Lighting device comprising separator sheet
US10955101B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 2019 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Dec 18, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The disclosure relates to a lighting device. The object to provide a lighting device comprising a light guide, wherein the amount of guided light is further optimized, is solved in that the lighting device comprises: a light-emitting element with a light-emitting face; the light guide having a light entry face, the light guide being configured to guide light emitted by the light-emitting element by means of total internal reflection; and a separator sheet comprising a first face and a second face, wherein the first face is arranged in direct contact to the light entry face, wherein the second face is arranged opposite the light-emitting face, wherein the separator sheet is arranged such that a minimum distance between the light-emitting face and the light entry face is 300 μm or less, and wherein the separator sheet is arranged such that a gap is provided between the light-emitting element and the separator sheet at least in sections. The invention further relates to a method for production of such a lighting device and to an automotive head light comprising an inventive lighting device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.