Lighting device comprising a light-transmissive enclosure
US12013108B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2021 |
| Grant date | Jun 18, 2024 |
| Priority date | — |
| Expiry date | Sep 16, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting device (1) is provided. The lighting device (1) comprises a light-transmissive enclosure (10) and alight source (30). The light-transmissive enclosure (10) has an outer surface (11) and an inner surface (12) opposite to the outer surface (11). The inner surface (12) at least in part forming a cavity (20). The light-transmissive enclosure (10) has an opening (15) lying in a transverse plane (P1). The light source (30) is arranged on the transverse plane (P1), or on a side of the transverse plane (P1) opposite of the light-transmissive enclosure (10), and configured to emit light into the cavity (20). The light-transmissive enclosure (10) is arranged around a longitudinal axis (L), the longitudinal axis (L) lying in a longitudinal plane that is perpendicular to the transverse plane (P1). The light-transmissive enclosure (10) has a first part (101) and a second part (102) separated from each other by the longitudinal plane (P2). The first part (101) is shaped as a first parabolic segment or a first elliptical segment having a first focal point (13) that is located on the transverse plane (P1). The second part (102) is shaped as a second parabolic segment or a second ellipti…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.