Although the basic principles of military telescopes are no different from ordinary civilian telescopes, there are many differences due to the different use environment and different observation objects.
First of all, their optical systems are different. Most military telescopes have reticles, and their reticles used at night are also illuminated by lights. The exit pupil of military telescopes is relatively large, and the brake aimer wears a gas mask. In order to prevent hitting the head when shooting, some scopes have a pupil distance as large as 70 or 80 millimeters, and an eye mask and a forehead guard with moderate hardness must be prepared.
In terms of optical performance and structural performance, military telescopes are better and more reliable, because they are more carefully designed, use superior materials, and sophisticated craftsmanship, such as good image quality, less stray light, and matching magnification to the size of the entrance pupil. Achieve the best resolution. The outer shell of military telescope is made of metal instead of plastic to ensure that it will not crack or deform after long-term use. In contrast, ordinary civilian telescopes are worse in terms of sealing and materials. Some are only plastic shells, and even the internal lenses are made of plastic.
Due to the high quality requirements, military telescopes must undergo environmental tests before they leave the factory, which generally include vibration tests, high temperature (ten 55°C) tests, low temperature (45°C) tests, rain or water immersion tests, and air tightness tests. , The product performance can still guarantee the ability to leave the factory within the specified range. Some products also come with a dryer inside the lens body. The air is taken out and filled with dry air or nitrogen before leaving the factory to effectively prevent the internal lens from growing moldy and fogging in the future. Telescopes generally do not do environmental tests, or only part of them. This is difficult for people to understand from the market, nor can it be seen from the appearance of the product.
Because of these differences, the design and manufacture of military telescopes have to pay much higher costs, so their scale is also higher than that of ordinary civilian telescopes.
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