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night vision
Night vision devices were first created during World War II to help with night operations. They functioned by placing infrared filters over searchlights. Since then, technology has advanced through generations. Generation 1 used intensified natural light while Generation 2 added microchannel plate electron multipliers in the 1970s. Currently, Generation 3 and 4 devices provide clearer, longer lasting images but Generation 4 has shorter life. Night vision devices were originally for military use but are now commonly used for civilian applications such as law enforcement, hunting, security, and navigation.
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night vision
- 1. DEPARTMENT OF ELECTRICALENGINEERING Submitted to Mr. Hemant Amahiya Sir, Lecturer DEPTT.OF ELECTRICAL ENGINEERING JEC,JABALPUR Submitted By SUBHASH DHAKAR (0201EE071056) V th SEM, EE YEAR:2009
- 2. • “ Canyou see in dark?” • The answer is most definitely yes. with the proper night -vision equipment,you can see a person standing over 200 yards (183 m) away on a moonless, cloudy night. • Ability to see in dark night.
- 4. The firstnight vision devices (NVD) were created duringWWII. • Pre 1940’s: Flares and spot lights were used for operations at night. • Functioned by placing an infrared filter over a searchlight.
- 5. A tankfromWorld War II equipped with a search light used for night combat.
- 6. • Thermal imaging •Image enhancement
- 9. The screenwas purposefully colored green due to the scientific fact that the human eye can differentiate more shades of green that any other color
- 10. • The starlightscopes of the 1960’s have three image intensifier tubes connected in a series. During this time period the first “Generation” of NVD began using intensified natural lighting. The power of Generation 1 NVD was put to the test in theVietnamWar.
- 12. The micro channelplate (MCP) electron multiplier prompted Generation 2 development in the 1970’s.
- 13. These thermalimagers were expensive, so in 1973 scientists created a common module that made it less expensive, and more ideal for military use. The generation 2 NVD were first put to the test by US forces in the early 1990’s during Operation Desert Storm in Kuwait.
- 14. The currentlygenerations of NVS are generations 3 and 4. Generation 3 is much like generation 2 except for it has a substantially longer life, as well as more defined images. Generation 4 has less noise than generation 3, however it has shorter life.
- 15. Here isa chart comparing the life in hours of the intensification tube for generations 1-3 Generation 1 Generation 2 Generation 3 2,000 hours 2,500- 4,000 hours 10,000 hours
- 16. Development ofNVD up until the 1980’s was completely focused around military purposes. • In the 80’s, companies in the US and Europe took NVT and found ways to improve everyday civilian life.
- 17. There aremany practical everyday uses for NVD, some of which are: Law Enforcement Hunting Wildlife observation
- 18. Security Navigation Hidden-Object detection Entertainment
- 19. In conclusionI believe that is wonderful how something originally designed for destruction, can now help people on an every-day basis. This is truly amazing technology.