Display device with a switchable window and see-through pancake lens assembly
US10600352B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2018 |
| Grant date | Mar 24, 2020 |
| Priority date | — |
| Expiry date | Dec 4, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/144
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display device is configured to be operable in a normal mode that blocks ambient light or a see-through mode that allows ambient light to be visible to a user. The display device includes an emission surface configured to output image light, a switchable window configurable to block ambient light in the normal mode or to transmit ambient light in the see-through mode, and an optical assembly. The optical assembly includes a first region configured to receive image light from the emission surface and to direct the image light toward the eyes of a user. The optical assembly also includes a second region configured to receive ambient light from the switchable window and to allow at least a portion of the ambient light to pass through. A method of setting the display device in normal mode or see-through mode is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.