Zoom lens and image pickup apparatus having the same
US11644654B2 · kind B2 · utility
0Cited by
2References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 10, 2022 |
| Grant date | May 9, 2023 |
| Priority date | — |
| Expiry date | May 10, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/698
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A zoom lens consisting of, in order from an object side to an image side, a first lens unit having a negative refractive power, and a rear lens unit having one or more lens units and having a positive refractive power as a whole. Intervals between adjacent lens units change during zooming. The first lens unit has at least three meniscus lenses each having a negative refractive power and a convex shape toward the object side. At least one of the at least three meniscus lenses includes an aspherical surface having a positive aspherical amount. A predetermined condition is satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.