Night vision devices use image intensification or thermal imaging to produce images in low-light conditions. Image intensification amplifies existing light using a photocathode and microchannel plate to produce an image, while thermal imaging detects infrared radiation emitted or reflected from objects. There are multiple generations of night vision devices with improvements in resolution, gain, and range. Night vision technology has military, law enforcement, hunting, and other applications for seeing in darkness.

1. BY
A.HAREESH REDDY
08Q61A0561
IV CSE

2. Overview:
• INTRODUCTION
•NIGHT VISION WORKING
•BASIC TECHNOLOGIES
•INFRARED ILUMINATORS
•GENERATIONS
•APPLICATIONS
•CONCLUSION
•REFERENCES

3. 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.

4. 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.

5. How Night Vision Works
Infrared Light:

6. Basic Technologies
Night vision work in two very different ways, depending
on the technology used
Image enhancement
Thermal imaging

7. THERMAL IMAGING:
It is quite easy to see
everything during the
day
Thermal imaging lets you
see again

8. Thermal Imaging Devices:
•Un-cooled
•Cryogenically cooled

9. The basic components of a thermal-imaging system

10. INFRA-RED ILUMINATORS

11. Working of Image Enhancement:

12. Thermal Imaging Process:

13. 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 II
And came into wide use during the Vietnam war.
Night vision device is also termed as Night Optical
Device(NOD).

14. Generations of NVD:
 Generation 0
 Generation 1
 Generation 2
 Generation 3
 Generation 4

15. Night Vision Equipment :
 Scopes
 Goggles
 Cameras

16. Applications:
 Military
 Law enforcement
 Hunting
 Wildlife observation
 Surveillance
 Security
 Navigation
 Hidden-object detection
 Entertainment

17. Night Vision System for Cars:

18. CONCLUSION

19. REFERENCES:
http://medind.nic.in/iab/t06/i1/iabt06i1p11.pdf
http://blogs.ibibo.com/eminem/Night-Vision-Technology.html
http://electronics.howstuffworks.com/nightvision5.htm

21. THANK U