This document discusses night vision technology and its applications. It begins by explaining how night vision works using either image intensification or thermal imaging. Image intensification amplifies existing light using a cathode tube to generate more electrons and create a visible image. Thermal imaging detects infrared radiation emitted by all objects and translates it into a visible thermal image. Common night vision devices include scopes, goggles, and cameras. The document outlines applications for night vision in military, security, hunting, and wildlife observation due to its advantages of low cost and small size while enabling vision in dark environments. In conclusion, night vision has advanced significantly since its early military development and has become essential for combating terrorism.
Night vision is technology that provides users with some vision in total darkness and improved vision in low-light environments.
The most common applications include night driving or flying, night security and surveillance, wildlife observation, sleep lab monitoring and search and rescue. Night vision is often used by the military and also has recreational purposes, like use on home video cameras or during night hiking.
The word ‘Night vision’ itself means the ability to see in low light conditions. Humans have poor night vision compared to many other animals.So we all might have a question in our mind that is this really possible to see in the dark night
Night vision is technology that provides users with some vision in total darkness and improved vision in low-light environments.
The most common applications include night driving or flying, night security and surveillance, wildlife observation, sleep lab monitoring and search and rescue. Night vision is often used by the military and also has recreational purposes, like use on home video cameras or during night hiking.
The word ‘Night vision’ itself means the ability to see in low light conditions. Humans have poor night vision compared to many other animals.So we all might have a question in our mind that is this really possible to see in the dark night
Seminar on night vision technology pptdeepakmarndi
ppt of night vission technology. this is made under the guidance of teacher. withe this report also given in theis side. main things report is given according to the ppt...........
Night vision technology, by definition, literally allows one to see in the dark. Originally
developed for military use, it has provided the United States with a strategic military
advantage, the value of which can be measured in lives. Federal and state agencies now
routinely utilize the technology for site security, surveillance as well as search and
rescue. Night vision equipment has evolved from bulky optical instruments in lightweight
goggles through the advancement of image intensification technology.
Seminar on night vision technology pptdeepakmarndi
ppt of night vission technology. this is made under the guidance of teacher. withe this report also given in theis side. main things report is given according to the ppt...........
Night vision technology, by definition, literally allows one to see in the dark. Originally
developed for military use, it has provided the United States with a strategic military
advantage, the value of which can be measured in lives. Federal and state agencies now
routinely utilize the technology for site security, surveillance as well as search and
rescue. Night vision equipment has evolved from bulky optical instruments in lightweight
goggles through the advancement of image intensification technology.
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3. INTRODUCTION
Night vision technology, literally allows one to see in the dark.
It is originally developed for military use .
Humans have poor night vision compared to many other
animals.
With the proper night-vision equipment, we can see a person
standing over 200 yards (183 m) away on a moonless, cloudy
night.
4. WORKING OF TECHNICAL
NIGHT VISION
Technical Night Vision
Image intensifier
Thermal imaging
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.
5. 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.
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.
7. Thermal Imaging
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
The impulses are sent to a circuit board that translates the
information into data for the display.
8. The signal-processing unit sends the information to the is play, and appears
as various colors.
Thermal images are black and white in nature.
Thermal imaging process
9. This information is obtained from several thousand points in the field of
view of the detector array.
The thermogram created by the detector elements is translated into electric
impulses.
The impulses are sent to a signal-processing unit, a circuit board with a
dedicated chip that translates the information from the elements into data for
the display.
The signal-processing unit sends the information to the display, where it
appears as various colors depending on the intensity of the infrared
emission.
10. The combination of all the impulses from all of the elements
creates the image.
Day time night time
by using thermal image
11. NIGHT VISION DEVICES
Night vision devices are basically divided into three categories
SCOPES
They are monocular normally
handheld or mounted on a weapon.
GOGGLES
They are binocular and
worn on the head.
CAMERAS
Used for transmission or recording
of images mostly if the location is fixed.
Fig3:- Night vision
devices
13. ADVANTAGES
• The biggest advantage is it Just having the ability to see in the dark.
• The main advantages of image intensifiers as night vision devices are
their small size, light weight, low power requirements and low cost.
14. CONCLUSION
Today in the 21st century we have come a long way in the development of
night vision technology, from the early 1940’s.
Night vision devices are basically designed for utmost defensive purposes but
the application within the scientific or the civilian range is often prohibited
by law.
In present scenario the applications of night vision technology is very
essential to combat terrorism which is a major problem being faced by
mankind.