Zoom lens
US9354431B2 · kind B2 · utility
1Cited by
0References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 30, 2014 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | Jun 30, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B15/142
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A zoom lens includes a negative first lens group, an aperture, and a positive second lens group. The first lens group includes a negative first lens, a negative second lens, and a positive third lens. The second lens group includes a positive fourth lens, a negative fifth lens, a negative sixth lens, and a positive seventh lens, wherein the fifth lens is formed by adhering a positive lens and a negative lens, and the sixth lens is a meniscus lens. The zoom lens can be switched toward a telephoto mode from a wide mode by moving the second lens group from the image side toward the object side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.