How do night vision goggles/binoculars work?
Right, so just curious how they work and why they are so damn expensive.
Night vision goggles just amplify the light your looking at and allow you to see lower levels of light that the human eye cannot normally see. But they do require light to work, so if you were to look through them in complete darkness you still wouldn’t be able to see but even just moonlight is more then enough for them to work..
Then there’s thermal imaging which allows you to see heat signatures, Since these pick up heat not light they can work in total darkness but it can be difficult to see certain things with low heat from a distance.
They are so expensive because they are highly advanced technologies and anything optical related is going to be expensive because they require a lot of workmanship, even a pair of glasses can cost hundreds of dollars. Plus they are made almost exclusively for law enforcement and military operations they have to be very durable and made from high quality materials.
Night Owl 5.0x NexGen Night Vision Binoculars with 50mm Lens
January 13th, 2010 at 7:00 am
IR light comes out, reflects on objects, and then gets picked up by expensive IR cameras and displays it on a LCD screen. Thats why its expensive. You can make one very cheap. Just youtube up kipkay he will teach you
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January 13th, 2010 at 7:28 am
Technology costs money.
NV goggles take natural light and amplify it.
Infra red uses a different part of the light spectrum, and you need to have IR light source to illuminate the subject. IR is invisible to the naked eye.
Police helicopters use FLIR ( Forward looking infa red ) to see heat sources, such as a cars hot brakes or engine. A person in a field will stand out, due to their body heat signature.
Jim B. Toronto.
References :
January 13th, 2010 at 7:42 am
Night vision goggles just amplify the light your looking at and allow you to see lower levels of light that the human eye cannot normally see. But they do require light to work, so if you were to look through them in complete darkness you still wouldn’t be able to see but even just moonlight is more then enough for them to work..
Then there’s thermal imaging which allows you to see heat signatures, Since these pick up heat not light they can work in total darkness but it can be difficult to see certain things with low heat from a distance.
They are so expensive because they are highly advanced technologies and anything optical related is going to be expensive because they require a lot of workmanship, even a pair of glasses can cost hundreds of dollars. Plus they are made almost exclusively for law enforcement and military operations they have to be very durable and made from high quality materials.
References :