Explanation and analysis of the structure of the sight
Eyepiece: the side near the eye.
Objective lens: that is to see the side of the object.
Mirror tube: this should not be explained.
Dividing board: mainly divided into glass dividing board and wire dividing board
Division: common divided into ordinary cross division, close division, circle center division（ Others include: five line division, circle center close point division, tactical compound division, hunting close position division, inverted tower division, close line division, diamond division, etc.)
Foreign customers generally use cross division, which is simple and does not block the target. For close division, it is usually used by professional snipers. Compared with cross division, close division can not only estimate distance, but also increase multiple reference points of shooting.
Lens: divided into different levels, a +, a -, B +, B -, C +, C - (to better times)
Lens coating: divided into red film, blue film, green film, green broadband coating
The differences of different films are as follows
Red film: imaging slightly blue, cold color, snow, the best choice under the sun.
Blue film: imaging slightly yellow, more common use.
Green film: the image is slightly red, which is easy to be confused with green broadband coating.
Trajectory adjustment button
That is to adjust the height and left and right of the trajectory.
The two aiming knobs control the height of the trajectory respectively. If up is written on it, the direction of the arrow indicates that the trajectory is upward, while the opposite direction indicates downward. On the side, l is left. The direction of the arrow indicates that the trajectory should be adjusted to the left. On the contrary, it should be adjusted to the right. The principle is to adjust the left and right first, then up and down.
Each sound is adjusted to a click value, which is 1 / 4 of an inch at 100 yards.
Where 1 / 4 inch = 0.635 cm
The calculation formula is as follows:
Click value should be adjusted several times = 100 * deviation (CM) / target distance (m) / 0.635
(please pay attention to the mark on the trajectory adjustment button. There are also some sights with click values of 1 / 2, 1 / 8. That is, at 100 yards, the trajectory moves 1 / 2 inch and 1 / 8 inch respectively. Same method)
Figure of 1 / 8 trajectory adjustment button:
Zoom ring: change the focal length by adjusting the multiple.
Low power sight: (such as 1-4x24, 1.5-6x32, 2-7x36)
Medium power sight: (such as: 3-9x40, 2. 8-10X40，3.5-10X40，4-12X40）
High power sight: (such as: 6-18x40, 6-20x50, 5.5-25x44)
In addition, opinions on the use of multiple of sight for different distances are as follows:
5-30m - 4 times or less
30-60m - 6x
60-100m - 8-10x
100-200m - 10-12x
Over 200 - 16-20 times
Double light adjustment knob:
On the battery stand, there are such numbers as 0, 1, 2, 3, 4, 5, etc. generally, 0 means to turn off the power, that is, to work normally without light. Other numbers indicate the intensity of the light, of which 1 is the lowest and 5 the strongest（ Red number means red light, green number means green light)
Side focus knob:
For built-in trajectory adjustment, a fine-tuning knob for reducing parallax. It is marked with 10, 15, 20, 30,..., 100, 200, 300, 500, infinite (in yards, 1 yard is 0.9 meters) and other numbers. When you shoot at different distances, you can adjust to the corresponding distance to reduce the parallax to the minimum. The generation of the micro disparity is a common problem of the optical sight due to the defect of the optical path. In a certain range of range, there is no need to pay too much attention to close range shooting.
Objective adjustment button:
For external trajectory adjustment, a fine adjustment knob for reducing parallax. The usage is the same as that of the side focusing. Compared with the side focusing, the objective lens focusing is a simple fine adjustment knob, which has low cost and no water and fog resistance.
Diopter adjustment button:
Generally, a better sight will have a diopter adjusting button, which is located at the eyepiece and can be rotated out. Because the shooter's vision varies from person to person, the optical path of the eyepiece group can be changed through the diopter adjustment circle of the eyepiece group to match the user's vision. |
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