Do you dream to see a cat in the dark and remain invisible to others? Realize such a desire will help night vision goggles. This device is used in various fields, for example:
- for all kinds of search operations;
- for the professional activities of security guards, police, military and drivers, who often have to repair equipment on the roads in complete darkness;
- for those who like taking pictures or filming wildlife at night.
Night vision goggles are needed for hunting, fishing and hiking. Having put them on, you can quickly collect firewood in the dark to make a fire, freely pass through the thicket and not get lost in it, do not trip over the root of the tree and do not fall into the hole. And these are only the main useful qualities of this device. This can include a huge variety of other nuances.
Night vision goggles can be bought at the store, however, they are very expensive. An alternative solution is to make them yourself at home. Try to restore your knowledge of chemistry and physics, and then it will be easier for you to understand how to make night vision goggles on your own. Find literature, read information, get ready.
Step-by-step instruction
Take 2 glass plates and immerse them in a solution of
potassium dichromate and sulfuric acid (for about 4 hours). Then dry the glasses and fix them above the porcelain cup at a height of at least 10 cm (you must put tin chloride in the container). Now place all this in a
muffle furnace. Put the metal plate on the cup first.
Preheat the oven to a temperature of at least 470 degrees Celsius. Quickly remove the plate. Now closely monitor the changes that occur with the glasses. They will gradually begin to become covered with the thinnest current-conducting film.
Turning off the stove, let the glass cool. Put on the side of the glass, where there is no conductive film, varnish and lower the glass into a solution of thiacarbomide and lead acetate. Then pour the alkali concentrate here, gently stirring the resulting liquid. After 15 minutes, carefully remove the glass from the cup.
Put the same cup in the oven, but now pour the silver solution into it. Place the glass over it.
Preheat the oven to 900 degrees. A mirror film should gradually appear on the plate.
To obtain a colorless crystalline powder, mix copper and ZnS (10: 100) in a cup and heat the mixture in an oven.
Take the “Zapon” varnish (for binding) and mix with the powder. Now drip this mixture onto the plate and let the drop spread. Make sure that the coating is even. Connect the two plates, squeezing slightly, dry them, and at the end of the process, check the sealing of the resulting device. Night vision goggles are ready.
Do not forget to assemble the high voltage generator circuit!
Now it remains to connect everything. Take the lens for the device from the camera, and for the eyepiece - a biconvex lens.
After checking all the connections, you can start the connection. That everything works fine, you will understand by the characteristic squeak of the transformer.
For a clearer image, it is necessary to change the frequency of the generator and the voltage levels several times.
If you succeed, then you will not have to spend a lot of money on night vision goggles by buying them in a store.