FIBRE OPTIC JUNCTION Russian patent published in 2013 - IPC G02B6/36 

FIELD: construction.

SUBSTANCE: device comprises a metal body installed tightly in the wall and made as composite of two parts attached by the thread with a through hole for optic fibre fixed in a metal holder installed tightly on the body. The fibre holder is made in the form of two cylindrical bushings pressed to the body at the side of fibre inlet and outlet with the help of nuts and having diametrical grooves with sealing rings on the seating surface. Optic fibre is metallised and tightly fixed in the axial hole of each bushing with glue. In one of the bushings the fibre is additionally fixed with the help of a plastic metal solder. On the seating surface of both parts of the body placed with formation of an inner cavity between them, there are grooves made for installation of sealing rings in them. The place of parts joint is fixed from outside with a captive nut.

EFFECT: increased operational reliability, tightness and shock resistance.

3 cl, 2 dwg