Light sensitive lamp adapter
US4023035A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1974 |
| Grant date | May 10, 1977 |
| Priority date | — |
| Expiry date | Dec 12, 1994 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V23/0442
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light-sensitive lamp adaptor is small enough to fit in most indoor or outdoor lamps between the lamp socket and the light bulb. The adapter contains a solid state electronic circuit including a photocell which is in good thermal contact with the thermally conductive base of the adapter so that these electrical components are not heated excessively. A small window in the side of the adapter is movable about the axis of the adapter so that the photocell will respond only to light incident on the window from a given direction and the size of the window can be adjusted so that the unit will respond only to light of a given intensity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.