| 摘要 |
The invention refers to optical instrument making and is designed for application on small arms, in particular, for aiming from-behind obstacles. The optical sight has been offered, which contains thin-wall cylindrical body, where collimating lens and first protective window are located on the optical axis, as well as block of mirrors, fastened in the face end of the body with the possibility of rotation by 360° relatively to the optical axis, including a stationary mirror and a rotary mirror placed with the possibility of fixation in two discrete positions, point source of light located on the side inner surface of the body and optically connected with the collimating lens, units of elevation and azimuth adjustment, block of power supply, including electronic control PCB, battery and multi-position switch, located on the outer surface of the body. Novelty of the offer is that the block of mirrors is located on the inner cylindrical surface of the body in front of the first protective window, at the same time the stationary mirror is located parallel to the face end of the body and displaced relatively to the optical axis by the value which exceeds the length of radius of the body's cylinder, and the rotary mirror is fastened on the hinge in the console way and is equipped with the lever that ensures fixation of the rotary mirror parallel to the optical axis or with the angle of/&pgr; to it. At the same time the sight is equipped with the second protective window located after the stationary mirror so that normal to it forms the angle of 45° with the optical axis of the sight. In order to ensure hermiticity of the design of the sight the block of mirrors is connected with the body of the sight via stair-step bush tightly installed into the cylindrical part of the external surface of block of mirrors and focused on it via threaded ring, and the outer side surface of the bush has smaller diameter and is connected with the inner surface of the body via threaded connection. In order to improve hermeticity of the sight between the block of mirror and the bush a rubber tightening ring is set into the groove located on the cylindrical part of the surface of block of mirrors. The offered technical solution ensures firm location of all the optical elements of the sight which ensures their mechanical durability to shocks during shots (including burst fire), at the same time hermeticity of the design of the sight is provided which enables precise shooting in wide temperature range and in any air condition (presence of moisture, smoke and dust). The sight can be used in standard mode as well as for shooting from-behind closed positions. |
