Electric lamp having an automatic light regulation
US9469241B2 · kind B2 · utility
3Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2013 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Nov 27, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A portable lamp, such as a headlamp is presented. The lamp contains The control unit contains a photo sensor and a regulation circuit controlling a switch-off phase of one or more beams during a period not visible to the holder of the lamp. The switch off phase being combined with at least one measure of diversity made by means of the photo sensor(s) on the reflective ambient environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.