Zoom lens system
US7817351B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Dec 30, 2008 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | May 28, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B15/143507
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A zoom lens system includes, in order from the object side, a negative first lens group, a positive second lens group; and a positive third lens group. The first lens group includes, in order from the object side to the image side, a negative first lens and a positive second lens. The second lens group includes, in order from the object side to the image side, a positive third lens, a negative fourth lens, and a negative fifth lens. The zoom lens system satisfies certain conditions related to the configuration of the lens and lens groups of the zoom lens system in order to provide a compact zoom lens having excellent correction of aberrations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.