Zoned optical waveplate
US10436947B2 · kind B2 · utility
1Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 2018 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | May 7, 2038 |
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.