Camera lens assembly
US11199699B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2018 |
| Grant date | Dec 14, 2021 |
| Priority date | — |
| Expiry date | Jul 2, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present disclosure discloses a camera lens assembly. The camera lens assembly has an effective focal length f and an entrance pupil diameter EPD, and includes a first lens, a second lens, a third lens, and a fourth lens in sequence from an object side to an image side along an optical axis. The first lens has a negative refractive power, and an image-side surface thereof is a concave surface. The second lens has a positive refractive power or a negative refractive power. The third lens has a positive refractive power. The fourth lens has a positive refractive power or a negative refractive power, and an image-side surface thereof is a convex surface. An effective radius DT11 of an object-side surface of the first lens and half of a diagonal length ImgH of an effective pixel area on an electronic photosensitive element of the camera lens assembly satisfy: 1.2<DT11/ImgH<2.6.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.