High luminance projection displays and associated methods
US11637996B2 · kind B2 · utility
1Cited by
18References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2019 |
| Grant date | Apr 25, 2023 |
| Priority date | — |
| Expiry date | Oct 22, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2240/51
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Projection displays include a highlight projector and a main projector. Highlights projected by the highlight projector boost luminance in highlight areas of a base image projected by the main projector. Various highlight projectors are based on steerable beams, holographic projectors, and spatial light modulators. A Fourier transform component and a mask positioned on the Fourier plane thereof are used to attenuate or eliminate selected spatial frequencies, e.g., to increase peak luminance without raising the black level of the projected image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.