Patent ID: 6547450
Filing Date: 2003-04-15
Classification: G02B

Abstract:
A dust cap for an optical plug having a ferrule, said dust cap comprising a box-like housing having front and back ends and side walls that define a cavity, said housing including: (i) an opening at the back end that is shaped to receive the optical plug, (ii) a retaining feature for interlocking with a mating feature on the optical plug and holding the optical plug within the cavity, and (iii) a tubular member that is positioned within the cavity at the front end of the housing, said tubular member having a longitudinal axis that is parallel to the direction of insertion of the plug into the housing, said tubular member having a distal end that is closed and a proximal end with an opening that is shaped to receive the ferrule; wherein the distance between the proximal end of the tubular member and the back end of the dust cap, as measured along the longitudinal axis, is greater than three (3) millimeters.