Diffractive focusing using multiple selectively light opaque elements
US6888613B2 · kind B2 · utility
39Cited by
12References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2002 |
| Grant date | May 3, 2005 |
| Priority date | — |
| Expiry date | Jun 22, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/29
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A diffractive focusing device includes a light transmissive substrate and a plurality of selectively light opaque elements formed in the light transmissive substrate. The selectively light opaque elements are capable of being electronically activated. Particular elements of the plurality of selectively light opaque elements are selectively rendered substantially light opaque or substantially light-transmissive in order to create light transmissive channels in the light transmissive substrate with desired diffractive characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.