Freeform-prism eyepiece with illumination waveguide
US8985803B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 21, 2012 |
| Grant date | Mar 24, 2015 |
| Priority date | — |
| Expiry date | Jan 13, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133622
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An imaging panel includes a light source, a reflective image-forming array, and a freeform-prism eyepiece. The light source includes a light emitter and a waveguide having a grating. The waveguide is configured to confine the light from the light emitter and to release the light through the grating. The reflective image-forming array is configured to form a display image using light from the light source and to reflect the display image back through the waveguide. The freeform-prism eyepiece configured to receive the display image and to present the display image for viewing, together with an external image transmitted through the eyepiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.