Optical connector ferrule, optical connector, and production method for optical connector

An optical connector ferrule comprising:

• a front end portion including a front end surface and a side surface that is connected to the front end surface and extends in a direction intersecting the front end surface;
• and
• a flange portion connected to the front end portion on an opposite side of the front end surface in the front end portion, and protrudes from the front end portion in a direction along the front end surface,
• wherein the front end portion includes at least one optical fiber hole opened in the front end surface and extending in an intersecting direction intersecting the front end surface, a window opened in the side surface, and an internal space communicating with the at least one optical fiber hole and the window,
• the front end portion includes an edge defining the window, and
• a shortest distance between a connection position where the flange portion and the front end portion are connected to each other and a portion which is closest to the front end surface in the edge is less than or equal to ⅖ of a shortest distance between the connection position and the front end surface.