Optical stack and optical system
US9581744B1 · kind B1 · utility
30Cited by
40References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2015 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Sep 25, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0138
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Integral optical stacks and optical systems including an image surface, a stop surface and an integral optical stack disposed between the image surface and the stop surface are described. The integral optical stack includes an optical lens, a partial reflector, a multilayer reflective polarizer and a quarter wave retarder. At least one chief light ray transmitted through the stop surface and the image surface passes through the stop surface at an incident angle of at least 40 degrees.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.