Zoom lens, optical apparatus and method for manufacturing the zoom lens
US11002948B2 · kind B2 · utility
1Cited by
1References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 9, 2016 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Sep 5, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/646
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A zoom lens comprises, in order from an object, a first lens group (G1) having negative refractive power, a second lens group (G2) having positive refractive power, a third lens group (G3) having negative refractive power, and a fourth lens group (G4) having positive refractive power to satisfy the following conditional expression: 1.60<(−f1)/fw<2.50
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.