Mobile device light meter attachment
US9291880B2 · kind B2 · utility
1Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2014 |
| Grant date | Mar 22, 2016 |
| Priority date | — |
| Expiry date | Feb 25, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/55
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Incident light filter or cap assembly adapted to be attached to a mobile device equipped with a camera and software to measure light levels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.