Photographic lens and photographic apparatus including the same
US9927597B2 · kind B2 · utility
6Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2016 |
| Grant date | Mar 27, 2018 |
| Priority date | — |
| Expiry date | Jan 28, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B9/62
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photographic lens includes, in a sequence from an object to an image plane, a first lens having positive or negative refractive power; a second lens having positive or negative refractive power; a third lens having positive refractive power; a fourth lens having negative refractive power; a fifth lens having positive refractive power; and a sixth lens having negative refractive power. The photographic lens satisfies the following condition:90°<FOV<160°0.5<D1/D6<1.0where FOV is a field of view of the photographic lens, D1 is an effective aperture of the first lens, and D2 is an effective aperture of the sixth lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.