Lighting apparatus
US11181251B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2020 |
| Grant date | Nov 23, 2021 |
| Priority date | — |
| Expiry date | Oct 19, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting apparatus includes a light source plate, a light passing cover and a surface rim. The light source plate is mounted with LED modules and a driver circuit. The light passing cover has a circular curved surface. The circular curved surface has a first diameter. A curvature of the circular curved surface is a first radius of a corresponding osculating circle. A ratio between the first diameter to the first radius multiplied with two is between 0.25 to 0.75. The surface rim has a central concave platform for disposing the light source plate. The driver circuit converts an external power source to a driving current supplied to the LED modules to emit a light passing through the light passing cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.