Scopes may be something that may be unfamiliar to us, but in fact, although some things are banned in our country, sights belong to the category of optical instruments and telescopes and therefore belong to a toy that can be collected and played.
On the whole, the sight is divided into white light telescopic sight, its principle is similar to ordinary telescopes but the main direction is deviated, the telescope generally pays attention to air tightness and imaging level, aiming at the above points More attention to the internal division version of the seismic properties, the structure is relatively more complex, most of the front and rear lenses are the same objective lens, the eyepiece is small. There is a mediation turret in the middle section, which controls the alignment to move up and down, left and right. Telescopic white light sights are divided into three subcategories.
1, Zoom conventional sight is the following figure conventional, generally used for long-distance use, the magnification is generally higher than 9 times 3-9*42 4-16*44 and other multiples are generally high, and generally with focus operation is relatively complex, involving parallax adjustment zero operation, front and rear zoom error problems, more explained later!
2, Speed sight is used for medium and close range rapid aiming at the target (chicken eating eightfold lens is this), its appearance characteristics eyepiece is small and the objective lens is relatively large, the field of view is wide and there is no focus knob called focus-free optical system, and the general magnification is common within 10 times
3, Fixed magnification: it is almost the same as the conventional sight but missing a zoom ring, the advantage of fixed magnification is stability, do not involve complicated other operations, need a little adaptation.
After the white light telescopic type, there are also portable sights used at short distances, generally called refractive diffraction type which represents the red dot sight and the holographic sight
1, Red dot (the easiest to see in the game), simple and reliable A two-point one-line lens coating allows the emitted laser beam to be displayed on the coating To achieve the purpose of aiming, up and down left and right adjustment is also present.
2, Holographic sight
There is also a similar to digital products, night vision and computer fusion into the scope, generally called digital night vision sight is divided into infrared active night vision goggles, low-light night vision goggles, and infrared thermal imaging night vision goggles.