Imaging lens system and imaging apparatus incorporating the same
US11397309B2 · kind B2 · utility
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Key dates
| Filing date | Jan 7, 2019 |
| Grant date | Jul 26, 2022 |
| Priority date | — |
| Expiry date | Mar 15, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B15/22
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An imaging lens system includes a first group having positive power and a second group having positive power disposed in that order from an object side to an image. The first group includes a first sub-group and a second sub-group. The second group includes a third sub-group, a stop, and a fourth sub-group. Conditional expressions (1), (2), and (3) below are satisfied: 0.07<f2/f1<0.4 (1);0.45<f2/f2a<0.7 (2); and1.05<f/R1aN<1.55 (3)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.