Optical waveguide, optical waveguide module, and electronic apparatus
US8457455B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2008 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | Nov 7, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/43
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light guide includes a core and a clad made of a material having an index of refraction different from an index of refraction of the core and covering the core, in which at least one of a light incident surface or a light exit surface of the core is arranged while shifted in parallel without changing respective inclined angles so that the inclined surface is divided into a plurality of inclined surfaces parallel in a longitudinal direction (X direction) of the rectangular shape in the orthogonal projection and the plurality of inclined surfaces closer to the light emitting portion are positioned in a direction (Z direction) of moving away from the end face to be in a shape extending in the direction (Z direction) of moving away from the end face in a stepwise manner as a whole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.