Lamp
US4209825A · kind A · utility
19Cited by
12References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 27, 1977 |
| Grant date | Jun 24, 1980 |
| Priority date | — |
| Expiry date | Dec 27, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S41/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lamp having a treated lense for reducing peripheral glare thereby making the lamp useful as a driving light, fog light or spotlight. The treated lense is provided with opaque pigment around the periphery of the lense and the center portion thereof to form elliptical shaped aperture for more acutely defining the desired beam pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.