Edgelit light fixture with optically transmissive component for improved appearance of lightguide input region
US12372707B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2022 |
| Grant date | Jul 29, 2025 |
| Priority date | — |
| Expiry date | Oct 7, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0088
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A optically transmissive component is configured within a light fixture to provide benefits in brightness uniformity and visual appearance with the use of a light scattering extension portion that provides light scattering of light emitted from near an input edge of a light guide or other edgelit optical element. The sequential propagation of light through both the extension portion and main portion of the optically transmissive component significantly reduces the higher brightness and uneven “hotspotting” type visual defects typically produced near the input edge of an edgelit optical system. With appearance constraints removed or reduced, edgelit light fixtures with higher output, higher efficacy, and/or simplified edgelit optical components are enabled. Embodiments include the use of the extension portion of the optically transmissive component extension to mechanically position and retain an edgelit optical element within a light fixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.