Optical guide and ocular vision optical system
US8433172B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2008 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Oct 16, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to optical guides and more precisely to guides for conveying an image without deforming the same. These guides can particularly be used in the production of ocular-vision optical systems more currently named informative spectacles. The optical guide includes an extraction section made of reflective microstructures at the surface of the guide. The microstructures define prisms having a calculated angle in order to send back the light beam at a given angle relative to the opposite surface enabling the exit thereof from the guide. Advantageously, the cut and the arrangement of said microstructures make them invisible to the eye while generating a large and comfortable image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.