Lamp assembly
US4542448A · kind A · utility
9Cited by
1References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1984 |
| Grant date | Sep 17, 1985 |
| Priority date | — |
| Expiry date | Jan 25, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S43/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Lamp assembly consisting of a housing with an opening containing a bulb, a frenel lens, a condenser lens and an outer lens installed in the housing nearest to the opening which allow the beams from the condenser lens to pass through plurality of portions pervious to light corresponding to the condenser lens respectively of which surfaces have the different tilt angles with each other, through which the refracted beams are radiated in such a manner that their refracted directions have in turn a gradual tendency of tilting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.