Optical system with switchable diffuser
US11708962B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2022 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | Mar 23, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13756
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical system including a lighting component and a switchable diffuser in optical communication with the lighting component. The optical system may further include a low absorbing optical component. At least one outer surface of the switchable diffuser and/or the low absorbing optical component includes light redirecting structures. When the switchable diffuser is in a first state and the optical system produces a light output, the light redirecting structures are configured to increase the full width at half-maximum (FWHM) of the light output of the optical system in at least one direction by at least 5 degrees relative to that of an otherwise equivalent optical system that does not include the light redirecting structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.