Process for fabricating multi-discrete-phase fresnel lenses
US5278028A · kind A · utility
27Cited by
11References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1991 |
| Grant date | Jan 11, 1994 |
| Priority date | — |
| Expiry date | Nov 25, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/001
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process is provided for fabricating multi-discrete-phase binary Fresnel acoustic and optical lenses through the use of standard microelectronic fabrication techniques, thereby enabling such lenses to be produced repeatedly and economically to exacting design specifications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.