Patent ID: 6481902
Filing Date: 2002-11-19
Classification: G02B

Abstract:
A light transmission device comprising an optical fiber cable having a plug and a holder having a plug insertion hole into which the plug of the optical fiber cable is inserted, the holder containing an optical element exposed in the plug insertion hole for performing at least either emitting or receiving light so that the plug inserted in the plug insertion hole is optically coupled with the optical element, whereinan engaging projection is provided on an outer surface of the plug, an engaging groove corresponding with the projection is provided on a wall of the plug insertion hole, and a shutter for closing the plug insertion hole is provided, the shutter being opened and closed in the inside of the plug insertion hole by turning about a pivot extending substantially vertically or parallel to a line composed of an optional point in the groove and a point on a wall of the plug insertion hole rightly opposite to the optional point.