LED based lamp and method for manufacturing the same
US8884501B2 · kind B2 · utility
16Cited by
21References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2011 |
| Grant date | Nov 11, 2014 |
| Priority date | — |
| Expiry date | Jan 28, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light emitting diode (LED) based lamp is provided that may include a housing, a LED module having at least one LED to emit light, and a lens to receive the light from the LED and to guide the light to a specific area. An outer circumference of the lens may have a different surface roughness than an inner surface of the lens or may have a different light transmissivity than the inner surface of the lens. The outer circumference of the lens may minimize light from being transmitted to a region outside the specific area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.