Embedded relay lens for head-up displays or the like
US7656585B1 · kind B1 · utility
226Cited by
2References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2008 |
| Grant date | Feb 2, 2010 |
| Priority date | — |
| Expiry date | Aug 22, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/22
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Briefly, in accordance with one or more embodiments, an optical relay comprises a partially-reflective-coated Fresnel lens or similar low-profile lens such as a diffractive lens or a holographic lens having a first index of refraction and a filler medium having a second index of refraction and being disposed adjacent to the Fresnel lens. The optical relay enables the optical power of the Fresnel or similar low-profile lens embedded within the two layers to influence a beam that is reflected from the optical relay while allowing transmitted light to experience little or no influence from the embedded lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.