Lens and bulb-type light emitting device lamp employing the lens
US8979325B2 · kind B2 · utility
1Cited by
0References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 19, 2012 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | May 1, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lens and a bulb-type light emitting device lamp employing the lens are disclosed. The lens for changing light distribution of incident illumination light and emitting the illumination light includes a light incident surface that is curved, a top surface that is planar and via which at least a portion of light incident via the light incident surface is emitted, and a side surface that is uneven and via which at least a portion of light incident via the light incident surface is emitted. The bulb-type light emitting device lamp includes the lens and a light emitting device package including one or more light emitting devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.