Zoom lens, image pickup apparatus including zoom lens, and image pickup system
US11009677B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 15, 2019 |
| Grant date | May 18, 2021 |
| Priority date | — |
| Expiry date | May 1, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/55
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A zoom lens including, in order from an object side: a first positive lens unit; a second negative lens unit; a third positive lens unit; a fourth negative lens unit; and a fifth positive lens unit, wherein during zooming from a wide angle end, intervals between the adjacent lens units are changed in such a way that the second lens unit is configured to move from the object side to the image side and the third lens unit and the fourth lens unit are configured to move, and a focal length of the third lens unit, a focal length of the fourth lens unit, a movement amount of the second lens unit during zooming from the wide angle end to the telephoto end, and a movement amount of the third lens unit during zooming from the wide angle end to the telephoto end are appropriately set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.