Zoom lens and imaging apparatus
US10168514B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2017 |
| Grant date | Jan 1, 2019 |
| Priority date | — |
| Expiry date | Dec 15, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B15/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The zoom lens consists of, in order from the object side, a first lens group that has a positive refractive power and remains stationary during zooming, a plurality of movable lens groups that move during zooming, and a final lens group that has a positive refractive power and remains stationary during zooming. The first lens group consists of, in order from the object side, a first lens group front group that has a negative refractive power and remains stationary during focusing, a first lens group intermediate group that has a positive refractive power and moves during focusing, and a first lens group rear group that has a positive refractive power. The first lens group front group has, successively in order from a position closest to the object side, a negative meniscus lens that is concave toward the image side and a negative lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.