Patent ID: 11921331
Assignee: ENPLAS CORPORATION
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An optical receptacle configured to be disposed between a light emitting element and an optical transmission member and configured to optically couple the light emitting element and the optical transmission member, the optical receptacle comprising:
a first optical surface configured to allow an incidence of light emitted from the light emitting element;
a second optical surface configured to emit, toward the optical transmission member, light emitted from the light emitting element and advanced inside the optical receptacle;
a diffraction surface disposed on the first optical surface, on the second optical surface, or on a light path between the first optical surface and the second optical surface, and
wherein the diffraction surface is configured such that no zero-order diffraction light is generated, and configured to focus only a primary diffraction light toward an end portion of the optical transmission member.