Lamp with light emitting diodes
US6731053B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 12, 2002 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Nov 12, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lamp includes a base, light emitting diodes and a transparent covering unit. The base has a convexly curved surface. The transparent covering unit has a convexly curved surface on a first side, and several outwardly facing flat sections on an opposite second side, which is faced with the convexly curved surface of the base. The light emitting diodes are arranged on the convexly curved surface of the base to be each perpendicular to a corresponding one of the flat sections; thus, light emitted from the light emitting diodes can be refracted to focus when passing through the transparent covering unit, providing increased illumination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.