Wearable display for near-to-eye viewing
US10816795B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2017 |
| Grant date | Oct 27, 2020 |
| Priority date | — |
| Expiry date | Feb 28, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/344
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical apparatus has a laser source to direct modulated light toward a scan mirror and objective lens that define a focal surface. Pupil relay optics relay a first pupil at the scan mirror to a second pupil at an eye lens, the pupil relay optics defining an optical axis extending between pupils and having a curved mirror that transmits substantially half of the modulated beam and that has a first center of curvature at the first pupil and a first polarizer in the path of light from the scan mirror to reflect incident light of a first polarization and first angle toward the curved mirror surface and transmit incident light of an orthogonal polarization and second angle, wherein the pupil relay optics direct the modulated light beam twice to the first polarizer, and wherein the modulated light incident the second time is collimated and directed toward the second pupil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.