Light source and multiview backlight using the same
US11016238B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2019 |
| Grant date | May 25, 2021 |
| Priority date | — |
| Expiry date | Dec 3, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/882
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light source includes an optical emitter configured to emit light toward an output aperture of the light source. The light source further includes a partially reflective layer at the output aperture. The partially reflective layer is configured to receive the emitted light from the optical emitter and to reflect a portion of the received light as reflected light. The light source additionally includes a scattering medium located between the partially reflective layer and the optical emitter. The scattering medium is configured to scatter the reflected light as scattered light having a different direction from the reflected light. A portion of the scattered light is redirected toward the partially reflective layer as recycled light to be emitted from the light source. A multiview backlight that employs the light source is also provided, along with a method for operating the light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.