Stereo image projection with high intra-frame contrast
US12047553B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2022 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | Feb 17, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/337
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projection system includes a projection lens to project image light along an image light path towards a port window and to redirect a portion of the image light away from the image light path as result of being scattered or reflected away from the image light path. The projection system includes a port window for transmitting projected image light from the projection lens. The port window has a surface for redirecting a portion of the projected image light as result of being scattered or reflected away from the image light path. The projection system includes an enclosure positioned between the port window and the projection lens to surround the image light path between the port window and the projection lens. The enclosure absorbs the portion of the image light redirected by the projection lens and absorbs the portion of the projected image light redirected by the surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.