Optical communication module and optical element for optical communication module
US7397616B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2006 |
| Grant date | Jul 8, 2008 |
| Priority date | — |
| Expiry date | May 3, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4206
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical communication module includes a first light-receiving element with a receiving surface in which a light flux with a wavelength λ1 emitted from an end surface of an optical fiber enters; a light-emitting element for emitting a light flux with a wavelength λ2; and a first optical element arranged between the first light-receiving element and the light-emitting element, and the end surface of the optical fiber. The first optical element includes a first optical surface with a positive refractive power and a second optical surface having a diffractive structure. One of the first optical surface and the second optical surface is divided into at least a first optical functional surface and a second optical functional surface through a step difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.