Camera lens group
US12055697B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2021 |
| Grant date | Aug 6, 2024 |
| Priority date | — |
| Expiry date | Jan 16, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The disclosure provides a camera lens group, which sequentially includes, from an object side to an image side along an optical axis: a first lens group with a positive refractive power, sequentially including, along the optical axis, a first lens, a second lens and a third lens with refractive power respectively; and a second lens group with a negative refractive power, sequentially including, the optical axis, a fourth lens, a fifth lens, a sixth lens and a seventh lens with refractive power respectively, wherein a total effective focal length f of the camera lens group and an entrance pupil diameter (EPD) of the camera lens group meet f/EPD<1.4; and an effective focal length f1 of the first lens and a spacing distance T34 of the third lens and the fourth lens on the optical axis meet 3.0<f1/T34<5.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.