Multilevel mechanical grating device
US6335831B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1998 |
| Grant date | Jan 1, 2002 |
| Priority date | — |
| Expiry date | Dec 18, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/0808
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A mechanical grating device for improving the diffraction efficiency. The mechanical grating device is built on a base having a surface. Above the base a spacer layer, having an upper surface, is provided, and a longitudinal channel is formed in said spacer layer, said channel having a first and second opposing side wall and a bottom. A plurality of spaced apart deformable ribbon elements are disposed parallel to each other. The deformable elements are organized in groups of N elements wherein N is greater than 2. When the device is actuated each of said groups forms a pattern of discrete levels wherein the pattern has n levels wherein n is greater than 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.