Lens for illumination device
US9091412B2 · kind B2 · utility
1Cited by
1References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 20, 2013 |
| Grant date | Jul 28, 2015 |
| Priority date | — |
| Expiry date | Apr 4, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V5/048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lens for an illumination device includes a lens having a first surface and a second surface which is connected to the second surface along an annular curved line which is composed of two symmetric curved lines. The two curved lines are connected to each other at a first end point and a second end point. Each of the two curved lines has a middle point. The first surface is a multiple-focus surface and located on the outer side of the lens. The patterns and paths of the light beams can be controlled by the first surface of the lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.