| 摘要 |
FIELD: military equipment.SUBSTANCE: invention relates to military equipment and can be used for protection of lens optical device of foreign objects. Protective jacket optical device comprises cover installed with possibility of rotation, manual drive, gear with self-braking gear, case closed plate with a hole along perimeter of which there is a sealing gasket, and collar. Inside housing cover plate with hole is arranged additionally along perimeter of which there is a base of thin-wall conical corrugated cuff with height exceeding distance to top plate. Upper end surface of corrugated collar rests against second cuff is made in form of hollow cone with central bore. At joint of additional plate and body housing at angle there are through holes. Holes in top and additional plates are made to optical instrument body inclination up to 7°. Inner surface of body of case and cover are coated with heat-insulating material.EFFECT: higher tightness of lens optical device and standard operator from environment due to optimisation of structural solutions, use of heat-insulating materials.2 cl, 3 dwg |
