Optical stack and optical system
US9995939B2 · kind B2 · utility
7Cited by
51References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 6, 2017 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Jun 6, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0138
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Integral optical stacks and optical systems including the integral optical stack are described. The integral optical stack may include first and second lenses, a partial reflector, a reflective polarizer curved about two orthogonal axes, and a quarter wave retarder. The reflective polarizer is curved about two orthogonal axes and includes at least one layer that is substantially optically biaxial at at least one first location on the at least one layer away from an optical axis of the optical stack and substantially optically uniaxial at at least one second location away from the optical axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.