Broadband polarization splitting based on volumetric meta-optics
US12320988B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Sep 14, 2021 |
| Grant date | Jun 3, 2025 |
| Priority date | — |
| Expiry date | Feb 2, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/8053
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Methods and devices to split electromagnetic waves across broad bandwidths in correspondence with predefined polarization state vectors are disclosed. The described methods can be used cameras or image sensors measuring directly the polarization states of an incident electromagnetic waves. The devices include three-dimensional (3D) scattering structures made of dielectric pillars and using existing CMOS processes and direct write lithography techniques. Performance metrics based on the intensity and contrast of the split electromagnetic waves are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.