Zoom lens and image pickup apparatus using the same
US9958656B2 · kind B2 · utility
16Cited by
7References
71Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2016 |
| Grant date | May 1, 2018 |
| Priority date | — |
| Expiry date | Nov 18, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A zoom lens includes a front unit having a negative refractive power and a rear unit having a positive refractive power, which includes an aperture stop, and the front unit includes a first lens having a negative refractive power, and the first lens has a meniscus shape of which a convex surface is directed toward the object side, and the rear unit includes a first lens unit A and a second lens unit B, and at the time of zooming from a wide angle end to a telephoto end, a distance between the front unit and the rear unit changes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.