A very simple and easy to understand ppt

1. CHARTERED INSTITUTE OF TECHNOLOGY,
ABUROAD
A presentation on
‘‘Night Vision Technology’’
Presented By
Kamini Prajapati
EC 8th semester

2. Introduction
Principle
Types of Night Vision
Night Vision Devices
Drawbacks
Applications
Conclusion

3. Night Vision technology
allows one to see in the dark,
even in moonless cloudy
night.

4. Night vision technology’s principle is based on the
amplification of existing low light.
In this technique first light is converted into the
electron by image intensifier tube .
Then these electrons are amplified and after that,
they are converted again into the visible light.

5. There are two types of Night Vision :
Biological Night Vision
Technical Night Vision
•Image Intensifier
•Thermal Imaging

6. The image intensifier is a vacuum-tube based
device that converts invisible light from an image
to visible light so that a object in the dark can be
viewed by a camera or the naked eye.

7. Fig : Image intensification system

8. This technology operates by capturing the upper
portion of infrared light which is emitted as heat
by objects instead of simply reflected as light.

9. Fig : Thermal imaging system

10. They are basically divided into three categories :-
SCOPES GOGGLES CAMERAS

11. The main drawback of Night Vision technology is that,
it can not detect the colour of object.
Lenses are very expensive.

12. Military
Wildlife observation
Security
Hidden object detection

13. By using Night Vision technology a soldier and wild life
observer can work efficiently during night and also
shown how surveillance can be kept in low light
condition but the application within the scientific or the
civilian range is often prohibited by law.