night vision technology

NIGHT VISION TECHNOLOGY

BYA.HAREESH REDDY08Q61A0561IV CSE

Overview:

• INTRODUCTION•NIGHT VISION WORKING•BASIC TECHNOLOGIES•INFRARED ILUMINATORS•GENERATIONS•APPLICATIONS•CONCLUSION•REFERENCES

INTRODUCTION

• Night Vision scopes and binoculars are electro-optical devices that intensify (or amplify) existing light instead of relying on a light source of their own.

• Night vision googles capture the image even in the dark in the infrared region.

HISTORY:

At first, sniper riffles had night vision technology incorporated for the ability to see enemies from a distance - this proved to have a dramatic effect in the course of the war. Since the Germans found the usefulness of night vision, they began developing new technology to successfully dominate the night.

How Night Vision Works

Infrared Light:

Basic Technologies Night vision work in two very different ways, depending on the technology used

Image enhancement Thermal imaging

THERMAL IMAGING:

It is quite easy to see everything during the day

Thermal imaging lets you see again

Thermal Imaging Devices:

•Un-cooled

•Cryogenically cooled

The basic components of a thermal-imaging system

INFRA-RED ILUMINATORS

Working of Image Enhancement:

Thermal Imaging Process:

NIGHT VISION DEVICE: A NVD is a optical instrument that allows images to be produced in levels of light approching total darkness.

Night vision devices were first used in world war IIAnd came into wide use during the Vietnam war. Night vision device is also termed as Night Optical Device(NOD).

Generations of NVD:

Generation 0Generation 1 Generation 2 Generation 3Generation 4

Night Vision Equipment :

Scopes Goggles Cameras

Applications:

Military Law enforcement Hunting Wildlife observation Surveillance Security Navigation Hidden-object detection Entertainment

Night Vision System for Cars:

CONCLUSION

REFERENCES:

http://medind.nic.in/iab/t06/i1/iabt06i1p11.pdfhttp://blogs.ibibo.com/eminem/Night-Vision-Technology.htmlhttp://electronics.howstuffworks.com/nightvision5.htm

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