Camera lens assembly comprising four lenses of +−++, ++−+ or +−−+ regractive powers
US12306381B2 · kind B2 · utility
0Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 24, 2021 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Dec 30, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present disclosure discloses a camera lens assembly, the camera lens assembly having a total effective focal length f and an entrance pupil diameter EPD, and along an optical axis from an object side to an image side sequentially including a first lens, a second lens, a third lens and a fourth lens, wherein the first lens and the fourth lens have positive refractive powers, an image-side surface of the first lens is a concave surface, and an object-side surface of the fourth lens is a convex surface. In addition, the total effective focal length f and the entrance pupil diameter EPD satisfy: f/EPD≤2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.