Camera lens group
US11092770B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2019 |
| Grant date | Aug 17, 2021 |
| Priority date | — |
| Expiry date | Dec 11, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/55
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A camera lens group is disclosed. The camera lens group includes, sequentially from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens having refractive powers. The second lens has a positive refractive power. An object-side surface of the second lens, an object-side surface of the third lens, and an object-side surface of the sixth lens are a convex surface. An image-side surface of the third lens, an image-side surface of the sixth lens, and an image-side surface of the seventh lens are a concave surface. A center thickness CT4 of the fourth lens on the optical axis and a center thickness CT5 of the fifth lens on the optical axis satisfy: CT4/CT5>1.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.