US 12,105,329 B2
Optical connector
Takahiro Inaba, Yokohama (JP); Yoshikyo Tamekuni, Yokohama (JP); and Mitsumasa Seita, Komaki (JP)
Assigned to SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD., Yokohama (JP)
Filed by SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD., Yokohama (JP)
Filed on Sep. 20, 2022, as Appl. No. 17/949,020.
Claims priority of application No. 2021-166166 (JP), filed on Oct. 8, 2021.
Prior Publication US 2023/0115918 A1, Apr. 13, 2023
Int. Cl. G02B 6/38 (2006.01)
CPC G02B 6/3869 (2013.01) 8 Claims
OG exemplary drawing
 
1. An optical connector which has a front end and a rear end located opposite the front end in a first direction, and into which an optical fiber is insertable from the rear end, the connector comprising:
a ferrule including a flange portion having a regular hexagonal prism shape, and holding the optical fiber at the front end; and
a front housing having a through-hole into which the flange portion is inserted, and accommodating the ferrule,
wherein the through-hole includes a first hole portion and a second hole portion that is continuous from the first hole portion,
the second hole portion is located between the first hole portion and the rear end in the first direction,
a shape of a cross section of the first hole portion perpendicular to the first direction is a regular hexagonal shape,
the first hole portion has a first end close to the front end of the optical connector, and a second end close to the rear end of the optical connector,
the first hole portion is continuously reduced in diameter from the second end toward the first end,
a longest diagonal line at the first end of the first hole portion is shorter than a longest diagonal line of the flange portion,
a longest diagonal line at the second end of the first hole portion is longer than the longest diagonal line of the flange portion,
a distance between opposite sides at the second end of the first hole portion is shorter than the longest diagonal line of the flange portion,
the second hole portion has a third end close to the front end, and a fourth end close to the rear end,
a shape of a cross section of the third end of the second hole portion perpendicular to the first direction is same as a shape of a cross section of the second end of the first hole portion perpendicular to the first direction,
in a cross section of the fourth end of the second hole portion perpendicular to the first direction, six contours corresponding respectively to six sides of the third end of the second hole portion bulge outward or inward,
a minimum diameter of the fourth end of the second hole portion is longer than the longest diagonal line of the flange portion, and
the second hole portion is continuously reduced in diameter from the fourth end toward the third end.