Lighting device and light control component thereof
US8749137B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2013 |
| Grant date | Jun 10, 2014 |
| Priority date | — |
| Expiry date | Jan 11, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting device includes a base, a light emitting component operable to generate light, and a light control component cooperating with the base to enclose the light emitting component. The light control component includes a light transmissive body that has a datum point, a main axis passing through the datum point, a light incident surface that is axis symmetrical relative to the main axis, and a light exit surface that is axis symmetrical relative to the main axis. The light incident surface includes a plurality of annular incident surface portions that form a Fresnel lens configuration and that are concentric with respect to the main axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.