Zoom lens and image pickup apparatus including the same
US9964743B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 23, 2015 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Apr 15, 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 positive first lens unit; a negative second lens unit; a positive third lens unit; and a rear lens group including at least one lens unit, in which the first lens unit is not configured to move for zooming, and the second lens unit, the third lens unit, and at least one lens unit included in the rear lens group are configured to move during zooming so that intervals between adjacent lens units are changed during zooming. A lateral magnification of the second lens unit at a wide angle end, a lateral magnification of the second lens unit at a telephoto end, a movement amount of the third lens unit during zooming from the wide angle end to the telephoto end, and a total length of the zoom lens are appropriately set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.