Total internal reflection micro lens array
US7548376B2 · kind B2 · utility
8Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2006 |
| Grant date | Jun 16, 2009 |
| Priority date | — |
| Expiry date | Sep 18, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B17/0856
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to a total internal reflection micro lens array for a wide-angle lighting system. The micro lens array includes a plurality of Fresnel lens structures formed on a same optical incidence surface. Each of the Fresnel lens structure includes a plurality of grooves, each having a reflecting surface and a refractive surface. Incoming radiation incident through the incidence surface of the lens structure is internally totally reflected by the reflecting surface, refracted by the refractive surface and exits the lens structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.