Viewing direction independent single-layer, pixelated light dimming filter
US10871653B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2019 |
| Grant date | Dec 22, 2020 |
| Priority date | — |
| Expiry date | Apr 24, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/144
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A system included in a wearable viewing device (10) prevents reduction in legibility of a near-eye image display for observation in combination with an observer's visual exterior view. The system includes a near-eye image source (14) from which emanates near-eye image-carrying light and which is positioned out of the observer's direct visual exterior view. A dimming matrix display (12) including multiple pixels is positioned so that the observer (22) can see though them a scene (30, 32) in an exterior view. A partly transparent optical element (20) is positioned so that the observer can see the scene in the exterior view and reflect the near-eye image-carrying light to provide an image for observation by the observer. A dimming controller (34) controls amounts of scene-carrying light propagating through the multiple pixels from the locations in the scene and thereby prevents wash-out of the near-eye image when outside illumination is very bright.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.