An assembly for accessing a body cavity having an illuminated proximal end. The assembly includes a housing defining a longitudinal axis and having a longitudinal opening therethrough for receiving a surgical object, an illumination source disposed adjacent a proximal end of the housing and a sensor mechanism disposed along the longitudinal opening and operably connected to the illumination source. The sensor mechanism is configured to detect the presence of a surgical object within the longitudinal opening and deactivate the illumination source when a surgical object is present in the longitudinal opening.
