Photographic lens optical system
US9372325B2 · kind B2 · utility
1Cited by
1References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2014 |
| Grant date | Jun 21, 2016 |
| Priority date | — |
| Expiry date | Dec 15, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photographic lens optical system. The photographic lens optical system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens that are sequentially arranged in a direction from an object toward an image sensor. The first lens has a negative (−) power, and the emission surface thereof may be convex toward the object. The second lens may have a positive (+) power, the third and fourth lenses have positive (+) powers, and the fifth lens has a negative (−) power. Furthermore, the sixth lens is an aspherical lens having a positive (+) power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.