Zoom lens and image pickup apparatus including the same
US9599800B2 · kind B2 · utility
0Cited by
1References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 12, 2016 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Jan 12, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is a zoom lens, including, in order from an object side to an image side: a first lens unit having a positive refractive power; a second lens unit having a negative refractive power; a third lens unit having a positive refractive power; and a rear lens group including at least one lens unit, in which an interval between each pair of adjacent lens units is changed during zooming, and materials of lenses included in a lens unit arranged closest to the image side are appropriately set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.