Varifocal optical assembly providing astigmatism compensation
US11221479B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2019 |
| Grant date | Jan 11, 2022 |
| Priority date | — |
| Expiry date | Jul 14, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0136
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An astigmatism compensation optical assembly includes a first astigmatism compensation optical module including a first plurality of optical elements including Pancharatnam-Berry phase (PBP) lenses, PBP gratings, polarization sensitive hologram (PSH) lenses, PSH gratings, metamaterials, or combinations thereof. The first plurality of optical elements are configured to compensate for astigmatism in a first axis and include a property associated with Zernike polynomial Z2−2. The astigmatism compensation optical assembly also includes a second astigmatism compensation optical module including a second plurality of optical elements including PBP lenses, PBP gratings, PSH lenses, PSH gratings, metamaterials, or combinations thereof. The second plurality of optical elements are configured to compensate for astigmatism in a second axis and include a property associated with Zernike polynomial Z22. Each of the first and the second astigmatism compensation module is configurable between a plurality of optical powers to provide a plurality of cylindrical and axial correction values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.