DEPARTMENT OF ELECTRICAL ENGINEERING
Mr. Hemant Amahiya Sir,
V th SEM, EE
• “ Can you 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.
The first night vision devices (NVD) were
• Pre 1940’s: Flares and spot lights were used for
operations at night.
• Functioned by placing an infrared filter over a
A tank fromWorld
War II equipped
with a search light
used for night
The screen was
green due to the
scientific fact that the
human eye can
shades of green that
any other color
• The starlight scopes of the 1960’s have
three image intensifier tubes connected in a
During this time period the first “Generation”
of NVD began using intensified natural
The power of Generation 1 NVD was put to
the test in theVietnamWar.
These thermal imagers 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.
The currently generations 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.
Here is a 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
Development of NVD 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.
There are many practical everyday uses for NVD,
some of which are:
In conclusion I believe that is wonderful how
something originally designed for
destruction, can now help people on an
This is truly amazing technology.
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