Protecting an optical surface
US9022584B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2011 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Mar 5, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
According to one embodiment, a method includes receiving a light beam at an anti-reflective layer of optically transmissive material. The anti-reflective layer has an outer surface disposed within a recess of a protective layer of optically transmissive material, such that the outer surface is protected by the recess and the protective layer from being contacted. The outer surface is further disposed along an optical path of an optical device disposed inwardly from the outer surface. The anti-reflective layer has an average cross-sectional thickness that is less than an average cross-sectional thickness of the protective layer. The method further includes modulating the light beam using the anti-reflective layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.