Oxidized light guiding component and manufacturing technique
US6609835B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2002 |
| Grant date | Aug 26, 2003 |
| Priority date | — |
| Expiry date | Mar 14, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3839
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of forming a guide for light in a high refractive index material involves forming a guiding structure into a surface of the material, treating the material with a reactive gas to cause the wall to become a cladding material having a relatively low refractive index, and after treating, filling the cavity with an optically transparent material having a refractive index sufficiently above that of the cladding. A light guiding device is also described. The light guiding device has a slab having a high refractive index, a guide located within the slab. The guide has a wall surface covered with a material, derived from the slab, having a first refractive index lower than the high refractive index, and a filler material having a second refractive index sufficiently higher than the first refractive index such that light entering the guide will be directed towards the second end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.