OPTICAL-MECHANICAL DEVICE FOR PROTECTION OF INPUT ELEMENT OF OPTICAL SYSTEM Russian patent published in 2020 - IPC B60R1/00 B60S1/56 G02B27/00 

FIELD: optical-mechanical systems.

SUBSTANCE: invention relates to optical-mechanical systems with protective devices. It can be used, in particular, in observation instruments and for optical sensors, for example, on vehicles, in military science. Optical-mechanical protection device of the input element of the optical system comprises screen (4) which is movable on guides (3) with an opening (S) in front of input element (1) of optical system (2). Screen (4) has a plurality of optically transparent windows (5) or sections (5) with the possibility of selective installation thereof with complete coverage of optical system (2) visibility zone and protection of input element (1) against contamination and damage under the effect of the external environment. There is also a screen heating device. One of windows (5) or, respectively, one of sections (5) of screen (4) is substituted (replaced) through hole (6). In particular, screen (4) is made in the form of rotary disc (4) on the roller from the drive. At that, disc (4) can be made with star-shaped metal base enclosing optically transparent windows (5) or sections (5) and having heat-conducting connection with roller (7), which is also metal and connected, in its turn, with heat source (Q), for example drive (8) of disc (4).

EFFECT: use of the invention improves technical and operational characteristics of the protective device.

7 cl, 4 dwg