Renfro Power Point Presentation Assignment[1]

8/8/2019 Renfro Power Point Presentation Assignment[1]

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Development through Military History into Modern Daily Use.

By: Johanna Renfro


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Night vision technology has shaped history. Pre 1940s: Flares and spot lights were used

for operations at night.


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Due to the nature of these early night visiondevices (NVD), they gave away tactical

positions. Military scientists began to think of ways to

improve night vision to gain a strategicadvantage.


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The first night vision devices (NVD) werecreated during WWII.

Functioned by placing an infrared filter over asearchlight.

Fighters would use special binoculars to seeusing the light from the searchlights.

Many problems came from this night visionmethod.


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NVD FUN POP

QUIZ!

Why do NVD

devices alwaysshow images inhues of green?

A) The original designers of NVDhad an obsession with the color.

B)The actualfirst inventors of

NVD were little green aliens.

C) NVD use green because itallows for more definedimages.


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C

The screen was purposefully colored

green due to the scientific fact that the

human eye can differentiate more

shades of green that any other color.


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There were many disadvantages to using the

searchlights and flares. The actual searchlight was massive and had

to be mounted on a truck or tank. Both the Allies and Nazis had this

technology, so they each could see the otherslight.


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The images created were streaky anddistorted.

The acceleration of electrons cut the life ofthe image intensification tube, which was themost important and expensive part of theNVD, very short.

Military scientists began planning a reviseddesign.


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Post WWII NVD technology focused on the

ability to see without creating additionallight. During this time period the first Generation

of NVD began using intensified naturallighting.


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Military scientists created a two-stagecascade image tube.

This tube intensified the natural lighting andcreated a superior image for the viewer. The power of Generation 1 NVD was put to

the test in the Vietnam War.


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A Star-Tron Scopes was the common name

given to the NVD in Vietnam. There were still many problems military

scientists wanted to work on.


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Star Tron Scopes intensification tubes were asheavy as the rifles they were mounted on.

They were not sensitive enough to give clearimages in anything less than full moonlight. The NVD emitted a whiney noise. They would shut down if they were exposed

to a sudden burst of bright light.


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There were two major developments in NVDtechnology after their test in Vietnam.

The first was a new micro-channel plate(MPC) that was light weight, and moreeffective at focusing light into clear images.

The second major development was theinvention of thermal imagining.


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Thermal imaging allowed for NV eventhrough low natural lighted conditions.

It also allowed for NV through smoky, dusty,and foggy conditions. These thermal imagers were expensive, so in

1973 scientists created a common modulethat made it less expensive, and more idealfor military use.


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The generation 2 NVD were first put to the

test by US forces in the early 1990s duringOperation Desert Storm in Kuwait. The dark nights and harsh dusty conditions

were perfect for implementing the newtechnology.


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The currently generations of NVS aregenerations 3 and 4.

Generation 3 is much like generation 2 exceptfor it has a substantially longer life, as well asmore defined images.

Generation 4 has less noise than generation3, however it has shorter life.


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Here is a chart comparing the life in hours ofthe intensification tube for generations 1-3

Generation 1 Generation 2 Generation 3

2,000 hours 2,500- 4,000 hours 10,000 hours


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LAST NVD FUN POPQUIZ!

Which of the 4Generations of

NVD is thecurrent model

used by the

U.S. Military?

A)Generation 1

B) Generation 2

C) Generation 3

D) Generation 4


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Development of NVD up until the 1980s was

completely focused around military purposes. In the 80s, companies in the US and Europe

took NVT and found ways to improveeveryday civilian life.


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There are many practical everyday uses forNVD, some of which are:

Law Enforcement

Hunting

Surveillance


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Security

Navigation

Hidden-Object detection

Entertainment


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Unknown author, Night Vision Devices. BookRags.11/12/2008

Unknown author, Night Vision Goggles.GlobalSecurity. 11/10/2008

Unknown author, How Night Vision Works. HowStuff Works. 11/11/2008
http://www.bookrags.com/research/night-vision-devices-woi/http://www.globalsecurity.org/space/systems/images/night_vision.gifhttp://www.electronics.howstuffworks.com/nightvision5.htmhttp://www.electronics.howstuffworks.com/nightvision5.htmhttp://www.globalsecurity.org/space/systems/images/night_vision.gifhttp://www.bookrags.com/research/night-vision-devices-woi/

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Renfro Power Point Presentation Assignment[1]