Using infrared laser to aim, won’t you expose your position?
Military fans and friends can often see in the film and television works that the counter-terrorism force broke through the window under the condition of poor lighting, and with the assistance of the red dot laser sight, the terrorist was shot to death. It seems that the "laser pointer" is an effective auxiliary aiming device, which can be used for auxiliary aiming under the smoke line and poor lighting conditions. So, doesn't the laser reveal where you are?
In fact, tactical equipment such as laser pointers is often hung on the leather track to assist in aiming. Take the LAM system of the American MK23 special pistol as an example, green laser sight for pistol are also divided into types! There are roughly two types: visible and invisible to the naked eye. After covering an infrared filter in front of the halogen lamp of the laser pointer, infrared light that is invisible to the naked eye can be filtered out. So how can it be used if it is not visible to the naked eye? Don't worry, the light spots can be clearly seen under passive night vision equipment. If this infrared filter is removed, the emitted infrared laser will be visible to the naked eye.
The red dot sight is also called a reflective sight. Its main device is a beam splitter with a flat front and a concave back and a rear light source. After the light reflected by the target passes through the beam splitter, the human eye sees the target image. . At the same time, the light emitted by the flashlight red laser sight Combo behind the beam splitter will enter the human eye through the reflection of the concave beam splitter. Since the light reflected by the concave mirror is parallel, the human eye can always see this light source (red Point), just as it is a principle that we can see the sun no matter how we move.
This point is always parallel to the barrel, so you only need to overlap this point with the target to achieve roughly aiming when shooting. Because the bullet trajectory is curved, there is a deviation in actual use. The red dot sight does not radiate light outwards, so there is no light spot on the target, and no light at the muzzle, so it can't talk about exposing the target.
The actual position that will be exposed is actually called a laser sight. The principle of this thing is very simple. It is to install a red laser sight pistol light whose optical axis is consistent with the central axis of the gun after correction, and install it on a suitable part of the gun through a bracket, and use the laser when using it. The target can be irradiated to quickly aim and shoot, and the scene of random laser shooting often appears in the movie.
However, most high-end laser sights now also recognize the shortcoming of exposure position. Many laser pointers have begun to use infrared lasers that are invisible to the human eye. Infrared rays are completely invisible with the naked eye, so this thing is generally used with infrared nights. If the enemy is not wearing night vision equipment, it is invisible.
