Reflector lamp having improved lens
US5199787A · kind A · utility
11Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1992 |
| Grant date | Apr 6, 1993 |
| Priority date | — |
| Expiry date | Jan 8, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V7/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A reflector lamp having a lens with an annular surface portion which surrounds a central stippled portion. The annular portion includes a plurality of beam forming elements in the form of oblique flutes which extend at an acute angle to respective radius through the optical axis. According to a preferred embodiment, the flutes are also curved in the plane of the lens surface according to an arc of circle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.