Precision phase retardation devices and method of making same
US7050233B2 · kind B2 · utility
23Cited by
87References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2003 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Aug 1, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/3083
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A birefringent device of substantially uniform thickness less than about 10 microns, and being suitable for operating in a wavelength range about a central wavelength is disclosed. The device includes a base substrate, a layer of periodic index regions of alternating refractive indices applied to a first surface of the base substrate, and a cap substrate located substantially adjacent to the layer distal to the base substrate. The layer of periodic index regions has a periodicity of less than the central wavelength. The device being suitable to produce an arbitrary phase retardation between 0 and 2Π phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.