:UNCLASSIFIED
UNCLASSIFIEDUNCLASSIFIEDPurpose•The purpose of this presentation is to expand the enlisted aircrew’s knowledge of Night Vision Devices (NVD), Night Vision Goggles (NVG), human factors, as well as the night environment.
UNCLASSIFIEDUNCLASSIFIEDLearning Objectives•Describe the characteristics of the AN/AVS-9R Night Vision Goggles•Describe the AN/AVS-9R power source •State the authorized methods and devices for focusing NVGs•Demonstrate proper focusing procedures
UNCLASSIFIEDUNCLASSIFIEDLearning Objectives•Describe the differences in NVG performance during high light level (HLL) and low light level (LLL) operations•Describe the effects of clouds, snow, rain, fog, and dust on the NVGs•Discuss the crew coordination considerations during NVG operations•Discuss weapon procedures while operating with NVGs
UNCLASSIFIEDUNCLASSIFIEDReference•MAWTS-1 Night Vision Device (NVD) Manual 10thEdition
UNCLASSIFIEDUNCLASSIFIEDOutline•NVG History and Characteristics•Night Environment•Human Factors•Weapons Considerations•Summary
UNCLASSIFIEDUNCLASSIFIEDNight Vision History•Ways to overcome darkness–Searchlights•These were traceable and pin pointed friendly locations–Near infrared searchlights and viewer•Needed a device with no traceable signature
UNCLASSIFIEDUNCLASSIFIEDGeneration II I² Technology•Development of the Microchannel Plate–Reduced distance between I² components–Proximity focus•Little or no distortion–Still blooming•No saturation•NVG image “halo”•Service life degradation–Gen I; 10,000 hours–Gen II; 4,000 hoursObjectiveLensPhotocathodeMicro ChannelPlatePhosphor ScreenEyepieceLensLight and NearInfrared Energy- Electrons +Light
UNCLASSIFIEDUNCLASSIFIEDGEN II Image
UNCLASSIFIEDUNCLASSIFIEDThat’s the History. Now how it works
UNCLASSIFIEDUNCLASSIFIEDI² Tube•Takes available light from the night sky, both visible and invisible to the naked eye and amplifies it to allow the user to see through the eyepiece–Photocathode–Microchannel Plate–Phosphor ScreenPhotocathodeMicro Channel PlatePhosphor Screen
UNCLASSIFIEDUNCLASSIFIEDPhotocathode•Photon to electron converter–Near IR energy into electrical energy•Processed or “grown” by vaporizing in a vacuum chamber–Very delicate process affecting gain and sensitivity of I² tube
UNCLASSIFIEDUNCLASSIFIEDMicrochannel Plate (MCP)•Electron multiplier–Very thin (1mm) wafer–> 6 million glass tubes tilted at approx 5 deg.