Ocular vision system with optical guide that can be positioned in two positions
US9897813B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2014 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | May 28, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0178
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An ocular vision system with a display module, which includes a transparent optical guide, is adapted for propagating, by total internal reflections, a light beam transporting an image as far as an extraction section of the optical guide. The system may include: means for positioning the optical guide in a first position in which the extraction zone is placed along a first axis corresponding to a nominal axis of sight of the user's eye; means for positioning the optical guide in a second position in which the extraction zone is placed along a second axis offset with respect to the nominal axis of sight of the user's eye; and means for rotating the optical guide about an axis intended to pass substantially through the center of rotation of the user's eye, enabling the optical guide to pass from the first position to the second position and vice versa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.