Light homogenization
US10317679B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2017 |
| Grant date | Jun 11, 2019 |
| Priority date | — |
| Expiry date | Jul 22, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2222/45
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical reflective device for homogenizing light including a waveguide having a first and second waveguide surface and a partially reflective element is disclosed. The partially reflective element may be located between the first waveguide surface and the second waveguide surface. The partially reflective element may have a reflective axis parallel to a waveguide surface normal. The partially reflective element may be configured to reflect light incident on the partially reflective element at a first reflectivity for a first set of incidence angles and reflect light incident on the partially reflective element at a second reflectivity for a second set of incident angles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.