Optical system
US10330930B2 · kind B2 · utility
5Cited by
57References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2018 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Mar 8, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0138
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Optical systems including a partial reflector, a reflective polarizer, and a quarter wave retarder disposed between the partial reflector and the reflective polarizer are described. The reflective polarizer is curved about two orthogonal axes and has at least one location having a radial distance r1 from an optical axis passing through an apex of the reflective polarizer and a displacement s1 from a plane perpendicular to the optical axis at an apex of the reflective polarizer, where s1/r1 is at least 0.1. The optical system is adapted to provide an adjustable dioptric correction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.