Zoned optical waveplate
US11619770B2 · kind B2 · utility
0Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2019 |
| Grant date | Apr 4, 2023 |
| Priority date | — |
| Expiry date | Jun 26, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/0005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A zoned waveplate has a series of transversely stacked birefringent zones alternating with non-birefringent zones. The birefringent and non-birefringent zones are integrally formed upon an AR-coated face of a single substrate by patterning the AR coated face of the substrate with zero-order sub-wavelength form-birefringent gratings configured to have a target retardance. The layer structure of the AR coating is designed to provide the target birefringence in the patterned zones and the reflection suppression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.