| 摘要 |
A surface (17d′) facing a photoelectric conversion apparatus is formed on the optical block (3) side, said surface having light from a light emitting element (10) inputted thereto and monitor light outputted therefrom, and a coupling light output surface (12) having coupling light outputted therefrom is formed on the optical housing (4) side, and consequently, the surface (17d′) and the coupling light output surface (12) are simply and highly accurately formed. Then, an optical block (3) and an optical housing (4) are simply and accurately combined by being fitted together by means of fitting sections (21, 24). Adhesion of foreign materials and formation of scratches on the reflecting surface (18) of the optical block (3) are suppressed by covering the reflecting surface (18) with the optical housing (4). |
| 主权项 |
1. An optical receptacle that optically couples a light emitting element and an optical transmission member together when the optical receptacle is disposed between a photoelectric conversion device and the optical transmission member, the photoelectric conversion device including the light emitting element and a light-receiving element that receives monitoring light for monitoring light output from the light emitting element, the optical receptacle comprising:
an optical block which is light-transmissive and is disposed to face the photoelectric conversion device; an optical housing which is light-transmissive and houses the optical block therein, the optical housing including an opening that opens to the photoelectric conversion device side such that the optical block is exposed on the photoelectric conversion device side; and a filler which is light-transmissive and provided between the optical housing and the optical block, wherein: the optical block includes: a photoelectric conversion device-facing surface on which light from the light emitting element is incident and from which the monitoring light is output toward the light-receiving element, a reflecting surface disposed on a surface opposite to the photoelectric conversion device-facing surface at a predetermined tilted angle relative to the photoelectric conversion device-facing surface, the reflecting surface being configured to receive light of the light emitting element incident on the photoelectric conversion device-facing surface, and reflect the light of the light emitting element thus received toward the optical transmission member, a tilted optical surface disposed on a surface opposite to the photoelectric conversion device-facing surface at a position toward which the light of the light emitting element reflected by the reflecting surface travels, the tilted optical surface being disposed at a predetermined tilted angle relative to the photoelectric conversion device-facing surface, and being configured to receive the light of the light emitting element reflected by the reflecting surface, a reflection-and-transmission layer disposed on the tilted optical surface, and configured to reflect the light of the light emitting element that reached the tilted optical surface toward the photoelectric conversion device-facing surface at a predetermined reflectance as the monitoring light, and to transmit the light of the light emitting element that reached the tilted optical surface to the optical transmission member side at a predetermined transmittance as coupling light to be coupled to the optical transmission member, and an optical block-fitting part disposed on a surface opposite to the photoelectric conversion device-facing surface at a position between the reflecting surface and the tilted optical surface, the optical block-fitting part being configured to fit the optical block and the optical housing together, the optical housing includes: a coupling light incidence surface disposed on an internal wall surface of a housing side wall part of the optical housing that is so disposed as to face the optical transmission member, the coupling light incidence surface being a surface on which the coupling light is incident, a coupling light emission surface disposed on an external wall surface of the housing side wall part, the coupling light emission surface being configured to receive the coupling light incident on the coupling light incidence surface, and to output the coupling light thus received toward the optical transmission member, and an optical housing-fitting part disposed at a position corresponding to the optical block-fitting part on a housing top wall part of the optical housing that shields the optical block from a side opposite to the photoelectric conversion device, the optical housing-fitting part being configured to fit with the optical block-fitting part, and the filler is provided between the reflection-and-transmission layer and the coupling light incidence surface. |
