| 主权项 |
1. A ferrule comprising:
a ferrule main body having a front edge, a rear edge, a top surface and a lower surface; a fiber insertion hole, extending into the ferrule main body from the rear edge of the ferrule main body; a first recess provided in the top surface of the ferrule main body, the first recess comprising a reflection surface which is a rear surface of the first recess, wherein the reflection surface reflects light on an optical path between the fiber insertion hole and a light emission-launch portion; the light emission-launch portion provided in the lower surface of the ferrule main body; a locating pin extending outward from the lower surface of the ferrule main body and disposed between the light emission launch portion and the front edge of the ferrule main body; and a second recess provided in the lower surface of the ferrule main body and disposed between the light emission-launch portion and the locating pin, wherein A is a distance from an axis line of the locating pin to the front edge of the ferrule main body, B is a distance from the axis line of the locating pin to a front surface of the second recess, and 0.7≦A/B≦1.3; and T is a height of the ferrule from the top surface of the ferrule main body to the lower surface of the ferrule main body, C is a depth of the second recess from the lower surface of the ferrule main body to a topmost portion of the second recess, and C≧0.4T. |
