Display devices with reflectors
US10782453B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2016 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Jan 20, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/383
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display device has a display, operable to generate a real image, and an optical system. In the optical system are at least two free-form reflective surfaces, S I and S2. At least one of the reflective surfaces is convex in one direction at substantially all points of its optically active area. Light rays from the display are reflected on SI before they are reflected on S2. The reflective surfaces SI and S2 are arranged to generate a virtual image from the real image on the display, by projecting light from the display to an eye position. The field of view occupied by the virtual image as seen from the eye position is greater than 50 degrees in at least one direction, preferably the direction linking the two eyes of an intended user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.