Imaging lens and imaging apparatus equipped with the imaging lens
US9753257B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 13, 2015 |
| Grant date | Sep 5, 2017 |
| Priority date | — |
| Expiry date | Apr 5, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B9/64
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An imaging lens consisting essentially of, in order from the object side, a first lens having a negative refractive power with the object side surface having a concave shape, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens having a negative refractive power with the image side surface having a concave shape with at least one inflection point, in which an aperture stop is provided between the first lens and the fifth lens, and the imaging lens satisfies predetermined conditional expressions. One of the second lens and the third lens has a positive refractive power and the other has a negative refractive power, and one of the fifth lens and the sixth lens has a positive refractive power and the other has a negative refractive power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.