Optical coupler, design method therefor, and vehicle light therewith
US12129985B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 2022 |
| Grant date | Oct 29, 2024 |
| Priority date | — |
| Expiry date | Sep 20, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0088
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An optical coupler is described herein. The optical coupler includes at least one optical coupler unit. The at least one optical coupler includes an optical coupler entrance face and an optical coupler exit face. The optical coupler entrance face is configured to face, and receive light emitted by, at least one LED during operation. The optical coupler exit face is shaped as a Fresnel lens with a focal point at or behind a light emitting area of the at least one LED and is configured to face a lightguide entrance face of a slab lightguide. The optical coupler exit face has dimensions that match at least a part of the lightguide entrance face. The optical coupler entrance and exit faces are configured to refract light emitted by the at least one LED during operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.