Polarization-based processing of unpolarized image light
US11686942B2 · kind B2 · utility
1Cited by
4References
15Claims
0Family size
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Key dates
| Filing date | Dec 30, 2019 |
| Grant date | Jun 27, 2023 |
| Priority date | — |
| Expiry date | Jun 25, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0185
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display system includes a source of unpolarized image light, and a stack of polarization-selective optical elements operable to switchably convert the unpolarized image light into two orthogonally polarized light beams, each of which being switchable in at least one beam characteristic. An output polarizer selects one of the two orthogonally polarized light beams for providing to a user. A depolarizer may be disposed between an electronic display emitting polarized light and the stack. The depolarizer may be in the form of an LC bilayer with randomized in-plane optic axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.