Patent ID: 11927815
Assignee: ENPLAS CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An optical receptacle that is integrally molded and configured to optically couple a photoelectric conversion element and an optical transmission member when the optical receptacle is disposed between a photoelectric conversion element package including the photoelectric conversion element and the optical transmission member, the optical receptacle comprising:
a first optical surface configured to allow, to enter the optical receptacle, light emitted from the photoelectric conversion element package, or configured to emit, toward the photoelectric conversion element package, light travelled inside the optical receptacle;
a second optical surface configured to emit, toward the optical transmission member, the light travelled inside the optical receptacle, or configured to allow, to enter the optical receptacle, light emitted from the optical transmission member; and
a second cylindrical part disposed to surround a second central axis of the second optical surface at a position further from the first optical surface than the second optical surface,
wherein the second cylindrical part includes:
a first inner surface with a circular shape in a cross section perpendicular to the second central axis,
a second inner surface disposed closer to the second optical surface than the first inner surface and configured to hold the optical transmission member at a position facing the second optical surface, the second inner surface having a circular shape in the cross section perpendicular to the second central axis, and
a third inner surface disposed closer to the second optical surface than the second inner surface,

wherein a diameter of the first inner surface is greater than a diameter of the second inner surface, and
wherein a length of the second inner surface in a direction along the second central axis is 0.5 to 4.0 mm.