Recommended
More Related Content
What's hot
What's hot (20)
Similar to Night vision technology presentation
Similar to Night vision technology presentation (20)
Recently uploaded
Recently uploaded (20)
Night vision technology presentation
- 1. Night Vision Technology Shree Shambhubhai V. Patel College Of Computer Science And Business Management Guided By: Prof. Binal Naik Submitted by: Brinda Chanchad Tybca sem-6 Seat no:1702 adsadassad
- 2. Content History Applications Introduction Advantages Types of night vision Disadvantages Working of technical night vision Future scope Night vision devices Conclusion Generations References 07 08 09 10 11 12 01 02 03 05 04 06 2
- 3. Figure :- Night vision technology 3
- 4. History • Today’s night vision technology has developed so much but it is hard to believe that it originates from the second world war.[1] • Nvd were first used in world war II, and came into wide use during the Vietnam war. Each succession of newer Nvd are called ‘generations’ with performance increasing and prices decreasing at each interval.[1] • Historically armies did not fight at night because of the confusion, lack of visibility, and increased difficulty with communication. Only the most highly trained soldiers with a well- rehearsed plan could take to the battlefield at night with any chance of success.[1] 4
- 5. Introduction Develop for military use. Humans have poor night vision compare to animals.[2] With the use of proper night vision technology, you can see a person standing over 183 m away on a moonless, cloudy night. [2] Allows to see in the dark It depends on technology that you have used. Night vision can work in two different ways. 5
- 6. Types of night vision Biological night vision • Rods of the eye undergo a change in shape as light. • Human rods is insensitive to the light. Technical night vision • Image intensifier • Thermal imaging 6 Figure :- biological night vision Figure :- Technical night vision
- 7. Technical night vision can work in two very different ways Image intensifier Night vision amplifies light to achieve better vision. A conventional lens, captures ambient light. The gathered light is sent to the image-intensifier tube. The light energy released electron from the cathode and accelerated. Working of technical night vision 7
- 8. These electrons enter micro channel plate and bounce off and generate more electron. Thousands of other electrons to be released in each channel. Original electrons collide with the channel, exciting atoms and causing other electrons. New electrons collide with other atoms, creating a chain. Contd… 8
- 9. Contd… In image-intensifier tube, the electrons hit a screen. The energy of the electrons release photons and create green image on the screen. The green phosphor image is viewed through another lens. 9 Figure :- image intensifier process
- 10. 10 • All objects emit infrared energy as a function of their temperature. • A lens focuses the infrared light. • The focused light is scanned and create temperature pattern. • The pattern created is translated into electric impulses. Thermal imaging
- 11. Contd… • The impulses are sent to a circuit board that translates the information into data for the display. • The signal-processing unit sends the information to the is play, and appears as various colors. • Thermal images are black and white in nature. 11
- 12. 12 Figure -Thermal imaging process
- 13. Night vision devices Night vision devices are basically divided into three categories Scopes [4] They are monocular normally Handheld or mounted on a weapon. Goggles[4] They are binocular and Worn on the head. Cameras [4] Used for transmission or recording of images mostly if the location is fixed. 13 Figure :- night vision devices
- 14. parameter Generation 1 Generation 2 Generation 3 Development year 1960’s 1970’s 1990’s Technology: Vacuum Tube Micro channel Plate Improved Micro channel Plate and photo cathode Operation : Full Moon Operation One Quarter Moon Operation Starlight Operation Light Amplification: 1,000 20,000 40,000 Operating Life: 2,000 Hours 2,500 Hours 10,000 Hour Table :-night vision technology generations[3] Generation of night vision device 14
- 15. Applications[4] Military Entertainment Hunting Automobile Wildlife observation Security Hidden-object detection 15
- 16. • No particular skill required • Accidents cases reduction • Compact system • High sensitivity in law light[5] • High speed imaging capability[5] • Able to detect people and vehicles at great distance[5] Advantages 16 Disadvantages • The only disadvantage is that the initial cost too high.
- 17. • Future nvg are being designed not just to see at night but also to allow to soldiers to share images of what they see with the other soldiers who may be miles away. [5] • Scientists are experimenting with panoramic night vision goggles which double the user’s field of view to around 95 degrees by using four 16mm images intensifiers tube, rather than the more standard two 18mm tubes and lets hope that more and more advancements will be made in the field of night vision technologies. [5] Future scope 17
- 18. Conclusion • Many people are beginning to discover the unique world that can be found after darkness falls. • The application within the scientific or the civilian range is often prohibited by law. • It is essential to combat terrorism which is a major problem being faced by mankind. 18
- 20. THANK YOU 20