Which is better, infrared night vision or low-light night vision?

Infrared night vision devices and low-light-level night vision devices are actually misunderstood by everyone. In the market, low-light-level night vision devices are also called infrared low-light night vision devices, which are also called infrared night vision devices. The name is very easy to misunderstand consumption, and it also leads to many laymen and friends who don’t understand lead to misinformation.

Infrared night vision by formal statement would only be divided into " active infrared night vision " and " passive infrared night vision ," " active infrared night vision " is what we commonly known as the " night vision " , as well as with IR Function, that is, night vision device that emits infrared rays. At present, almost all active infrared night vision devices in the world have low light level and IR functions, including the first generation of night vision devices also have these functions, there is no only advanced night vision The instrument has two functions: infrared and low light.

" Passive infrared night vision device " is what we commonly call " infrared thermal imager " . The actual formal name is infrared night vision device, but now this kind of name is blended with low light night vision device and called night vision device, so we call this passive infrared night vision device called infrared thermal imager, also It's a thermal imager.

First. The difference between infrared night vision device and low light level night vision device:

The difference between the two night vision devices is that the active type is to illuminate the object through the IR of the night vision device itself , and then reflect the infrared light to the objective lens of the night vision device, or illuminate the object through the starlight in nature, and then reflect it to the object. The objective lens, through the image intensifier tube in the night vision device to see the image. The passive night vision device uses the infrared radiation emitted by the object itself to image. The key to the two is that one is reflected by the object, and the other is spontaneously emitted by the object.

Second. The difference between low-light night vision and infrared thermal imaging camera observation.

The field of view of the low light level night vision device is round, and the field of view of the thermal imager is square.