Cartridge type attachment lens for a digital camera
US7736074B2 · kind B2 · utility
0Cited by
8References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 30, 2008 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Feb 10, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/55
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A cartridge type attachment lens is arranged in front of a digital camera for receiving card lenses. A cuboid shaped shell is removably attached to a camera lens. A battery and a lighting unit as a light source for the close-up photography are in the shell. A plurality of parallel slots are each disposed on one lateral side of the shell, and each slot extends inwards to form a sliding groove in the shell for accommodating the card lens. Multiple card lenses can be inserted the shell to form arbitrary permutation and combination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.