What are Night Vision Telescopes? Can night vision binoculars really see far and clearly at night?

A night vision telescope is an instrument that can observe in total darkness or in a low-light environment. I like that the Explorer Telescope Shimmer series of telescopes can collect more light than any other telescope, and try to avoid any scattered light. More light means clearer observation, especially in low light and at night.

The essential difference and identity of history and literature is an age-old topic, and Aristotle wrote in Poetics: "The difference between the two is that one narrates what has happened and the other describes what could have happened." Therefore, the activity of writing poetry is more philosophical and serious than writing history; Because the things described in the poem are universal, the history is about the individual.

17] The main body of the writing of "Romance of the Three Kingdoms" obviously does not have a sense of distinction between history and literature, so the text does not present the concept of difference between history and literature, and all the story elements and discourse expressions of history and literature are confused and entangled. It is precisely the limitations of aesthetic conceptions derived from an innate nature that are smeared as a hybrid text that is neither historical nor in accordance with the general prescriptiveness of literature. On the other hand, the identity of history and literature is related in a philosophical sense, and they both should and necessarily express the objective laws of history and its contingent structure, in other words, both history and literature must imply historical reason and dialectical logic together.

Night vision. It is two completely different optical instruments from telescopes, and "night vision telescopes" are names made up by some merchants who deliberately confuse the concept.

Night vision device (see figure below) Huaixiao is an optical instrument specially used for night observation, it works in the near-infrared band, and is equipped with infrared sensitive CCD and magnification processing circuits and liquid crystal display.

etc., put infrared light invisible to the human eye.

Imaging is converted to visible light.

Image, magnified by eyepiece and viewed. This kind of night vision device is usually attached to an infrared illuminator to enhance the night vision effect. There are also thermal imaging cameras that operate in the far infrared band.

It directly collects (rather than reflected) infrared rays emitted by the target for imaging, does not rely on any illumination at all, and is much more concealed than the former.

Regardless of the type of night vision device, it must be powered to work. It itself has some optional magnifications, generally magnification, but also 4 6x varieties, which is similar to a telescope, but it cannot be used during the day and is completely different from a telescope.

It is worth mentioning that the imaging clarity of the night vision device is limited by the number of pixels of its built-in ** processor, which will be much lower than that of ordinary optical telescopes. To say that it has "clear images" is probably only relative to the fact that the human eye has basically no vision at night under the condition of no light.

The telescope (see the figure below) is a long-range observation tool that everyone is familiar with, its function is only to indiscriminately magnify the distant scene, the large-aperture low-magnification telescope has some (several times) enhancement effect on the surface brightness of the target, but compared with the night vision device, it is not worth mentioning the target brightness enhancement effect of hundreds, thousands or even hundreds of thousands of times.

The telescope does not require a power source.

The so-called "night vision telescopes" are basically the false propaganda of ordinary telescopes by merchants, and they take advantage of the mystery of the general consumer's incomprehension of the principle of optical instruments to make up these names that seem to be lead-based rather than lead. Of course, this is limited to some unscrupulous merchants, and manufacturers and distributors of big-brand optical instruments will not use this method.

Micro night vision, the only explanation is "low-light night vision", a military technology, has a limited understanding of military affairs, so it is not ugly.

But for the telescope, this function is purely imaginary, the telescope does have a stronger ability to gather light, but the width of the mouth section of a few tens of millimeters is not much more than the naked eye's solitary light ability, and it is extremely inconvenient to use. A brief introduction to night vision devices in military science classes.

It seems that this can only be done through the amplification of electronic signals, and there is no doubt that the popular telescope combustion stop has no such function.

In short, those merchants hype this concept, and I must stay away. If you say it well, it is called ignorance and brightness, and if you say it badly, it is called a pit person. In the face of profit, all capital is an abomination.

Thermal imagers are the latest night vision telescopes.

Thermal imagers also became passive night vision telescopes, which also required batteries. The principle of thermal imager imaging is based on the temperature difference of the target, so it has nothing to do with the light of the target. This means that the thermal imager can be used both during the day and at night.

In terms of night vision function, thermal imagers are less affected by environmental factors than infrared night vision devices.

Thermal imagers are digital, and the resolution and lens directly affect the observation distance, and the observation distance of the general thermal imager is 200-1000 meters.

Advantages and disadvantages of thermal imager: Thermal imager, compared with infrared night vision device, has a farther observation distance and is not affected by the brightness of the target. However, in the daytime, although it can be used, it is certainly not as far as a normal telescope.

This means that this telescope can also see targets at night.