Multiple reflective lenses and lens systems
US7898749B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2006 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | Jan 17, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B17/004
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A variety of lenses, lens assemblies, imaging devices, applications for such lenses, assemblies and devices, and related methods of operation and manufacturing are disclosed. At least some embodiments of the invention relate to a lens that includes first and second inward-facing surfaces that are each at least partly reflective. The lens further includes a first aperture that is positioned around at least a portion of an outer periphery of one of the first and second inward-facing surfaces, and a second aperture existing proximate a central region of the lens. The light proceeding within the lens between the first and second inward-facing surfaces is reflected at least twice on at least one of the first and second inward-facing surfaces as it travels between the first aperture and the second aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.