Field widening lens
US7929215B1 · kind B1 · utility
4Cited by
54References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2009 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Oct 7, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/283
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Field widening lens methods and systems are provided. The field widening lens includes a non-planar primary mirror and a secondary mirror. In addition, separate input and output ports are provided. The field widening lens further provides for an optical path difference for rays within the lens that is essentially zero for any ray within the field of view of an optical system including the field widening lens, regardless of the angle at which the ray entered the lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.