Zoom lens and photographing apparatus
US8643954B2 · kind B2 · utility
1Cited by
2References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 25, 2013 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | Feb 25, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/646
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A zoom lens and a photographing apparatus including the same. The zoom lens includes a first lens group having a positive refractive power, a second lens group having a negative refractive power, and an additional lens grouping having a positive refractive power, which are sequentially arranged from an object side, wherein the additional lens grouping comprises a third lens group having a positive refractive power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.