Sensing with liquid crystal polarization holograms and metasurface
US12231749B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Jul 14, 2022 |
| Grant date | Feb 18, 2025 |
| Priority date | — |
| Expiry date | Feb 17, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Imaging systems, cameras, and image sensors of this disclosure include imaging pixels that include subpixels. Diffractive optical elements such as a metasurface lens layers or a liquid crystal polarization hologram (LCPH) are configured to focus image light to the subpixels of the imaging pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.