What are the features and applications of infrared night vision devices?
A viewfinder infrared night vision device is an electronic device that uses photoelectric conversion technology. Strictly speaking, viewing infrared night vision device is not a telescope, it is a kind of electronic equipment using batteries. It is an electronic device that uses batteries. It is divided into two types, active and passive, the active type can emit a beam of infrared light, which will be reflected back to the object, equivalent to a torch; the passive type is to amplify the infrared light emitted by the object itself into visible light.
This instrument is a compact and beautiful monocular observation handheld night vision device. Its optical system and imaging bright high-performance generation plus micro light tube will bring you is a clear, sharp observation effect. Viewing type infrared night vision device using advanced integrated production process, compact size, weight only 405g, and then long time use is also easy to handle.
The instrument has a wide range of applications and is suitable for night patrol and reconnaissance by security guards. Whether you are travelling, camping, field observation, or to protect their property from theft, the viewing type infrared night vision device can effectively provide you with help and cooperation. It is the ideal equipment for both military and civilian use, which enhances your work efficiency and adds fun to your life.
There are many types, but basically consists of optical system, variable image tube or micro phototube, power supply and power supply system and so on. Of course, the active infrared night vision device should also be equipped with infrared searchlight, which varistor or microtube is the "heart" of the night vision device. Variable image tube can be invisible infrared image into a visible image, microlight tube can be a weak light to enhance tens of thousands of times or even hundreds of thousands of times, so that the human eye can be perceived.
Observation type infrared night vision device is afraid of strong light, because of the variable image tube and micro light tube is afraid of strong light. Variable image tube, for example, when the infrared light irradiated to the variable image tube photocathode, photocathode emission of electrons, electrons in the high-pressure field (16 ~ 21 kV) and the role of electronic lenses, accelerated to the fluorescent screen, so that the screen displays a visible image of the target. Transducer receive more light signals, the emission of electrons is more, the fluorescent screen emits a strong light signal, see the image is also bright.
They are basically proportional. However, if the external light is too strong, the photocathode emits more electrons to a certain extent does not increase, that is, saturation occurs, it will not see the target. If too strong light suddenly shot over, may also make the tube photoelectric cathode burned out, and can not emit electrons, of course, can not see anything.
Although the viewing type infrared night vision device to take certain measures to prevent glare, but its role is limited, so the use of must be strictly in accordance with the provisions of the operation. When encountering bright light or daytime target calibration, the objective lens cover to put on or turn off the power switch. Correct use of the observation type infrared night vision device, can extend the observation type infrared night vision device its service life and avoid unnecessary damage, so as to give full play to the role of the observation type infrared night vision device.
