Imaging lens
US12259526B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2021 |
| Grant date | Mar 25, 2025 |
| Priority date | — |
| Expiry date | Jun 23, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B9/60
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is provided an imaging lens having a low profile and a low F-number and allowing satisfactory correction of aberrations. An imaging lens comprises in order from an object side, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, a third lens L3, a fourth lens L4 with positive refractive power, and a fifth lens L5 with negative refractive power, wherein an image-side surface of said fourth lens L4 is convex in a paraxial region, an object-side surface of said fifth lens L5 is an aspheric surface having at least one inflection point, and the following conditional expressions are satisfied: f/Dep<2.0 (1)1.2<T3/T2<1.8 (2)15<vd3<35 (3)−1.0<R5f/R5r<−0.3 (4)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.