Optical connector ferrule and optical connector

2:

• The optical connector ferrule according to claim 1, wherein the inner wall further includes a second surface connecting the outer surface and the first surface, and an angle formed by the outer surface and the first surface is smaller than an angle formed by the outer surface and the second surface.

3:

• The optical connector ferrule according to claim 1, wherein the first surface is in parallel with the outer surface.

4:

• The optical connector ferrule according to claim 1, wherein the first surface is inclined with respect to the outer surface.

5:

• The optical connector ferrule according to claim 4, wherein an inclination angle of the first surface with respect to the outer surface is in a range of more than 0 degree and equal to or less than 45 degrees.

6:

• The optical connector ferrule according to claim 1, wherein a total area of the first surface is equal to or more than 20% of a total area of the first opening.

7:

• The optical connector ferrule according to claim 6, wherein the total area of the first surface is equal to or more than 50% of the total area of the first opening.

8:

• The optical connector ferrule according to claim 1,
• wherein the first surface includes a third surface and a fourth surface, and
• wherein the third surface is positioned closer to the center of the window with respect to the fourth surface and is positioned closer to the introducing hole in the second direction with respect to the fourth surface.

9:

• The optical connector ferrule according to claim 1,
• wherein the first surface includes a third surface and a fourth surface, and
• wherein the third surface is positioned closer to the center of the window with respect to the fourth surface and is positioned closer to the outer surface in the second direction with respect to the fourth surface.

10:

• The optical connector ferrule according to claim 1, further comprising:
• a step provided to the outer surface, the step protruding outwardly in the second direction from the outer surface closer to the first end with respect to the step.

11:

• The optical connector ferrule according to claim 10,
• wherein the window is separated from the step toward the first end in the first direction, and
• wherein the first surface is provided to, except for one portion, the other portions in the peripheral direction of the inner wall, the one portion being closer to the step than the other portions.

12:

• The optical connector ferrule according to claim 1, wherein the window has a rectangular shape, a polygonal shape, a circular shape, an elliptical shape or a partially rounded shape.

14:

• The optical connector according to claim 13, wherein the adhesive remains inside the window, not on the outer surface, in the second direction.