Patent ID: 8714839
Filing Date: 2014-05-06
Classification: G02B,H01R,H04B,H05K

Abstract:
1. A receptacle cage used in a receptacle assembly to be mounted on a wiring board in a housing of a communication system, comprising: a module accommodating portion made of a metal and configured to detachably accommodate an optical module, the module accommodating portion having a module slot provided at one end to allow passage of the optical module, and a bottom wall portion coming in contact with a lower surface of the optical module; a connector accommodating portion made of a metal, the connector accommodating portion communicating with the module accommodating portion and accommodating a connector to which the optical module is connected; a first shield member made of a metal, the first shield member provided on an entire periphery of the module slot and configured to come into contact with an outer peripheral surface of the optical module and to shield electromagnetic noise generated in the module accommodating portion so as to avoid radiation of the noise into the housing; a second shield member made of a metal, the second shield member provided at an upper portion of the connector accommodating portion in a region corresponding to a boundary portion between the connector accommodating portion and the module accommodating portion, and configured to come into contact with an upper surface of the optical module and to shield the electromagnetic noise generated in the connector accommodating portion; and third shield members made of a metal, the third shield members provided in regions corresponding to the boundary portion between the connector accommodating portion and the module accommodating portion, the regions being different from a region where the second shield member is provided, the third shield members configured to come into contact with side surfaces of the optical module and to shield the electromagnetic noise generated in the connector accommodating portion.